Consulta: subjectFacets:"Sea level"
Registros recuperados: 59
Data/hora: 11/06/2024 05:23:44

Океанографические условия и экологические проблемы Керченского пролива
Provedor de dados: 13
Autores: Еремеев, В. Н.; Иванов, В. А.; Ильин, Ю. П.
Изложены основные особенности океанографического режима Керченского пролива, в том числе ветрового волнения, колебаний уровня моря, системы течений и водообмена, ледового режима, гидрохимических условий, транспорта наносов. Выделены существующие и потенциальные экологические проблемы, связанные с зарегулированием водообмена через пролив. Это дает основу для предварительного качественного анализа возможных последствий антропогенного вмешательства в сложную морскую экосистему, в частности – строительства дамбы в Тузлинской промоине.
Tipo: Journal Contribution
Palavras-chave: Экосистема; Керченский пролив; Ветровое волнение; Уровень моря; Течения; Водообмен; Ледовый режим; Транспорт наносов; Эвтрофикация; Ecosystem; The Kerch Strait; Wind disturbance; Sea level; Currents; Water exchange; Ice; Alluviums transport; Eutrophication Eutrophication Ice Water exchange Sea level Eutrophication Ice Sea level http://aims.fao.org/aos/agrovoc/c_2734 http://aims.fao.org/aos/agrovoc/c_3782 http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/150

Impact of relative sea level and rapid climate changes on the architecture and lithofacies of the Holocene Rhone subaqueous delta (Western Mediterranean Sea)
Provedor de dados: 5
Autores: Fanget, Anne-sophie; Berne, Serge; Jouet, Gwenael; Bassetti, Maria-angela; Dennielou, Bernard; Maillet, Gregoire M.; Tondut, Mathieu.
The modern Rhone delta in the Gulf of Lions (NW Mediterranean) is a typical wave-dominated delta that developed after the stabilization of relative sea level following the last deglacial sea-level rise. Similar to most other deltas worldwide, it displays several stacked parasequences and lobes that reflect the complex interaction between accommodation, sediment supply and autogenic processes on the architecture of a wave-dominated delta. The interpretation of a large set of newly acquired very high-resolution seismic and sedimentological data, well constrained by 14C dates, provides a refined three-dimensional image of the detailed architecture (seismic bounding surfaces, sedimentary facies) of the Rhone subaqueous delta, and allows us to propose a...
Tipo: Text
Palavras-chave: Delta; Holocene; Maximum Flooding Surface; Sea level; Tempestites; Western Mediterranean.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00179/29017/27445.pdf

Post-glacial persistence of turbiditic activity within the Rhone deep-sea turbidite system (Gulf of Lions, Western Mediterranean): Linking the outer shelf and the basin sedimentary records
Provedor de dados: 5
Autores: Dennielou, Bernard; Jallet, Laurent; Sultan, Nabil; Jouet, Gwenael; Giresse, Pierre; Voisset, Michel; Berne, Serge.
Emplacement of post-glacial turbidites is commonly controlled by rapid changes in sea level or by seismicity. On the continental rise of the Gulf of Lions (Western Mediterranean), an aseismic area, we identified turbiditic beds deposited during the rising stage and highstand of sea level. Swath bathymetry, sediment cores, in situ Cone Penetrating Tests (CPTU), heavy mineral associations and radiocarbon dating determined the source, composition, distribution and age of the turbiditic beds. Turbidites are composed of homogeneous to positively graded silts to medium sand with quartz (up to 90%), shell debris and shelfal benthic faunas. Their distribution on the sea floor is very patchy and controlled by abundant inherited erosional bedforms. Their source is...
Tipo: Text
Palavras-chave: Holocene; Late Pleistocene; Sea level; Turbidites; Sand; Outer shelf; Canyons.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6316.pdf

Neogene evolution of the mixed carbonate-siliciclastic system in the Gulf of Papua, Papua New Guinea
Provedor de dados: 5
Autores: Tcherepanov, Evgueni N.; Droxler, Andre W.; Lapointe, Philippe; Dickens, Gerald R.; Bentley, Sam J.; Beaufort, Luc; Peterson, Larry C.; Daniell, James; Opdyke, Bradley N.
This paper outlines the evolution of the late Cenozoic mixed carbonate-siliciclastic depositional system in the Gulf of Papua (GoP), using seismic, gravity, multibeam bathymetry, well data sets, and Landsat imagery. The deposition of the mixed sedimentary sequences was influenced by dynamic interplay of tectonics, eustasy, in situ carbonate production, and siliciclastic sediment supply. The roles of these major factors are estimated during different periods of the GoP margin evolution. The Cenozoic mixed system in the GoP formed in distinct phases. The first phase ( Late Cretaceous-Paleocene) was mostly driven by tectonics. Rifting created grabens and uplifted structural blocks which served later as pedestals for carbonate edifices. Active neritic...
Tipo: Text
Palavras-chave: Great barrier reef; Sea level; Tectonic controls; Ice volume; Platforms; Sedimentation; Fluctuations; Deposition; Australia; Foreland basin.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00208/31939/30357.pdf

The Contribution of Wind-Generated Waves to Coastal Sea-Level Changes
Provedor de dados: 5
Autores: Dodet, Guillaume; Melet, Angélique; Ardhuin, Fabrice; Bertin, Xavier; Idier, Déborah; Almar, Rafael.
Surface gravity waves generated by winds are ubiquitous on our oceans and play a primordial role in the dynamics of the ocean–land–atmosphere interfaces. In particular, wind-generated waves cause fluctuations of the sea level at the coast over timescales from a few seconds (individual wave runup) to a few hours (wave-induced setup). These wave-induced processes are of major importance for coastal management as they add up to tides and atmospheric surges during storm events and enhance coastal flooding and erosion. Changes in the atmospheric circulation associated with natural climate cycles or caused by increasing greenhouse gas emissions affect the wave conditions worldwide, which may drive significant changes in the wave-induced coastal hydrodynamics....
Tipo: Text
Palavras-chave: Wind waves; Sea level; Coastal zone; Climate change.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00509/62046/66721.pdf

Sea Level and Climate
Provedor de dados: 5
Autores: Harff, Jan; Flemming, Nicholas C; Groh, Andreas; Hunicke, Birgit; Lericolais, Gilles; Meschede, Martin; Rosentau, Alar; Sakellariou, Dimitris; Uscinowicz, Szymon; Zhang, Wenyan; Zorita, Eduardo.
This chapter gives an overview of the environmental changes to the European shelf and its marginal seas during the Late Pleistocene to the Middle Holocene. It first explains the regional tectonics of Europe. The age of the consolidation of the basement together with the plate tectonic setting serves as the main parameters determining coastal formation. Next, the chapter reviews the fluctuation of glacial and interglacial stadia as an effect of orbital parameters of the Earth around the Sun. In addition, it examines eustatic change during the Last Glacial Cycle (LGC). The chapter also describes the development of the Baltic Sea, the North Sea and the Atlantic shelf, based on numerical sea-level scenarios constrained by observational data. Finally, it...
Tipo: Text
Palavras-chave: Baltic Sea; Climate change; Coastal formation; Environmental changes; European continental shelf; Eustatic change; Late Pleistocene; Middle Holocene; Sea level.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00391/50263/51051.pdf

Evidence for a differential sea level rise between hemispheres over the twentieth century
Provedor de dados: 5
Autores: Woeppelmann, Guy; Marcos, Marta; Santamaria-gomez, Alvaro; Martin-miguez, Belen; Bouin, Marie-noelle; Gravelle, Mederic.
Tide gauge records are the primary source of sea level information over multidecadal to century timescales. A critical issue in using this type of data to determine global climate-related contributions to sea level change concerns the vertical motion of the land upon which the gauges are grounded. Here we use observations from the Global Positioning System for the correction of this vertical land motion. As a result, the spatial coherence in the rates of sea level change during the twentieth century is highlighted at the local and the regional scales, ultimately revealing a clearly distinct behavior between the Northern and the Southern Hemispheres with values of 2.0mm/yr and 1.1mm/yr, respectively. Our findings challenge the widely accepted value of...
Tipo: Text
Palavras-chave: Sea level; Climate change; Land motion; Geodesy; Tide gauge; GPS.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00489/60025/63282.pdf

Measuring Global Ocean Heat Content to Estimate the Earth Energy Imbalance
Provedor de dados: 5
Autores: Meyssignac, Benoit; Boyer, Tim; Zhao, Zhongxiang; Hakuba, Maria Z.; Landerer, Felix W.; Stammer, Detlef; Koehl, Armin; Kato, Seiji; L'Ecuyer, Tristan; Ablain, Michael; Abraham, John Patrick; Blazquez, Alejandro; Cazenave, Anny; Church, John A.; Cowley, Rebecca; Cheng, Lijing; Domingues, Catia M.; Giglio, Donata; Gouretski, Viktor; Ishii, Masayoshi; Johnson, Gregory C.; Killick, Rachel E.; Legler, David; Llovel, William; Lyman, John; Palmer, Matthew Dudley; Piotrowicz, Steve; Purkey, Sarah G.; Roemmich, Dean; Roca, Rmy; Savita, Abhishek; Von Schuckmann, Karina; Speich, Sabrina; Stephens, Graeme; Wang, Gongjie; Wijffels, Susan Elisabeth; Zilberman, Nathalie.
The energy radiated by the Earth toward space does not compensate the incoming radiation from the Sun leading to a small positive energy imbalance at the top of the atmosphere (0.4-1 Wm(-2)). This imbalance is coined Earth's Energy Imbalance (EEI). It is mostly caused by anthropogenic greenhouse gas emissions and is driving the current warming of the planet. Precise monitoring of EEI is critical to assess the current status of climate change and the future evolution of climate. But the monitoring of EEI is challenging as EEI is two orders of magnitude smaller than the radiation fluxes in and out of the Earth system. Over 93% of the excess energy that is gained by the Earth in response to the positive EEI accumulates into the ocean in the form of heat. This...
Tipo: Text
Palavras-chave: Ocean heat content; Sea level; Ocean mass; Ocean surface fluxes; ARGO; Altimetry; GRACE; Earth Energy Imbalance.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00675/78723/80997.pdf

Altimetry for the future: Building on 25 years of progress
Provedor de dados: 5
Autores: Abdalla, Saleh; Abdeh Kolahchi, Abdolnabi; Adusumilli, Susheel; Aich Bhowmick, Suchandra; Alou-font, Eva; Amarouche, Laiba; Andersen, Ole Baltazar; Antich, Helena; Aouf, Lotfi; Arbic, Brian; Armitage, Thomas; Arnault, Sabine; Artana, Camila; Aulicino, Giuseppe; Ayoub, Nadia; Badulin, Sergei; Baker, Steven; Banks, Chris; Bao, Lifeng; Barbetta, Silvia; Barceló-llull, Bàrbara; Barlier, François; Basu, Sujit; Bauer-gottwein, Peter; Becker, Matthias; Beckley, Brian; Bellefond, Nicole; Belonenko, Tatyana; Benkiran, Mounir; Benkouider, Touati; Bennartz, Ralf; Benveniste, Jérôme; Bercher, Nicolas; Berge-nguyen, Muriel; Bettencourt, Joao; Blarel, Fabien; Blazquez, Alejandro; Blumstein, Denis; Bonnefond, Pascal; Borde, Franck; Bouffard, Jérôme; Boy, François; Boy, Jean-paul; Brachet, Cédric; Brasseur, Pierre; Braun, Alexander; Brocca, Luca; Brockley, David; Brodeau, Laurent; Brown, Shannon; Bruinsma, Sean; Bulczak, Anna; Buzzard, Sammie; Cahill, Madeleine; Calmant, Stéphane; Calzas, Michel; Camici, Stefania; Cancet, Mathilde; Capdeville, Hugues; Carabajal, Claudia Cristina; Carrere, Loren; Cazenave, Anny; Chassignet, Eric P.; Chauhan, Prakash; Cherchali, Selma; Chereskin, Teresa; Cheymol, Cecile; Ciani, Daniele; Cipollini, Paolo; Cirillo, Francesca; Cosme, Emmanuel; Coss, Steve; Cotroneo, Yuri; Cotton, David; Couhert, Alexandre; Coutin-faye, Sophie; Crétaux, Jean-françois; Cyr, Frederic; D’ovidio, Francesco; Darrozes, José; David, Cedric; Dayoub, Nadim; De Staerke, Danielle; Deng, Xiaoli; Desai, Shailen; Desjonqueres, Jean-damien; Dettmering, Denise; Di Bella, Alessandro; Díaz-barroso, Lara; Dibarboure, Gerald; Dieng, Habib Boubacar; Dinardo, Salvatore; Dobslaw, Henryk; Dodet, Guillaume; Doglioli, Andrea; Domeneghetti, Alessio; Donahue, David; Dong, Shenfu; Donlon, Craig; Dorandeu, Joël; Drezen, Christine; Drinkwater, Mark; Du Penhoat, Yves; Dushaw, Brian; Egido, Alejandro; Erofeeva, Svetlana; Escudier, Philippe; Esselborn, Saskia; Exertier, Pierre; Fablet, Ronan; Falco, Cédric; Farrell, Sinead Louise; Faugere, Yannice; Femenias, Pierre; Fenoglio, Luciana; Fernandes, Joana; Fernández, Juan Gabriel; Ferrage, Pascale; Ferrari, Ramiro; Fichen, Lionel; Filippucci, Paolo; Flampouris, Stylianos; Fleury, Sara; Fornari, Marco; Forsberg, Rene; Frappart, Frédéric; Frery, Marie-laure; Garcia, Pablo; Garcia-mondejar, Albert; Gaudelli, Julia; Gaultier, Lucile; Getirana, Augusto; Gibert, Ferran; Gil, Artur; Gilbert, Lin; Gille, Sarah; Giulicchi, Luisella; Gómez-enri, Jesús; Gómez-navarro, Laura; Gommenginger, Christine; Gourdeau, Lionel; Griffin, David; Groh, Andreas; Guerin, Alexandre; Guerrero, Raul; Guinle, Thierry; Gupta, Praveen; Gutknecht, Benjamin D.; Hamon, Mathieu; Han, Guoqi; Hauser, Danièle; Helm, Veit; Hendricks, Stefan; Hernandez, Fabrice; Hogg, Anna; Horwath, Martin; Idžanović, Martina; Janssen, Peter; Jeansou, Eric; Jia, Yongjun; Jia, Yuanyuan; Jiang, Liguang; Johannessen, Johnny A.; Kamachi, Masafumi; Karimova, Svetlana; Kelly, Kathryn; Kim, Sung Yong; King, Robert; Kittel, Cecile M.m.; Klein, Patrice; Klos, Anna; Knudsen, Per; Koenig, Rolf; Kostianoy, Andrey; Kouraev, Alexei; Kumar, Raj; Labroue, Sylvie; Lago, Loreley Selene; Lambin, Juliette; Lasson, Léa; Laurain, Olivier; Laxenaire, Rémi; Lázaro, Clara; Le Gac, Sophie; Le Sommer, Julien; Le Traon, Pierre-yves; Lebedev, Sergey; Léger, Fabien; Legresy, Benoı̂t; Lemoine, Frank; Lenain, Luc; Leuliette, Eric; Levy, Marina; Lillibridge, John; Liu, Jianqiang; Llovel, William; Lyard, Florent; Macintosh, Claire; Makhoul Varona, Eduard; Manfredi, Cécile; Marin, Frédéric; Mason, Evan; Massari, Christian; Mavrocordatos, Constantin; Maximenko, Nikolai; Mcmillan, Malcolm; Medina, Thierry; Melet, Angelique; Meloni, Marco; Mertikas, Stelios; Metref, Sammy; Meyssignac, Benoit; Michaël, Ablain; Minster, Jean-françois; Moreau, Thomas; Moreira, Daniel; Morel, Yves; Morrow, Rosemary; Moyard, John; Mulet, Sandrine; Naeije, Marc; Nerem, Robert Steven; Ngodock, Hans; Nielsen, Karina; Nilsen, Jan Even Øie; Niño, Fernando; Nogueira Loddo, Carolina; Noûs, Camille; Obligis, Estelle; Otosaka, Inès; Otten, Michiel; Oztunali Ozbahceci, Berguzar; P. Raj, Roshin; Paiva, Rodrigo; Paniagua, Guillermina; Paolo, Fernando; Paris, Adrien; Pascual, Ananda; Passaro, Marcello; Paul, Stephan; Pavelsky, Tamlin; Pearson, Christopher; Penduff, Thierry; Peng, Fukai; Perosanz, Felix; Picot, Nicolas; Piras, Fanny; Poggiali, Valerio; Poirier, Étienne; Ponce De León, Sonia; Prants, Sergey; Prigent, Catherine; Provost, Christine; Pujol, M-isabelle; Qiu, Bo; Quilfen, Yves; Rami, Ali; Raney, R. Keith; Raynal, Matthias; Remy, Elisabeth; Rémy, Frédérique; Restano, Marco; Richardson, Annie; Richardson, Donald; Ricker, Robert; Ricko, Martina; Rinne, Eero; Rose, Stine Kildegaard; Rosmorduc, Vinca; Rudenko, Sergei; Ruiz, Simón; Ryan, Barbara J.; Salaün, Corinne; Sanchez-roman, Antonio; Sandberg Sørensen, Louise; Sandwell, David; Saraceno, Martin; Scagliola, Michele; Schaeffer, Philippe; Scharffenberg, Martin G.; Scharroo, Remko; Schiller, Andreas; Schneider, Raphael; Schwatke, Christian; Scozzari, Andrea; Ser-giacomi, Enrico; Seyler, Frederique; Shah, Rashmi; Sharma, Rashmi; Shaw, Andrew; Shepherd, Andrew; Shriver, Jay; Shum, C.k.; Simons, Wim; Simonsen, Sebatian B.; Slater, Thomas; Smith, Walter; Soares, Saulo; Sokolovskiy, Mikhail; Soudarin, Laurent; Spatar, Ciprian; Speich, Sabrina; Srinivasan, Margaret; Srokosz, Meric; Stanev, Emil; Staneva, Joanna; Steunou, Nathalie; Stroeve, Julienne; Su, Bob; Sulistioadi, Yohanes Budi; Swain, Debadatta; Sylvestre-baron, Annick; Taburet, Nicolas; Tailleux, Rémi; Takayama, Katsumi; Tapley, Byron; Tarpanelli, Angelica; Tavernier, Gilles; Testut, Laurent; Thakur, Praveen K.; Thibaut, Pierre; Thompson, Luanne; Tintoré, Joaquín; Tison, Céline; Tourain, Cédric; Tournadre, Jean; Townsend, Bill; Tran, Ngan; Trilles, Sébastien; Tsamados, Michel; Tseng, Kuo-hsin; Ubelmann, Clément; Uebbing, Bernd; Vergara, Oscar; Verron, Jacques; Vieira, Telmo; Vignudelli, Stefano; Vinogradova Shiffer, Nadya; Visser, Pieter; Vivier, Frederic; Volkov, Denis; Von Schuckmann, Karina; Vuglinskii, Valerii; Vuilleumier, Pierrik; Walter, Blake; Wang, Jida; Wang, Chao; Watson, Christopher; Wilkin, John; Willis, Josh; Wilson, Hilary; Woodworth, Philip; Yang, Kehan; Yao, Fangfang; Zaharia, Raymond; Zakharova, Elena; Zaron, Edward D.; Zhang, Yongsheng; Zhao, Zhongxiang; Zinchenko, Vadim; Zlotnicki, Victor.
In 2018 we celebrated 25 years of development of radar altimetry, and the progress achieved by this methodology in the fields of global and coastal oceanography, hydrology, geodesy and cryospheric sciences. Many symbolic major events have celebrated these developments, e.g., in Venice, Italy, the 15th (2006) and 20th (2012) years of progress and more recently, in 2018, in Ponta Delgada, Portugal, 25 Years of Progress in Radar Altimetry. On this latter occasion it was decided to collect contributions of scientists, engineers and managers involved in the worldwide altimetry community to depict the state of altimetry and propose recommendations for the altimetry of the future. This paper summarizes contributions and recommendations that were collected and...
Tipo: Text
Palavras-chave: Satellite altimetry; Oceanography; Sea level; Coastal oceanography; Cryospheric sciences; Hydrology.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00688/79999/82978.pdf

Characteristics of the convergence zone at the eastern edge of the Pacific warm pool
Provedor de dados: 5
Autores: Maes, Christophe; Picaut, Joël; Kuroda, Yoshifumi; Ando, Kentaro.
The characteristics of the convergence zone at the eastern edge of the equatorial Pacific warm pool are studied using a compilation of in-situ current and salinity measurements during the period 1992-2001. The displacement of the convergence zone is observed, for the first time, as far west as 140degreesE in the far western Pacific, mainly during La Nina periods, and near 140degreesW in the central Pacific during the 1997-98 El Nino. The convergence zone may be associated with a salinity front dividing the fresh waters of the warm pool from the salty waters upwelled in the central equatorial Pacific. Despite a zonal displacement ranging over about one fifth of the equatorial circumference of the earth, the characteristics of the main parameters involved in...
Tipo: Text
Palavras-chave: Nino la nina; El nino; Salinity variability; Southern oscillation; Fresh pool; Sea level; Displacements; Temperature; Model; Ocean.
Ano: 2004
URL: https://archimer.ifremer.fr/doc/00208/31888/30307.pdf

The timing and evolution of the post-glacial transgression across the Sea of Marmara shelf south of Istanbul
Provedor de dados: 5
Autores: Eris, K; Ryan, W; Cagatay, M; Sancar, U; Lericolais, Gilles; Menot, G; Bard, E.
High-resolution reflection seismic profiles with core analyses of sedimentary sequence near the Sea of Marmara (SoM) entrance to the Strait of İstanbul (SoI, Bosphorus) provide detailed record of sealevel changes since the Late Glacial Maximum (LGM). The sequence is deposited over the LGM erosional surface at a maximum depth of -105 m. It includes seven seismic units that can be confidently correlated with 14C-dated sedimentary units in the cores. Unit 6 represents levee deposits of the paleo-SoI channel that was deposited by a Black Sea outflow during 11.2-10.6 kyr BP. The reflection surfaces at base of Unit 5 and 4 correspond to wave-cut terraces at -71and -63 m, respectively, and are estimated to be 10.6 and 9.8 kyr BP. The seismic Unit 2, overlaying a...
Tipo: Text
Palavras-chave: Sapropel; Delta; Marmara Sea; Holocene; Sea level; Seismic stratigraphy.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3574.pdf

Satellite altimetry and ocean dynamics
Provedor de dados: 5
Autores: Fu, Lee Lueng; Le Traon, Pierre-yves.
This paper provides a summary of recent results derived from satellite altimetry. It is focused on altimetry and ocean dynamics with synergistic use of other remote sensing techniques, in-situ data and integration aspects through data assimilation. Topics include mean ocean circulation and geoid issues, tropical dynamics and large-scale sea level and ocean circulation variability, high-frequency and intraseasonal variability, Rossby waves and mesoscale variability.
Tipo: Text
Palavras-chave: Rossby waves; Large scale; Mesoscale; Sea level; Ocean dynamics; Satellite altimetry; Ondes de Rossby; Grande échelle; Mésoéchelle; Niveau de la mer; Dynamique de l'océan; Altimétrie satellitaire.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2175.pdf

Prediction of sea level anomalies using ocean circulation model forced by scatterometer wind and validation using TOPEX/Poseidon data
Provedor de dados: 5
Autores: Quilfen, Yves; Bentamy, Abderrahim; Delecluse, P; Katsaros, K; Grima, N.
Uncertainties in the surface wind field have long been recognized as a major limitation in the interpretation of results obtained by oceanic circulation models. It is especially true in the tropical oceans, where the response to wind forcing is very strong on short time scales. The purpose of this paper is to show that these uncertainties can be greatly reduced by using spaceborne wind sensors that provide accurate measurements on a global basis.Surface winds over the global oceans have been measured by scatterometry since the launch of the European Remote Sensing Satellite (ERS-1) in August 1991 by the European Space Agency, Noordwijk, The Netherlands, and is currently provided by ERS-2, launched in April 1995. The ground track wind vectors are processed...
Tipo: Text
Palavras-chave: Ocean model; Ocean surface; Scatterometer; Sea level.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00000/10501/9560.pdf

Contribution of the Amazon River Discharge to Regional Sea Level in the Tropical Atlantic Ocean
Provedor de dados: 5
Autores: Giffard, Pierrick; Llovel, William; Jouanno, Julien; Morvan, Guillaume; Decharme, Bertrand.
Tipo: Text
Palavras-chave: Sea level; Amazon River; River plume; Salinity; Model; NEMO; Tropical Atlantic.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00591/70268/68327.pdf

Perspectives on present-day sea level change: a tribute to Christian le Provost
Provedor de dados: 5
Autores: Lombard, Alix; Cazenave, Anny; Le Traon, Pierre-yves; Guinehut, Stephanie; Cabanes, Cecile.
In this paper, we first discuss the controversial result of the work by Cabanes et al. (Science 294:840-842, 2001), who suggested that the rate of past century sea level rise may have been overestimated, considering the limited and heterogeneous location of historical tide gauges and the high regional variability of thermal expansion which was supposed to dominate the observed sea level. If correct, this conclusion would have solved the problem raised by the IPCC third assessment report [Church et al, Cambridge University Press, Cambridge, pp 881, 2001], namely, the factor two difference between the 20th century observed sea level rise and the computed climatic contributions. However, recent investigations based on new ocean temperature data sets indicate...
Tipo: Text
Palavras-chave: Ocean warming; Climate change; Thermal expansion; Sea level.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-2201.pdf

Orbital and suborbital climate variability in the Sulu Sea, western tropical Pacific
Provedor de dados: 5
Autores: Oppo, Dw; Linsley, Bk; Rosenthal, Y; Dannenmann, S; Beaufort, L.
A detailed record of planktic delta(18)O from a sediment core in the Sulu Sea, located between the South China Sea and the western Pacific warm pool, reveals that for the past 400 kyr (1 kyr = 1000 years), delta(18)O variability on orbital timescales is similar to that caused by changes in ice volume alone. This result indicates that in the Sulu Sea, temperature-driven changes in planktic delta(18)O on orbital times scales were generally compensated for by the effects of sea level and changes in seasonal monsoon intensity on the local freshwater budget, as well as by other changes in the tropical hydrologic cycle and their attendant effects on surface water delta(18)O. Increased freshening of the western tropical Pacific warm pool is reminiscent of La Nina...
Tipo: Text
Palavras-chave: Sulu Sea; Tropical hydrography; East Asian monsoon; IMAGES; Suborbital climate variability; Sea level; Paleoceanography; Marginal and semienclosed seas; Climate dynamics.
Ano: 2003
URL: https://archimer.ifremer.fr/doc/00226/33680/32047.pdf

Les surcotes et les décotes marines à Brest, étude statistique et évolution
Provedor de dados: 5
Autores: Bouligand, R; Pirazzoli, Pa.
Sea surges (positive or negative) are short-period events (several hours to several days) among the most extreme oceanic phenomena resulting from climatic variability. A statistical study of hourly tide-gauge records at Brest does not allow any clear trend in long-term variations of these extreme sea levels to be detected. However, the frequency of extreme positive sea surges has increased recently (1953-1994), whereas extreme and sub-extreme negative sea surges has decreased. Such trends for the highest values strengthen the prevalence of positive sea surges over negative ones. The general evolution appears to be organised around several time scales, with a strong interannual variability superimposed on periods of amplification or regression of decennial...
Tipo: Text
Palavras-chave: Niveau marin; Surcotes et décotes marines; Fréquence; Évolution; Brest; Sea level; Positive and negative sea surges; Frequency; Trend; Brest.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43617/43918.pdf

Facteurs de contrôle sur le fonctionnement du système turbiditique du Rhône depuis le Dernier Maximum Glaciaire
Provedor de dados: 5
Autores: Lombo Tombo, Swesslath.
Turbidite systems are accumulations of fluvial sediment on the continental margins. They are mainly made of « turbidites » deposited after the flow of turbidity currents inside submarine canyons and channels. Their structure and composition are controlled by global and regional environmental changes such as sea level and climate. The two fundamental parameters that govern their functioning are the production of sediment in the river watersheds and the capability and reactivity of the transfer to the turbidite system. In this work we show that for the last 24,000 years the functioning of the Rhone turbidite system has shown rapid changes under the control of sea level and sediment production fluctuations. Our results are based on a millennial time-scale...
Tipo: Text
Palavras-chave: Hyperpycnite; Turbidites; Système turbiditique du Rhône; Facteurs de contrôle; Niveau marin; Climat; Morphologie; Golfe du Lion; Méditerranée occidentale; Hyperpycnites; Turbidites; Rhone turbidite system; Control factors; Sea level; Climate; Morphology; Gulf of Lions; Western Mediterranean.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00274/38505/37013.pdf

Impact of multiple altimeter data and mean dynamic topography in a global analysis and forecasting system
Provedor de dados: 5
Autores: Hamon, Mathieu; Greiner, Eric; Le Traon, Pierre-yves; Remy, Elisabeth.
Satellite altimetry is one of the main sources of information used to constrain global ocean analysis and forecasting systems. In addition to in situ vertical temperature and salinity profiles, and Sea Surface Temperature (SST) data, Sea Level Anomalies (SLA) from multiple altimeters are assimilated through the knowledge of a surface reference, the Mean Dynamic Topography (MDT). The quality of analyses and forecasts mainly depends on the availability of SLA observations and on the accuracy of the MDT. A series of Observing System Evaluations (OSEs) were conducted to assess the relative importance of the number of assimilated altimeters and the accuracy of the MDT in a Mercator Ocean global ¼° ocean data assimilation system. Dedicated tools were used to...
Tipo: Text
Palavras-chave: Ocean; Sea level; Remote sensing; Forecast verification; Skill; Operational forecasting; General circulation models.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00502/61389/65053.pdf

A 1.2 Ma record of glaciation and fluvial discharge from the West European Atlantic margin
Provedor de dados: 5
Autores: Toucanne, Samuel; Zaragosi, S.; Bourillet, Jean-francois; Gibbard, P. L.; Eynaud, F.; Giraudeau, J.; Turon, J. L.; Cremer, M.; Cortijo, E.; Martinez, P.; Rossignol, L.
The correlation of continental sedimentary records with the marine isotope stratigraphy is a challenge of central importance in Quaternary stratigraphy, particularly in Western Europe where long records of glaciation on land areas are particularly rare. Here we demonstrate for the first time the interrelationship of events during the last 1.2 Ma in an ocean-sediment core from the Bay of Biscay (NE Atlantic), SW of the Channel. The identification of discharge variations from tributary river systems to the 'Fleuve Manche' palaeoriver during glacio-eustatic sea-level lowstands demonstrates the correlation of the marine sediment stratigraphy to the expansion and recession of the European ice-sheets. The amplitude and chronology of European ice-sheet...
Tipo: Text
Palavras-chave: Middle pleistocene transition; Ice sheet dynamics; Sea level; Climate change; North Atlantic; English channel; Heinrich events; Fleuve manche; Deep; Origin.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6956.pdf

The timing of Mediterranean sapropel deposition relative to insolation, sea-level and African monsoon changes
Provedor de dados: 5
Autores: Grant, K. M.; Grimm, R.; Mikolajewicz, U.; Marino, G.; Ziegler, M.; Rohling, E. J.
The Mediterranean basin is sensitive to global sea-level changes and African monsoon variability on orbital timescales. Both of these processes are thought to be important to the deposition of organic-rich sediment layers or 'sapropels' throughout the eastern Mediterranean, yet their relative influences remain ambiguous. A related issue is that an assumed 3-kyr lag between boreal insolation maxima and sapropel mid-points remains to be tested. Here we present new geochemical and ice-volume-corrected planktonic foraminiferal stable isotope records for sapropels S1 (Holocene), S3, S4, and S5 (Marine Isotope Stage 5) in core LC21 from the southern Aegean Sea. The records have a radiometrically constrained chronology that has already been synchronised with the...
Tipo: Text
Palavras-chave: Eastern Mediterranean; Sapropels; African monsoon; Sea level; Ice sheets; Insolation; Precession; Meltwater pulses.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00421/53245/83374.pdf

The pianosa contourite depositional system (northern Tyrrhenian sea): drift morphology and plio-quaternary stratigraphic evolution
Provedor de dados: 5
Autores: Miramontes Garcia, Elda; Cattaneo, Antonio; Jouet, Gwenael; Thereau, Estelle; Thomas, Yannick; Rovere, Mickael; Cauquil, E.; Trincardi, F.
The Pianosa Contourite Depositional System (CDS) is located in the Corsica Trough (Northern Tyrrhenian Sea), a confined basin dominated by mass transport and contour currents in the eastern flank and by turbidity currents in the western flank. The morphologic and stratigraphic characterisation of the Pianosa CDS is based on multibeam bathymetry, seismic reflection data (multi-channel high resolution mini GI gun, single-channel sparker and CHIRP), sediment cores and ADCP data. The Pianosa CDS is located at shallow to intermediate water depths (170 to 850 m water depth) and is formed under the influence of the Levantine Intermediate Water (LIW). It is 120 km long, has a maximum width of 10 km and is composed of different types of muddy sediment drifts:...
Tipo: Text
Palavras-chave: Sediment drift; Bottom current; Levantine Intermediate Water; Modified Atlantic Water; Mediterranean Sea; Sea level.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00292/40330/38834.pdf

The Catalan margin during the Messinian Salinity Crisis: Physiography, morphology and sedimentary record
Provedor de dados: 5
Autores: Garcia, Marga; Maillard, Agnès; Aslanian, Daniel; Rabineau, Marina; Alonso, Belen; Gorini, Christian; Estrada, Ferran.
The Messinian Salinity Crisis (MSC) drastically affected the physiography, morphology and sedimentation all along the Mediterranean area at the end of the Miocene. This paper presents an analysis of the effects of the MSC on the Catalan continental margin, based on a broad database of seismic reflection profiles from the oil industry and academy. We study the sedimentary processes and their controlling factors and the correlation with the nearby and well-known Gulf of Lions. Because of the complexity of the MSC, we define the Margin Erosion Surface/Top Erosion Surface (MES/TES) as the surface marking the end of the Messinian event, which allows differentiating three domains along the Catalan margin: the Creus, Girona and Barcelona domains, separated by the...
Tipo: Text
Palavras-chave: Valencia Basin; Catalan Margin; Messinian Salinity Crisis; Sea level; Drainage systems.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00041/15196/13319.pdf

Reef Carbonate Productivity During Quaternary Sea Level Oscillations
Provedor de dados: 5
Autores: Husson, L.; Pastier, A. -m.; Pedoja, K.; Elliot, M.; Paillard, D.; Authemayou, C.; Sarr, A. -c.; Schmitt, A.; Cahyarini, S. Y.
Global variations in reef productivity during the Quaternary depend on external parameters that may alter the global chemical balance in the oceans and atmosphere. We designed a numerical model that simulates reef growth, erosion, and sedimentation on coastlines undergoing sea level oscillations, and uplift or subsidence. We further develop a probabilistic evaluation that accounts for variable vertical ground motion, erosion, and foundation morphologies. Absolute sea level change appears primordial, as productivity must have increased by an order of magnitude since the onset of the glacial cycles, approximate to 2.6 Ma. But most important is relative sea level change, i.e., eustasy modulated by uplift or subsidence, that rejuvenates the accommodation space...
Tipo: Text
Palavras-chave: Coral reefs; Sea level; Carbonate; Modeling; Paleoclimate.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00638/74993/75789.pdf

Sea surface height variations in the South China Sea from satellite altimetry
Provedor de dados: 5
Autores: Shaw, Pt; Chao, Sy; Fu, Ll.
Sea surface elevation in the South China Sea is examined in the Topex/Poseidon altimeter data from 1992 to 1995. Sea level anomalies are smoothed along satellite tracks and in time with tidal errors reduced by harmonic analysis. The smoothed data are sampled every ten days with an along-track separation of about 40 km. The data reveal significant annual variations in sea level. In winter, low sea level is over the entire deep basin with two local lows centred off Luzon and the Sunda Shelf. In summer, sea level is high off Luzon and off the Sunda Shelf, and a low off Vietnam separates the two highs. The boundary between the Vietnam low and Sunda high coincides with the location of a jet leaving the coast of Vietnam described in earlier studies. Principal...
Tipo: Text
Palavras-chave: Mer de Chine méridionale; Niveau de la mer; Rotationnel du vent; Altimétrie satellitale; Topex/Poseidon; South China Sea; Sea level; Wind stress curl; Altimetry; Topex Poseidon.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43624/43259.pdf

Late Holocene oceanographic and climate change from the western European margin: the results of the HOLSMEER project
Provedor de dados: 5
Autores: Scourse, James; Sejrup, Hans Petter; Jones, Phil D.
The underlying aim of the HOLSMEER project has been to improve our understanding of natural climate variability through the search for, interpretation and quantification of, climatic variability in very high-resolution shallow marine records from Atlantic Europe covering the last 2000 years. This has been achieved through detailed analyses of a series of coastal and shallow marine sites spanning the Atlantic seaboard from Iberia to western Norway, and extending across to Iceland. HOLSMEER partners have documented pronounced instability in the thermohaline circulation (THC) during the period immediately prior to the recent significant anthropogenic impact on the environment. For the first time we have been able to document that these changes in the coastal...
Tipo: Text
Palavras-chave: Holocene; Palaeoclimate; Marine; Thermohaline circulation; Sea level; Arctica islandica; Transfer function; HOLSMEER project; North Atlantic Ocean; Western European margin.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/00234/34504/33458.pdf

Importations et remaniements de thanatofaunes dans les sables de la plate-forme profonde des approches occidentales de la Manche
Provedor de dados: 5
Autores: Reynaud, Jean-yves; Lauriat-rage, Agnès; Tessier, Bernadette; Neraudeau, Didier; Braccini, Eric; Carriol, René-pierre; Clet-pellerin, Martine; Moullade, Michel; Lericolais, Gilles.
Macro- and micro-faunas are reported from six gravity cores collected at a mean depth of 150 m in the surficial deposits of the Kaiser sand bank in the Southern Western Channel Approaches. These are bivalves (mainly), gastropods, echinids, crustaceans and foraminifers. These fauna present a very rich association of numerous, well preserved species from various ecological settings. Such an association is commonly reported from the continental shelf of the last transgressive cycle. In addition, the sediment comprises two imported faunal associations. The first one corresponds to thanatocaenoses of Pliocene/lowermost Pleistocene and Weichselian age, reworked respectively from the underlying celtic incised valley fills and the Celtic Sand Banks. The absence of...
Tipo: Text
Palavras-chave: Continental shelf; Thanatofauna; Sea level; Reworking; Transport.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00146/25682/23843.pdf

An assessment of global and regional sea level for years 1993-2007 in a suite of interannual CORE-II simulations
Provedor de dados: 5
Autores: Griffies, Stephen M.; Yin, Jianjun; Durack, Paul J.; Goddard, Paul; Bates, Susan C.; Behrens, Erik; Bentsen, Mats; Bi, Daohua; Biastoch, Arne; Boening, Claus W.; Bozec, Alexandra; Chassignet, Eric; Danabasoglu, Gokhan; Danilov, Sergey; Domingues, Catia M.; Drange, Helge; Farneti, Riccardo; Fernandez, Elodie; Greatbatch, Richard J.; Holland, David M.; Ilicak, Mehmet; Large, William G.; Lorbacher, Katja; Lu, Jianhua; Marsland, Simon J.; Mishra, Akhilesh; Nurser, A. J. George; Salas Y Melia, David; Palter, Jaime B.; Samuels, Bonita L.; Schroeter, Jens; Schwarzkopf, Franziska U.; Sidorenko, Dmitry; Treguier, Anne-marie; Tseng, Yu-heng; Tsujino, Hiroyuki; Uotila, Petteri; Valcke, Sophie; Voldoire, Aurore; Wang, Qiang; Winton, Michael; Zhang, Xuebin.
The Palomares Margin, an NNE–SSW segment of the South Iberian Margin located between the Alboran and the Algerian–Balearic basins, is dissected by two major submarine canyon systems: the Gata (in the South) and the Alías–Almanzora (in the North). New swath bathymetry, side-scan sonar images, accompanied by 5 kHz and TOPAS subbottom profiles, allow us to recognize these canyons as Mediterranean examples of medium-sized turbidite systems developed in a tectonically active margin.  The Gata Turbidite System is confined between residual basement seamounts and exhibits incised braided channels that feed a discrete deep-sea fan, which points to a dominantly coarse-grained turbiditic system. The Alías–Almanzora Turbidite System, larger and less confined, is a...
Tipo: Text
Palavras-chave: Sea level; CORE global ocean-ice simulations; Steric sea level; Global sea level; Ocean heat content.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00188/29904/28349.pdf

Sea-level control on the connection between shelf-edge deltas and the Bourcart canyon head (western Mediterranean) during the last glacial/interglacial cycle
Provedor de dados: 5
Autores: Mauffrey, M. A.; Berne, Serge; Jouet, Gwenael; Giresse, P.; Gaudin, M.
A dense grid of high- and very high resolution seismic data, together with piston cores and borehole data providing time constraints, enables us to reconstruct the history of the Bourcart canyon head in the western Mediterranean Sea during the last glacial/interglacial cycle. The canyon fill is composed of confined channel–levee systems fed by a series of successively active shelf fluvial systems, originating from the west and north. Most of the preserved infill corresponds to the interval between Marine Isotope Stage (MIS) 3 and the early deglacial (19 cal ka BP). Its deposition was strongly controlled by a relative sea level that impacted the direct fluvial/canyon connection. During a period of around 100 kyr between MIS 6 and MIS 2, the canyon...
Tipo: Text
Palavras-chave: Submarine canyon; Confined channel-levee systems; Mass transport deposits; Bond cycles; Sea level.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00281/39243/37808.pdf

Effect of river runoff on sea level from in-situ measurements and numerical models in the Bay of Biscay
Provedor de dados: 5
Autores: Laiz, Irene; Ferrer, Luis; Plomaritis, Theocharis A.; Charria, Guillaume.
Daily time series of in-situ tide gauge records and river runoff data were analysed to investigate the contribution of river discharge storm events to sea level in the Bay of Biscay. Three main river systems were considered for this study, representing cases of small (Nervión, 1900 km2), medium (Adour, 16880 km2) and large (Gironde, 84811 km2) watershed basins. Typical storms correspond to water discharge rates of 150, 700, and 1100 m3 s−1 from the Nervión, Adour, and Gironde rivers, respectively. The effect of these events on daily mean sea level was evaluated using two different approaches: (1) through the analysis of time series of tide gauges placed within the river mouths; and (2) through numerical simulations using the ROMS model (Regional Ocean...
Tipo: Text
Palavras-chave: Bay of Biscay; Sea level; Tide gauges; River discharge; ROMS modelling.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00169/28070/26285.pdf

Late Glacial to Preboreal sea-level rise recorded by the Rhone deltaic system (NW Mediterranean)
Provedor de dados: 5
Autores: Berne, Serge; Jouet, Gwenael; Bassetti, Maria-angela; Dennielou, Bernard; Taviani, M.
A unique late Glacial-Preboreal record of changes in sea-level and sediment fluxes originating from the Alps is recorded in the Rhone subaqueous delta in the Western Mediterranean Sea. The compilation of detailed bathymetric charts, together with high-resolution seismic profiles and long cores, reveals the detailed architecture of several sediment lobes, related to periods of decreased sea-level rise and/or increased sediment flux. They are situated along the retreat path of the Rhone distributaries, from the shelf edge and canyon heads up to the modem coastline. They form transgressive backstepping parasequences across the shelf, the late Holocene (highstand) deltas being confined to the inner shelf The most prominent feature is an elongated...
Tipo: Text
Palavras-chave: Western Mediterranean sea; Delta; Younger Dryas; Deglacial; Sea level.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3589.pdf

Sea-level control on turbidite activity in the Rhone canyon and the upper fan during the Last Glacial Maximum and early Deglacial
Provedor de dados: 5
Autores: Lombo Tombo, Swesslath; Dennielou, Bernard; Berne, Serge; Bassetti, Maria-angela; Toucanne, Samuel; Jorry, Stephan; Jouet, Gwenael; Fontanier, Christophe.
The timing, routing and processes of sediment transfer from the continents to the oceans at millennial time-scale are still largely unknown. The potential of turbidite systems (dominantly deposited during sea-level lowstands) to record global or regional environmental fluctuations is usually under-exploited because of the difficulty to obtain robust chronostratigraphic constraints in turbiditic deposits, and therefore to tie changes in sedimentary processes to environmental fluctuations. We were able to obtain a millennial-scale chronostratigraphy based on oxygen isotopes of the scarce foraminifera preserved in turbiditic deposits of the Rhone Turbidite System within the Western Mediterranean. Our results show that 1) objective criteria can be defined for...
Tipo: Text
Palavras-chave: Rhone Turbidite System; Turbidites; Hyperpycnite; Sea level; Last Glacial Maximum; Western Mediterranean.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00266/37712/35730.pdf

A dynamic explanation for the origin of the western Mediterranean organic-rich layers
Provedor de dados: 5
Autores: Rogerson, M.; Cacho, I.; Jimenez-espejo, F.; Reguera, M. I.; Sierro, F. J.; Martinez-ruiz, F.; Frigola, J.; Canals, M.
The eastern Mediterranean sapropels are among the most intensively investigated phenomena in the paleoceanographic record, but relatively little has been written regarding the origin of the equivalent of the sapropels in the western Mediterranean, the organic-rich layers (ORLs). ORLs are recognized as sediment layers containing enhanced total organic carbon that extend throughout the deep basins of the western Mediterranean and are associated with enhanced total barium concentration and a reduced diversity (dysoxic but not anoxic) benthic foraminiferal assemblage. Consequently, it has been suggested that ORLs represent periods of enhanced productivity coupled with reduced deep ventilation, presumably related to increased continental runoff, in close...
Tipo: Text
Palavras-chave: Sapropel; Mediterranean; Sea level; Paleoceanography; Circulation.
Ano: 2008
URL: https://archimer.ifremer.fr/doc/00237/34825/33303.pdf

Un análisis de la estructura termal de la estación costera "La Libertad" y su relación con los eventos ENOS
Provedor de dados: 20
Autores: Zambrano, E.
El Instituto Oceanográfico de la Armada (INOCAR) mantiene desde 1990 hasta la fecha una estación costera a 10 millas náuticas frente a las costas del puerto de La Libertad (Península de Santa Elena), en la que se efectúa un muestreo de toda la columna de agua desde la superficie hasta los 100 m de profundidad, cada 20 días. Del análisis preliminar se ha podido observar que la distribución de las isotermas responde a la presencia de los eventos ENOS; como se conoce durante un episodio ENOS la costa del Ecuador es visitada por ondas ecuatoriales, las cuales a su paso producen una elevación del medio del mar  y una profundización de las isotermas. Por lo que se considera que esta distribución de las isotermas guarda relación con la ocurrencia de los eventos...
Tipo: Journal Contribution
Palavras-chave: Isotherms; Equatorial waves; Sea level; El Nino phenomena; Water temperature; Oceanographic stations; Water temperature; Sea level; Http://aims.fao.org/aos/agrovoc/c_16063; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 1998
URL: http://hdl.handle.net/1834/2197

Predicción del evento El Niño 97-98 en el mar ecuatoriano usando métodos estadísticos
Provedor de dados: 20
Autores: Zambrano, E.; Martínez, R.; Garcés Vargas, J.
Usando series de tiempo de promedios diarios de nivel del mar en años caracterizados por la ocurrencia de eventos El Niño en la estación mareográfica de La Libertad (02°15'S-81°27'W), se aplicaron las técnicas del análisis espectral para determinar la correlación existente entre los eventos pasados y el primer semestre de 1997. Se obtuvieron niveles significativos de coherencia entre el evento El Niño 1982-1983 con el evento del 1997. El análisis espectral comparativo permitió obtener las ondas predominantes, la amplitud y el ángulo de fase de cada una de ellas. Con estos parámetros y aplicando la serie de Fourier, se generó una serie del nivel del mar que permitió predecir el comportamiento del nivel del mar en La Libertas desde julio 97 hasta marzo 98...
Tipo: Journal Contribution
Palavras-chave: Prediction; El Nino phenomena; Spectral analysis; Fourier analysis; Sea level; Oceanographic data; Time series; Prediction; Spectral analysis; Sea level.
Ano: 2000
URL: http://hdl.handle.net/1834/2233

The Global Oceanographic Data Archaeology and Rescue Project (GODAR): Sea Level Data Proposal
Provedor de dados: 20
Autores: Woodworth, Philip; Rickards, Lesley.
At its meeting in May 1999, the IOC Group of Experts on the Global Sea Level Observing System (GE-GLOSS) discussed the need for data archaeology of historic sea level records in order to possibly extend existing time series and/or gain access to observations which are not in digital form. Following on from this, a member of the GE-GLOSS attended the GODAR Review Conference in Silver Spring, Maryland in July 1999, and suggested that sea-level data also be included in the GODAR project. The GODAR sea level proposal is this. In many countries there are considerable amounts of historical sea level data in paper form such as charts or tabulations.  These need to be computerised (a) as a backup for data security, and (b) so that they can be subject to modern...
Tipo: Report
Palavras-chave: Oceanographic data; Archaeology; Sea level; Sea level; Data; Http://aims.fao.org/aos/agrovoc/c_34115; Http://aims.fao.org/aos/agrovoc/c_49816.
Ano: 2000
URL: http://hdl.handle.net/1834/1821

Propagación de la onda de marea en canales adyacentes a Campos de Hielo Sur
Provedor de dados: 20
Autores: Fierro, J.; Castillo, M.; Valenzuela, C.
During the research cruise Cimar-Fiordo 2, carried out in late 1996, sea level was recorded in three stations located in channels, Messier (Puerto Edén), Wide (Punta Beresford) and Concepción (Caleta Patria). The measurements were of short term, starting in October 20th  and finishing in December 13th, 1996. The sea level in those stations, was analyzed in the time and frequency dominion, and some tide non harmonic values were calculated. Results showed that tides evident influence in sea level signal, with a clear mixt semidiurnal behavior, and a daily inequality between high and low waters. The highest tide range was observed in puerto Edén, showing the effect of the local orography configuration while the wave propagates into the channel, and...
Tipo: Journal Contribution
Palavras-chave: Tides; Harmonic analysis; Spectral analysis; Sea level; Cruises; Sea level changes; Monitoring systems; Tidal dynamics; Tidal waves; Ice fields; Tides; Spectral analysis; Sea level; Http://aims.fao.org/aos/agrovoc/c_7764; Http://aims.fao.org/aos/agrovoc/c_28964; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2003
URL: http://hdl.handle.net/1834/1579

Respuesta del Nivel del Mar al Forzamiento Atmosférico en las Costasdel Golfo de México.
Provedor de dados: 20
Autores: Ramírez Stout, O.; Candela Pérez, J.
The subinertial response of sea level to meteorological forcing in the Gulf of Mexico is examined using observations of sea level, atmospheric pressure and surface wind covering the period 1985-1986. Spectral analysis and multiple regression in the frequency domain methods are employed for data processing. The analysis shows that the atmospheric pressure is the principal forcing agent. The response of sea level to atmospheric pressure is found to be non isostatic and dependent on frequency and geographical location; the response is overisostatic in the north zone and underisostatic in the south zone of the Gulf, approaching isostasy only at stations located in the Cuban coast. The importance of local and remote wind in sea level variability are determined;...
Tipo: Journal Contribution
Palavras-chave: Sea level; Sea level changes; Sea level; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2003
URL: http://hdl.handle.net/1834/3333

International Global Oceanographic Data Archaeology and Rescue (GODAR) Review Conference, Silver Spring, MD, USA 12-15 July 1999.
Provedor de dados: 20
The International Global Oceanographic Data Archaeology and Rescue (GODAR) Review Conference took place in Silver Spring, MD, USA from 12-15 July 1999. The Conference marked the end of the first phase of the GODAR project and was attended by more than 70 data managers and scientists. The Conference summed up the results of the first phase and provided guidance for future GODAR activities. Substantial amounts of additional historical data that still reside only in manuscript form have been identified by Member States as a result of the 6 regional GODAR meetings that have been held to date. The meeting concluded that the GODAR project should be continued and extended to possibly include additional variables such as sea level and ocean bathymetry.
Tipo: Report
Palavras-chave: Sea level; Ocean bathymetry.
Ano: 2003
URL: http://hdl.handle.net/1834/5674

Análisis del comportamiento de la salinidad (intrusión salina) en el sistema Río Guayas Canal de Jambelí como parte del cambio climático
Provedor de dados: 20
Autores: Arreaga Vargas, P.
El presente trabajo permite conocer el comportamiento de la cuña salina en el sistema Río Guayas - Canal de Jambelí, conociendo que el Río Guayas abastece de agua a Guayaquil, puerto principal del país, y a muchas otras poblaciones.
Tipo: Journal Contribution
Palavras-chave: Water quality; Sea level; Climatic changes; Salt-wedge estuaries; Salt wedges; Salinity gradients; Irrigation water; River water; Rivers; Water quality; Irrigation water; Rivers; Sea level; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_3958; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2000
URL: http://hdl.handle.net/1834/2274

Numerical Simulation of the Influence of Mean Sea Level Rise on Typhoon Storm Surge in the East China Sea.
Provedor de dados: 20
Autores: Gao, Zhigang; Han, Shuzong; Liu, Kexiu; Zhrng, Yunxia; Yu, Huaming.
In this paper, ECOMSED (Estuarine Coastal Ocean Model with sediment transport) model is employed to simulate storm surge process caused by typhoon passing across East China Sea in nearly years. Capability of ECOMSED to simulate storm surge is validated by comparing model result with observed data. Sensitivity experiments are designed to study the influence of sea level rise on typhoon storm surge. Numerical experiment shows that influence of mean sea level rise on typhoon storm surge is non-uniform spatially and changes as typhoon process differs. Maybe fixed boundary method would weaken the influence of mean sea level rise on storm surge, and free boundary method is suggested for the succeeding study.
Tipo: Journal Contribution
Palavras-chave: Simulation; Sea level.
Ano: 2008
URL: http://hdl.handle.net/1834/5878

Geomorphology of the Kenyan Coast: Not as a Result of Sea-Level Change Alone
Provedor de dados: 20
Autores: Abuodha, P.A.W.
The coastal setting and the geology control the geomorphology on the Kenyan coast. The evolution of the physical environment has also been influenced by climate, wave and tidal regime, sedimentation and river discharge. The shore terraces of Kenyan coast correspond to eustatic movements of sea level. There seems to be evidence of a high water level during the late Pleistocene. For the lower terraces a Holocene age is suggested. During the Pleistocene, sea level fluctuations associated with glacial / interglacial phases left well developed raised platforms and beaches. The Kenyan coast has a strong tectonic influence and it is difficult to describe the coast in terms of emergence or submergence only. It can therefore be concluded that the geomorphology of...
Tipo: Report
Palavras-chave: Geomorphology; Sea level.
Ano: 1993
URL: http://hdl.handle.net/1834/407

Influence of mesoscale atmospheric forcing on mean sea level at Piraquara, RJ
Provedor de dados: 20
Autores: Uaissone, A.J.R.
The work refers to variations of the mean sea level (MSL) in Piraquara (RJ) due to mesoscale atmospheric disturbances in the South and Southeast Brazil oceanic area. The sea level data were submitted to a verification and consistence process, and then they were  validated with the help of predicted levels by the software Pacmaré (FRANCO, 1992). For  the pressure and wind velocities, the NCEP re-analysis data was used. Thompson's low pass  optimizable filter was used to remove high frequencies in the data. Differently to the  habitual use of quarters of year in climatologic studies, in this work partitions of the year  centered in solstice and equinox were considered.  About the results of the statistical analysis in the time domain, it was seen that MSL...
Tipo: Theses and Dissertations
Palavras-chave: Sea level; Atmospheric disturbances; Dynamics.
Ano: 2004
URL: http://hdl.handle.net/1834/910

Coral Reef and High Sea Level at Luhuitou, Hainan Island during the Holocene.
Provedor de dados: 20
Autores: Huang, Deyin; Shi, Qi; Zhang, Yechun.
According to the field survey and 14C dating at Luhuitou, southern Hainan Island, a subsiding area, the authors conclude the high sea level history recorded by coral reef in the Holocene. At least 4 sea level high-stands can be identified from the distribution of coral reef ages: 7300 - 6000 cal.aBP, 4800 - 4700 cal.aBP, 4300 - 4200 cal.aBP and 3100 - 2900 cal.aBP. The highest sea level occurred around 7300 - 6700 cal.aBP, and biological-morphological zones took their shape during the stage. The later coral reefs developed in ponds, depressions, and developed outwards on both sides of Luhuitou peninsula. The modern coral reefs are developing in out reef flat and reef-front slope. Moreover, the time of high sea levels in the northern South China Sea...
Tipo: Journal Contribution
Palavras-chave: Coral reefs; Sea level; Holocene.
Ano: 2007
URL: http://hdl.handle.net/1834/5863

Some Considerations on the Variability of Sea Level Synoptic Component in the Gulf of Batabanó.
Provedor de dados: 20
Autores: Hernández González, M.; Díaz Llanes, G.
Abstract: An analysis of sea level synoptic variations in the Gulf of Batabanó is carried out starting from data of direct measurements. Spectral analysis is applied. It is corroborated with new elements the prevalence of meteorological variations in part of the southwestern shelf, and the spectral structure of this shelf is characterized. The influence of meteorological factors is evaluated. It is demonstrated the influence exerted by the southern component of the wind on this variations. There are signs of the possible influence of ENSO on sea level monthly variability at La Coloma; and there is a great similarity between this variability and that of Siboney.
Tipo: Journal Contribution
Palavras-chave: Sea level; Storm surges; Spectral analysis; Sea level; Spectral analysis; Http://aims.fao.org/aos/agrovoc/c_34115; Http://aims.fao.org/aos/agrovoc/c_28964.
Ano: 2003
URL: http://hdl.handle.net/1834/3337

Manual on sea level: Measurement and interpretation, Volume 4 - An update to 2006
Provedor de dados: 20
2. The Nature of Sea Level Variations 2.1 Introduction  2.2 Surface Waves 2.3 Seiches  2.4 Tides 2.4.1 Tidal Analysis  2.5 Storm surges 2.6 Tsunamis 2.7 Mean Sea Level and Trends  2.8 Estimation of Extreme Sea Levels  2.8.1 Introduction  2.8.2 The Annual Maximum Method (AMM) 2.8.3 The Joint Probabilities Method (JPM) 2.8.4 The Revised Joint Probabilities Method (RJPM) 2.8.5 The Exceedance Probabilities Method  2.8.6 Spatial Estimation of Extremes  3. Instruments for the Measurement of Sea Level  3.1 Introduction  3.1.1 The Choice of a Tide Gauge Site  3.2 The Stilling Well  3.2.1 Datum Switches  3.3. Pressure Gauges  3.3.1 Pneumatic Bubbler Gauges  3.3.2 Pressure Sensor Gauges  3.3.3 The Datum of a Pressure System  3.3.4 Multiple Pressure Transducer...
Tipo: Report
Palavras-chave: Sea level measurement; Measurement; Sea level.
Ano: 2006
URL: http://hdl.handle.net/1834/4459

Ondas atrapadas a la costa en el sector NW de Cuba.
Provedor de dados: 20
Autores: Ramírez Stout, O.; Hernández González, M.
Series cronológicas de nivel del mar obtenidas durante el año 2004 en tres estaciones mareaográficas ubicadas en la costa noroccidental de Cuba muestran en las frecuencias bajas, ω &lt; 0.2 ciclos por día (cpd), una propagación hacia el E con velocidad de fase de una onda baroclínica de Kelvin (2-3 m/s). La coherencia entre las localidades alcanza sus valores máximos en la banda de los 0.1-0.2 cpd. Estos resultados permiten verificar la existencia de ondas atrapadas a la costa en la zona de estudio.
Tipo: Journal Contribution
Palavras-chave: Sea level; Sea level; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2006
URL: http://hdl.handle.net/1834/3339

The Role of Sea-Level Rise in the Formation of Peatlands in Maputaland
Provedor de dados: 20
Autores: Grundling, P.L.
Peatlands act as information traps; archives reflecting changes in climate and environment, through pollen assemblages, sediment facies, plant fibre and C14 dating. The investigation of Maputaland peatlands presents an ideal opportunity to understand these changes during the Late Pleistocene and Holocene. The Maputaland peatlands in South Africa could be geographically divided into two distribution areas based on age: The Holocene age peatlands northwards of the Mkuze River inflow into Lake St. Lucia and the Late Pleistocene age peatlands south of this inflow. The grouping of peat thicknesses versus peat ages in a scatter diagram indicates distribution deviations from the ideal accumulation line. These might represent periods of low or negative growth and...
Tipo: Report
Palavras-chave: Peat; Sea level; Peatlands; Http://aims.fao.org/aos/agrovoc/c_13929.
Ano: 2004
URL: http://hdl.handle.net/1834/703

El Niño 2006-2007. Desarrollo y manifestaciones en aguas ecuatorianas
Provedor de dados: 20
Autores: Zambrano, E.
Se revisan las características generales de los eventos El Niño en el Pacífico Tropical y la manera como se manifiestan frente a las costas del Ecuador. Se analiza la elevación del nivel del mar en la estación de La Libertad y se compara con el contenido de calor en el Pacífico central. Utilizando la información de las boyas del programa TAO se analiza la propagación de temperatura y altura dinámica desde el Pacífico ecuatorial occidental hasta el borde oriental. De igual manera se analiza el arribo de ondas ecuatoriales al borde oriental del Pacífico y su incidencia en el nivel medio del mar. El Niño 2006-07 concluyó rápidamente y de intensidad débil; puede considerarse como en evento de corta duración que presentó las características generales de otros...
Tipo: Journal Contribution
Palavras-chave: El Nino phenomena; Sea level; Buoys; Rain; Edge waves; Equatorial waves; Temperature; Sea level; Rain; Temperature.
Ano: 2007
URL: http://hdl.handle.net/1834/2337

Caracterización del régimen de mareas y corrientes a lo largo del canal Moraleda (43° 54' S - 45° 17' S)
Provedor de dados: 20
Autores: Fierro, J.; Bravo, M.; Castillo, M.
Sea level and currents in “Boca del Guafo” and Moraleda channel are studied using statististical and Fourier (harmonic) analyses. The data were collected using oceanographic instruments that covered a wide geographical area, from the northern most point of Moraleda channel to Darwin channel. The results of the harmonic analysis indicated that the area has a semidiurnal tide with a 12-minute phase shift between the ports of Melinka and Lagunas. This result shows that the tidal wave does not only propagate along the Moraleda channel, but at the same time enters the region through several transversal channels that connect the Pacific Ocean with the Moraleda channel. Along the main channel (Moraleda) no reverse current was recorded, which is an unusual...
Tipo: Journal Contribution
Palavras-chave: Tides; Ocean currents; Channels; Current velocity; Sea level; Tides; Ocean currents; Sea level; Http://aims.fao.org/aos/agrovoc/c_7764; Http://aims.fao.org/aos/agrovoc/c_12883; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2000
URL: http://hdl.handle.net/1834/1577

A General formatting system for geo-referenced data. vol. 3: Standard subsets of GF3
Provedor de dados: 20
Tipo: Book
Palavras-chave: Oceanography; Geophysical data; Sea level; Sea level measurement; Wave analysis; Wave data; Wave height; Wave measurement; Sea surface; Drifting data buoys; Bathymetric data; Bathymetry; Mean sea level; Sea level; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 1996
URL: http://hdl.handle.net/1834/2798

Some ecological factors affecting coral reef assemblages off Hurghada, Red Sea, Egypt
Provedor de dados: 20
Autores: Mohamed, T.A.A.; Mohamed, A.M.
Three shallow reef sites were investigated during four seasons Autumn, 2003, Winter, Spring and Summer, 2004) off the Marine Biological Station at Hurghada, Red Sea, Egypt. Thirty-eight scleractinian coral species were recorded at the studied sites. Generally, Twenty-six species were affected by more than one factor (such as high temperature, solar radiation, sedimentation and algae), while the last twelve species remained healthy. The affected species (26 species) were divided into the following: five species were affected by combination of high temperature and direct exposure to solar radiation during the neap tide, eleven species only were affected by sedimentation and increasing algal cover and ten species were affected by high temperature, solar...
Tipo: Journal Contribution
Palavras-chave: Coral bleaching; Agal cover; Solar Radiation; Sea level; Sedimentation; Red Sea Sediments Coral reefs Ecology.
Ano: 2005
URL: http://hdl.handle.net/1834/1302

IGOSS Plan and Implementation Programme, 1996-2003
Provedor de dados: 20
Autores: IOC.
Tipo: Book
Palavras-chave: Oceanography; Sea level; Wave data; Data acquisition; Data converters; Data transmission; Buoys; Data collections; Data processing; Sea level; Data acquisition; Data processing; Http://aims.fao.org/aos/agrovoc/c_34115; Http://aims.fao.org/aos/agrovoc/c_37344; Http://aims.fao.org/aos/agrovoc/c_10289.
Ano: 1996
URL: http://hdl.handle.net/1834/2811

Volume 2, manual on sea level measurement and interpretation, emerging technologies
Provedor de dados: 20
Autores: UNESCO-IOC.
Supported by IOC for UNESCO.
Tipo: Report
Palavras-chave: Sea level; Measurement.
Ano: 1994
URL: http://hdl.handle.net/1834/4443

Tide analysis In The Red Sea; In Gizan and Port Sudan
Provedor de dados: 20
Autores: Eltaib,  Elfatih.
Tide gauge measurements recorded at two stations in the Red Sea, at Port Sudan from 1986 - 1994 and at Gizan for the period of 1992 - 1994 are used to analyze the sea level changes and tide along the east and west coast of the Red Sea, using the harmonic analysis (t tide). Meteorological parameters during the same period are used to study the response of the sea level and residual sea level to local and global forcing. The relation between sea level and forces are examined using the correlation and cross covariance analysis. The correlation and cross-covariance coe cients between sea level and sea level pressure at Port Sudan indicate that the sea level responds to atmospheric pressure as non-inverse barometer. The linear trend for the coastal area shows a...
Tipo: Theses and Dissertations
Palavras-chave: Tide gauges; Atmospheric pressure; Wind; Sea level; Tides; Meteorological observations.
Ano: 2010
URL: http://hdl.handle.net/1834/4548

El tsunami de Chile 27-02-2010 y su comportamiento en las zonas: Costera e insular del Ecuador
Provedor de dados: 20
Autores: Moreano, H.; Arreaga, P.; Nath, J.
La disponibilidad de mareogramas de varios puertos de la costa continental del Ecuador y Galápagos, hizo posible realizar su análisis y entender el comportamiento del tsunami del 27 de febrero de 2010 en la costa nacional y en el archipiélago. En general los mareógrafos de la zona costera reciben la cresta de la primera onda minutos después de la hora pronosticada para la bajamar, cerca de las 08H30R (hora local) de la mañana del día sábado 27, registrándose por lo menos tres ondas de amplitudes que variaron entre 20 y 70 cm. y períodos que alcanzaron las 2 horas para posteriormente registrar anormalidades con amplitudes y períodos mucho menores respondiendo probablemente a las características propias de cada puerto. En la caleta Aeolian de la Isla Baltra...
Tipo: Journal Contribution
Palavras-chave: Tsunamis; Tidal  waves; Sea level.
Ano: 2012
URL: http://hdl.handle.net/1834/4654

Volume 1, manual on sea level measurement and interpretation
Provedor de dados: 20
Supported by IOC for UNESCO.
Tipo: Report
Palavras-chave: Sea level; Measurement.
Ano: 1985
URL: http://hdl.handle.net/1834/4441

Vulnérabilité de la Côte Togolaise a l'élevation du niveau marin : une analyse de prevision et d'impact
Provedor de dados: 20
Autores: Blivi, A.B.
Une revue des sites côtiers où un recul actuel di rivage est observé sur les côtes sableuses enl Afrique de l'Ouest et du Centre montre que  ce processus dynamique résulte en général de l'action humaine. II n'est pas lié  à la transgression .... corrélative l'effet de serre. En Afrique de l'Ouest et du Centre, plusiers études ont porté sur les variations du niveau marin mettant en  évidence d'ianciennes plages avec des ...-rock. L'analyse statistique des données marégraphiques disponibles, quoique relativement lirnitécs, des stations littorales d'Abidjan, de Takoradi et de Téma, de différentes durées, montre, a partir des données de Takoradi, des tendances variables. La hausse du niveau marin le long des côtes du golfe du Bénin pourrait atteindre 30cm en...
Tipo: Book Section
Palavras-chave: Coastal zone; Collisions; Sea level; Sea level; Http://aims.fao.org/aos/agrovoc/c_34115.
Ano: 2001
URL: http://hdl.handle.net/1834/1181

Upper Pleistocene deposits of the Comprida Island (São Paulo State) dated by thermoluminescence method
Provedor de dados: 42
Autores: SUGUIO,KENITIRO; TATUMI,SONIA H.; KOWATA,EMÍLIA A.; MUNITA,CASIMIRO S.; PAIVA,ROSEMEIRE P.
The Cananéia (Upper Pleistocene) and the Comprida Island (Holocene) formations, outcropping in the Comprida island (SP) have been mapped using geomorphological and lithological criteria. Only one sample of the Cananéia Formation, collected in the homonymous island in front of the Comprida Island, was beyond the limit of the standard radiocarbon method. But since the publication of the geological map of the area in 1978, there has been some doubt on the real occurrence of Pleistocene deposits in southern extremity of Comprida Island. This paper deals with the results of thermoluminescence (TL) ages of eight samples from Comprida Island, which corroborate the Pleistocene age assumed during mapping surveys of these deposits. On the other hand, possible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thermoluminescence ages; Pleistocene; Sea level; São Paulo State.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000100010