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A General formatting system for geo-referenced data. vol. 3: Standard subsets of GF3 OceanDocs
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
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Manual on Sea Level Measurement and Interpretation OceanDocs
This manual is concerned primarily with techniques for the measurement of what are called relative sea level changes which means changes relative to the level of the land upon which the measuring instrument (the tide gauge) is located. The subject of changes in the level of land itself is reviewed later in this document but is given more detailed presentation in other reports to which we refer. The manual also concerns itself primarily with the part of the frequency spectrum of sea level change from minutes through to centuries by means of in situ devices at the coast (tide gauges). Such changes are sometimes called still water level changes, being changes over a period long enough to average over wind waves. The devices employed to make these measurements...
Tipo: Book Palavras-chave: Oceanography; Sea level measurement; Sea level changes; Tide gauges; Acoustic data; Acoustic transducers; Acoustic current meters; Transducers.
Ano: 2002 URL: http://hdl.handle.net/1834/2685
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Manual on sea level: Measurement and interpretation, Volume 4 - An update to 2006 OceanDocs
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
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Performance of modern tide gauges: towards mm-level accuracy ArchiMer
Martin Miguez, Belen; Testut, Laurent; Woeppelmann, Guy.
Considerable efforts are being made worldwide to upgrade tide gauge networks using new technologies. Because of the unique location of the Kerguelen Islands, the measurement of sea level there has received particular attention, with up to four systems equipped with modern sensors functioning simultaneously (two pressure tide gauges, a radar tide gauge, and a GPS-equipped buoy). We analysed and compared the sea level data obtained with these systems from 2003 to 2010, together with a time series of tide pole observations. This is the first time that a multi-comparison study with tide gauges has been undertaken over such a long time span and that the stability of modern radar tide gauges has been examined. The multi-comparison enabled us to evaluate the...
Tipo: Text Palavras-chave: Radar; Pressure gauges; Sea level changes; Sea level measurement; Tide gauges; Kerguelen Islands; GPS buoy.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00140/25137/23247.pdf
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Prospects for Future Satellite Estimation of Small-Scale Variability of Ocean Surface Velocity and Vorticity ArchiMer
Chelton, Dudley B.; Schlax, Michael G.; Samelson, Roger M.; Thomas Farrar, J.; Jeroen Molemaker, M.; Mcwilliams, James C.; Gula, Jonathan.
Recent technological developments have resulted in two techniques for estimating surface velocity with higher resolution than can be achieved from presently available nadir altimeter data: 1) Geostrophically computed estimates from high-resolution SSH measured interferometrically by the wide-swath altimeter on the Surface Water and Ocean Topography (SWOT) Mission with a planned launch in 2021; and 2) Measurements of ocean surface velocity from a Doppler scatterometer mission that is in the early planning stages, referred to here as a Winds and Currents Mission (WaCM). In this study, we conduct an analysis of the effects of uncorrelated measurement errors and sampling errors on the errors of the measured and derived variables of interest (SSH and...
Tipo: Text Palavras-chave: Satellite oceanography; Wide-swath altimetry; Doppler scatterometry; Submesoscale variability; Mesoscale variability; Sea level measurement; Surface current measurement; Relative vorticity; Geostrophic approximation.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00461/57290/59365.pdf
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Sea Level Measurement And Analysis In The Western Indian Ocean. National Report : Mozambique OceanDocs
Hoguane, A.M..
Tipo: Report Palavras-chave: Sea level measurement.
Ano: 1999 URL: http://hdl.handle.net/1834/909
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Sea Level Measurement And Analysis in the Western Indian Ocean. National Report. Seychellen. OceanDocs
Desnousse, M.; Agricole, W.; Chang-Ko, L..
Located just south of the Equator, the Seychelles archipelago is made up of 115 islands scattered over an Exclusive Economic Zone covering an area of 1,374,000 square kilometers, situated to the west of the Indian Ocean between 4 and 9 degrees south of the equator. The total land area is 455 square kilometers (45,250 hectares). Forty-one of the islands are granitic and are all found within a radius of 50 kilometers from the main granitic island. With a land area of 148 square kilometers, Mahe, the main island and seat of the government, constitutes about one-third of the total land area. The remaining 74 islands are coralline, Aldabra being the furthest located 1150 kilometers to the south-west (Figure 1). The country has a unique environment hardly seen...
Tipo: Report Palavras-chave: Sea level measurement.
Ano: 1999 URL: http://hdl.handle.net/1834/339
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Sea Level Measurement And Analysis In The Western Indian Ocean: National Report. Tanzania OceanDocs
Mahongo, S.B..
During the fourth session of the Intergovernmental Oceanographic Commission's Regional Committee for the Co-operative Investigations in the North and Central Western Indian Ocean (IOCINCWIO) held in Mombasa, Kenya in May 1997, a project proposal entitled "Sea Level data and Information in the IOCINCWIO region" was submitted and endorsed. Subsequently the Kenya Marine & Fisheries Research Institute (KMFRI) and the Institute of Marine Sciences of the University of Dar es Salaam, Tanzania prepared a detailed proposal which was approved for funding by IOC within the framework of the IOC-Sida-Flanders Marine Science programme.
Tipo: Report Palavras-chave: Sea level measurement.
Ano: 1999 URL: http://hdl.handle.net/1834/353
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Sea Level Measurement And Analysis in the Western Indian Ocean. National Reports. Comores, French Indian Ocean Islands & Somalia OceanDocs
During the fourth session of the Intergovernmental Oceanographic Commission's RegionalCommittee for the Co-operative Investigations in the North and Central Western IndianOcean (IOCINCWIO) held in Mombasa, Kenya in May 1997, a project proposal entitled "Sea Level data and Information in the IOCINCWIO region" was submitted and endorsed.Subsequently the Kenya Marine & Fisheries Research Institute (KMFRl) and the Instituteof Marine Sciences of the University of Dar es Salaam, Tanzania prepared a detailed proposal which was approved for funding by IOC within the framework of the IOC-Sida-Flanders Marine Science programme.
Tipo: Report Palavras-chave: Sea level measurement.
Ano: 1999 URL: http://hdl.handle.net/1834/993
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Sea Level Measurement And Analysis In The Western: Indian Ocean: National Reports: Madagascar OceanDocs
Razakafoniaina, N.T..
During the fourth session of the Intergovernmental Oceanographic Commission’s Regional Committee for the Co-operative Investigations in the North and Central Western Indian Ocean (IOCINCWIO) held in Mombasa, Kenya in May 1997, a project proposal entitled “Sea Level data and Information in the IOCINCWIO region” was submitted and endorsed. Subsequently the Kenya Marine & Fisheries Research Institute (KMFRI) and the Institute of Marine Sciences of the University of Dar es Salaam, Tanzania prepared a detailed proposal which was approved for funding by IOC within the framework of the IOC-Sida-Flanders Marine Science programme.
Tipo: Report Palavras-chave: Sea level measurement.
Ano: 1999 URL: http://hdl.handle.net/1834/346
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Sea Level Measurement And Analysis in the Western Indian Ocean: National Reports: South Africa OceanDocs
Waldron, H..
South Africa occupies 1 219 080 square kilometres at the southernmost tip of the Africancontinent, stretching from the Limpopo River in the North to Cape Agulhas in the South. Onthe west coast border is the South Atlantic Ocean, while the eastern coastline runs along theIndian Ocean. In the north, South Africa borders Namibia, Botswana and Zimbabwe, whileMozambique and Swaziland border on the North-East. South Africa has a total population (as at 27 April 1994, according to the Central StatisticalService (CSS)) of approximately 40 284 640. (Regional population figures quoted in thisdocument are also based on CSS figures).
Tipo: Report Palavras-chave: Sea level measurement.
Ano: 1999 URL: http://hdl.handle.net/1834/340
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Sea level monitoring in Mozambique OceanDocs
Nhampulo, C.I.S.; Ruby, J..
Observing changes in the rise of relative sea level has resulted from the balance between the sea level rise due to the global warming of the planet, and the vertical displacements of the coast due to geological movements. The main objective of this paper is to outsource information about sea level monitoring in Mozambique, as part of a common global effort aiming to colect and analyse data that can help in understanding physical processes envolving ocean basins or oceans as a hole. Tidal stations at Maputo (lat. 25º 58.5’ S, lon. 32º 34.2’ E), Beira (lat.19º 49.4’ S, lon. 34º 50.0’ E), Quelimane (lat. 18º 00.3’ S lon. 36º 58.2’ E), Nacala (lat. 14º 27.8’ S, lon. 40º 40.8’ E), Inhambane (lat. 23º 52.0’ S, lon.35º 22.6’ E) Pemba (lat. 12º 58.0’ S, long. 40º...
Tipo: Journal Contribution Palavras-chave: Mozambique; Sea level measurement.
Ano: 2002 URL: http://hdl.handle.net/1834/191
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Time series of ocean measurements. Volume 2 - 1984 OceanDocs
Tipo: Book Palavras-chave: Oceanography; Oceanographic data; Oceanography; Oceanographic surveys; Time series analysis; Sea level measurement; Sea level changes; Seasonal variations; Time series analysis; Oceanography; Http://aims.fao.org/aos/agrovoc/c_28778; Http://aims.fao.org/aos/agrovoc/c_12889.
Ano: 1985 URL: http://hdl.handle.net/1834/2737
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Una revisión de las mediciones del nivel del mar en las islas del Pacífico Tropical OceanDocs
Hayes, S.P..
Observaciones de bajas frecuencias (períodos más largos que los de marea) del nivel del mar en las islas, han probado ser una herramienta poderosa para el estudio de las variaciones de las corrientes en el Pacífico Tropical. Muchos de los trabajos iniciados en la interpretación de estos datos ha sido efectuado por Wyrtki (1974 a,b) quien usó los cambios del nivel del mar para inferir variaciones estacionales e interanuales en el transporte de las corrientes zonales. En frecuencia más altas, Groves and Miyata (1967) observaron picos espectrales en el registro del nivel del mar lo cual subsecuentemente ha sido interpretado como evidencia de ondas ecuatoriales atrapadas (Wunsch y Gill, 1976). En este manuscrito se revisa la interpretación de las mediciones...
Tipo: Journal Contribution Palavras-chave: Sea level measurement.
Ano: 1980 URL: http://hdl.handle.net/1834/2118
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