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| Registros recuperados: 18 | |
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| ABSTRACT Coastal lagoons are a focus of primary production and a refuge for biodiversity due to their relative confinement and low depth. La Escollera is a human-made coastal lagoon in El Rodadero, Santa Marta (Colombian Caribbean), excavated in the early 1980s to hold a marina and its fringes planted with mangroves. To generate a baseline of physical variables that contribute to the nderstanding of water circulation and its influence on ecosystem attributes, salinity, temperature, sea level and light penetration data are outinely obtained through electronic recorders and handheld sensors. Salinity and temperature data from January 2017 to February 2018 ollowed the seasonal pattern of the open sea in the Santa Marta area, alternating between lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal lagoons; Marinas; Tides; Salinity; Temperatur. |
| Ano: 2020 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612020000200025 |
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| Gomes,José Diego; Abrunhosa,Fernando Araújo; Simith,Darlan de Jesus de Brito; Asp,Nils Edvin. |
| At the coastal zone sediments, water and organisms interact intensely. At equatorial tidal-dominated coast mangroves are abundant. These areas are well-known for their ecological importance. Considering the mangroves of Atlantic South America, the mangrove crab, Ucides cordatus has ecological and economic prominence. High densities of this crab are found on the Amazon coast. This study investigates the sediment distribution of the Bragança mangrove area (Amazon coast, Brazil) and its correlations with vegetation and mangrove crab distribution. Sediments of 47 sites, as well as crabs from sites with different sediment and vegetation, were sampled. Results show that surface sediment of the area is mainly composed by silt (59%), with 21% sand and 20% clay.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal plain; Sediment distribution; Tides; Vegetation; North Brazil; Mangrove crab. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400010 |
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| Le Goff, C; Mironov, As; Boussidi, B; Bordois, L; Dumas, F; Chapron, Bertrand. |
| Our understanding of ocean circulation to date still bears many unanswered questions. Despite the development of a variety of methods for observing upper ocean current velocity at different scales, our knowledge of this subject has yet to be significantly improved. Historically, the drift of vessels led to the discovery of the oceanic surface current. The Automatic Identification System (AIS), originally intended to avoid collision in maritime traffic, contains the necessary information to retrieve vessel drift due to the surface current. Thus, the AIS data can be processed to derive sea-surface current components for any region in which there is maritime traffic. A dedicated inversion scheme has recently been theoretically formulated and implemented. In... |
| Tipo: Text |
Palavras-chave: AIS; Oceanic Surface Current; Drift speed; Tides. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00693/80508/83719.pdf |
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| 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 |
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| CAVARIATO, Ernesto Casimiro; MUALEQUE, Daniel Oliveira. |
| The present study aims, analyze the influence of the tide on the engraulids catches in fishing of beach-seine in Angoche, northern Mozambique. Data sampling of this fishery in Angoche district from 2004 to 2009 available in the database, Pescart for that district were used. The catch data (Kg) and catch rates (CPUE) were processed in the database and organized by type of tide (alive and dead). The proportions (weight) of the species composition and average size of species caught were compared by tide type tide. T-Test was used to check whether there are differences in CPUE's and medium sizes depending on the tides of three species, Thryssa vitrirostris, Sillago sihama and Sardinella albella. Results show that there are significant differences in catch... |
| Tipo: Journal Contribution |
Palavras-chave: Beach seines; Ichthyofauna; Tides. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5298 |
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| Lemieux, Jean-francois; Lei, Ji; Dupont, Frederic; Roy, Francois; Losch, Martin; Lique, Camille; Laliberte, Frederic. |
| The impact of tides on the simulated landfast ice cover is investigated. Pan‐Arctic simulations are conducted with an ice‐ocean (CICE‐NEMO) model with a modified rheology and a grounding scheme. The reference experiment (without tides) indicates there is an overestimation of the extent of landfast ice in regions of strong tides such as the Gulf of Boothia, Prince Regent Inlet and Lancaster Sound. The addition of tides in the simulation clearly leads to a decrease of the extent of landfast ice in some tidally active regions. This numerical experiment with tides is more in line with observations of landfast ice in all the regions studied. Thermodynamics and changes in grounding cannot explain the lower landfast ice area when tidal forcing is included. We... |
| Tipo: Text |
Palavras-chave: Landfast ice; Tides; Ice-ocean model. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00460/57132/59053.pdf |
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| LESSA,GUILHERME C.; DOMINGUEZ,JOSÉ M. L.; BITTENCOURT,ABÍLIO C.S.P.; BRICHTA,ARNO. |
| The Todos os Santos Bay, located on northeastern Brazil, is the second largest coastal bay in the country, after São Marcos Bay. The three main drainage basins convey an average of 120 m³/s of freshwater towards the bay, the majority of it, however, held by a dam in Paraguaçu River since 1985. The original average freshwater inflow was two orders of magnitude smaller than the estimated tidal discharge through the main bay entrance, and the oceanographic characteristics of the bay, as indicated by bay salinity measurements, are clearly marine. The tides are semi-diurnal, and are amplified up the bay by a factor of 1.5. Shallow water constituents become more important as the tide propagates along Paraguaçu Channel and Paraguaçu River, where they generate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tides; Baía de Todos os Santos; Tidal currents. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000200009 |
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| Cai, Sq; Huang, Qz; Long, Xm. |
| A three-dimensional baroclinic shelf sea model is employed to simulate the tidal and non-tidal residual current in the South China Sea. The four most significant constituents, M-2, S-2, K-1 and O-1, are included in the experiments with tidal effect. At most stations, the computed harmonic constants agree well with the observed ones. The circulations of the South China Sea in summer (August) and winter (December) are mainly discussed. It is shown that the barotropic tidal residual current is too weak to affect the South China Sea circulation, whilst the contribution of the baroclinic tidal residual current to the South China Sea circulation would be important in the continental shelf sea areas, especially in the Gulf of Thailand and Gulf of Tonkin. In the... |
| Tipo: Text |
Palavras-chave: Marée; Courant résiduel; Modèle numérique; Mer de Chine du Sud; Tides; Tidal current; Residual current; Numerical model; South China Sea. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00321/43251/42982.pdf |
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| Contreras Ruiz Esparza, Adolfo; Douillet, Pascal; Zavala-hidalgo, Jorge. |
| The tidal circulation patterns in the Terminos Lagoon were studied based on the analysis of 1 year of measurements and numerical simulations using a baroclinic 3D hydrodynamic model, the MARS3D. A gauging network was installed consisting of six self-recording pressure-temperature sensors, a tide gauge station and two current profilers, with pressure and temperature sensors moored in the main lagoon inlets. Model simulations were validated against current and sea level observations and were used to analyse the circulation patterns caused by the tidal forcing. The numerical model was forced with eight harmonic components, four diurnal (K (1), O (1), P (1), Q (1)) and four semi-diurnal (M (2), S (2), N (2), K (2)), extracted from the TPX0.7 database. The... |
| Tipo: Text |
Palavras-chave: Tides; Residual currents; Terminos Lagoon; Ebb dominated; Harmonic components. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00297/40838/40010.pdf |
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| 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 |
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| Registros recuperados: 18 | |
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