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Registros recuperados: 6
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Glacial-to-Holocene evolution of sea surface temperature and surface circulation in the subarctic northwest Pacific and the Western Bering Sea ArchiMer
Meyer, Vera D.; Max, Lars; Hefter, Jens; Tiedemann, Ralf; Mollenhauer, Gesine.
It has been proposed that North Pacific sea surface temperature (SST) evolution was intimately linked to North Atlantic climate oscillations during the last glacial-interglacial transition. However, during the early deglaciation and the Last Glacial Maximum, the SST development in the subarctic northwest Pacific and the Bering Sea is poorly constrained as most existing deglacial SST records are based on alkenone paleothermometry, which is limited prior to 15ka B.P. in the subarctic North Pacific realm. By applying the TEX86L temperature proxy we obtain glacial-Holocene-SST records for the marginal northwest Pacific and the Western Bering Sea. Our TEX86L-based records and existing alkenone data suggest that during the past 15.5ka, SSTs in the northwest...
Tipo: Text Palavras-chave: TEX86L; Surface circulation; Northwest Pacific; Bering Sea; Deglaciation.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00421/53231/54786.pdf
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Mediterranean intermediate circulation estimated from Argo data in 2003-2010 ArchiMer
Menna, M.; Poulain, P. M..
Data from 38 Argo profiling floats are used to describe the intermediate Mediterranean currents for the period October 2003-January 2010. These floats were programmed to execute 5-day cycles, to drift at a neutral parking depth of 350 m and measure temperature and salinity profiles from either 700 or 2000 m up to the surface. At the end of each cycle the floats remained at the sea surface for about 6 h, enough time to be localised and transmit the data to the Argos satellite system. The Argos positions were used to determine the float surface and intermediate displacements. At the surface, the float motion was approximated by a linear displacement and inertial motion. Intermediate velocities estimates were used to investigate the Mediterranean circulation...
Tipo: Text Palavras-chave: Surface circulation; Tyrrhenian sea; North atlantic; Variability; Deep; Currents; Floats; Features; Strait; Waters.
Ano: 2010 URL: https://archimer.ifremer.fr/doc/00204/31477/29894.pdf
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Estudio de corrientes marinas en la Bahía Chile (Bahía Discovery) OceanDocs
Medina, F..
Velocidades superficiales de las aguas fueron medidas en la Bahía chile en la Isla Greenwich, como parte de la Segunda Expedición Ecuatoriana a la Antártida, durante el verano del hemisferio sur, en 1990. Masas de hielo a la deriva desprendidas desde la costa fueron usadas como trazadores lagrangianos. Son comparadas corrientes superficiales y observaciones de vientos. La circulación superficial es determinada por los vientos cuando la velocidad de estos últimos exceden los 6 m/s. Los valores máximos y la dirección de la deriva superficial dependen exclusivamente del campo de viento prevaleciente. La velocidad de la corriente puede alcanzar valores de hasta 40 cm/s.
Tipo: Journal Contribution Palavras-chave: Surface water; Ice drift; Surface currents; Surface drifters; Polar waters; Surface circulation; Surface water.
Ano: 1990 URL: http://hdl.handle.net/1834/3727
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Estudio de la circulación costera frente al puerto de La Libertad (Ecuador) utilizando flotadores OceanDocs
Allauca, S.; Lucero, M..
Aplicando el método de Lagrange para medición de corrientes, se realizó un estudio de la Circulación Costera frente al Puerto de La Libertad, para cuyo efecto se utilizaron flotadores tipo veletas superficiales. Las observaciones fueron realizadas desde el 23 de Julio hasta el 5 de Agosto de 1988, incluyendo marea en estado de Sicigia y Cuadratura. De estas observaciones se encontró que la tendencia general del flujo es de dirigirse hacia el este, con ciertos cambios en su dirección durante la sicigia, fase donde el régimen de mareas se presenta en forma muy influyente sobre la circulación. Por otro lado, los vientos y la topografía del fondo tienen menor influencia sobre la circulación. Se observó además que las corrientes superficiales son ligeramente...
Tipo: Journal Contribution Palavras-chave: Flow measurement; Lagrangian current measurement; Coastal currents; Surface circulation.
Ano: 1992 URL: http://hdl.handle.net/1834/2187
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Distribution of planktonic cnidarian assemblages in the southern Gulf of Mexico, during autumn RChHN
Martell-Hernandez,Luis F; Sanchez-Ramirez,Marina; Ocaña-Luna,Alberto.
BACKGROUND: Despite their ecological, economic and medical relevance, very little information is available on the distribution of planktonic cnidarians, this being particularly true for some regions of the ocean such as the Gulf of Mexico. In fact, the effect of locally important oceanographic features such as the offshore autumnal transport on the distribution of planktonic cnidarians has long been overlooked in this region. Because of this, the present study aimed to analyse the spatial patterns of planktonic cnidarian assemblages in the southern Gulf of Mexico during the autumn of 1998, when particularly intense conditions of convergence, offshore water transportation and productivity were recorded. The assemblages were described in terms of their...
Tipo: Journal article Palavras-chave: Campeche Bay; Gelatinous zooplankton; Medusae; Siphonophores; Surface circulation.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2014000100028
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Surface circulation patterns above the coastal shelf between El Uno bay and Las Vacas spit, Gulf of Urabá, Colombian Caribbean Boletín de Investigaciones
Hernández Morales,Dannys Paola; Romaña Torres,Yorlenys; Jaramillo-Vélez,Alfredo; Pelegrí,Josep L.; Toro,Vladimir G..
ABSTRACT Good knowledge of the coastal circulation patterns is essential for a proper management of the coastline, especially in areas with a high anthropic pressure. In order to determine the main characteristics of the coastal currents in the Gulf of Urabá, the seasonal patterns of surface circulation were measured and analyzed during times of high and low rainfall along 6 km of coastline, between the Punta de Las Vacas and Punta Yarumal coastal spit systems, in the municipality of Turbo, Antioquia. These measurements were made with surface drifters, which were launched at different tide stages and tracked for time periods based on the semi-diurnal cycle. The in-situ measurements were analyzed alongside tide and wind data from a climatic station located...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Surface circulation; Wind; Tide; Drifters; Coastal currents..
Ano: 2021 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000200009
Registros recuperados: 6
Primeira ... 1 ... Última
 

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