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DIGITAL.CSIC
Conference object . 2012 . Peer-reviewed
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Transporte de sedimento en múltiples etapas en el Cañón submarino de Cap de Creus y el talud abierto adyacente

Authors: Palanques, Albert; Puig, Pere; Durrieu de Madron, Xavier; Sánchez-Vidal, Anna; Pasqual, Catalina; Martín, Jacobo; Calafat, Antoni; +2 Authors

Transporte de sedimento en múltiples etapas en el Cañón submarino de Cap de Creus y el talud abierto adyacente

Abstract

[ES] En invierno de 2006 se fondearon seis anclajes instrumentados entre 300 y 1900 m de profundidad a lo largo del Cañón del Cap de Creus y en el talud continental adyacente para estudiar el transporte de sedimento a través del extremo SO del margen continental del Golfo de León. En la cabecera del cañón, se observaron eventos de transporte de sedimentos desde la plataforma por cascading sólo a principios de enero, debido a la mayor disponibilidad de sedimentos después de la estación cálida más calmada, y a finales de enero, debido a la interacción del cascading con una fuerte tormenta del E-SE. Cañón abajo, se registraron pulsos de cascading profundo a principios y finales de enero y de marzo a abril. Durante estos pulsos, el transporte de sedimento aumentó principalmente a partir de 1000 m de profundidad, indicando la resuspensión y transporte desde la parte superior-media del cañón de sedimentos depositados por pulsos más someros. A partir de 1000 m de profundidad, el sedimento salió del cañón y fluyó contorneando el talud meridional. A más profundidad, las corrientes de fondo generadas por procesos de convección de mar abierto resuspendieron y redistribuyeron el sedimento que llegaba al ascenso continental.

[EN] Six mooring lines deployed between 300 and 1900 m depth along the Cap de Creus canyon and in the adjacent southern open slope in winter 2006 to study sediment transport in the southwestern Gulf of Lions continental margin. On the canyon head, shelf-canyon sediment transport events by cascading only occurred in early January because of higher sediment availability on the shelf after the warm and more calmed season, and in late January because of the interaction of dense shelf water cascading with a strong E-SE storm. Deep-reaching cascading pulses occurred in early January, late January and from early March to April. During these pulses, sediment transport increased mainly from 1000 m depth, indicating resuspension and transport of sediments previously deposited at upper and mid-canyon depths by moderate cascading pulses. Deeper than 1000 m depth, most of the sediment left the canyon and flowed contouring along the southern slope. Deeper, bottom currents generated by open sea convection resuspended and redistributed the sediment reaching the continental rise.

VIII Congreso Geológico de España (Oviedo, 2012).-- 4 pages, 4 figures.

Peer reviewed

Country
Spain
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Keywords

Deep slope, Talud profundo, Cascading de agua densa de plataforma, Gulf of Lions, Cañón submarino, Sediment transport, Golfo de León, Transporte de sedimento, Dense shelf water cascading, Submarine canyon

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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