dot
Detailansicht
Katalogkarte GBA
Katalogkarte ISBD
Suche präzisieren
Drucken
Download RIS
Hier klicken, um den Treffer aus der Auswahl zu entfernen
Titel Malvinas-slope water intrusions on the northern Patagonia continental shelf
VerfasserIn A. R. Piola, N. Martínez Avellaneda, R. A. Guerrero, F. P. Jardón, E. D. Palma, S. I. Romero
Medientyp Artikel
Sprache Englisch
ISSN 1812-0784
Digitales Dokument URL
Erschienen In: Ocean Science ; 6, no. 1 ; Nr. 6, no. 1 (2010-03-08), S.345-359
Datensatznummer 250003364
Publikation (Nr.) Volltext-Dokument vorhandencopernicus.org/os-6-345-2010.pdf
 
Zusammenfassung
The Patagonia continental shelf located off southeastern South America is bounded offshore by the Malvinas Current, which extends northward from northern Drake Passage (~55° S) to nearly 38° S. The transition between relatively warm-fresh shelf waters and Subantarctic Waters from the western boundary current is characterized by a thermohaline front extending nearly 2500 km. We use satellite derived sea surface temperature, and chlorophyll-a data combined with hydrographic and surface drifter data to document the intrusions of slope waters onto the continental shelf near 41° S. These intrusions create vertically coherent localized negative temperature and positive salinity anomalies extending onshore about 150 km from the shelf break. The region is associated with a center of action of the first mode of non-seasonal sea surface temperature variability and also relatively high chlorophyll-a variability, suggesting that the intrusions are important in promoting the local development of phytoplankton. The generation of slope water penetrations at this location may be triggered by the inshore excursion of the 100 m isobath, which appears to steer the Malvinas Current waters over the outer shelf.
 
Teil von