Malvinas-slope water intrusions on the northern Patagonia continental shelf

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The Patagonia continental shelf located off southeastern South America is bounded offshore by the Malvinas Current, which extends northward from northern Drake Passage (∼55deg; S) to nearly 38deg; S. The transition between relatively warm-fresh shelf waters and Subantarctic Waters from the western b...

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Autores principales:	Piola, A.R., Martínez Avellaneda, N., Guerrero, R.A., Jardón, F.P., Palma, E.D., Romero, S.I.
Formato:	JOUR
Materias:	chlorophyll a continental shelf continental slope data set hydrography oceanic front phytoplankton salinity satellite imagery sea surface temperature western boundary current Atlantic Ocean Drake Passage Malvinas Current Patagonia
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_18120784_v6_n1_p345_Piola
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_18120784_v6_n1_p345_Piola
record_format	dspace
spelling	todo:paper_18120784_v6_n1_p345_Piola2023-10-03T16:33:01Z Malvinas-slope water intrusions on the northern Patagonia continental shelf Piola, A.R. Martínez Avellaneda, N. Guerrero, R.A. Jardón, F.P. Palma, E.D. Romero, S.I. chlorophyll a continental shelf continental slope data set hydrography oceanic front phytoplankton salinity satellite imagery sea surface temperature western boundary current Atlantic Ocean Drake Passage Malvinas Current Patagonia The Patagonia continental shelf located off southeastern South America is bounded offshore by the Malvinas Current, which extends northward from northern Drake Passage (∼55deg; S) to nearly 38deg; 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 41deg; 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. Fil:Romero, S.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_18120784_v6_n1_p345_Piola
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	chlorophyll a continental shelf continental slope data set hydrography oceanic front phytoplankton salinity satellite imagery sea surface temperature western boundary current Atlantic Ocean Drake Passage Malvinas Current Patagonia
spellingShingle	chlorophyll a continental shelf continental slope data set hydrography oceanic front phytoplankton salinity satellite imagery sea surface temperature western boundary current Atlantic Ocean Drake Passage Malvinas Current Patagonia Piola, A.R. Martínez Avellaneda, N. Guerrero, R.A. Jardón, F.P. Palma, E.D. Romero, S.I. Malvinas-slope water intrusions on the northern Patagonia continental shelf
topic_facet	chlorophyll a continental shelf continental slope data set hydrography oceanic front phytoplankton salinity satellite imagery sea surface temperature western boundary current Atlantic Ocean Drake Passage Malvinas Current Patagonia
description	The Patagonia continental shelf located off southeastern South America is bounded offshore by the Malvinas Current, which extends northward from northern Drake Passage (∼55deg; S) to nearly 38deg; 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 41deg; 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.
format	JOUR
author	Piola, A.R. Martínez Avellaneda, N. Guerrero, R.A. Jardón, F.P. Palma, E.D. Romero, S.I.
author_facet	Piola, A.R. Martínez Avellaneda, N. Guerrero, R.A. Jardón, F.P. Palma, E.D. Romero, S.I.
author_sort	Piola, A.R.
title	Malvinas-slope water intrusions on the northern Patagonia continental shelf
title_short	Malvinas-slope water intrusions on the northern Patagonia continental shelf
title_full	Malvinas-slope water intrusions on the northern Patagonia continental shelf
title_fullStr	Malvinas-slope water intrusions on the northern Patagonia continental shelf
title_full_unstemmed	Malvinas-slope water intrusions on the northern Patagonia continental shelf
title_sort	malvinas-slope water intrusions on the northern patagonia continental shelf
url	http://hdl.handle.net/20.500.12110/paper_18120784_v6_n1_p345_Piola
work_keys_str_mv	AT piolaar malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf AT martinezavellanedan malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf AT guerrerora malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf AT jardonfp malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf AT palmaed malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf AT romerosi malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf
_version_	1807322605153157120

Malvinas-slope water intrusions on the northern Patagonia continental shelf

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