Malvinas-slope water intrusions on the northern Patagonia continental shelf
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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2010
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18120784_v6_n1_p345_Piola http://hdl.handle.net/20.500.12110/paper_18120784_v6_n1_p345_Piola |
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paper:paper_18120784_v6_n1_p345_Piola2023-06-08T16:29:12Z Malvinas-slope water intrusions on the northern Patagonia continental shelf Romero, Silvia Inés 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. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18120784_v6_n1_p345_Piola 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 Romero, Silvia Inés 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. |
| author |
Romero, Silvia Inés |
| author_facet |
Romero, Silvia Inés |
| author_sort |
Romero, Silvia Inés |
| 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 |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18120784_v6_n1_p345_Piola http://hdl.handle.net/20.500.12110/paper_18120784_v6_n1_p345_Piola |
| work_keys_str_mv |
AT romerosilviaines malvinasslopewaterintrusionsonthenorthernpatagoniacontinentalshelf |
| _version_ |
1768546649311805440 |