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Malvinas-slope Water Intrusions on the Northern Patagonia Continental Shelf : Volume 6, Issue 1 (08/03/2010)

By Piola, A. R.

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Book Id: WPLBN0004020442
Format Type: PDF Article :
File Size: Pages 15
Reproduction Date: 2015

Title: Malvinas-slope Water Intrusions on the Northern Patagonia Continental Shelf : Volume 6, Issue 1 (08/03/2010)  
Author: Piola, A. R.
Volume: Vol. 6, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Guerrero, R. A., Palma, E. D., Jardón, F. P., Romero, S. I., Avellaneda, N. M., & Piola, A. R. (2010). Malvinas-slope Water Intrusions on the Northern Patagonia Continental Shelf : Volume 6, Issue 1 (08/03/2010). Retrieved from

Description: Departamento Oceanografía, Servicio de Hidrografía Naval, Buenos Aires, Argentina. 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.

Malvinas-slope water intrusions on the northern Patagonia continental shelf

Acha, E. M., Mianzan, H. W., Guerrero, R. A., Favero, M., and Bava, J.: Marine fronts at the continental shelves of austral South America, physical and ecological processes, J. Mar. Syst., 44, 83–105, 2004.; Beardsley, R. C. and Flagg, C. N.: The water structure, mean currents, and shelf-water/slope-water-front on the New England continental shelf, in: Continental Shelf Dynamics, edited by: Nihoul, J. C. J., pp. 209–225, Siege de la Soc. Univ., Liege, Belgium, 1976.; Bertolotti, M. I., Brunetti, N. E., Carreto, J. I., Prenski, L. B., and Sanchez, R.: Influence of shelf-break fronts on shellfish and fish stocks off Argentina, ICES, CM. 1996/S. 41, 1996.; Bianchi, A. A., Ruiz-Pino, D., Isbert Perlender, H., Osiroff, A. P., Segura, V., Lutz, V. A., Luz Clara, M., Balestrini, C. F., and Piola, A. R.: Annual balance and seasonal variability of sea-air CO2 fluxes in the Patagonia Sea: Their relationship with fronts and chlorophyll distribution, J. Geophys. Res., 114, C03018, doi:10.1029/2008JC004854, 2009.; Bogazzi, E., Baldoni, A., Rivas, A., Martos, P., Reta, R., Orensanz, J. M., Lasta, M., Dell'Arciprete, P., and Werner, F.: Spatial correspondence between areas of concentration of Patagonian scallop (Zygochlamys patagonica) and frontal systems in the southwestern Atlantic, Fish. Oceanogr., 14, 359–376, 2005.; Goni, G. and Wainer, I.: Investigation of the Brazil Current front variability from altimeter data, J. Geophys. Res., 116, 31117–31128, 2001.; Borges, A. V., Delille, B., and Frankignoulle, M.: Budgeting sinks and sources of CO2 in the coastal ocean: Diversity of ecosystems counts, Geophys. Res. Lett., 32, L14601, doi:10.1029/2005GL023053, 2005.; Brandhorst, W. and Castello, J. P.: Evaluación de los recursos de anchoíta (Engraulis anchoita) frente a la Argentina y Uruguay. I. Las condiciones oceanográficas, sinopsis del conocimiento actual sobre la anchoíta y el plan para su evaluación, Proy. Des. Pesq. FAO, Publication 29, 63 pp., Mar del Plata, Argentina, 1971.; Capet, X., Campos, E. J., and Paiva, A. M.: Submesoscale activity over the Argentinian shelf, Geophys. Res. Lett., 35, L15605, doi:10.1029/2008GL034736, 2008.; Carreto, J. I., Lutz, V. A., Carignan, M. O., Cucchi Colleoni, A. D., and de Marco, S. G.: Hydrography and chlorophyll a in a transect from the coast to the shelf-break in the Argentinian Sea, Cont. Shelf Res., 15, 315–336, 1995.; Chelton, D. B., Schlax, M. G., Witter, D. L., and Richman, J. G.: Geosat Altimeter Observations of the Surface Circulation of the Southern Ocean, J. Geophys. Res., 95, 17877–17903, 1990.; Franco, B. C., Muelbert, J. H., and Mata, M. M.: Mesoscale physical processes and the distribution and composition of ichthyoplankton on the southern Brazilian shelf break, Fish. Oceanogr., 15, 37–43, 2005.; Franco, B. C., Piola, A. R., Rivas, A. L., Baldoni, A., and Pisoni, J. P.: Multiple thermal fronts near the Patagonian shelf break, Geophys. Res. Lett., 35, L02607, doi:10.1029/2007GL032066, 2008.; Garcia, C. A. E., Sarma, Y. V. B., Mata, M. M., and Garcia, V. M. T.: Chlorophyll variability and eddies in the Brazil–Malvinas Confluence region, Deep-Sea Res. II, 51, 159–172, 2004.; Garcia, V. M. T., Garcia, C. A. E., Mata, M. M., Pollery, R., Piola, A. R., Signorini, S., and McClain, C. R.: Environmental factors controlling the phytoplankton blooms at the Patagonia shelf-break in spring, Deep-Sea Res. I, 55, 1150–1166, 2008.; Glorioso, P. D., Piola, A. R., and Leben, R. R.: Mesoscale eddies in the Subantarctic Front – Southwest Atlantic, Scientia Marina, 69, Suppl. 2, 7–15, 2005.; Gordon, A. L.: South Atlantic thermocline ventilation, Deep-Sea Res., 28, 1239–1264, 1981.; Gordon, A. L. and Greengrove, C. L.: Geostrophic circulation of the Brazil-Falkland Confluence, Deep Sea Res., Part A, 33, 573–585, 1986.; Guerrero, R. A. and Piola, A. R.: Masas de agua en la plataforma continental, in: El mar Argentino y sus recursos pesqueros, Volume 1, edited by: Boschi, E. E., Insti


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