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Título : | Influence of coastal upwelling and El Niño-Southern Oscillation on nearshore water along Baja California and Chile: shore-based monitoring during 1997-2000 |
Autor : | Takesue, Rene K. Van Green, Alexander Carriquiry, José D. Ortiz, Eduardo Godinez Orta, Lucio Grandados, Ivette Saldivar, Marcos Ortlieb, Luc Guzmán, Nury Castilla, Juan |
Palabras clave : | archipielago, Climate and interannual variability, Nutrients and nutrient cycling, Trace elements, Eastern boundary currents |
Fecha de publicación : | 2004 |
Editorial : | Journal of Geophysical Research |
Resumen : | In order to determine the sensitivity of coastal upwelling tracers to seasonal wind forcing and El Nino-Southern Oscillation (ENSO) off Baja California and Chile, nearshore salinity, cadmium (Cd), and nutrients phosphate, silicate, nitrate+nitrite were monitored in surf zone waters at six locations along the North and South American coasts during 1997-2000. The clearest responses to upwelling favorable wind forcing were observed at the southern tip of Baja California (23.3°N) and off central-southern Chile (36.5°S). Upwelling tracers at 23.3°N were also the most sensitive to El Niño: average summer Cd and nutrient enrichments were 60% lower following El Niño than during the previous non - El Niño upwelling season. At two sites on the northern and central Chile coasts, conditions associated with El Niño resulted in salinity anomalies >1. Such large shifts in nearshore water properties suggest it may be possible to reconstruct past ENSO patterns from geochemical paleonutrient/paleosalinity proxy records preserved in nearshore archives such as mollusc or foraminifera shells. |
URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/13275 |
ISSN : | 0148-0227 |
Aparece en las colecciones: | Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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Takesue_Rene_K._2004_Journal_of_Geophysical_Research_1229.pdf | 54.96 kB | Adobe PDF | Visualizar/Abrir |
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