Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula
22 pages, 3 tables, 8 figures The hydrographic, chemical and biological conditions observed during spring and summer upwelling events off the NW Iberian Peninsula are compared. Meteorological data showed that northeasterly winds were of similar magnitude during both cruises, whereas the effect of up...
Published in: | Continental Shelf Research |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2000
|
Subjects: | |
Online Access: | http://hdl.handle.net/10261/169655 https://doi.org/10.1016/S0278-4343(99)00071-0 |
id |
ftcsic:oai:digital.csic.es:10261/169655 |
---|---|
record_format |
openpolar |
spelling |
ftcsic:oai:digital.csic.es:10261/169655 2024-02-11T10:06:35+01:00 Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula Castro, Carmen G. Pérez, Fiz F. Álvarez-Salgado, Xosé Antón Fraga, Fernando 2000 http://hdl.handle.net/10261/169655 https://doi.org/10.1016/S0278-4343(99)00071-0 en eng Elsevier https://doi.org/10.1016/S0278-4343(99)00071-0 Sí Continental Shelf Research 20(2): 189-210 (2000) 0278-4343 http://hdl.handle.net/10261/169655 doi:10.1016/S0278-4343(99)00071-0 1873-6955 none Oceanography Chemical and biological Nutrients Coastal upwelling NW Iberian Peninsula artículo http://purl.org/coar/resource_type/c_6501 2000 ftcsic https://doi.org/10.1016/S0278-4343(99)00071-0 2024-01-16T10:32:49Z 22 pages, 3 tables, 8 figures The hydrographic, chemical and biological conditions observed during spring and summer upwelling events off the NW Iberian Peninsula are compared. Meteorological data showed that northeasterly winds were of similar magnitude during both cruises, whereas the effect of upwelling was more intense during the spring than during the summer since stratification was weaker in spring. In the two situations the recurrent upwelling centre off Cape Finisterre (43°N, 9°W) divided the study area into two provinces. The two provinces differ in the occurrence and intensity of winds and in the origin of the upwelled water. Eastern North Atlantic Central Water of subpolar origin (ENACWP) was recorded north of Cape Finisterre during the two events. South of the Cape, ENACWP was observed during the spring situation, whereas ENACW of subtropical origin (ENACWT) prevailed during the summer cruise. Despite the different thermohaline and chemical properties of these two varieties of ENACW, similar nutrient levels were found in the two provinces due to strong remineralisation processes on the southern shelf. In addition, slower horizontal circulation at the southern edge of the upwelling centre and the influence of four large embayments (the Rı́as Baixas) south of Cape Finisterre, favoured chlorophyll accumulation south of the upwelling centre, which has similarly been observed in other upwelling centres around the world This study was supported from EU project No. MAST-CT90-0017. X.A.A.-S. was partially funded by a “Contrato de Incorporación” of the Spanish “Ministerio de Educación y Ciencia” Peer reviewed Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Continental Shelf Research 20 2 189 210 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Oceanography Chemical and biological Nutrients Coastal upwelling NW Iberian Peninsula |
spellingShingle |
Oceanography Chemical and biological Nutrients Coastal upwelling NW Iberian Peninsula Castro, Carmen G. Pérez, Fiz F. Álvarez-Salgado, Xosé Antón Fraga, Fernando Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula |
topic_facet |
Oceanography Chemical and biological Nutrients Coastal upwelling NW Iberian Peninsula |
description |
22 pages, 3 tables, 8 figures The hydrographic, chemical and biological conditions observed during spring and summer upwelling events off the NW Iberian Peninsula are compared. Meteorological data showed that northeasterly winds were of similar magnitude during both cruises, whereas the effect of upwelling was more intense during the spring than during the summer since stratification was weaker in spring. In the two situations the recurrent upwelling centre off Cape Finisterre (43°N, 9°W) divided the study area into two provinces. The two provinces differ in the occurrence and intensity of winds and in the origin of the upwelled water. Eastern North Atlantic Central Water of subpolar origin (ENACWP) was recorded north of Cape Finisterre during the two events. South of the Cape, ENACWP was observed during the spring situation, whereas ENACW of subtropical origin (ENACWT) prevailed during the summer cruise. Despite the different thermohaline and chemical properties of these two varieties of ENACW, similar nutrient levels were found in the two provinces due to strong remineralisation processes on the southern shelf. In addition, slower horizontal circulation at the southern edge of the upwelling centre and the influence of four large embayments (the Rı́as Baixas) south of Cape Finisterre, favoured chlorophyll accumulation south of the upwelling centre, which has similarly been observed in other upwelling centres around the world This study was supported from EU project No. MAST-CT90-0017. X.A.A.-S. was partially funded by a “Contrato de Incorporación” of the Spanish “Ministerio de Educación y Ciencia” Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Castro, Carmen G. Pérez, Fiz F. Álvarez-Salgado, Xosé Antón Fraga, Fernando |
author_facet |
Castro, Carmen G. Pérez, Fiz F. Álvarez-Salgado, Xosé Antón Fraga, Fernando |
author_sort |
Castro, Carmen G. |
title |
Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula |
title_short |
Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula |
title_full |
Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula |
title_fullStr |
Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula |
title_full_unstemmed |
Coupling between thermohaline and chemical fields during two contrasting upwelling events off the NW Iberian Peninsula |
title_sort |
coupling between thermohaline and chemical fields during two contrasting upwelling events off the nw iberian peninsula |
publisher |
Elsevier |
publishDate |
2000 |
url |
http://hdl.handle.net/10261/169655 https://doi.org/10.1016/S0278-4343(99)00071-0 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://doi.org/10.1016/S0278-4343(99)00071-0 Sí Continental Shelf Research 20(2): 189-210 (2000) 0278-4343 http://hdl.handle.net/10261/169655 doi:10.1016/S0278-4343(99)00071-0 1873-6955 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/S0278-4343(99)00071-0 |
container_title |
Continental Shelf Research |
container_volume |
20 |
container_issue |
2 |
container_start_page |
189 |
op_container_end_page |
210 |
_version_ |
1790604387017555968 |