The effects of a winter upwelling on biogeochemical and planktonic components in an area close to the Galician Upwelling Core: The Sound of Corcubión (NW Spain)

Varela, Manuel; Alvarez-Ossorio, M.; Bode, Antonio; Prego, Ricardo; Bernárdez, Patricia; García-Soto, Carlos

doi:10.1016/j.seares.2010.03.004

Cited by 18 publications

(20 citation statements)

References 41 publications

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“…Nevertheless, several autumn-winter upwelling events have been characterized over the last years along the western coast (Alvarez et al 2003;deCastro et al 2006adeCastro et al , 2008Prego et al 2007;Varela et al 2010) and along the northern coast (Alvarez et al 2009). The mechanism driving these autumn-winter Estos autores encontraron que durante la estación de invierno (NDE) los patrones EA/WR y EA explicaban la mayor variabilidad del IA, mientras que durante el verano (JJA) la variabilidad se explicaba en términos del patrón EA.…”

Section: Factors Responsible For Autumn-winter Upwelling Eventsunclassified

“…No obstante, en los últimos años se han caracterizado varios eventos de afloramiento en otoño e invierno en la costa oeste (Alvarez et al 2003;deCastro et al 2006adeCastro et al , 2008Prego et al 2007;Varela et al 2010) y la costa norte (Alvarez et al 2009) de Galicia. El mecanismo responsable de la aparición de estos eventos es similar al observado en primavera y verano; es decir, vientos del norte a lo largo de la costa oeste y vientos del este a lo largo de la costa norte.…”

Section: Factores Responsables De Los Eventos De Afloramiento De Otoñunclassified

“…In the previous sections, it has been observed that the aflorada pueden ser diferentes. Así, algunos autores han detectado afloramiento de agua asociada con la IPC (Alvarez et al 2003, Prego et al 2007, con ENACW (deCastro et al 2006aPrego et al 2007;Varela et al 2010) y con agua oceánica subsuperficial procedente de la plataforma (Alvarez et al 2009). Para ilustrar estos diferentes tipos de agua subsuperficial, en la figura 6 se muestra el diagrama de temperatura y salinidad correspondiente a los datos medidos durante las campañas consideradas en la tabla 2.…”

Section: Oceanographic Implicationsunclassified

“…For example, a winter upwelling event (January 1998) was described in the Pontevedra Ria, characterized by the entrance into the estuary of warm and salty water driven by the Iberian Poleward Current (IPC) (Alvarez et al 2003, Prego et al 2007. ENACW was also observed in the Pontevedra Ria in late winter (March 1998, Prego et al 2007, in the Vigo Ria during autumn (November 2001, deCastro et al 2006a, and in Corcubión Sound in midwinter (February 2005, Varela et al 2010. Finally, evidence of winter upwelling was described for the first time in the northern Galician rias (February 2008, Alvarez et al 2009), characterized by the presence of upwelled shelf bottom seawater not associated with ENACW or IPC.…”

Section: Introductionmentioning

confidence: 99%

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Galicia upwelling revisited: out-of-season events in the rias (1967–2009)

Álvarez

Prego²,

deCastro

et al. 2011

Cienc. Mar.

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La costa noroeste de la Península Ibérica es el límite norte del Sistema de Afloramiento del Atlántico Noreste, el cual se extiende desde 10º N hasta 44º N (Wooster et al. 1976). Los cabos Finisterre y Ortegal marcan cambios abruptos en la orientación de la costa de Galicia, dividiéndola en tres ABSTRACT. Over the last decades several studies have been conducted on upwelling along the Galician coast that have significantly improved the knowledge of this process. These investigations showed that upwelling along this coast is a frequent phenomenon during the spring and summer months, pumping colder Eastern North Atlantic Central Water into the rias. Nevertheless, several upwelling events in autumn and winter have been characterized in the Galician rias, indicating that the upwelling process along the Galician coast is not a phenomenon restricted to spring and summer. In this study the recurrence of these upwelling events has been reviewed from published articles and analyzed from 1967 to 2009 along the western and northern Galician coasts in terms of an upwelling index. The highest mean number of days under favorable upwelling conditions per month was observed during spring and summer on the western (18-26 days) and northern (12-14 days) coasts. During autumn and winter the number of days was lower (11-18 days, western coast; 8-10 days, northern coast) although not negligible, showing the possibility of observing upwelling events during this period. In fact, during these months a significant probability of observing favorable upwelling conditions along both coasts (26%) was found, though the most probable situation corresponded to unfavorable upwelling conditions (44%). The results thus revealed that these events cannot be considered isolated episodes. Upwelling processes in the rias should be observed under favorable conditions, such as prevalence of northerly wind at the adjacent western Galician shelf, independently of the season.Key words: upwelling, autumn, winter, ria, NW Iberian Peninsula. RESUMEN.Durante las últimas décadas se han llevado a cabo varios estudios relacionados con el fenómeno de afloramiento a lo largo de la costa de Galicia que han mejorado significativamente el conocimiento de este proceso. De los resultados de estos trabajos se ha encontrado que el afloramiento a lo largo de esta costa es un fenómeno frecuente durante los meses de primavera y verano, introduciendo Agua Central del Atlántico Norte en el interior de las rías. Sin embargo, en las rías gallegas se han caracterizado varios eventos de afloramiento durante otoño e invierno que indican que este proceso no es un fenómeno exclusivo de las estaciones de primavera y verano. En este estudio se hace una revisión de estos eventos teniendo en cuenta artículos ya publicados y también se analiza su recurrencia a lo largo de las costas oeste y norte de Galicia a partir de datos de índice de afloramiento de 1967 a 2009. El número medio de días por mes con condiciones favorables de afloramiento más elevado se observó durante los meses de prima...

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Section: Factors Responsible For Autumn-winter Upwelling Eventsunclassified

Section: Factores Responsables De Los Eventos De Afloramiento De Otoñunclassified

Section: Oceanographic Implicationsunclassified

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Galicia upwelling revisited: out-of-season events in the rias (1967–2009)

Álvarez

Prego²,

deCastro

et al. 2011

Cienc. Mar.

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“…This is a good approximation in shallow waters within the surface mixing layer (the upper part of the water column where physical properties remain homogeneous due to wind and wave induced mixing). From depths around 20 m, sound velocity profile could be altered due to the presence of a thermocline (Varela et al, 2005(Varela et al, , 2010. Variations in the surface temperature as measured by the echosounder were less than 2ºC during the entire survey.…”

Section: Depth Calculation (Sound Velocity)mentioning

confidence: 99%

Fast and low-cost method for VBES bathymetry generation in coastal areas

Sánchez-Carnero

Aceña

Rodríguez‐Pérez

et al. 2012

Estuarine, Coastal and Shelf Science

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Seasonal fluctuations of ichthyoplankton assemblage in the northeastern South China Sea influenced by the Kuroshio intrusion

et al. 2017

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The distribution and assemblage of ichthyoplankton related to local hydrographic features, especially intrusion of the Kuroshio Current (KC) and Guangdong Coastal Current (GCC) in the northeastern South China Sea (NESCS) were investigated in this study. A total of 193 species of ichthyoplankton belonging to 141 genera and 66 families were recognized in summer 2015 and late‐winter 2016. The ichthyoplankton assemblage was identified with distinct seasonal differences, and the differences were responded well with the oceanography conditions. In summer, the assemblages were identified into offshore and inshore groups, as controlled by the South China Sea Warm Current (SCSWC) in off‐shelf, upwelling, and the diluted water from the Pearl River in inshore. In winter, three groups were divided, representing the southwestern inshore, intrusion of the KC in the eastern offshore, and the GCC in the northern inshore area, respectively. Furthermore, Sigmops gracilis and Vinciguerria sp.3 were probably brought into the NESCS by intrusion of the KC from the eastern Luzon Strait. In addition, high ichthyoplankton abundance was found in high chlorophyll a located in upwelling areas in the northern coastal area in summer and in the southwestern Taiwan Bank in winter, respectively. The nutrition outcropped by the upwelling together, and those brought from the Pearl River probably supported high food availability of the ichthyoplankton in the northern coast of the NESCS.

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The effects of a winter upwelling on biogeochemical and planktonic components in an area close to the Galician Upwelling Core: The Sound of Corcubión (NW Spain)

Cited by 18 publications

References 41 publications

Galicia upwelling revisited: out-of-season events in the rias (1967–2009)

Galicia upwelling revisited: out-of-season events in the rias (1967–2009)

Fast and low-cost method for VBES bathymetry generation in coastal areas

Seasonal fluctuations of ichthyoplankton assemblage in the northeastern South China Sea influenced by the Kuroshio intrusion

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