Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn
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Redalyc · Ciencias Marinas
The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz, Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and in an adjacent area of the Gulf of California in July 1997....
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| Format: | Artículo científico |
| Language: | en |
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Universidad Autónoma de Baja California
2003
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| _version_ | 1878325298301239296 |
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| author | Felipe Salinas González |
| author_facet | Felipe Salinas González |
| collection | Ciencias Marinas |
| container_title | Ciencias Marinas |
| contents | Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn Felipe Salinas González Oleg Zaytsev Vyacheslav Makarov Ciencias de la Tierra S diagrams mixed layer Gulf of California density distribution seasonal transformation The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz,Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and inan adjacent area of the Gulf of California in July 1997. In August 1999, intense density stratification was recorded from thesurface to 60-m depth, because of a positive daily heat balance and weak vertical mixing. In autumn (Oct. 1997 and Nov. 1998),the upper mixed layer (ML) was 4050-m thick, and the thermocline had a maximum vertical gradient up to 0.6ºC per meter. Thethree-dimensional distribution of density shows concave isopycnics towards the center of the bay, suggesting the possibleexistence of anticyclonic vorticity. The non-uniformity of this spatial mass field was formed by local heating and evaporationprocesses, and by the water exchange with the open ocean through the mouths of the bay. The physical reasons for the variationsin the ML are discussed. The deepwater body (>150 m) maintained almost constant thermohaline variables during the study andno noticeable variations were detected in the surface layer. The T-S diagrams were different from those of the Gulf of Californiawater mass and similar to Subtropical Subsurface waters ones (less saline). In October 1997, a 2.5ºC increase in temperature wasmeasured at the surface layer which considered related to the peak of the 1997 El Niño. 2003 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48029106 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.29 |
| ctrlnum | oai:cienciasmarinas.com.mx:article/134 10.7773/cm.v29i1.134 |
| description | The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz, Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and in an adjacent area of the Gulf of California in July 1997. In August 1999, intense density stratification was recorded from the surface to 60-m depth, because of a positive daily heat balance and weak vertical mixing. In autumn (Oct. 1997 and Nov. 1998), the upper mixed layer (ML) was 40–50-m thick, and the thermocline had a maximum vertical gradient up to 0.6ºC per meter. The three-dimensional distribution of density shows concave isopycnics towards the center of the bay, suggesting the possible existence of anticyclonic vorticity. The non-uniformity of this spatial mass field was formed by local heating and evaporation processes, and by the water exchange with the open ocean through the mouths of the bay. The physical reasons for the variations in the ML are discussed. The deepwater body (>150 m) maintained almost constant thermohaline variables during the study and no noticeable variations were detected in the surface layer. The T-S diagrams were different from those of the Gulf of California water mass and similar to Subtropical Subsurface waters ones (less saline). In October 1997, a 2.5ºC increase in temperature was measured at the surface layer which considered related to the peak of the 1997 El Niño.
Se estudió la formación de la estructura termohalina en el cuerpo costero profundo de la Bahía de La Paz, Golfo de California en la época de verano-otoño, a partir de mediciones de parámetros termohalinos recolectados en los meses de octubre de 1997, noviembre de 1998, agosto de 1999 y en la zona adyacente del Golfo de California en julio de 1997. En agosto de 1999 se registró una estratificación intensa de densidad desde la superficie hasta los 60 m de profundidad, debido al balance positivo diario de calor y a la débil mezcla vertical. En otoño (octubre de 1997 y noviembre de 1998), la capa superficial de mezcla (ML) fue de 40–50 m de espesor y la termoclina tuvo un gradiente vertical máximo de hasta 0.6ºC por metro. La distribución tridimensional de densidad muestra la concavidad de las isopicnas al centro de la bahía, sugiriendo la posible existencia de vorticidad anticiclónica. La no uniformidad espacial de este campo de masa se formó por los procesos locales de calentamiento, evaporación, y por el intercambio de agua con el mar abierto a través de las bocas de la bahía. Se discutieron las razones físicas de las variaciones en la ML. El cuerpo de agua profundo (>150 m) mantuvo sus parámetros termohalinos casi constantes durante la experimentación y no se detectaron variaciones apreciables en la capa superficial. Los diagramas T-S fueron distintos a los del Agua del Golfo de California, y similares a los de las Aguas Subsuperficiales Subtropicales (menos salinas). En octubre de 1997 se registró un incremento de temperatura de 2.5ºC, el cual se consideró, estuvo relacionado con el máximo de El Niño de 1997. |
| format | Artículo científico |
| id | redalyc_48029106 |
| institution | Redalyc Ciencias Marinas |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Autónoma de Baja California |
| spelling | Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn Formación de la estructura termohalina del agua en la Bahía de La Paz de verano a otoño González-Salinas, F Zaytsev, O Makarov, V Gulf of California density distribution mixed layer seasonal transformation T-S diagrams Golfo de California distribución de densidad capa de mezcla transformación estaciona diagramas T-S The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz, Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and in an adjacent area of the Gulf of California in July 1997. In August 1999, intense density stratification was recorded from the surface to 60-m depth, because of a positive daily heat balance and weak vertical mixing. In autumn (Oct. 1997 and Nov. 1998), the upper mixed layer (ML) was 40–50-m thick, and the thermocline had a maximum vertical gradient up to 0.6ºC per meter. The three-dimensional distribution of density shows concave isopycnics towards the center of the bay, suggesting the possible existence of anticyclonic vorticity. The non-uniformity of this spatial mass field was formed by local heating and evaporation processes, and by the water exchange with the open ocean through the mouths of the bay. The physical reasons for the variations in the ML are discussed. The deepwater body (>150 m) maintained almost constant thermohaline variables during the study and no noticeable variations were detected in the surface layer. The T-S diagrams were different from those of the Gulf of California water mass and similar to Subtropical Subsurface waters ones (less saline). In October 1997, a 2.5ºC increase in temperature was measured at the surface layer which considered related to the peak of the 1997 El Niño. Se estudió la formación de la estructura termohalina en el cuerpo costero profundo de la Bahía de La Paz, Golfo de California en la época de verano-otoño, a partir de mediciones de parámetros termohalinos recolectados en los meses de octubre de 1997, noviembre de 1998, agosto de 1999 y en la zona adyacente del Golfo de California en julio de 1997. En agosto de 1999 se registró una estratificación intensa de densidad desde la superficie hasta los 60 m de profundidad, debido al balance positivo diario de calor y a la débil mezcla vertical. En otoño (octubre de 1997 y noviembre de 1998), la capa superficial de mezcla (ML) fue de 40–50 m de espesor y la termoclina tuvo un gradiente vertical máximo de hasta 0.6ºC por metro. La distribución tridimensional de densidad muestra la concavidad de las isopicnas al centro de la bahía, sugiriendo la posible existencia de vorticidad anticiclónica. La no uniformidad espacial de este campo de masa se formó por los procesos locales de calentamiento, evaporación, y por el intercambio de agua con el mar abierto a través de las bocas de la bahía. Se discutieron las razones físicas de las variaciones en la ML. El cuerpo de agua profundo (>150 m) mantuvo sus parámetros termohalinos casi constantes durante la experimentación y no se detectaron variaciones apreciables en la capa superficial. Los diagramas T-S fueron distintos a los del Agua del Golfo de California, y similares a los de las Aguas Subsuperficiales Subtropicales (menos salinas). En octubre de 1997 se registró un incremento de temperatura de 2.5ºC, el cual se consideró, estuvo relacionado con el máximo de El Niño de 1997. Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas 2003-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/134 10.7773/cm.v29i1.134 Ciencias Marinas; Vol. 29 No. 1 (2003); 51-65 Ciencias Marinas; Vol. 29 Núm. 1 (2003); 51-65 2395-9053 0185-3880 eng https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/134/111 ['Redalyc'] redalyc_48029106 Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn ['Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn', 'Felipe Salinas González', 'Ciencias de la Tierra', 'S diagrams', 'mixed layer', 'Gulf of California', 'density distribution', 'seasonal transformation', 'Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn Felipe Salinas González Oleg Zaytsev Vyacheslav Makarov Ciencias de la Tierra S diagrams mixed layer Gulf of California density distribution seasonal transformation The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz,Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and inan adjacent area of the Gulf of California in July 1997. In August 1999, intense density stratification was recorded from thesurface to 60-m depth, because of a positive daily heat balance and weak vertical mixing. In autumn (Oct. 1997 and Nov. 1998),the upper mixed layer (ML) was 40\x9650-m thick, and the thermocline had a maximum vertical gradient up to 0.6ºC per meter. Thethree-dimensional distribution of density shows concave isopycnics towards the center of the bay, suggesting the possibleexistence of anticyclonic vorticity. The non-uniformity of this spatial mass field was formed by local heating and evaporationprocesses, and by the water exchange with the open ocean through the mouths of the bay. The physical reasons for the variationsin the ML are discussed. The deepwater body (>150 m) maintained almost constant thermohaline variables during the study andno noticeable variations were detected in the surface layer. The T-S diagrams were different from those of the Gulf of Californiawater mass and similar to Subtropical Subsurface waters ones (less saline). In October 1997, a 2.5ºC increase in temperature wasmeasured at the surface layer which considered related to the peak of the 1997 El Niño. 2003 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48029106 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.29'] ['Felipe Salinas González'] ['Felipe Salinas González'] ['Artículo científico'] ['2003'] ['Universidad Autónoma de Baja California'] ['en'] ['Ciencias de la Tierra', 'S diagrams', 'mixed layer', 'Gulf of California', 'density distribution', 'seasonal transformation'] ['https://www.redalyc.org/articulo.oa?id=48029106'] ['Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn Felipe Salinas González Oleg Zaytsev Vyacheslav Makarov Ciencias de la Tierra S diagrams mixed layer Gulf of California density distribution seasonal transformation The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz,Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and inan adjacent area of the Gulf of California in July 1997. In August 1999, intense density stratification was recorded from thesurface to 60-m depth, because of a positive daily heat balance and weak vertical mixing. In autumn (Oct. 1997 and Nov. 1998),the upper mixed layer (ML) was 40\x9650-m thick, and the thermocline had a maximum vertical gradient up to 0.6ºC per meter. Thethree-dimensional distribution of density shows concave isopycnics towards the center of the bay, suggesting the possibleexistence of anticyclonic vorticity. The non-uniformity of this spatial mass field was formed by local heating and evaporationprocesses, and by the water exchange with the open ocean through the mouths of the bay. The physical reasons for the variationsin the ML are discussed. The deepwater body (>150 m) maintained almost constant thermohaline variables during the study andno noticeable variations were detected in the surface layer. The T-S diagrams were different from those of the Gulf of Californiawater mass and similar to Subtropical Subsurface waters ones (less saline). In October 1997, a 2.5ºC increase in temperature wasmeasured at the surface layer which considered related to the peak of the 1997 El Niño. 2003 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48029106 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.29'] |
| spellingShingle | Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn Felipe Salinas González Ciencias de la Tierra S diagrams mixed layer Gulf of California density distribution seasonal transformation Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn Felipe Salinas González Oleg Zaytsev Vyacheslav Makarov Ciencias de la Tierra S diagrams mixed layer Gulf of California density distribution seasonal transformation The summer-autumn formation of the thermohaline structure of the coastal deepwater body was studied in Bahía de La Paz,Gulf of California, from measurements the thermohaline variables taken in October 1997, November 1998, August 1999, and inan adjacent area of the Gulf of California in July 1997. In August 1999, intense density stratification was recorded from thesurface to 60-m depth, because of a positive daily heat balance and weak vertical mixing. In autumn (Oct. 1997 and Nov. 1998),the upper mixed layer (ML) was 4050-m thick, and the thermocline had a maximum vertical gradient up to 0.6ºC per meter. Thethree-dimensional distribution of density shows concave isopycnics towards the center of the bay, suggesting the possibleexistence of anticyclonic vorticity. The non-uniformity of this spatial mass field was formed by local heating and evaporationprocesses, and by the water exchange with the open ocean through the mouths of the bay. The physical reasons for the variationsin the ML are discussed. The deepwater body (>150 m) maintained almost constant thermohaline variables during the study andno noticeable variations were detected in the surface layer. The T-S diagrams were different from those of the Gulf of Californiawater mass and similar to Subtropical Subsurface waters ones (less saline). In October 1997, a 2.5ºC increase in temperature wasmeasured at the surface layer which considered related to the peak of the 1997 El Niño. 2003 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48029106 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.1 Vol.29 |
| title | Formation of the thermohaline structure of water in the Bahía de La Paz from summer to autumn |
| title_alt | Formación de la estructura termohalina del agua en la Bahía de La Paz de verano a otoño |
| topic | Ciencias de la Tierra S diagrams mixed layer Gulf of California density distribution seasonal transformation |
| topic_facet | Gulf of California density distribution mixed layer seasonal transformation T-S diagrams Golfo de California distribución de densidad capa de mezcla transformación estaciona diagramas T-S |
| url | https://www.redalyc.org/articulo.oa?id=48029106 https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/134 |