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Spatial thermohaline variability, water masses and geostrophic circulation in Bahia de La Paz, Gulf of California
CTD measurements were processed to analyze the thermohaline variability, presence of water masses and geostrophic circulation during a period of neutral ENSO. The abrupt stratification and the steep thermocline, halocline and pycnocline in May and the thermocline and pycnocline in July, were generat...
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Published in: | Revista de biología marina y oceanografía 2014-03, Vol.49 (3), p.413-426 |
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Main Authors: | , , , |
Format: | Article |
Language: | Spanish |
Subjects: | |
Online Access: | Get full text |
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Summary: | CTD measurements were processed to analyze the thermohaline variability, presence of water masses and geostrophic circulation during a period of neutral ENSO. The abrupt stratification and the steep thermocline, halocline and pycnocline in May and the thermocline and pycnocline in July, were generated by the entry of water of the gulf, originating from coastal upwelling, due to southerly winds. In October, the salinity decrease with a minimum and a maximum subsurface, was caused by water intrusion from the gulf, as the bay is considered an evaporation basin without river discharge with evaporation of 176.16 mm and null precipitation in this month.Original Abstract: Se procesaron mediciones de CTD para analizar la variabilidad termohalina, presencia de masas de agua y circulacion geostrofica durante un periodo de ENSO neutral. La estratificacion y la abrupta termoclina, haloclina y picnoclina en mayo y la escarpada termoclina y picnoclina en julio, fueron generadas por la entrada de agua del golfo, originada en la surgencia costera, producto de los vientos del sur. En octubre, la disminucion de la salinidad con un minimo y un maximo subsuperficial, fue causada por la intrusion de agua del golfo, puesto que la bahia es considerada una cuenca de evaporacion, sin descargas fluviales, con evaporacion de 176,16 mm y precipitacion nula en este mes. La capa de mezcla y la disminucion de la estratificacion en febrero, fue resultado de la homogenizacion y el enfriamiento del agua por los vientos del norte y la menor radiacion solar recibida. |
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ISSN: | 0717-3326 0718-1957 |