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dc.contributor.authorSchwing, F.B.
dc.contributor.authorHusby, D.M.
dc.contributor.authorGarfield, N.
dc.contributor.authorTracy, D.E.
dc.date.accessioned2019-01-24T20:11:49Z
dc.date.available2019-01-24T20:11:49Z
dc.date.issued1991-11-01
dc.identifier.citationJournal Name: California Cooperative Oceanic Fisheries Investigations Reports; (United States); Journal Volume: 32en_US
dc.identifier.otherOSTI ID: 6828506, Legacy ID: OSTI ID: 6828506
dc.identifier.otherNone
dc.identifier.otherJournal ID: CODEN: COFRAS
dc.identifier.other6828506
dc.identifier.urihttps://hdl.handle.net/10945/61027
dc.description.abstractAnalysis of hydrographic data obtained during juvenile groundfish surveys, in relation to local wind forcing and AVHRR sea-surface temperature imagery, reveals that the oceanic region off central California between Point Reyes and Point Sur in spring 1989 was characterized by complex circulation patterns and considerable temporal and mesoscale variability. The 'spring transition' to upwelling-favorable winds is most clearly evidenced by rapid, large decreases in SST (up to 4-5C) measured at four meteorological buoys. Daily-averaged winds are spatially coherent and oscillate between upwelling-favorable and relaxation conditions at 3-10-day intervals. Persistent upwelling centers near Point Reyes and Point Ano Nuevo were characterized by relatively cool, salty (8-10C, 33.6-34.0 psu) water in the upper 50 m, which is derived from offshore water at depths of 50-100 m. Water-mass analysis reveals that upwelled water is advected equatorward from its source. Some upwelled water is transported into shallow coastal areas and warmed. Alongshelf fronts between relatively warm, low-salinity ([gt]13C, [lt]33.5 psu) offshore water and cool, higher-salinity upwelled water are advected onshore in response to wind relaxation or reversal events: frontal gradients intensify at these times. AVHRR imagery verifies the spatial patterns and complex mesoscale variability of the near-surface patterns observed in the CTD survey data. Eddylike hydrographic features are noted with horizontal scales on the order of the station spacing (10 km). How the complex circulation patterns and intense mesoscale spatial and temporal variability affect the survival and subsequent recruitment of juvenile groundfish is discussed.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject54 ENVIRONMENTAL SCIENCESen_US
dc.subjectPACIFIC OCEANen_US
dc.subjectOCEANOGRAPHYen_US
dc.subjectAMBIENT TEMPERATUREen_US
dc.subjectCALIFORNIAen_US
dc.subjectCOASTAL REGIONSen_US
dc.subjectECOLOGYen_US
dc.subjectFISHESen_US
dc.subjectOCEANIC CIRCULATIONen_US
dc.subjectREMOTE SENSINGen_US
dc.subjectSALINITYen_US
dc.subjectTEMPERATURE MEASUREMENTen_US
dc.subjectUPWELLINGen_US
dc.subjectWATER CURRENTSen_US
dc.subjectWINDen_US
dc.subjectANIMALSen_US
dc.subjectAQUATIC ORGANISMSen_US
dc.subjectCURRENTSen_US
dc.subjectDEVELOPED COUNTRIESen_US
dc.subjectNORTH AMERICAen_US
dc.subjectSEASen_US
dc.subjectSURFACE WATERSen_US
dc.subjectUSAen_US
dc.subjectVERTEBRATES 540310* -- Environment, Aquatic-- Basic Studies-- (1990-)en_US
dc.titleMesoscale oceanic response to wind events off central California in spring 1989: CTD surveys and AVHRR imagery. [Conductivity/temperature/depth surveys; Selected Advanced Very High Resolution Radiometer satellite imaging]en_US
dc.typeArticleen_US
dc.contributor.corporateNone
dc.description.funderNone


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