Details:

Journal Title:
Geophysical Research Letters
Personal Author:
Gilcoto, Miguel ; Largier, John L. ; Barton, Eric D. ; Piedracoba, Silvia ; Torres, Ricardo ; ... More +
Gilcoto, Miguel ; Largier, John L. ; Barton, Eric D. ; Piedracoba, Silvia ; Torres, Ricardo ; Graña, Rocío ; Alonso‐Pérez, Fernando ; Villacieros‐Robineau, Nicolás ; Granda, Francisco Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; Sea Grant
OAR (Oceanic and Atmospheric Research) ; Sea Grant Less -
Sea Grant Program:
CASG/CUIMR (California Sea Grant)
Description:
Bays/estuaries forced by local wind show bidirectional exchange flow. When forced by remote wind, they exhibit unidirectional flow adjustment to coastal sea level. Acoustic Doppler Current Profiler observations over 1 year show that the Ria de Vigo (Iberian Upwelling) responds to coastal wind events with bidirectional exchange flow. The duration of the upwelling and downwelling events, estimated from the current variability, was ~3.3 days and ~2.6 days, respectively. Vectorial correlations reveal a rapid response to upwelling/downwelling, in which currents lag local wind by <6 h and remote wind by <14 h, less than the Ekman spinup (17.8 h). This rapidity arises from the ria's narrowness (nonrotational local response), equatorward orientation (additive remote and local wind responses), depth greater than the Ekman depth (penetration of shelf circulation into the interior), and vertical stratification (shear reinforcing shelf circulation). Similar rapid responses are expected in other narrow bays where local and remote winds act together and stratification enhances bidirectional flow.
Keywords:
[+]
Estuaries Winds Coastal upwelling
Source:
Geophysical Research Letters 44(5): 2388-2397, 2016
DOI:
https://doi.org/10.1002/2016GL072416
Sea Grant Document Number:
CASG-R-17-011
Document Type:
Journal article
Rights Information:
Other
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:780e7bd9e9312ef45c23b8688d66e4a4f0e45d0c58548c067368a566f18a5acd
Download URL:
https://repository.library.noaa.gov/view/noaa/43810/noaa_43810_DS1.pdf
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