Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
ISSN-L : 1883-8944
Paper
HIGH RESOLUTION OBSERVATIONS OF COMPLICATED STRATIFICATION AND MIXING STRUCTURES GENERATED BY COASTAL TOPOGRAPHY AND WIND STRESS
Eiji MASUNAGADaiki ASAOKAShunsuke KOMUROShunichi MATSUMOTOMasato ONOHiroaki BANBA
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2019 Volume 75 Issue 2 Pages I_217-I_222

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Abstract

 This study investigates stratification and mixing structures caused by effects of winds and coastal topography by making use of high resolution observed data from the YODA Profiler. Observed data show small scale complicated temperature (density) distributions and baroclinic internal waves generated by wind forcing. The Wedderburn number with a two layer assumption well explains baroclinic and mixing structures along the wind direction. On the other hand, bay and cape shaped topographies cause spatial variations of the wind forcing input, which results in wavy baroclinic strucrures across the wind direction. The observed barolinic and mixing structures directly influence distributions of the phytoplankton and oxygen concentration. This implies that small scale baroclinic structures are key to understand harmuful algae blooms and hypxoa in coastal regions.

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© 2019 by Japan Society of Civil Engineers
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