HIGH RESOLUTION OBSERVATIONS OF COMPLICATED STRATIFICATION AND MIXING STRUCTURES GENERATED BY COASTAL TOPOGRAPHY AND WIND STRESS

• MASUNAGA Eiji

  茨城大学 広域水圏環境科学教育研究センター

• ASAOKA Daiki

  茨城大学大学院理工学研究科都市システム工学専攻

• KOMURO Shunsuke

  茨城県霞ケ浦環境科学センター

• MATSUMOTO Shunichi

  茨城県県西県民センター

• ONO Masato

  国土交通省関東地方整備局利根川下流河川事務所

• BANBA Hiroaki

  国土交通省関東地方整備局霞ヶ浦河川事務所

Bibliographic Information

Other Title

• 沿岸地形と風応力が形成する複雑な密度構造と混合状態の高精度計測

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.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75 (2), I_217-I_222, 2019

  Japan Society of Civil Engineers

Keywords

• mixing
• baroclinic structure
• wind stress
• internal waves
• Kasumigaura

Details

• CRID: 1390564227323412992
• NII Article ID: 130007730172
• DOI: 10.2208/kaigan.75.i_217
• ISSN: 18838944
• ISSN: 18842399
• Web Site: https://www.jstage.jst.go.jp/article/kaigan/75/2/75_I_217/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed