Tidal and Residual Circulation in the Gulf of Khambhat and its Surrounding on the West Coast of India

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• 作者：R. K. Nayak ; M. Salim ; D. Mitra…
• 关键词：Tide ; Residual circulation ; Continental shelf circulation ; Coastal circulation ; Tides ; Coastally trapped waves ; West coast of Indian
• 刊名：Journal of the Indian Society of Remote Sensing
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：43
• 期：1
• 页码：151-162
• 全文大小：2,283 KB
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• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geosciences
  Remote Sensing and Photogrammetry
  
• 出版者：Springer India
• ISSN：0974-3006

文摘

A terrain-following ocean model is implemented for simulating three-dimensional tidal and residual circulations in the Gulf of Khambhat and its adjacent oceans on the west coast of India. The model is forced with time varying tidal levels and momentum fluxes at the western and southern boundaries. Simulated tidal levels and currents compare well with the observation at tide gauge and current-meter stations. Estimated residual circulation in the region has several notable features that include strong southward along channel flow inside the gulf, northwestward propagating coastal boundary jet currents parallel the 60?m isobaths, southward slope currents, alongshore coastal currents on the southeastern flank of the shelf and a number of meso-scale eddies. All these features of residual circulation are captured well by the satellite imagery of Chlorophyll concentration mapped in the month of March, the period when tide plays dominant role on the control of net circulation in the region.