West India coastal current and Lakshadweep High/Low
DRS at CSIR-National Institute of Oceanography
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Title |
West India coastal current and Lakshadweep High/Low
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Creator |
Shetye, S.R.
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Subject |
nearshore currents
coastal oceanography surface circulation wind-driven circulation planetary waves kelvin waves |
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Description |
The West India Coastal Current (WICC) flows northward during November-February and southward during April-September. At the time of formation of the northward (southward) phase of the current, a high (low) in sea level - the Lakshadweep High (Low), forms off southwestern India, and migrates westward across the Arabian Sea. The annual cycle of the WICC and that of the Lakshadweep High/Low arise from a set of circumstances that are special to the North India Ocean. This relatively small tropical basin is driven by seasonal monsoon winds. As a result, its wind-dirven near-surface circulation consists primarily of annual and semi-annual long, equatorially-trapped Kelvin and Rossby waves, and coastally-trapped Kelvin waves. In terms of these waves, the West India Coastal Current is a superposition of annual and semiannual coastally-trapped Kelvin waves. The Lakshadweep High/Low forms when the Kelvin waves, on turning around Sri Lanka, and propagating northward along the west coast of India, radiate Rossby waves.
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Date |
2009-01-11T12:08:57Z
2009-01-11T12:08:57Z 1998 |
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Type |
Journal Article
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Identifier |
Sadhana, Vol.23; 637-651p.
http://drs.nio.org/drs/handle/2264/1957 |
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Language |
en
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Rights |
Copyright [1998]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
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Publisher |
Indian Academy of Sciences, Bangalore, India
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