Vertical propagation of baroclinic Kelvin waves along the west coast of India |
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Authors: | D Nethery D Shankar |
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Institution: | (1) National Institute of Oceanography, Goa, 403 004, India;(2) Ecole Normale Supérieure, Paris, France |
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Abstract: | A linear, continuously stratified ocean model is used to investigate vertical propagation of remotely forced, baroclinic Kelvin
waves along the Indian west coast. The extent of vertical propagation over the length of the coast is found to be an increasing
function of the forcing frequency. Simulations show that, over the length of the Indian west coast, vertical propagation is
limited at annual and semi-annual periods, but significant at periods shorter than about 120 days. This has two major consequences.
First, the depth of subsurface currents associated with these frequencies varies substantially along the coast. Second, baroclinic
Kelvin waves generated in the Bay of Bengal at periods shorter than about 120 days have negligible influence on surface currents
along the north Indian west coast. |
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Keywords: | Arabian Sea Indian Ocean west India coastal current monsoon current equatorial oceanography remote forcing modelling monsoons oceanography |
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