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Small scale features of sound velocity structure in the northern Arabian sea during February - May 1974

DRS at CSIR-National Institute of Oceanography

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Title Small scale features of sound velocity structure in the northern Arabian sea during February - May 1974
 
Creator Somayajulu, Y.K.
Rao, L.V.G.
Varadachari, V.V.R.
 
Subject Underwater Acoustics
saline water
seasonal thermocline
seasonal variations
sound velocity
microstructure
ISW, Arabian Sea
 
Description Microstructure of sound velocity in the upper 500 m of the northern Arabian Sea based on STD (salinity-temperature-depth profiler) data is presented. Relatively warm and saline waters of the Persian Gulf intruding into the Arabian Sea at intermediate depths (200-400 m), influence the sound velocity structure and cause formation of an upper sound channel in the northern Arabian Sea. The Persian Gulf waters spread as tongues at 1 or 2 more levels (up to a limited extent), besides the prominent one characterised by temperature inversion and salinity maximum, causing significant perturbations in sound velocity. As the distance from the source region increases, the Persian Gulf water loses its identity and does not affect the sound velocity structure. In the upper 50 m, the sound velocity structure changes significantly from spring to summer during which period a seasonal thermocline forms due to intense surface heating. The studies indicate a seasonal variation in the flow paths of the Persian Gulf water and consequent changes in the sound velocity structure
 
Date 1995-05-01T09:57:11Z
2017-09-29T13:48:51Z
1995-05-01T09:57:11Z
2017-09-29T13:48:51Z
1980
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, vol.9; 1980; 141-147
0379-5136
http://drs.nio.org/drs/handle/2264/6872
 
Language en
 
Relation Indian J Mar Sci
SCI
 
Publisher CSIR-NISCAIR