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Surface circulation off Somalia and western equatorial Indian Ocean during summer monsoon of 1988 from Geosat altimeter data

DRS at CSIR-National Institute of Oceanography

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Title Surface circulation off Somalia and western equatorial Indian Ocean during summer monsoon of 1988 from Geosat altimeter data
 
Creator Subrahmanyam, B.
RameshBabu, V.
Murty, V.S.N.
Rao, L.V.G.
 
Subject surface circulation
monsoons
sea level variations
upwelling
oceanic eddies
 
Description The sea level variability derived from repeating tracks of the Geosat altimeter data during the late phase (August-September) of the summer monsoon of 1988 revealed the presence of multiple meso-scale eddy features with clockwise and anti-clockwise rotation. During August, the prime eddy or the Great Whirl centred at 9.5 degrees N, 53.5 degrees E off northern Somalia and the southern gyre centred at 3 degrees N, 51.5 degrees E off southern Somalia, both are clearly identified with clockwise rotation. The region of lower sea levels off the central Somalia Coast (between 6 degrees N and 9 degrees N) coincides with the cold water wedge formed by the offshore movement of the cold upwelled waters from the Somalia Coast during the summer monsoon. By September the southern gyre weakens, while the prime eddy persists. The surface circulation is characterized by nearly meridional flows in the equatorial region. A strong narrow (~100 km) southward jet-like flow is noticed south of 7 degrees N between 53 degrees and 54 degrees E during September. In general, these circulation features are in agreement with the sea surface topography derived from the hydrographic data collected in this region during the same period on board the ORV Sagar Kanya
 
Date 2009-01-21T11:25:30Z
2009-01-21T11:25:30Z
1996
 
Type Journal Article
 
Identifier International Journal of Remote Sensing, Vol.17; 761-770p.
http://drs.nio.org/drs/handle/2264/2279
 
Language en
 
Rights Copyright [1996]. 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.
 
Publisher Taylor and Francis