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Influence of sedimentation on the geomorphology of the northwestern continental margin of India

DRS at CSIR-National Institute of Oceanography

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Title Influence of sedimentation on the geomorphology of the northwestern continental margin of India
 
Creator Chauhan, O.S.
Almeida, F.
Suneethi, J.
 
Subject sedimentation
geomorphology
continental margins
echosounding
bathymetric data
continental slope
 
Description Based upon the analysis of about 10,000 line km of echosounding and bathymetric data and variations in mass accumulation rate along the NW continental margin of India (between Kori creek and Mumbai), which has deduced in the northern region (in the vicinity of the River Indus) the shelf-break occurs at a shallower depth and the slope is shallower, has the steepest gradient (less than 1:20), is smoother with no major features, and has reduced width (slope edge at 1450 m; width 19 km than off Mumbai). The width and depth of the slope edge gradually increases southwards, and is at maximum off Daman-Mumbai (slope, edge depth 2900 m; width 84 km). The intensity of the occurrence of physiographic features also increases southwards. The shelf edge off Saurashtra is undulating and on the slope, regional notches and benches (the most prominent at 560 m) are observed. Further southwards off Khambhat-Mumbai, the slope is characterized by the presence of bathymetric highs and lows. It is also observed that the numerous features on the shelf, with a variable depth of the shelf-break. The gradient of the continental slope is also reduced from the northern region to the southern region. The variations in the gradient of the slope and the presence of distinct physiographic features in this area are examined vis-a-vis fluvial supply of the sediments into the region
 
Date 2009-01-09T08:20:12Z
2009-01-09T08:20:12Z
2000
 
Type Journal Article
 
Identifier Marine Geodesy, Vol.23; 259-265p.
http://drs.nio.org/drs/handle/2264/1671
 
Language en
 
Rights Copyright [2000]. 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