Record Details

Sonograph patterns of the central western continental shelf of India

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Sonograph patterns of the central western continental shelf of India
 
Creator Rao, P.S.
 
Subject Geology and Geophysics
grain size
topography
sonographs
continental ridges
maps
seafloor mapping
side scan sonar
sediment texture
continental shelves
bathymetry
ISW, India
 
Description Side scan sonar and bathymetric surveys were conducted on the central western continental shelf of India. The sonographs portray a smooth, relatively featureless inner shelf, up to a depth less than 40-50 m, which is covered with fine grained sediments. The sonographs of the outer shelf, from beyond 60 m depth, to the shelf edge, exhibit bedforms such as reef outcrops (algal and oolitic ridges) and minor topographic undulations. Towards the shelf edge these give way to isolated colonies of algal knolls. A transition zone with tonal variations is present between 40 and 60 m water depth. Ground-truth data sediment and rock distribution maps indicate depositional (inner shelf), nondepositional or erosional (outer shelf) environments and a combination of both in the transition zone. These match well with the sonographs
 
Date 1995-06-24T10:01:50Z
2017-09-30T01:30:00Z
1995-06-24T10:01:50Z
2017-09-30T01:30:00Z
1989
 
Type Journal Article
 
Identifier Journal of Coastal Research, vol.5(4); 1989; 725-736
0749-0208
http://drs.nio.org/drs/handle/2264/7291
 
Language en
 
Relation J Coastal Res
SCI
 
Publisher Tirunelveli: JCSONLINE