Fine-scale analysis of shelf–slope physiography across the western continental margin of India

We attempt here to quantify and model physiographic features off the central west coast of India in terms of power spectral exponent, amplitude parameter. We demonstrate that statistical analysis of multi-beam echo-sounder grid bathymetry data is able to characterise the outer shelf, upper slope, sh...

Full description

Saved in:
Bibliographic Details
Published in:Geo-marine letters 2006-06, Vol.26 (2), p.114-119
Main Authors: Chakraborty, B, Mukhopadhyay, R, Jauhari, P, Mahale, V, Shashikumar, K, Rajesh, M
Format: Article
Language:English
Subjects:
Bathymetry
Continental crust
Continental margins
Cretaceous
Echosounders
Geological time
Marine
Ocean bottom
Ocean floor
Plate tectonics
Ridges
Statistical analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We attempt here to quantify and model physiographic features off the central west coast of India in terms of power spectral exponent, amplitude parameter. We demonstrate that statistical analysis of multi-beam echo-sounder grid bathymetry data is able to characterise the outer shelf, upper slope, shelf margin basin and several structural rises in the region. A scatter diagram analysis shows that the seafloor data can be grouped into two distinct clusters. Distinctly different clustering patterns are observed over the structural rises, compared to the shelf, slope and basinal areas. This suggests different modes of formation for the members of these two clusters. In fact, the steep structural rises appear to be part of the NW-SE-trending coast-parallel Mid-Shelf Basement and Prathap ridges. These ridges are rift-induced volcanic emplacements on a stretched and thinned continental crust which probably formed during mid-Cretaceous times. [PUBLICATION ABSTRACT]
ISSN:0276-0460
1432-1157
DOI:10.1007/s00367-006-0022-6