High resolution satellite gravity over a part of the Sir Creek offshore on west northwest margin of the Indian subcontinent

Abstract

Satellite altimetry has been used to delineate subsurface geological structures analogous to gravity anomaly maps generated through ship-borne survey. In this study, free-air gravity image has been generated over the Sir Creek offshore region on west northwest margin of the Indian subcontinent, using very high resolution data base as generated from Geosat GM, ERS-1, Seasat and TOPEX/POSEIDON altimeter data and ETOPO -1 (1’ resolution) bathymetry data superimposed over the gravity data. The high resolution gravity data has been found most suitable for exploration in the offshore region and for lithospheric studies. Moreover, continental shelf and slope regions could be identified alongwith bathymetry data.