Marine Gravity Survey

Marine gravity survey:

From the instantaneous sea surface height as obtained from the Satellite altimeter over any study area, marine gravity survey can be done using "Satellite Gravity Method".

Satellite gravity survey:

Gravity anomaly map at 5mGal contour interval from GRACE satellite over Gujarat region is shown below.

Bouguer anomaly map of gujarat at 5mGal contour intervat:Source-NGRI, Hyderabad

Gravity Data reduction


  • ISR has started geophysical surveys for Geothermal Energy in Gujarat state. ISR has pioneered a technique of 3D MT imaging of crust. Geological faults and crustal structure have been mapped in Kachchh.
  • ISR is carrying out Multiparametric Geophysical and Geochemical studies in Kachchh for earthquake prediction research.
  • ISR has upgraded Gujarat State Seismic Network from 19 online seismic stations to 40.