Geological Survey
of India (GSI) of the Ministry of Mines has updated its all
India earthquake data base and a total of 16,136 events have
been registered. Active fault zones have been delineated in
two selected sectors of the eastern Himalayan foreland using
multi-sensor image fusion.
GSI, Indian
Meteorological Department (IMD), National Geophysical Research
Institute (NGRI) and Central Building Research Institute (CBRI)
joined in a DST-sponsored seismic hazard and risk micro-zonation
(SHRM) survey of Jabalpur area to provide input to Indo-Italian
collaborative research work on SHRM. The second level seismic
hazard micro-zonation map of Jabalpur has been prepared. The
broad band seismic observatory of GSI at Jabalpur with the installation
of the GPS system by Geodetic and Research Branch, Survey of
India, Dehradun is operational and data are being submitted
on monthly basis to Survey of India, Deharadun since September
2002.
The preparation
of a document on seismic micro-zonation of Guwahati urban complex
has been taken up at the behest of Government of Assam. Compilation
of seismotectonic map of an area of 400 sq. km on 1:250,000
have been completed. GSI has generated data on glacier balance,
flow hydrometric and secular movement of the Himalayan Glacier
since 1978. It has also carried out recession studies of 30
glaciers and observed that almost all glaciers are passing through
a phase of recession.
