Analysis of local seismic events and inferred P* velocity near Koyna Dam, Maharashtra, India

Abstract

Koyna region in Maharashtra, India got its place in the seismicity map of the world when a major shock occurred in this area on December 10, 1967. The seismic tremors were being monitored in this region with the seismological network operated by Central Water Power research Station (CWPRS), Poona since 1963. Four local seismological stations i.e. Koyna (KN), Satara (STA), Mahabaleshwar (MAH) and Poona (POO) were used as an array keeping KNI as crossover point. About 200 local events, which have occurred in this region and were recorded during the period 1967-1973, have been processed and analyzed using a least squares technique.