81 mild tremors in one month: GSDMA asks people to remain alert

Ahmedabad: Gujarat State Disaster Management Authority (GSDMA) today asked the people to remain alert but not to panic following a series of tremors in Porbandar and Jamanagar districts of the state measuring upto 3 on the Richter scale over the last one month.

The region experienced 81 moderate to medium intensity earthquakes in the last one month, with the epicentre of most of them being at Lalpur and Bhanwad talukas, an official statement said.

An earthquake measuring 3 on the Richter scale was felt on September 23 in Advana, Bhumiavadar, Sodhana and Majivana talukas, which was the severest so far, GSDMA said.

Following, the spate of earthquakes, the officials of Institute of Seismological Research(ISR) toured the two districts recently and installed a strong motion oscillograph for finer observations, it stated.

According to ISR, heavy rainfall often results in aftershocks with the rise in the underground water table.

The geophysicists and hydrologists of the institute are of the view that the number of tremors have increased as sub-surface water level has gone up by 30 metres due to heavy rains this monsoon, the statement said.

The state had faced a similar situation during 2006 and 2007 when the intensity of tremors went upto 3 on the Richter scale, it stated.