Scientists expressed the fear of a big earthquake in Uttarakhand

Scientists from Wadia Institute of Himalayan Geology have found out the reasons for the frequent earthquake tremors in the Kali Ganga valley bordering Nepal

Scientists expressed the fear of a big earthquake in Uttarakhand

Scientists from Wadia Institute of Himalayan Geology have found out the reasons for the frequent earthquake tremors in the Kali Ganga valley bordering Nepal. Along with this, scientists have expressed the possibility of a big earthquake in the area. Scientists say that a geological structure has been detected under the Dharchula region, which is responsible for the frequent earthquake tremors in this area.

This research of Wadia scientists has been published in 'Geophysical Journal International' and Tectonophysics Journal in May 2021. Research has said that the crust in the Kumaon Himalaya is about 38-42 km thick as compared to the Northwest Himalaya. This crust is responsible for the earthquakes of micro and medium intensity in this region. A team led by Dr. Devjit Hazarika, scientist from Wadia Institute of Himalayan Geology, Dehradun, established 15 seismic stations on the banks of the Kali river and studied them for three years to find out the causes of earthquakes in the vicinity of Dharchula and Kumaon Himalayas. If an earthquake strikes this region, a population of at least one lakh would be affected. Along with this, it will also affect the neighboring country Nepal.

Thirty earthquakes in Dharchula in three years

Scientists have recorded more than thirty earthquakes of magnitude 4.4 in the Dharchula region in the last three years. There were many earthquakes less than this which do not fall in the recorded category. Dharchula was hit by an earthquake of magnitude 5.2 on 1 December 2016. Apart from this, an earthquake of 5.5 magnitudes was also recorded on 6 February 2017. Its center was Rudraprayag.

Scientists warns

Scientists say that after the Kangra (1905) and Bihar-Nepal (1934) earthquakes, there have been no earthquakes of more than 8.0 in the region which is a warning of major earthquakes in the Himalayas in the future.

Date                               Intensity                Earthquake epicenter

28 October 1916              7.5                           Dharchula-Bajang
28 December 1958          7.5                           Dharchula-Bajang
05 March 1935                 6.0                           Dharchula-Bajang
24 December 1961          5.7                           Dharchula-Bajang
26 September 1964         5.8                           Dharchula-Bajang
27 June 1966                   6.0                           Dharchula-Bajang
27 July 1966                    6.3                           Kapkot-Dharchula
24 August 1968               7.0                           Dharchula-Bajang
29 July 1980                    6.5                           Indo-Nepal Border
05 August 2006               5.4                           Indo-Nepal border

(Source: Himalayas in crisis, Author: Khadg Singh Valdia)

A  tensed ramp in Dharchula and the surrounding area puts pressure on the weakened Indian plate. This ramp is below Dharchula area. We are continuously monitoring to gather more information on the earthquake in Kali river valley.