Micro-Seismic Observation Systems

Microseismic monitoring is a method of monitoring and analyzing the fracture geometry, reservoir fluid migration, and reservoir structure by using weak seismic waves induced by subsurface stress changes and rock fractures associated with engineering operations such as hydraulic fracturing, oil and gas extraction, and geotechnical operations. The Centre on Tuesday announced that it will install micro seismic observation systems at Joshimath, a gradually sinking Himalayan town in Uttarakhand.

Installation of Micro Seismic Observation Systems

  • Earth Sciences Minister Jitendra Singh made the announcement at the India-U.K. Workshop of Geosciences and said the observation systems will be in place by Wednesday.
  • Addressing the workshop, he said there was a critical need for fundamental research on the physical processes that lead to the failure of the brittle layers beneath the crust and sub-crust. The Minister noted that human consequences of natural disasters in India were rising rapidly and stressed the need to devise proper mitigation strategies.

Seismological Centers and Data Monitoring

  • Singh said the Ministry of Earth Sciences had established 37 new seismological centers in the last two years for extensive observation facilities, generating a huge database for outcome-oriented analytics.
  • He said in the next five years, 100 more such seismological centers will be opened across the country for improving real-time data monitoring and data collection. Officials said a seismic microzonation study for the area would generate risk resilient parameters for safer dwelling and infrastructure.

Seismic Hazard Zone and Factors

  • They said Joshimath falls under the highest seismic hazard Zone V as it experiences continuous seismogenic stresses. Seismic energy generation due to micro-earthquakes may have weakened the strength of the rocks as Joshimath is located in the earthquake rupture zone of the 1999 Chamoli earthquake.
  • Climatic factors such as excessive precipitation and the flow of water from mountains into massive cracks and fractures in the sub-surface rocks lead to the widening of cracks and hastening the slip in rock material.

International Collaboration and Mitigation Strategies

  • Addressing the workshop, Mr. Singh said scientific understanding of the processes behind disasters has grown immensely over the past 50 years, and there is a need for strengthening further international collaborations like the Indo-U.K. initiative to fight such disasters.
  • He also added that scientific understanding of the processes behind disasters has grown immensely over the past 50 years, and there was a need for strengthening further international collaborations like the Indo-U.K. initiative to fight such disasters in future.
  • The two-day workshop was attended by British High Commissioner Alex Ellis; Wendy Matcham, Head, Natural Environment Research Council (NERC), U.K. Research and Innovation (UKRI); O.P. Mishra, Director, National Centre for Seismology and Sukanya Kumar, Acting Director, U.K. Research and Innovation India.

The Centre has announced that it will install micro seismic observation systems at Joshimath, a gradually sinking Himalayan town in Uttarakhand. Earth Sciences Minister Jitendra Singh made the announcement at the India-U.K. Workshop of Geosciences and said the observation systems will be in place by Wednesday. The Ministry of Earth Sciences has established 37 new seismological centers in the last two years for extensive observation facilities, generating a huge database for outcome-oriented analytics. In the next five years, 100 more such seismological centers will be opened across the country for improving real-time data monitoring and data collection. The Microseismic monitoring technique will help in monitoring and analyzing the fracture geometry, reservoir fluid migration, and reservoir structure by using weak seismic waves.

Written by IAS POINT

No comments yet.

Leave a Reply