Tremors, one of the world’s most dangerous and disastrous natural dangers, express themselves as ground vibrations caused by the rapid release of strain that has accumulated over time. There has been a growth in public understanding about earthquakes, their causes, and mitigations in recent years. Seismic hazard analysis is the process of quantifying an area using topographical and seismological data. In this chapter, we use state-of-the-art, deterministic and probabilistic seismic hazard analysis to assess seismic hazard at the bedrock level in terms of Peak Ground Acceleration (PGA). A thorough database of history and modern seismicity has been assembled within a 300-kilometer radius of the headquarters, and a new seismic tectonic map for the region has been created. Around the district headquarters of Dantewara, 13 faults have been identified as prominent seismic sources on the seismic tectonic map. Make sure the data is complete before beginning a hazard analysis. Finally, earthquake data was statistically analysed, and the seismicity of the region around Dantewara, Chhattisgarh’s district headquarters, was appraised by defining the Gutenberg- Richter recurrence relationship’s ‘a’ and ‘b’ parameters. For the district headquarter Dantewara, PGA values for an M100 earthquake have been estimated. Seismic hazard curves for the study area were developed using liner faults. The projected return period is short for peak ground acceleration values of 0.05g, but it is high for higher PGA(g) values of 0.10g for the research location. The results of the study clearly show that due to fault No. 8, the greatest PGA values for the Dantewara site were reached.
Ashish Kumar Parashar
Department of Civil Engineering SOS, Central University, GGV, Bilaspur, 495009, India.
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