Open AccessSEISMIC HAZARD ASSESSMENT OF UTTAR PRADESH LOCAL AND ACTIVE SEISMIC GAPS
Author(s) -
Aayush Kumar
Publication year - 2020
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2020.v04i12.064
Subject(s) - uttar pradesh , seismic hazard , earthquake scenario , seismology , hazard , geology , forensic engineering , socioeconomics , engineering , biology , sociology , ecology
The Himalayas are the one of the most active seismic regions over in wide world. From where some of the devastating earthquake were originated; Bihar Nepal 1803, shilling 1897, Kangra 1905, Bihar Nepal 1934, Assam 1950, Sikkim 2011, Nepal Earthquake 2015 and last earthquake in Uttar Pradesh was October 18 2007 in Gautam Buddha Nagar. Many of the research Analyser highlighted the central Seismic Gap based on the stress accumulation in the central region of the Himalaya, The regions which were situated adjacent to the active Himalayan regions having large possibility of seismic hazard. In this study, there is an assessment of spectral acceleration of Uttar Pradesh which were based upon the Probabilistic Seismic Hazard Analysis (PSHA). In past few Decades the population of the Uttar Pradesh is drastically increased is Approximately 16,61,98000 According to 2001 census. The comprehensive earthquake catalogue were compiled from various sources for region 23°52’ N and 30° 25’ N latitudes and 77°.3’ and 84°.39’E longitude that comprises the historic and prehistoric events. The seismic parameter has been estimated with the use of past data of control regions A seismic hazard map of Uttar Pradesh has been developed considering the region-specific seismotectonic parameters with a radius of 500 km by probabilistic approaches. The updated maximum probable earthquake magnitude (M max) for each seismic sources has been done by considering the regional rupture characteristic method and compared with the maximum magnitude observed. (Mobs max), Mobs max + 0.5 and Kijo Method. The best suitable Ground motion prediction equations (GMPE) were selected from 27 applicable GMPE’s based on the ‘Efficacy Test’. Wherever, Maximum expected magnitude (Mmax) low seismicity area like Uttar Pradesh based on Gutenberg-Richter Relationship. The recurrence relationship has been obtained using Guttenberg-Richter (G-R) relationship. The probabilistic seismic hazard analysis were then carried out considering well known seismogenic sources of Uttar Pradesh. The result of above investigation presented In the form of Peak Ground Acceleration ‘PGA’ and response Spectra.