1. Seismic Microzonation of Amaravati region: Exploring Geotechnical Data for Site Response Analysis.
- Author
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Ravi, Chandra B., Madhusudhan, Reddy M., Sudharshan, Reddy B., Saikumar, R., and Sarath, Chandra Kumar B.
- Subjects
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EARTHQUAKE hazard analysis , *SOIL liquefaction , *SHEAR waves , *GEOLOGICAL mapping , *SEISMOTECTONICS , *HAZARD mitigation - Abstract
Amravati has been designated as the prospective youthful capital of the Indian state of Andhra Pradesh, nestled in the geologically stable southern peninsular region. Following the impactful Bhuj earthquake on 26 January 2001 measuring 7.6 Mw on the Richter scale, which resulted in substantial destruction, there has been a heightened curiosity in seismic microzonation research throughout India, encompassing Andhra Pradesh. This study is specifically cantered on evaluating the seismic activity and microzonation of Amaravati, employing a multifaceted seismic hazard assessment methodology. The exploration encompasses three distinct phases. Firstly, site characterization involves regional geological, geomorphological, and geotechnical analysis. Secondly, local site effects and resonance frequencies are assessed using DEEPSOIL software, providing amplification factors through a one-dimensional linear approach. In the third stage, liquefaction hazard analysis and liquefaction potential index are evaluated using the simplified procedure suggested by Seed and Idriss. Microzonation results are presented through nine themes: which includes geological mapping, geomorphology, geotechnical observations, shear wave velocity distribution, seismotectonic set-up, rock depth, amplification, peak ground acceleration, and liquefaction susceptibility mapping. The thematic mapping divides the Amaravati region into three zones: susceptible, partially susceptible, and not susceptible. This comprehensive study enhances understanding of seismic hazards in the Amaravati capital region, aiding in informed urban planning and disaster mitigation. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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