Seismic Zonation and Microzonation studies in the India Subcontinent
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
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| Title |
Seismic Zonation and Microzonation studies in the India Subcontinent
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| Creator |
Parvez, Imtiyaz A
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| Subject |
Computational Seismology
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| Description |
Earthquakes constitute among the most feared natural hazards and these occur with no warning which can result in great destruction and loss of lives, particularly in developing countries. One way to mitigate the destructive impact of such earthquakes is to conduct a seismic hazard assessment and take remedial measures. This paper aims at demonstrating significant contributions in the field of seismic zonation and microzonation studies in the Indian subcontinent. The contributions in the field of earthquake hazard have been very valuable and beneficial not only for science but also for society. The historical seismicity and seismic zonations studies as well as the present scenario of seismic hazard assessment in the Indian Subcontinent, whether through probabilistic or deterministic approaches is discussed. Using the deterministic approach, it is found that many parts of the Himalayan region have peak acceleration values exceeding 0.6 g. The epicentral areas of the great Assam earthquakes of 1897 and 1950 in northeast India represent the maximum hazard with acceleration values reaching 1.2-1.3 g. The peak velocity and displacement in the same region is estimated as 120-177 cm s-1 and 60-90 cm, respectively. To mitigate seismic risk, it is necessary to define a correct response in terms of both peak ground acceleration and spectral amplification. These factors are highly dependent on local soil conditions and on the source characteristics of the expected earthquakes. This paper will also present the findings of site specific hazard assessment in megacities like Delhi, Ahmadabad and Bangalore. A false site effect study of Anjar city is also presented.
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| Publisher |
3rd International Earthquake Symposium
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| Date |
2010-03-05
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| Type |
Book
PeerReviewed |
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| Identifier |
Parvez, Imtiyaz A (2010) Seismic Zonation and Microzonation studies in the India Subcontinent. Proceedings, 3rd International Earthquake Symposium, Bangladesh, Dhaka, March.5-6 2010 . 3rd International Earthquake Symposium, Bangladesh, Dhaka.
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| Relation |
http://cir.cmmacs.ernet.in/172/
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