Location
San Diego, California
Presentation Date
28 May 2010, 8:00 am - 8:30 am
Abstract
This paper presents an overview of the principles and practices of seismic microzonation with some case studies in India. India has experienced major damages and loss of life due to earthquakes. Macrozonation map in Indian seismic code IS-1893 is frequently revised soon after a major earthquake in the country. New revision which was published in 2002 after Bhuj earthquake in 2001 contains four macro zones. These zones are based on geology and limited seismology input without considering geotechnical aspects such as site effects and liquefaction. In order to understand the earthquake vulnerability of major urban centers and prepare new zonation map, the Govt. of India has initiated microzonation of 63 cities in India after 2001 earthquake. Many microzonation studies are under progress and few of them have been completed. This paper presents an overview of these studies. Seismic microzonation of Jabalpur urban area is the first work in India towards seismic microzonation of Indian cities. Jabalpur study has provided many learning lessons to other studies. Preliminary microzonation of Delhi has been completed and detailed one is under progress. Seismic Hazard and Microzonation Atlas of the Sikkim Himalaya has been published with geological and seismological background. Microzonation of Guwahati was done based on geology, geomorphology, seismotectonics, soil characteristics, pre-dominant frequencies, peak ground acceleration, seismic hazard and demography. Seismic Microzonation of Dehradun has been prepared based on shear wave velocity with site response. First order Microzonation of Haldia has been developed based on peak ground acceleration, predominant frequency and elevation map. Different maps and results were presented for Gujarat microzonation based on noise survey and after shock data. None of these studies included the geotechnical aspects. The geotechnical aspects were fully incorporated in the recently completed Microzonation work of Bangalore and the ongoing study of Chennai microzonation. An overview of seismic microzonation studies in India is presented in this paper.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
5th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2010 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Sitharam, T. G.; Anbazhagan, P.; and Vipin, K. S., "Principles and Practices of Seismic Microzonation: Case Studies in India" (2010). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 7.
https://scholarsmine.mst.edu/icrageesd/05icrageesd/session12/7
Included in
Principles and Practices of Seismic Microzonation: Case Studies in India
San Diego, California
This paper presents an overview of the principles and practices of seismic microzonation with some case studies in India. India has experienced major damages and loss of life due to earthquakes. Macrozonation map in Indian seismic code IS-1893 is frequently revised soon after a major earthquake in the country. New revision which was published in 2002 after Bhuj earthquake in 2001 contains four macro zones. These zones are based on geology and limited seismology input without considering geotechnical aspects such as site effects and liquefaction. In order to understand the earthquake vulnerability of major urban centers and prepare new zonation map, the Govt. of India has initiated microzonation of 63 cities in India after 2001 earthquake. Many microzonation studies are under progress and few of them have been completed. This paper presents an overview of these studies. Seismic microzonation of Jabalpur urban area is the first work in India towards seismic microzonation of Indian cities. Jabalpur study has provided many learning lessons to other studies. Preliminary microzonation of Delhi has been completed and detailed one is under progress. Seismic Hazard and Microzonation Atlas of the Sikkim Himalaya has been published with geological and seismological background. Microzonation of Guwahati was done based on geology, geomorphology, seismotectonics, soil characteristics, pre-dominant frequencies, peak ground acceleration, seismic hazard and demography. Seismic Microzonation of Dehradun has been prepared based on shear wave velocity with site response. First order Microzonation of Haldia has been developed based on peak ground acceleration, predominant frequency and elevation map. Different maps and results were presented for Gujarat microzonation based on noise survey and after shock data. None of these studies included the geotechnical aspects. The geotechnical aspects were fully incorporated in the recently completed Microzonation work of Bangalore and the ongoing study of Chennai microzonation. An overview of seismic microzonation studies in India is presented in this paper.
