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Seismic Hazard Assessment of Dehradun City

Tinku Biswas, Neeraj Kumar, Sonam Kumari

Abstract


Seismic hazard assessment refers to an estimation of ground motion parameters at any site or region. In the present study seismic hazard assessment is performed for the Dehradun city which lies in a highly seismic region in the Himalayan foothills. Based on the seismicity data provided by IMD, New Delhi and Seismotectonic Atlas of India (GSI, 2000), seismicity was described and 24 seismotectonic sources were identified in the study area. Assuming one third of the total fault length as rupture length for MCE, maximum magnitude to each source was assigned. After the estimation of distance of zone of energy release two different attenuation models were used to define peak horizontal acceleration based on shortest distance between sites and respective seismotectonic sources. The seismic hazard in terms of peak horizontal acceleration was estimated to be 0.334 g using attenuation model by Sharma (2000) and 0.475 g using attenuation model by Abrahamson and Lithehiser (1989). The computed peak horizontal acceleration in the present study is in confirmation with the observed values of Uttarkashi and Chamoli earthquakes and is also comparable to values reported in other studies.

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References


N.A. Abrahamson, J.J. Lithehiser. Attenuation of vertical peak acceleration, Bull Seismol Soc Am. 1989; 79(3): 549–67p.

K.W. Campbell. Strong-motion relations, International Handbook of Earthquake & Engineering Seismology. Academic Press; 2003, 1003–30p.

R. Das, H.R. Wason, M.L. Sharma. Magnitude conversion to unified moment magnitude using orthogonal regression relation, J Asian Earth Sci. 2012; (50): 44–51p.

A. Gansser. Geology of the Himalaya. London: Interscience Publishers; 1964, 289p.

S. Gupta, S. Kumar, H.R. Wason, R. Das. A statistical analysis of completeness of earthquake data around Dehradun city and its implications for seismicity evaluation, In: Proceedings of fifteen World Conference on Earthquake Engineering. LISBOA, 2012.

GSI. (2000). “Seismotectonic Atlas of India and Its Environs”. Geological Survey of india.

IS-1893 (Part1): Indian Standard Criteria for Earthquake Resistant Design of Structures. 5th Revision. Bureau of Indian Standard, New Delhi, 2002.

S.L. Kramer. Geotechnical Earthquake Engineering. Prentice Hall International Series, Pearson Education, Inc, Low Price Edition, Delhi, 2009.

P. Kumar. Seismic hazard assessment of Uttarakhand, MTech Dissertation. Department of Earthquake Engineering, Indian Institute of Technology, Roorkee, 2009.

D.H. Lang, Y. Singh, J.S.R. Prasad. Comparing empirical and analytical estimates of earthquake loss assessment studies for the city of Dehradun, India, Earthquake Spectra. 2012; 28(2); 595–619p.

R.K. Mark. Application of linear statistical models of earthquake magnitude versus fault length in estimating maximum xpectable earthquakes, Geology. 1977; 5: 464–6p.

S. Martin, W. Szeliga. A Catalog of Felt Intensity Data for 570 Earthquakes in India from 1636 to 2009”, Bull Seismol Soc Am. 2010; 100(2): 562–9p.

L. Reiter. Earthquake Hazard Analysis. NY: Columbia University Press; 1990, 254p.

M.L. Sharma. Attenuation relationship for estimation of peak ground vertical acceleration using data from strong motion arrays in India”, In: Proceedings of Twelfth World Conference on Earthquake Engineering. Paper No. 1964, 2000.

M.L. Sharma, C.D. Lindholm. 2007. “Seismic Hazard Analysis and Zonation for Dehradun, Uttarakhand, India”, Tech.Rep.1, http://www.eqrisk.info/downloads/ Tech_ Report _1_New_Hazard_Report.pdf, accessed 12 September 2010.

M.L. Sharma, C.D. Lindholm. Earthquake hazard assessment for Dehradun including characteristic earthquake model for HFF, Pure Appl Geophys. 2011. DOI 10.1007/s00024-011-0427-7.

S.V. Srikantia, O.N. Bhargava. Geology of Himachal Pradesh. Geological Society of India, 1998, 406p.

K.S. Valdiya. Geology of Kumaun Lesser Himalaya. Wadia Institute of Himalayan Geology, Dehradun; 1980, 291p.

H.R. Wason, R. Das, M.L. Sharma. Magnitude conversion problem using general orthogonal regression, Geophys J Int. 2012; 190(2): 1091–6p.

D.L. Wells, K.J. Coppersmith. New empirical relationships among magnitude, rupture length, rupture area, and surface displacement, Bull Seismol Soc Am. 1994; 84(4): 974–1002p.




DOI: https://doi.org/10.37628/jgget.v4i1.355

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