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These instrument-based results are compared with analytical results obtained from a half-space regional model.

Soc. Soc. Subscription will auto renew annually. Around 20,000 homes were obliterated and 70,000 were damaged. Gupta, S.C., Singh, V.N., and Kumar A. The relation between the slip distribution obtained by inversion, isoseimals, mapped faults and the aftershocks location is then discussed and we finally propose a seismotectonic interpretation of this earthquake. Journal of the Earthquake Engineering Society of Korea. The, A shallow earthquake with magnitude 6.7 (the 1980 Izu-Hanto-Toho-Oki earthquake) occurred on June 29, 1980 off the east coast of the Izu Peninsula where activity of earthquake swarm was very high. Dyn.

The Vaikrita thrust marks the line separating the very shallow-dipping detachment (along which big earthquakes like the Uttarkashi earthquake could occur) from the steeper-dipping, aseismic basement thrust. (1987), Modelling earthquake ground motions in seismically active regions using parametric series methods, In: Edited by A.S. Cakmak, Ground Motion and Engineering Seismology, 551–567. Holland, J.H. Am. Smith, M.L., Scales, J.A., and Fischer, T.L. (1983), Stochastic simulation of high-frequency ground motions based on seismological models of the radiated spectra, Bull. The earthquake caused strong ground shaking in the district of Uttarkashi, Tehri, and Chamoli in the state of Uttar Pradesh (Figure 1). 73, 931–951. … Seism. The rock slopes are composed of highly jointed rock mass and the joint spacing and orientation are varying at different locations. Midorikawa, S. (1993), Semi-empirical estimation of peak ground acceleration from large earthquakes, Tectonophysics, 218, 287–295. J. R. Astron. There was also extensive infrastructure damage, including the crumbling of bridges and roads, which made the rescue mission extremely difficult. 168, 1621–1643 (2011). Ou, G.B., and Herrmann, R.B. Six three-component accelerometers were triggered within a radius of 60 km. Dyn., 21, 743–756. Soc. (1995), Strong ground motion from Uttarkashi, Himalaya, India, earthquake: Comparison of observations with synthetics using the composite source model, Bull. Tectonophysics 218:287–295, 1993) and composite source model (Zeng With a moment magnitude of 6.8, this event is characteristic of the present-day motion on the thrust fault system. Anderson, J.G. 95, 225–240. Am. Scope of this work includes estimation of geotechnical parameters for the rock mass, recommending bearing capacity for various foundations resting on the slope, comprehensive slope stability analysis of bridge abutment slopes including wedge failure analysis, sliding and planar failure analysis, global failure analysis, toppling failure analysis, pseudo-static and dynamic analyses for site-specific earthquake scenarios and suggesting necessary measures for the stability of slope sections, design of rock anchors, construction stage analysis & monitoring and bridge erection stage analysis. Eng.

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The slip source function obtained with near-field data is similar to the function obtained from teleseismic records and shows a low moment release at the beginning of the rupture and a maximum rate of moment release 4 seconds after. At that time a maximum acceleration of 0.36 g was recorded at Kawana, about 12 km west of the epicenter, while smaller amplitude accelerograph records were obtained at more than 50 other strong-motion, Recorded acceleration time history. et al. Hutchings, L. (1994), Kinematic earthquake models and synthesized ground motion using empirical Green’s functions, Bull. This observation is important for correctly estimating the seismic hazard in the Uttarkashi region. (1990), The mechanics of earthquakes and faulting, Cambridge Univ. We examine this earthquake using different sets of data in order to understand better the faulting process of a major earthquake in the Himalayan region.

Res. (1999), Modelling of strong ground motions from Dharmsala earthquake of 1986 (mb 5.7), Curr. Immediate online access to all issues from 2019. 7th Japan Earthquake Engineering Symp., 151–156. 77, 468–489. At some of the sites the simulated accelerograms differ from observed ones by a factor of 2–3. Irikura, K. (1986), Prediction of strong acceleration motions using empirical Green’s function, Proc. Olson, A.H., Orcutt, J.A., and Frazier, G.A. Ellis, G.W., De Veaux, R.D., and Carmak, A.S. (1990), Multivariate time series modeling of strong motion accelerograms recorded in Mexico and Taiwan, Soil Dynamics and Earthquake Engineering 9, 218–235. Seism. Erdik, M.O.

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Soc. Sci. Toksoz Strong Ground Motion Seismology, 185–207. Zeng, Y., Anderson, J.G., and Yu, G. (1994), A composite source model for computing realistic synthetic strong ground motions, Geophys. Am. Geophys Res Lett 21:725–728, 1994). Post-2015, we revisited the 1991 Uttarkashi (Mw 6.7) and the 1999 Chamoli (Mw 6.5) earthquakes in India, both of which had originated on the MHT flat, but show SSW-directed slips, as reported in this study.

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Suhadolc, P., and Chiaruttini, C. (1987), A theoretical study on the dependence of the peak ground motion acceleration on source and source parameters. Res. 73, 543–548. J. R. Astron. the peak ground acceleration at Bhuj was of the order of 0.38 g. Ground motion in the surrounding region is indirectly found using available spectral response recorder (SRR) data. The accelerogram of large event is then obtained by combining the envelope function with a band-limited white noise. 85, 1635–1647. Sci. The technique requires the parameters such as fault area, orientation of the fault, hypocenter, size of the sub-events, stress drop, rupture velocity, duration, source–site distance and attenuation parameter.

(1991), Strong motion seismology, Reviews of Geophysics, Seismology supplement, US national report to the international union of Geology and Geophysics 1987-1990, 700–720. Seism. Ruptures of both these earthquakes fell short of reaching the MFT, just as the historically documented 1803 earthquake, but their shaking effects were felt in the southern plains. Copyright © 2020 Elsevier B.V. or its licensors or contributors.

Of Michigan Press, Ann Arbor, Michigan. 73, 1865–1894. Olafsson, S., and Sigbjornsson, R. (1995), Application of ARMA models to estimate earthquake ground motion and structural response, Earthquake Eng. Am. Soc. ELSEVIER Tectonophysics 258 (1996) 35-51 TECTONOPHYSICS Rupture history and seismotectonics of the 1991 Uttarkashi, Himalaya earthquake F. Cotton a,*, M. Campillo a, A. Deschamps b, B.K. The area was home to 307,000 people spread out among 1,300 villages. 403, 35–44. Ellis, G.W., Cakmak, A.S., and Ledolter, J. 24, 951–966. Archuleta, R. (1984), A faulting model for the 1979 Imperial Valley earthquake, J. Geophys. Earth 27, 353–372. Sturdy shocks have been felt in these two areas of Uttar Pradesh and different parts. Irikura, K., and Muramatu, I. Soc. 10, 651–662. PubMed Google Scholar. Am.

You can reject cookies by changing your browser settings. Soc. Cotton, F., Campillo, M., Deschamps, A., and Rastogi, B.K. (1990) and Gahalaut et al. (ZIP), Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in, Access scientific knowledge from anywhere. (1996), A composite source model of the 1994 Northridge earthquake using Genetic Algorithms, Bull. 5, 1–4. (1993), A combined genetic and linear inversion algorithm for seismic waveform inversion, Proc. The area was home to 307,000 people spread out among 1,300 villages. Dinesh Kumar. Soc. (1954), A relation between the area of aftershock region and the energy of main shock, J. Seism. Am. Spudich, P., and Ascher, U. (1983), On the Green’s functions for a layered half-space part II, Bull. Around 768 persons died and about 5,066 people were injured. "This Day In Weather History” is a daily podcast by The Weather Network that features unique and informative stories from host Chris Mei. Jurkevics, A., and Ulrych, T. (1978), Representing and simulating strong ground motion, Bull. Subscribe: Apple Podcasts | Amazon Alexa | Google Assistant | Spotify | Google Podcasts | iHeartRadio | Overcast. Am. With a moment magnitude of 6.8, this event is characteristic of the present-day motion on the thrust fault system.

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bridge site is located in a high seismic zone. Seism.

Case Study: Attenuation Relation for Kumaon and Garhwal Himalaya. Earth and Planet. The area was home to 307,000 people spread out among 1,300 villages. Am. 89, 4559–4585. Joshi, A. Yu, G., Khattri, K.N., Anderson, J.G., Brune, J.N. Dyn. 54, 1811–1841. Two of them were very close to the surface projection of the fault.

The earthquake caused massive landslides to take place, which caused power and telephone outages. Zeng, Y., and Anderson, J.G.

The Uttarkashi earthquake probably occurred along the detachment surface which coincides with the upper surface of the subducting Indian lithosphere. Am. volume 168, pages1621–1643(2011)Cite this article. Frankel, A. Soc. (1992), Global search and genetic algorithms, Geophysics: The Leading Edge of Exploration, January, 22–29. Res. Reiter, L., (1990), Earthquake Hazard Analysis—Issues and Insights, Columbia University Press, New York, 254 p. Sato, R. (1979), Theoretical basis on relationships between focal parameters and earthquake magnitude, J. Phys. Pure and Applied Geophysics Tanaka, T., Yoshizawa, S., Sakaue, M., and Osawa,Y.

(1996), Rupture history and seismotectonics of the 1991 Uttarkashi, Himalaya earthquake, Tectonophysics 258, 35–51. Dinesh Kumar, Teotia, S.S., and Khattri, K.N. Chandrasekaran, A.R., and Das, J.D. Am. 86(1B), 71–83. Eng. Haskell, N.A. We examine this earthquake using different sets of data in order to understand better the faulting process of a major earthquake in the Himalayan region.

© 2020 Springer Nature Switzerland AG. Am. This detachment surface is gently dipping under the Lesser Himalaya and south of the Vaikrita thrust. Soc. An earthquake of magnitude 6.6 shook Uttarkashi district, in the state of Uttar Pradesh, India on October 20, 1991 at 2:52 hours. Soc. max or a desired frequency for the simulation. Toro, G., and McGuire, R. (1987), An investigation into earthquake ground motion characteristics in eastern North America, Bull.

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