Abstract
The devastating earthquake (mb = 6.6) at Chamoli, Garhwal Himalaya, which occurred in the morning hours on 29th March 1999, was recorded on Delhi Strong Motion Accelerograph (DSMA) Network operated by the Central Building Research Institute, Roorkee. In this paper the source parameters of this event calculated from the Strong Motion Data are presented. The seismic moment for this event has been found to be of the order of 1025 dyne.cm and the moment magnitude has been calculated in the range of 6.53–6.69 at different stations. The stress drop and source radius for the earthquake are also calculated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Abercombie R and Leary P 1993 Source parameters of small earthquakes recorded at 2.5km depth, Cajon Pass, Southern California: Implications for earthquake scaling;Geophys. Res. Lett.,20, 1511–1514
Brune J 1970 Tectonic stress and seismic shear waves from earthquakes;J. Geophys. Res.,75, 4997–5009
IMD 2000 A report on the Chamoli Earthquake of March 29, 1999 and its aftershocks. Seismology No. 2/2000, p 70
Ni J and Barazangi M 1984 Seismotectonics of the Himalayan collision zone geometry of the underthrusting Indian plate beneath the Himalaya;J. Geophys. Res. 89(B2) 1147–1163
Olafsson S, Sigbjornsson R and Einarsson P 1998 Estimation of source parameters and Q from acceleration recorded in the Vatnafjoll earthquake in south Iceland;Bull. Seis. Soc. Am.,88(2), 556–563
Rajendran K, Rajendran C P, Jain S K, Murthy C V R and Arlekar J N 2000 The Chamoli Earthquake, Garhwal Himalaya: Field observations and implications for seismic Hazard;Current Science,78, No. 1., p. 45–51
Rastogi B K 2000 Chamoli earthquake of magnitude 6.6 on 29 March 1999;Geol. Soc. India,55, 505–514
Seeber L and Armbruster J G 1981 Great detachment earthquakes along the Himalayan arc and long term forecasting. In: Earthquake Prediction: An Int. Review,Am. Geophys. Union (Maurice Ewing Series),4, 259–277
Sharma M L and Wason H R 1994 Occurrence of low stress drop earthquakes in the Garhwal Himalaya region;Phys. of Earth snd Planet Interior 85, 265–272
Sharma M L and Wason H R 1995 Seismic moment-magnitude relationship for the Garhwal Himalaya region;Bull. Ind. Soc. Earth Tech. 351, 32(3), 85–95
Singh D D, Rastogi B K and Gupta H K 1979 Spectral analysis of body waves for earthquakes and their source parameters in the Himalaya and nearby regions;Phys. Of Earth and Planet. Interior. 18, 143–152
Valdiya K S 1980Geology of Kumaun Lesser Himalaya, Wadia Institute of Himalayan Geology, Dehradun, p 291
Wason H R, Sharma M L, Khan P K, Kapoor K, Nandini D and Kara V 1999 Preliminary analysis of broadband seismic data of the Chamoli earthquake of March 29, 1999 and its aftershock sequence. In Proc. of the workshop onChamoli Earthquake and its Impact WIHG, Dehradun, India.
Zobin V M and Hasakov J 1995 Source spectral properties of small earthquakes in the northern North Sea;Tectonophysics. 248, 207–218
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pandey, Y., Dharmaraju, R. & Chauhan, P.K.S. Estimation of source parameters of Chamoli Earthquake, India. J Earth Syst Sci 110, 171–177 (2001). https://doi.org/10.1007/BF02702216
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02702216