tailieunhanh - Empirical attenuation relationship for peak ground horizontal acceleration for north-east Himalaya

North-East India is located in one of the most seismic prone areas of the world. India has faced several devastating earthquakes in the past. The largest of these have originated in the Himalayan plate boundary region, which has remained a region of great scientific and engineering interest. In spite of this, very little seismological information is available about North- East India, which is the focus for present study. | Vietnam Journal of Earth Sciences, 39(1), 47-57, DOI: Vietnam Academy of Science and Technology Vietnam Journal of Earth Sciences (VAST) Empirical Attenuation relationship for Peak Ground Horizontal Acceleration for North-East Himalaya Arjun Kumar1*, Himanshu Mittal2, Rohtash Kumar3, Rajeev Saran Ahluwalia4 1 Department of Civil Engineering Arni University, Kathgarh, (), India 2 #207, Back suit, Global Change Center National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei-10617 3 Department of Geophysics Banaras Hindu University, Varanasi, India 4 Centre for Glaciology, Wadia Institute of Himalayan Geology, Dehradun (.) India Received 30 August 2016. Accepted 6 February 2017 ABSTRACT North-East India is located in one of the most seismic prone areas of the world. India has faced several devastating earthquakes in the past. The largest of these have originated in the Himalayan plate boundary region, which has remained a region of great scientific and engineering interest. In spite of this, very little seismological information is available about North- East India, which is the focus for present study. Only few attenuation relationships are available for this region, which are most valuable in a region where too much strong motion recordings are not available. However in recent time, with the inception of 300 strong motion instruments under Indian National Strong Motion Network deployed under Mission Mode project (Government of India), a good quality of strong motion data became available. Taking the advantage of data collected by this network and earlier analogue strong motion arrays, an endeavor has been made to develop an empirical attenuation relationship for peak horizontal ground accelerations for North-East Himalayan region in India. The data set consists of 216 peak ground horizontal accelerations from 24 earthquakes (≤M≤) recorded by strong-motion arrays and .

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