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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/5901
Title: Detailed attenuation study of shear waves in the Kumaon Himalaya, India, using the inversion of strong-motion data
Authors: Kumar P.
Joshi A.
Sandeep
Kumar A.
Chadha R.K.
Published in: Bulletin of the Seismological Society of America
Abstract: The frequency-dependent shear-wave quality factor Q<inf>?</inf>(f) of the seismically active Kumaon Himalaya was calculated using strong-motion data recorded between 2006 and 2012. The inversion algorithm of strong-motion data, developed here, simultaneously gives the shear-wave quality factor and the site effect for each earthquake. The site effects obtained from the present inversion are within the standard limit of error and agree with those obtained through the H/V technique (H/V being the ratio of the Fourier spectra of the horizontal and vertical components of the record). The Q<inf>?</inf>(f) values (in which Q<inf>?</inf> is shear-wave quality factor and f is frequency) at different stations were computed using both the north–south and east–west components of acceleration records. The Q<inf>?</inf>(f) values obtained from both components at 16 stations in the Kumaon Himalaya were used to compute a regional Q(f) relationship having the form Q<inf>?</inf>(f) (f)=(28 ± 2:0)f (1:2±0:07). This Q(f) relationship suggests a low Q0 value (<200) and a high n value (>0:8) for tectonically and seismically active regions. © 2015, Seismological Society of America. All rights reserved.
Citation: Bulletin of the Seismological Society of America (2015), 105(4): 1836-1851
URI: https://doi.org/10.1785/0120140053
http://repository.iitr.ac.in/handle/123456789/5901
Issue Date: 2015
Publisher: Seismological Society of America
ISSN: 371106
Author Scopus IDs: 57192586891
55682260000
55914925100
57209569502
35777610200
Author Affiliations: Kumar, P., Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Joshi, A., Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Sandeep, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Kumar, A., Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Chadha, R.K., National Geophysical Research Institute, Uppal Road, Hyderabad, India
Appears in Collections:Journal Publications [ES]

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