Skip navigation
Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorJoshi A.-
dc.contributor.authorKumar A.-
dc.contributor.authorMohan K.-
dc.contributor.authorRastogi B.K.-
dc.identifier.citationNatural Hazards (2013), 68(2): 249-269-
dc.description.abstractThe Kutch region of Gujarat in India is the locale of one of the most devastating earthquake of magnitude (Mw) 7.7, which occurred on January 26, 2001. Though, the region is considered as seismically active region, very few strong motion records are available in this region. First part of this paper uses available data of strong motion earthquakes recorded in this region between 2006 and 2008 years to prepare attenuation relation. The developed attenuation relation is further used to prepare synthetic strong motion records of large magnitude earthquakes using semiempirical simulation technique. Semiempirical simulation technique uses attenuation relation to simulate strong ground motion records of any target earthquake. The database of peak ground acceleration obtained from simulated records is used together with database of peak ground acceleration obtained from observed record to develop following hybrid attenuation model of wide applicability in the Kutch region:, In the above equation, PGA is maximum horizontal ground acceleration in gal, Mw is moment magnitude of earthquake, R is hypocentral distance, and E is epicentral distance in km. The standard deviation of residual of error in this relation is 0.5. This relation is compared with other available relations in this region, and it is seen that developed relation gives minimum root mean square error in comparison with observed and calculated peak ground acceleration from same data set. The applicability of developed relation is further checked by testing it with the observed peak ground acceleration from earthquakes of magnitude (Mw), 3.6, 4.0, 4.4, and 7.7, respectively, which are not included in the database used for regression analysis. The comparison demonstrates the efficacy of developed hybrid attenuation model for calculating peak ground acceleration values in the Kutch region. © 2013 Springer Science+Business Media Dordrecht.-
dc.publisherKluwer Academic Publishers-
dc.relation.ispartofNatural Hazards-
dc.subjectAttenuation relation-
dc.subjectStrong ground motion-
dc.titleHybrid attenuation model for estimation of peak ground accelerations in the Kutch region, India-
dc.affiliationJoshi, A., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee, India-
dc.affiliationKumar, A., Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee, India-
dc.affiliationMohan, K., Institute of Seismological Research, Raisan, Gandhinagar, 382009 Gujarat, India-
dc.affiliationRastogi, B.K., Institute of Seismological Research, Raisan, Gandhinagar, 382009 Gujarat, India-
dc.description.fundingSeveral strong motion accelerographs have been installed in the Kutch region, India, under a major project funded by the Department of Science and Technology, Government of Gujarat, India. It has recorded several small magnitude earthquakes in a small span of time, due to low threshold level of its recording. Availability of peak ground acceleration from recorded strong motion data from this network has provided an opportunity in this paper to prepare a regional regression relation for this region. Direct use of these data gives a regression relation of limited magnitude and distance applicability, which is of very limited engineering use. The technique of semiempirical modeling of rupture plane is one-
dc.description.correspondingauthorKumar, A.; Department of Earth Sciences, Indian Institute of Technology Roorkee, Roorkee, India; email:
Appears in Collections:Journal Publications [ES]

Files in This Item:
There are no files associated with this item.
Show simple item record

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.