Rupture mechanism of the 1993 Killari earthquake, India: constraints from aftershocks and static stress change

Gahalaut, V. K. ; K, Kalpana ; Raju, P. S. (2003) Rupture mechanism of the 1993 Killari earthquake, India: constraints from aftershocks and static stress change Tectonophysics, 369 (1-2). pp. 71-78. ISSN 0040-1951

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Official URL: https://www.sciencedirect.com/science/article/pii/...

Related URL: http://dx.doi.org/10.1016/S0040-1951(03)00135-5

Abstract

The Killari earthquake of September 29, 1993 (Mw=6.2) in peninsular India triggered several aftershocks that were recorded by a network of 21 stations. We computed the change in regional static stress caused by coseismic slip on the earthquake rupture and correlated it with the aftershocks with a view to constrain some of the rupture parameters of this earthquake. We evaluated the six available estimates of fault plane solutions for this earthquake and concluded that reverse slip on a 42Å dipping, N112Å trending fault, which extends up to the surface from a depth of 7 km, produces maximum correlation between the increased static stress and aftershock distribution. Our analysis suggests that the majority of coseismic slip occurred on the part of the rupture that lies in the depth range of 3–6.5 km.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Killari Earthquake; Change in Static Stress; Aftershocks; Rupture Modeling; Focal Mechanism
ID Code:112676
Deposited On:07 Jun 2018 06:20
Last Modified:07 Jun 2018 06:20

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