Investigations on the aftershock sequence of the great Assam earthquake of August 15, 1950

R. K. S. CHOUHAN, V. K. GAUR, J. SINGH

Abstract


The strain release curve of the aftershock sequence of
the great Assam earthquake of August 15, 1950 exhibits three linear segments.
A secondary aftershock sequence has also been reported; the strain
release curve in this case is also linear. The b value, using the maximum
likelihood method of Utsu, for the sequence is 0.52 ± 0.095. The fault plane
solution shows that the fault strikes almost cast-west and dips northward
at an angle of 80°; the motion is predominently strike slip (right lateral
type). The spatial distribution of aftershocks shows two main centers of
activity at the two ends of the probable fault.

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References


DOI: https://doi.org/10.4401/ag-4923
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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X