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dc.contributor.authorKameshRaju, K.A.
dc.contributor.authorMurty, G.P.S.
dc.contributor.authorAmarnath, D.
dc.contributor.authorMohanKumar, M.L.
dc.date.accessioned2007-05-01T10:08:15Z
dc.date.available2007-05-01T10:08:15Z
dc.date.issued2007
dc.identifier.citationGeophysical Research Letters, vol.34(3), 5pp.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/599
dc.description.abstractDistinctly different rupture patterns of December 2004 and March 2005 megathrust earthquakes occurred in the Andaman-Sumatra region suggest strong influence of tectonic and structural elements. We have analysed the shipboard gravity, bathymetry and seismic data across the West Andaman Fault (WAF), a major tectonic feature in the Andaman Sea, to infer the crustal structure and to examine its influence in controlling the aftershock pattern. Our results support the idea of Singh [2005] that WAF forms a lithospheric scale boundary and together with other tectonic elements modulates the occurrence of large earthquakes and their rupture pattern. The active strike-slip motion along the WAF, presence of backarc spreading coupled with increased obliquity of subduction in the Andaman Sector reduce the probability of occurrence of major or great earthquakes north of 10°N.
dc.format.extent1240973 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.rightsAn edited version of this paper was published by AGU. Copyright [2007] AGU. To view the published open abstract, go to http://dx.doi.org and enter the DOI.
dc.subjectshipboard gravity
dc.subjectseismic data
dc.titleThe west Andaman fault and its influence on the aftershock pattern of the recent megathrust earthquakes in the Andaman-Sumatra region
dc.typeJournal Article


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