Frequency-Dependent Lg Attenuation in the Indian Platform

dc.contributor.author	Mitra, S
dc.contributor.author	Priestley, K
dc.contributor.author	Gaur, V. K
dc.contributor.author	Rai, S. S
dc.date.accessioned	2008-09-02T11:04:31Z
dc.date.available	2008-09-02T11:04:31Z
dc.date.issued	2006-12
dc.identifier.citation	Bulletin of the Seismological Society of America, Vol. 96, No. 6, pp. 2449 - 2456	en
dc.identifier.issn	0037-1106
dc.identifier.uri	http://hdl.handle.net/2248/3326
dc.description.abstract	We use seismograms from regional earthquakes recorded on digital seismographs in peninsular India to determine the frequency-dependent Q of Lg for the Indian platform. We measure Lg attenuation by determining the decay of spectral amplitudes with distance. The available data suggest some spatial variation in attenuation but a much denser ray-path coverage would be required to validate such observations. We, therefore, combine all the measurements of overlapping regions that span both the shield and intervening terranes to obtain an average value of attenuation for the Indian platform: Lg–Q = 665 ± 10 with the frequency exponent n = 0.67 ± 0.03. This average value of Lg attenuation for the Indian platform is similar to the average for other stable regions of the globe.	en
dc.language.iso	en	en
dc.publisher	Seismological Society of America	en
dc.relation.uri	http://dx.doi.org/10.1785/0120050152	en
dc.subject	Seismograms	en
dc.subject	Spectral Amplitudes	en
dc.title	Frequency-Dependent Lg Attenuation in the Indian Platform	en
dc.type	Article	en