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Non-double-couple earthquake mechanism as an artifact of the point-source approach applied to a finite-extent focus

SYSNO ASEP	0348504
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Non-double-couple earthquake mechanism as an artifact of the point-source approach applied to a finite-extent focus
Author(s)	Adamová, Petra (GFU-E)_{ORCID, RID} Šílený, Jan (GFU-E)_{ORCID, RID}
Source Title	Bulletin of the Seismological Society of America. - : Seismological Society of America - ISSN 0037-1106 Roč. 100, č. 2 (2010), s. 447-457
Number of pages	11 s.
Language	eng - English
Country	US - United States
Keywords	non-double-couple earthquake mechanism ; moment tensor ; finite-extent focus
Subject RIV	DC - Siesmology, Volcanology, Earth Structure
R&D Projects	GA205/09/0724 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z30120515 - GFU-E (2005-2011)
UT WOS	000275597200002
DOI	10.1785/0120090097
Annotation	A sizable amount of moderate and strong earthquakes exhibit a considerable percentage of non-double-couple (non-DC) components in the mechanism, as reported by agencies determining moment tensors on a routine basis from long-period seismograms. As most of them are tectonic events where a simple shear slip is anticipated along a roughly planar fault (at least in the optics of the long periods used), suspicion arises about their source origin. Leaving aside anisotropy in the source region, we assign them to be side effects of the application of the first degree moment tensor approximation to data still containing (after low-pass filtering) information about the source finiteness.
Workplace	Geophysical Institute
Contact	Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028
Year of Publishing	2011

Number of the records: 1