Resolution of non-double-couple mechanisms: simulation of hypocenter mislocation and velocity structure mismodeling

0330652 - GFÚ 2010 RIV US eng J - Článek v odborném periodiku
Šílený, Jan
Resolution of non-double-couple mechanisms: simulation of hypocenter mislocation and velocity structure mismodeling.
Bulletin of the Seismological Society of America. Roč. 99, č. 4 (2009), s. 2265-2272. ISSN 0037-1106. E-ISSN 1943-3573
Grant CEP: GA AV ČR IAA300120502; GA ČR GA205/09/0724
Grant ostatní: EU(XE) MTKI-CT-2004-517242
Výzkumný záměr: CEZ:AV0Z30120515
Klíčová slova: earthquake mechanisms * induced seismic events * non-double-couple mechanisms
Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
Impakt faktor: 1.860, rok: 2009

Mechanisms of earthquakes and induced seismic events are frequently found using the moment tensor description rather than the traditional double couple (DC), as it allows for nonshear source phenomena. However, non-DC source components are sensitive to event mislocations and inexact velocity models of the crust. Inaccuracies such as these can generate spurious non-DC components in the mechanism, which should be taken into account during the interpretation. We perform a synthetic case study simulating seismic observations at Soultz-sous-Forêts, Alsace, hot dry rock (HDR) site. Synthetic P and S amplitudes for several shear-tensile source models are inverted, assuming hypocenter mislocation and velocity structure mismodeling in several types of station coverage.
Trvalý link: http://hdl.handle.net/11104/0176388