Počet záznamů: 1

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

  1. 1.
    0348504 - GFU-E 2011 RIV US eng J - Článek v odborném periodiku
    Adamová, Petra - Šílený, Jan
    Non-double-couple earthquake mechanism as an artifact of the point-source approach applied to a finite-extent focus.
    Bulletin of the Seismological Society of America. Roč. 100, č. 2 (2010), s. 447-457 ISSN 0037-1106
    Grant CEP: GA ČR GA205/09/0724
    Grant ostatní: GA MŠk(CZ) specifický-výzkum
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: non-double-couple earthquake mechanism * moment tensor * finite-extent focus
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
    Impakt faktor: 2.027, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0189029