Clustering of 2008 West Bohemian seismic swarm mechanisms and its possible interpretation

0486514 - GFÚ 2019 RIV CZ eng J - Článek v odborném periodiku
Kolář, Petr - Boušková, Alena
Clustering of 2008 West Bohemian seismic swarm mechanisms and its possible interpretation.
Acta geodynamica et geomaterialia. Roč. 15, č. 1 (2018), s. 27-40. ISSN 1214-9705. E-ISSN 2336-4351
Grant CEP: GA ČR(CZ) GA16-03950S
Institucionální podpora: RVO:67985530
Klíčová slova: West Bohemian earthquake swarm region * source mechanism * slip distribution * finite seismic source model
Obor OECD: Volcanology
Impakt faktor: 1.062, rok: 2018

Set of events from West Bohemian 2008 seismic swarm with known source mechanisms is processed. The events or their slips respectively are clustered into two groups: (i) principal events with slip laying in the main fault plane and (ii) complementary events deviating from that plane. From those slips we constructed image of slip distribution (a new way of data/slip presentation) and from slip distribution and variations we hypothesized about foci zone properties. Namely, we propose that western block is more rigid and compact, the eastern block appears to be constituted from several sub-blocks which can interact with each other during the swarm course. Our hypothesis is supported by similar image constructed from relative rupture velocities, which we consider as independent data. The proposed structural model agrees with the existence of the different observed types of source mechanisms.
Trvalý link: http://hdl.handle.net/11104/0281306