Počet záznamů: 1

Visualization of the fault slip connected with the West Bohemia earthquake swarms

  1. 1.
    0363897 - GFU-E 2012 RIV CZ eng J - Článek v odborném periodiku
    Kolář, Petr - Růžek, Bohuslav - Boušková, Alena - Horálek, Josef
    Visualization of the fault slip connected with the West Bohemia earthquake swarms.
    Acta geodynamica et geomaterialia. Roč. 8, č. 2 (2011), s. 169-187 ISSN 1214-9705
    Grant CEP: GA AV ČR(CZ) IAA300120805; GA ČR GAP210/10/1728
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: West Bohemia earthquake swarm * fault slip * fault dynamics * asperity
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
    Impakt faktor: 0.530, rok: 2011

    The West Bohemia earthquake swarm foci are approximated by a circular seismic source model, which radius is assumed to depend only on magnitude of the event. We consider two different models of average slip (i) a constant slip and (ii) a slip exponentially scaled to the magnitude of the event. Based on these assumptions, we stacked the contributions of individual events into representative final fault slip. We processed in such a way four significant swarms recorded during the last three decades in 1986, 1997, 2000 and 2008. Constant slip model indicates final slip was composed of 2 or 3 principal asperities located on one or two different planes. On the contrary, scaled slip model indicates that one big asperity prevails. It is not possible yet to select the preferred slip model. Analysis of the temporal activity of all swarms generally shows three principal phases: starting phase, main phase and fading phase; the upwards trend of activity spreading was observed.
    Trvalý link: http://hdl.handle.net/11104/0199516