Podrobnosti záznamu

    High-resolution fault image from accurate locations and focal mechanisms of the 2008 swarm earthquakes in West Bohemia, Czech Republic
    Bouchaala, Fateh
    Fischer, Tomáš
    Vavryčuk, Václav
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Roč. 590, April
    s. 189-195
    Projekt: FP7 Consortium Project AIM 230669, European Commission, XE3cav_un_auth*0301878
    Projekt: GAP210/12/1491, GA ČR, CZ3cav_un_auth*0285048
    Projekt: LM2010008, GA MŠk3cav_un_auth*0273783
    Rozsah: 7 s. : P
Předmětová kategorie
    earthquake location
    failure criterion
    fault friction
    focal mechanism
    tectonic stress
Klíčové slovo
Abstrakt (anglicky)
   We have analyzed 463 micro-earthquakes in the magnitude range from 0.5 to 3.8 that occurred during the 2008 earthquake swarm in West Bohemia, Czech Republic, in order to screen the detailed structure of the focal zone situated at depths between 7 and 11 km. The double-difference location method was applied to records of 22 local seismic stations with an epicentral distance of less than 25 km in order to retrieve highly accurate locations of hypocenters with an accuracy of less than 20 m. The hypocenters are well-clustered and distinctly map the system of activated faults. The fault system has a complex geometry being composed of several fault segments with different orientations. Some of the segments intersect each other. The orientations of the segments coincide well with the focal mechanisms. We have introduced and evaluated the so-called fault instability of the individual fault segments.
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
Datum importu
    23. 10. 2014