Podrobnosti záznamu

Název
    Iterative joint inversion for stress and fault orientations from focal mechanisms
Autor
    Vavryčuk, Václav
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Geophysical Journal International
Svazek/č.
    Roč. 199, č. 1
Strany
    s. 69-77
Rok
    2014
Poznámky
    doplnit UT ISI
    Projekt: GAP210/12/1491, GA ČR, CZ3cav_un_auth*0285048
    Rozsah: 11 s. : P
Předmětová kategorie
    earthquake source observations
    seismicity and tectonics
    theoretical seismology
Klíčové slovo
    Fault
    Focal
    Inversion
    Iterative
    Joint
    Mechanisms
    Orientations
    Stress
Abstrakt (anglicky)
   Stress inversions from focal mechanisms require knowledge of which nodal plane is the fault. If such information is missing, and faults and auxiliary nodal planes are interchanged, the stress inversions can produce inaccurate results. It is shown that the linear inversion method developed by Michael is reasonably accurate when retrieving the principal stress directions even when the selection of fault planes in focal mechanisms is incorrect. However, the shape ratio is more sensitive to the proper choice of the fault and substituting the faults by auxiliary nodal planes introduces significant errors. This difficulty is removed by modifying Michael's method and inverting jointly for stress and for fault orientations. The fault orientations are determined by applying the fault instability constraint and the stress is calculated in iterations.
Přispěvatel
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
    U
Datum importu
    23. 10. 2014