Podrobnosti záznamu

Název
    Determination of full moment tensors of microseismic events in a very heterogeneous mining environment
Autor
    Kühn, D.
    Vavryčuk, Václav
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Tectonophysics
Svazek/č.
    Roč. 589, March
Strany
    s. 33-43
Rok
    2013
Poznámky
    Projekt: FP7 Consortium Project AIM 230669, European Commission, XE3cav_un_auth*0301878
    Projekt: GAP210/12/1491, GA ČR, CZ3cav_un_auth*0285048
    Projekt: IAA300120801, GA AV ČR3cav_un_auth*0241180
    Rozsah: 11 s. : P
Předmětová kategorie
    finite-difference modelling
    microseismicity
    mining
    moment tensors
    non-double-couple components
Klíčové slovo
    Determination
    Environment
    Events
    Full
    Heterogeneous
    Microseismic
    Mining
    Moment
    Tensors
    Very
Abstrakt (anglicky)
   The determination of source parameters and full moment tensors in mines is a difficult task, especially, when the velocity model of the mining environment is complex and strongly heterogeneous. The heterogeneities in the velocity model are usually caused by the presence of ore bodies, host rocks, tunnel systems and large excavations due to mining activity. The mined-out cavities introduce strong velocity contrasts in the model, cause multiple scattering of waves and result in a complex wave field with long coda waves. We have analysed five blasts and five induced microseismic events recorded at the Pyhasalmi ore mine, Finland, and suggest a strategy of successfully inverting for the seismic moment tensors. We compute accurate locations using an eikonal solver and perform the time-domain moment tensor inversion from full waveforms using a generalized linear inversion.
Přispěvatel
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
    U
Datum importu
    23. 10. 2014