Record details

    Resolution of non-double-couple components in the seismic moment tensor using regional networks-I: a synthetic case study
    Bohnhoff, M.
    Stierle, E.
    Šílený, Jan
    Vavryčuk, Václav
Publication type
    článek v odborném periodiku
Source title - serial
    Geophysical Journal International
    Roč. 196, č. 3
    s. 1869-1877
    Projekt: GAP210/12/1491, GA ČR, CZ3cav_un_auth*0285048
    Projekt: GAP210/12/2235, GA ČR3cav_un_auth*0284894
    Rozsah: 9 s. : P
Subject category
    earthquake source observations
    inverse theory
    numerical approximations and analysis
    theoretical seismology
Abstract (in english)
   We perform a detailed synthetic study on the resolution of non-double-couple (non-DC) components in the seismic moment tensors from short-period data observed at regional networks designed typically for monitoring aftershock sequences of large earthquakes. In addition, we test two different inversion approaches-a linear full moment tensor inversion and a non-linear moment tensor inversion constrained to a shear-tensile source model. The inversions are applied to synthetic first-motion P- and S-wave amplitudes, which mimic seismic observations of aftershocks of the 1999 M-w = 7.4 Izmit earthquake in northwestern Turkey adopting a shear-tensile source model. To analyse the resolution capability for the obtained non-DC components inverted, we contaminate synthetic amplitudes with random noise and incorporate realistic uncertainties in the velocity model as well as in the hypocentre locations.
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
Import date
    23. 10. 2014