Record details

    Three-dimensional seismic velocity model of theWest Bohemia/Vogtland seismoactive region
    Horálek, Josef
    Růžek, Bohuslav
Publication type
    článek v odborném periodiku
Source title - serial
    Geophysical Journal International
    Roč. 195, č. 2
    s. 1251-1266
    Projekt: GAP210/12/2336, GA ČR3cav_un_auth*0290990
    Projekt: LM2010008, GA MŠk3cav_un_auth*0273783
    Rozsah: 16 s. : P
Subject category
    body waves
    controlled source seismology
    crustal structure
    seismic tomography
Abstract (in english)
   In this paper, we present a smooth 3-D seismic model WB2012 for the West Bohemia/Vogtland earthquake swarm region derived by means of seismic tomography. Inverted data were represented by a set of 2920 P-wave traveltimes from controlled shots fired in a framework of different experiments and a set of 11339 P- and S-wave arrival times from 661 local earthquakes between 1991 December and 2010 March. We used a standard tomographic approach for independent calculation of P- and S-wave velocity fields in a rectangular grid whose size was 1 km in all coordinates. The traveltimes and rays were calculated by a numerical solution of the eiconal equation. While locating seismic events, our new WB2012 model yielded arrival time residuals on average by 13 per cent lower and hypocentre depths by 0.95 km shallower compared to the locations of the foci in the standard 1-D vertically inhomogeneous isotropic velocity model of the West Bohemia swarm region WB2005.
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
Import date
    23. 10. 2014