Three-dimensional seismic velocity model of theWest Bohemia/Vogtland seismoactive region

0397157 - GFÚ 2014 RIV GB eng J - Journal Article
Růžek, Bohuslav - Horálek, Josef
Three-dimensional seismic velocity model of theWest Bohemia/Vogtland seismoactive region.
Geophysical Journal International. Roč. 195, č. 2 (2013), s. 1251-1266. ISSN 0956-540X. E-ISSN 1365-246X
R&D Projects: GA ČR GAP210/12/2336; GA MŠMT LM2010008
Institutional support: RVO:67985530
Keywords : controlled source seismology * body waves * seismic tomography * crustal structure
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 2.724, year: 2013

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.
Permanent Link: http://hdl.handle.net/11104/0224782