We present preliminary results from a travel time tomography investigation of the upper crust beneath west Bohemia/Vogtland region which is characterized by a series of phenomena like occurrence of repeated earthquake swarms, surface exhalation, CO2 enriched fluids, mofettes, mineral springs and enhanced heat flow. This region is an excellent location for an ICDP drilling project targeted to a better understanding of the crust in an active magmatic environment. The data set were taken from permanent and temporary seismic networks in Germany and Czech Republic from 2000 to 2010, as well as active seismic experiments like Celebration 2000 and quarry blasts. Seismic Handler was applied for picking P and S wave arrival times. Before travel time inversion, we selected 399 events which were recorded by 9 or more stations and azimuthal gap<160°. In the first step a simultaneous inversion of P and S wave 1-D velocity models together with relocations of hypocenters and station corrections was performed. To test the reliability of earthquake locations we performed two experiments: first relocation of randomly perturbed earthquakes in the preferred 1-D velocity model, second mislocations of shots to check the accuracy of the earthquake positions.
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73. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, 2013