Advanced Waveform Research Methods for GERESS Recordings: GERESS Array Mislocations and Regional Wave Propagation in Europe.
Status rept. Jan-Nov 93,
BOCHUM UNIV (GERMANY F R)
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The German Experimental Seismic System GERESS is operated by Ruhr-University Bochum, Germany. It is an extension of the Scandinavian regional array network, i.e. NORESS. ARCESS, and FINESA, into Central Europe. This report summarizes research activities carried out at the data centre in the Institute of Geophysics in Bochum during the first semiannual period June - November 1993 of the current grant. GERESS data are continuously transmitted from the array hub in Bavaria to Bochum and analyzed by an on line processing system, based on RONAPP, to locate seismic events in near real time. In 1993, Ruhr University continued the on site maintenance of the array as part of the research grant. As described in detail in the status report M. Jost, the monthly uptime of the array varied during the reporting period between 99.3 and 88.6 with an average of 97.4 . Two major research projects were finished and separated papers are included in this report. The first report J. Schweitzer explores specific path effects for regional waves in Central Europe. Data from the Group of Scientific Experts Second Technical Test GSETT-2 clearly show the influence of an ancient border line between the East European Platform and the West European Orogen which is known as the Teisseyre-Tornquist zone TTZ.