Accession Number : ADA292509

Title :   Advanced Waveform Research Methods for GERESS Recordings. Monitoring Nuclear Test Sites with GERESS.

Descriptive Note : Scientific rept. no. 1,

Corporate Author : BOCHUM UNIV (GERMANY F R)

Personal Author(s) : Harjes, H. P. ; Jost, M. ; Schweitzer, J. ; Bokelmann, G.

PDF Url : ADA292509

Report Date : 15 JUN 1994

Pagination or Media Count : 103

Abstract : This report summarizes research activities with GERESS data carried out at the institute of Geophysics in Bochum during the second semiannual period (December 1993- May 1994) 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 detect and locate seismic events in near real-time. The GERESS data centre in Bochum continued to be responsible for maintenance of the array. The average uptime which includes the Bochum data centre has increased to 99.65% during the first 5 months of 1994. For comparison, GERESS uptimes were 97.2% in 1993, 96.9% in 1992, and 91.5% in 1991. In Bochum, extensive parameter data for 54 regional and teleseismic phases have been interactively reviewed each day on average. From December 1993 to May 1994, 20 regional events have been automatically located each day on average. GERESS data have also been transmitted to NORSAR continuously. The GERESS data centre Bochum has aided the CSS to test the experimental GSETT-3 International Data Centre (IDC VO, since May 1993). Within this concept, GERESS served as an alpha-station and acted as a node to access beta-stations in Germany. Two major research projects were finished and separated papers are included in this report. The first paper (Jost et al) summarizes the GERESS recordings of underground nuclear explosions.

Descriptors :   *WAVEFORMS, *UNDERGROUND EXPLOSIONS, *SEISMIC DETECTION, *MONITORS, *NUCLEAR EXPLOSION DETECTION, MAINTENANCE, NUCLEAR EXPLOSIONS, MONITORING, REAL TIME, PARAMETERS, ARRAYS, NUCLEAR EXPLOSION TESTING, WAVE PROPAGATION, SEISMIC WAVES, GERMANY, CALIBRATION, ONLINE SYSTEMS, GEOPHYSICS, TEST FACILITIES, CENTRAL EUROPE.

Subject Categories : Nuclear Warfare
      Seismic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE