The waveform correlation event detection system project: Issues in system refinement, tuning, and operation
The goal of the Waveform Correlation Event Detection System (WCEDS) Project at Sandia Labs has been to develop a prototype of a full-waveform correlation based seismic event detection system which could be used to assess potential usefulness for CTBT monitoring. The current seismic event detection system in use at the IDC is very sophisticated and provides good results but there is still significant room for improvement, particularly in reducing the number of false events (currently being nearly equal to the number of real events). Our first prototype was developed last year and since then we have used it for extensive testing from which we have gained considerable insight. The original prototype was based on a long-period detector designed by Shearer (1994), but it has been heavily modified to address problems encountered in application to a data set from the Incorporated Research Institutes for Seismology (IRIS) broadband global network. Important modifications include capabilities for event masking and iterative event detection, continuous near-real time execution, improved Master Image creation, and individualized station pre-processing. All have been shown to improve bulletin quality. In some cases the system has detected marginal events which may not be detectable by traditional detection systems, but definitive conclusions cannot be made without direct comparisons. For this reason future work will focus on using the system to process GSETT3 data for comparison with current event detection systems at the IDC.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 266865
- Report Number(s):
- SAND-96-1828C; CONF-9609185-3; ON: DE96013342; TRN: 96:004396
- Resource Relation:
- Conference: 18. Seismic Research symposium on monitoring a Comprehensive Test Band Treaty (CTBT), Annapolis, MD (United States), 4-6 Sep 1996; Other Information: PBD: 1996
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
INCLUDING NUCLEAR AND PARTICLE DETECTORS
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
99 MATHEMATICS
COMPUTERS
INFORMATION SCIENCE
MANAGEMENT
LAW
MISCELLANEOUS
SEISMIC SURVEYS
EQUIPMENT
TREATIES
COMPLIANCE
SEISMIC EVENTS
MONITORING
DETECTION
WAVE FORMS
CORRELATIONS
NUCLEAR EXPLOSION DETECTION
G CODES