Propagation of high frequencies in Scandinavia
To determine if seismic signals at frequencies up to 50 Hz are useful for detecting events and discriminating between earthquakes and explosions, approximately 180 events from the three-component high-frequency seismic element (HFSE) installed at the center of the Norwegian Regional Seismic Array (NRSA) have been analyzed. The attenuation of high-frequency signals in Scandinavia varies with distance, azimuth, magnitude, and source effects. Most of the events were detected with HFSE, although detections were better on the NRSA where signal processing techniques were used. Based on a preliminary analysis, high-frequency data do not appear to be a useful discriminant in Scandinavia. 21 refs., 29 figs., 3 tabs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6176562
- Report Number(s):
- SAND-88-1047; ON: DE89010278
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
450300* -- Military Technology
Weaponry
& National Defense-- Nuclear Explosion Detection
COMPARATIVE EVALUATIONS
DATA
DETECTION
EARTHQUAKES
EUROPE
EXPERIMENTAL DATA
EXPLOSIONS
IMAGE PROCESSING
INFORMATION
MEASURING INSTRUMENTS
NUCLEAR EXPLOSION DETECTION
NUCLEAR EXPLOSIONS
NUMERICAL DATA
PROCESSING
SCANDINAVIA
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC EVENTS
SEISMIC SOURCES
WESTERN EUROPE