A comparison of select trigger algorithms for automated global seismic phase and event detection
@article{Withers1998ACO, title={A comparison of select trigger algorithms for automated global seismic phase and event detection}, author={Mitch Withers and Richard C. Aster and Christopher J. Young and Judy I. Beiriger and Mark Harris and Susan G. Moore and Julian R. Trujillo}, journal={Bulletin of the Seismological Society of America}, year={1998} }
Digital algorithms for robust detection of phase arrivals in the presence of stationary and nonstationary noise have a long history in seismology and have been exploited primarily to reduce the amount of data recorded by data logging systems to manageable levels. In the present era of inexpensive digital storage, however, such algorithms are increasingly being used to flag signal segments in continuously recorded digital data streams for subsequent processing by automatic and/or expert…
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References
SHOWING 1-10 OF 54 REFERENCES
Characterization of global seismograms using an automatic-picking algorithm
- GeologyBulletin of the Seismological Society of America
- 1994
An automatic phase picker is useful for quickly identifying and timing phase arrivals in large seismic data bases. We have developed an automatic phase picker that is sensitive to small changes in…
Automatic phase pickers: Their present use and future prospects
- Geology
- 1982
Automatic phase-picking algorithms are designed to detect a seismic signal on a single trace and to time the arrival of the signal precisely. Because of the requirement for precise timing, a…
The waveform correlation event detection system project, Phase I: Issues in prototype development and testing
- Geology
- 1996
A study using long-period seismic data showed that seismic events can be detected and located based on correlations of processed waveform profiles with the profile expected for an event. In this…
A teleseism-specific detection algorithm for single short-period traces
- Geology
- 1983
abstract An algorithm for microprocessor-controlled seismographic recorders is described which reliably detects major phases from earthquakes more than 3° from the sensor but rejects noise events and…
Characterization of seismic phases—an automatic analyser for seismograms
- Geology
- 1995
An automatic analyser which characterizes, as well as detects, seismic phases can be a significant help in the interpretation of seismograms, constructed using concepts from work in artificial intelligence.
An automatic seismic signal detection algorithm based on the Walsh transform
- Computer Science
- 1981
An automatic seismic signal detection algorithm based on the Walsh transform has been developed for short-period data sampled at 20 samples/sec and tests indicate that the algorithm has a detection capability comparable to a human analyst.
Real-time detection and location of local seismic events in central California
- GeologyBulletin of the Seismological Society of America
- 1977
A computer-based system dedicated full time to automatic detection and location of local seismic events in central California has been developed. The system monitors 108 short-period…
High-frequency analysis of seismic background noise as a function of wind speed and shallow depth
- GeologyBulletin of the Seismological Society of America
- 1996
We used a deep (1500 m) cased borehole near the town of Datil in west-central New Mexico to study high-frequency (>1 Hz) seismic noise characteristics. The remote site had very low levels of…
AN AUTOMATIC EVENT DETECTOR AT THE TONTO FOREST SEISMIC OBSERVATORY
- Geology
- 1974
The on‐line operation of an automatic event detector has been evaluated at the Tonto Forest Observatory short‐period seismic array. For 31 seismometers and one fixed threshold, the 90 percent…