DOI: 10.1785/bssa0650061631. On the estimation of seismic detection thresholds

On the estimation of seismic detection thresholds

10.1785/bssa0650061631

Crossref journal-article

Seismological Society of America (SSA)

Bulletin of the Seismological Society of America (790)

Abstract

abstract The incremental detection capability of a seismic station, i.e., the probability of detection as a function of event magnitude, is usually estimated either by using the exponential magnitude-frequency relationship of earthquakes (the recurrence method) or by comparing the station detections to an independent reference system (the direct method). The recurrence method usually yields significantly lower 90 per cent thresholds than the direct method, while a hypothetical “true” threshold would lie between these values. This is explained theoretically as resulting from the global variance of observed signal amplitudes for a given seismic event. A maximum likelihood estimation procedure is developed for the direct method, and approximate confidence limits on the estimated detection thresholds are derived. The two estimation techniques are applied to determine the event detection capability of the NORSAR array for the Japan-Kuriles-Kamchatka region, and the results are related to previously published estimates.

Authors 1

F. Ringdal (first)

References 15 Referenced 57

{'key': '2021092118230482800_BIB1', 'first-page': '237', 'article-title': 'Maximum likelihood estimate of b in the formula log N = a - bm and its confidence limits', 'volume': '43', 'author': 'Aki', 'year': '(1965)', 'journal-title': 'Bull. Earthquake Res. Inst., Tokyo Univ.'} / Bull. Earthquake Res. Inst., Tokyo Univ. / Maximum likelihood estimate of b in the formula log N = a - bm and its confidence limits by Aki ((1965))
10.1785/BSSA0643-10637 / Bull. Seism. Soc. Am. / Analysis of the operational capabilities for detection and location of seismic events at NORSAR by Bungum ((1974))
{'key': '2021092118230482800_BIB3', 'volume-title': 'Mathematical Methods of Statistics', 'author': 'Cramer', 'year': '(1945)'} / Mathematical Methods of Statistics by Cramer ((1945))
{'key': '2021092118230482800_BIB4', 'volume-title': 'Probit Analysis', 'author': 'Finney', 'year': '(1952)', 'edition': '2nd ed.'} / Probit Analysis by Finney ((1952))
10.1785/BSSA0570040747 / Bull. Seism. Soc. Am. / Estimating earthquake magnitude by Freedman ((1967))
Gerlach G. S. Goforth T. T. Seymour F. F. Swanson J. G. (1966). Estimates of the detection capability of four VELA-UNIFORM seismological observatories, Technical Report No. 66-1, Teledyne Geotech, Garland, Texas.
{'key': '2021092118230482800_BIB7', 'article-title': 'Long period array processing development', 'volume-title': 'Final Report', 'author': 'Harley', 'year': '(1971)'} / Final Report / Long period array processing development by Harley ((1971))
{'key': '2021092118230482800_BIB8', 'article-title': 'On the estimation of body-wave magnitude', 'volume-title': 'Technical Report to AFOSR', 'author': 'Herrin', 'year': '(1972)'} / Technical Report to AFOSR / On the estimation of body-wave magnitude by Herrin ((1972))
Lacoss R. T. (1969). A large population LASA discrimination experiment, Mass. Inst. Tech. Lincoln Laboratories, Technical Note 24. (10.21236/AD0700322)
Lacoss R. T. Kelly E. J. (1969). Estimation of seismicity and network detection capability, Mass. Inst. Tech. Lincoln Laboratories, Technical Note 41.
Lambert D. G. Prahl S. R. Strauss A. C. (1973). Evaluation of the noise characteristics and the detection and discrimination capabilities of the Very Long Period Experiment (VLPE) single stations and the VLPE network, Report No. ALEX(01)-STR-73-14, Texas Instruments Incorporated, Dallas, Texas.
Ringdal F. (1974). Estimation of seismic detection thresholds, Report No. ALEX(01)-TR-74-02, Texas Instruments Incorporated, Dallas, Texas. (10.21236/ADA001100)
Ringdal F. Whitelaw R. L. (1973). Evaluation of the Norwegian Short Period Array, Final Report, Report No. ALEX(01)-STR-73-11, Texas Instruments Incorporated, Dallas, Texas.
10.1785/BSSA0620020435 / Bull. Seism. Soc. Am. / Magnitude from short-period P-wave data by Veith ((1972))
von Seggern D. Blandford R. (1974). Seismic threshold determination, Report No. SDAC-TR-74-3Teledyne Geotech, Alexandria, Virginia.

Dates

Type	When
Created	3 years, 11 months ago (Sept. 21, 2021, 2:53 p.m.)
Deposited	3 years, 11 months ago (Sept. 21, 2021, 2:54 p.m.)
Indexed	3 weeks, 3 days ago (Aug. 7, 2025, 4:52 p.m.)
Issued	49 years, 9 months ago (Dec. 1, 1975)
Published	49 years, 9 months ago (Dec. 1, 1975)
Published Online	49 years, 9 months ago (Dec. 1, 1975)
Published Print	49 years, 9 months ago (Dec. 1, 1975)

Funders 0

None

BibTeX

@article{Ringdal_1975, title={On the estimation of seismic detection thresholds}, volume={65}, ISSN={0037-1106}, url={http://dx.doi.org/10.1785/bssa0650061631}, DOI={10.1785/bssa0650061631}, number={6}, journal={Bulletin of the Seismological Society of America}, publisher={Seismological Society of America (SSA)}, author={Ringdal, F.}, year={1975}, month=dec, pages={1631–1642} }

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