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Repeatability of testing a small broadband sensor in the Albuquerque seismological laboratory underground vault

Adam T. Ringler, Austin A. Holland and D. C. Wilson
Repeatability of testing a small broadband sensor in the Albuquerque seismological laboratory underground vault
Bulletin of the Seismological Society of America (April 2017) 107 (3): 1557-1563

Abstract

Variability in seismic instrumentation performance plays a fundamental role in our ability to carry out experiments in observational seismology. Many such experiments rely on the assumed performance of various seismic sensors as well as on methods to isolate the sensors from nonseismic noise sources. We look at the repeatability of estimating the self-noise, midband sensitivity, and the relative orientation by comparing three collocated Nanometrics Trillium Compact sensors. To estimate the repeatability, we conduct a total of 15 trials in which one sensor is repeatedly reinstalled, alongside two undisturbed sensors. We find that we are able to estimate the midband sensitivity with an error of no greater than 0.04% with a 99th percentile confidence, assuming a standard normal distribution. We also find that we are able to estimate mean sensor self-noise to within + or -5.6 dB with a 99th percentile confidence in the 30-100-s-period band. Finally, we find our relative orientation errors have a mean difference in orientation of 0.0171 degrees from the reference, but our trials have a standard deviation of 0.78 degrees . Electronic Supplement: Table of dates of the trials used as well as Q-Q plots for the statistics collected from the sensor tests.


ISSN: 0037-1106
EISSN: 1943-3573
Coden: BSSAAP
Serial Title: Bulletin of the Seismological Society of America
Serial Volume: 107
Serial Issue: 3
Title: Repeatability of testing a small broadband sensor in the Albuquerque seismological laboratory underground vault
Affiliation: U. S. Geological Survey, Albuquerque Seismological Laboratory, Albuquerque, NM, United States
Pages: 1557-1563
Published: 20170425
Text Language: English
Publisher: Seismological Society of America, Berkeley, CA, United States
References: 23
Accession Number: 2017-039886
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N34°52'00" - N35°12'00", W107°15'00" - W106°10'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201722
Program Name: USGSOPNon-USGS publications with USGS authors
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