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Rapid station and network quality analysis for temporary deployments

May 8, 2019

Seismic station data quality is commonly defined by metrics such as data completeness or background seismic noise levels in specific frequency bands. However, for temporary networks such as aftershock deployments or induced seismicity monitoring, the most critical metric is often how well the station performs when recording events of interest. A timely measure of station performance can be used for real-time network maintenance and to help make decisions about which stations may need to be moved or are redundant. We develop new event-based methods to assess station and network performance, including estimating network magnitude of completeness, determining station signal-to-noise ratios as a function of earthquake magnitude, and computing relative station amplitudes. At times, a complete catalog of local seismic events may not exist, such as in an aftershock deployment where hundreds to thousands of small earthquakes may be happening and catalog generation efforts cannot keep up. To overcome this, we use an envelope of the average energy recorded by the network to identify events of interest. We find that the log amplitude of events identified using this technique scales linearly with local earthquake magnitudes. This suggests that this approach can be used to determine seismicity rates and detection thresholds.

Publication Year 2019
Title Rapid station and network quality analysis for temporary deployments
DOI 10.1785/0220180365
Authors David C. Wilson, Adam T. Ringler, Tyler Storm, Robert E. Anthony
Publication Type Article
Publication Subtype Journal Article
Series Title Seismological Research Letters
Index ID 70204925
Record Source USGS Publications Warehouse
USGS Organization Geologic Hazards Science Center