Evaluation of Station Performance of the Idaho National Laboratory Seismic Monitoring Network Using Network Detection Thresholds
Description:
The Idaho National Laboratory (INL) Seismic Monitoring Network is located in Eastern Idaho and monitors a portion of the Intermountain Seismic Belt. It has been in place for 50 years and has undergone several major changes. The most recent of which has been the transition to the Antelope real-time acquisition system and the implementation of automatic phase picking algorithms to aid in analysis. This study discusses the efforts to evaluate the performance of the INL seismic monitoring network (and other surrounding stations) using the new real-time acquisition system. The method outlined by Wilson et al. (2021) is used to develop an empirical relationship between the observability of local earthquakes as a function of magnitude and distance. This relationship is used to produce detection thresholds for both P and S waves for all stations of interest. The INL seismic network has two main goals: monitor tectonic and volcanic related events and measure ground motions for input into seismic hazard analysis. Because of these two overall objectives, several seismic stations are installed near critical facilities and therefore are not as quiet as stations which are used primarily for earthquake detection. This is reflected in their detection thresholds, which are much smaller for stations near facilities. This study also shows “holes” in the monitoring network where the detection of smaller earthquakes is highly dependent on sparsely placed seismic stations. The results of this study will be used to govern plans for expansion of earthquake monitoring in Idaho and the surrounding region and to fine tune the detection thresholds for individual stations.
Session: Network Seismology: Recent Developments, Challenges and Lessons Learned [Poster Session]
Type: Poster
Date: 5/1/2024
Presentation Time: 08:00 AM (local time)
Presenting Author: Blaine
Student Presenter: No
Invited Presentation:
Authors
Blaine Bockholt Presenting Author Corresponding Author blaine.bockholt@inl.gov Idaho National Laboratory |
John Sandru john.sandru@inl.gov Idaho National Laboratory |
|
|
|
|
|
|
|
Evaluation of Station Performance of the Idaho National Laboratory Seismic Monitoring Network Using Network Detection Thresholds
Session
Network Seismology: Recent Developments, Challenges and Lessons Learned