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Exploring Local Seismic Detection Capabilities Using Earthquake Triggered and Continuous Dataset Recorded by the Los Alamos Seismic Network

Description: 

Operated by Los Alamos National Laboratory located in Northern New Mexico, the Los Alamos Seismic Network (LASN) has monitored seismicity in the area since 1973. Local seismic monitoring by LASN remains a pertinent resource in understanding the seismic behavior and activity along the Pajarito fault system and Valles Caldera. Starting in 2019, LASN transitioned to recording continuous seismic data across the network. Prior to 2019 the network operated as a triggered system (recording only 10-minute segments of triggered events). As a result, LASN data mostly consists of discontinuous waveform segments across the network.

Since 2010, we have detected and located ~300 local earthquakes and added 11 stations to the LASN network (18 stations total) to extend its monitoring capability. To improve the magnitude of completeness in the LASN earthquake catalog and gain an understanding of the spatial-temporal behavior of seismicity in the local region, we apply a correlation detector to the continuous data. We utilize previously documented seismicity to extract earthquake templates and improve the detection of small magnitude events not previously catalogued. We present the results from the correlation detector and comparisons of detection capabilities between the triggered and continuous data.

Session: Network Seismology: Recent Developments, Challenges and Lessons Learned [Poster]

Type: Poster

Date: 4/20/2023

Presentation Time: 08:00 AM (local time)

Presenting Author: Kevin Kwong

Student Presenter: No

Invited Presentation: 

Authors