Examining Seismicity Surrounding the PE1-A Chemical Explosion With a Dynamic Correlation Processor
Description:
A primary function of seismic monitoring is detecting and characterizing seismic events. Repeating signals and signals that otherwise correlate with each other can provide a wealth of information about an area’s seismic activity. A dynamic correlation processor (DCP) is a useful tool for searching for these kinds of signals. The DCP runs over a continuous stream of data, identifying new waveform patterns by applying power detectors from an STA/LTA algorithm as “boot detectors”. These signals are used to create new detectors and thereafter applied to the data with the bank of detectors growing in time as more new waveform patterns are encountered. In this study we utilize a DCP to investigate possible aftershocks of the PE1-A chemical explosion as well as other seismicity in the vicinity before and after the explosion. Preliminary results find very few aftershocks detected at the nearby geophone stations. An interesting sequence of very small events was observed before the explosion. Future work will include associating detections from the DCP so that newly detected events can be located and characterized.
Session: Advancements in Forensic Seismology and Explosion Monitoring [Poster]
Type: Poster
Date: 4/17/2025
Presentation Time: 08:00 AM (local time)
Presenting Author: Moira
Student Presenter: No
Invited Presentation:
Poster Number: 92
Authors
Moira Pyle Presenting Author Corresponding Author pyle4@llnl.gov Lawrence Livermore National Laboratory |
Ana Aguiar aguiarmoya1@llnl.gov Lawrence Livermore National Laboratory |
PE1 Experiment Team pyle4@llnl.gov https://doi.org/10.2172/2345984 |
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Examining Seismicity Surrounding the PE1-A Chemical Explosion With a Dynamic Correlation Processor
Category
Advancements in Forensic Seismology and Explosion Monitoring