Towards the Inclusion of Distributed Acoustic Sensing in Earthquake Monitoring and Early Warning Operations
Description:
Distributed Acoustic Sensing (DAS) instrumentation deployed on existing telecommunications fiber cables has emerged as a highly effective tool for seismological applications. Its unique capability to convert extensive lengths of fibers into dense seismic arrays offers unparalleled observational advantages compared to conventional seismic stations. While substantial progress has been made in utilizing DAS data for earthquake science, considerable challenges persist when it comes to continuous earthquake monitoring and real-time data processing algorithms.
Considering the ever-expanding fiber network both onshore and offshore, widespread adoption of DAS has the potential to revolutionize earthquake detection and enhance early warning capabilities. Here, we describe how we are taking the first steps toward the inclusion of DAS data within seismic network operations, from providing additional constraints to earthquake detection and localization to improving early warning performance. We start by highlighting how metadata standards are employed to enable the usage of streamed DAS channels within existing network monitoring procedures. We illustrate how novel machine-learning approaches combined with efficient processing algorithms enable the incorporation of DAS data within existing seismic network systems as well as the potential definition of the next generation of monitoring and early warning tools. Specifically, we employed PhaseNet-DAS to fully exploit the high-spatial density nature of DAS to accurately pick earthquake arrival times. Finally, we demonstrate how high-performance computing processing, picking (i.e., PhaseNet-DAS), and localization tools can enable real-time earthquake detection and early warning.
Session: Network Seismology: Recent Developments, Challenges and Lessons Learned - II
Type: Oral
Date: 5/1/2024
Presentation Time: 05:30 PM (local time)
Presenting Author: Ettore
Student Presenter: No
Invited Presentation:
Authors
Ettore Biondi Presenting Author Corresponding Author ebiondi@caltech.edu California Institute of Technology |
Jessie Saunders jsaunder@caltech.edu California Institute of Technology |
Gabrielle Tepp gtepp@caltech.edu California Institute of Technology |
Ellen Yu eyu@caltech.edu California Institute of Technology |
Rayomand Bhadha rayo@caltech.edu California Institute of Technology |
Aparna Bhaskaran aparnab@caltech.edu California Institute of Technology |
Prabha Acharya pacharya@caltech.edu California Institute of Technology |
Zhongwen Zhan zwzhan@caltech.edu California Institute of Technology |
Allen Husker ahusker@caltech.edu California Institute of Technology |
Towards the Inclusion of Distributed Acoustic Sensing in Earthquake Monitoring and Early Warning Operations
Category
Network Seismology: Recent Developments, Challenges and Lessons Learned