A Caltech Library Service

Geolocalization of Large-Scale DAS Channels Using a GPS-Tracked Moving Vehicle

Biondi, Ettore and Wang, Xin and Williams, Ethan F. and Zhan, Zhongwen (2023) Geolocalization of Large-Scale DAS Channels Using a GPS-Tracked Moving Vehicle. Seismological Research Letters, 94 (1). pp. 318-330. ISSN 0895-0695. doi:10.1785/0220220169.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Geolocalization of distributed acoustic sensing (DAS) array channels represents a crucial step whenever the technology is deployed in the field. Commonly, the geolocalization is performed using point-wise active-source experiments, known as tap tests, conducted in the vicinity of the recording fiber. However, these controlled-source experiments are time consuming and greatly diminish the ability to promptly deploy such systems, especially for large-scale DAS experiments. We present a geolocalization methodology for DAS instrumentation that relies on seismic signals generated by a geotracked vehicle. We demonstrate the efficacy of our workflow by geolocating the channels of two DAS systems recording data on dark fibers stretching approximately 100 km within the Long Valley caldera area in eastern California. Our procedure permits the prompt calibration of DAS channel locations for seismic-related applications such as seismic hazard assessment, urban-noise monitoring, wavespeed inversion, and earthquake engineering. We share the developed set of codes along with a tutorial guiding users through the entire mapping process.

Item Type:Article
Related URLs:
URLURL TypeDescription
Biondi, Ettore0000-0002-3305-0982
Williams, Ethan F.0000-0002-6471-4497
Zhan, Zhongwen0000-0002-5586-2607
Additional Information:The authors would like to thank OptaSense for the support provided for this calibration experiment. In particular, the authors thank Martin Karrenbach, Victor Yartsev, and Vlad Bogdanov. The authors also thank the California Broadband Cooperative for providing access to the Digital 395 telecommunication fibers. The authors also thank James Atterholt and Jiaxuan Li for their insightful suggestions. Finally, the authors would like to thank Ariel Lellouch and two anonymous reviewers for their careful reading of their article and their many constructive comments and suggestions. This work is supported by National Science Foundation (NSF) Faculty Early Career Development Program (CAREER) Award Number 1848166, the Resnick Institute of Sustainability, and the Gordon and Betty Moore Foundation.
Group:Division of Geological and Planetary Sciences, Resnick Sustainability Institute, Seismological Laboratory
Funding AgencyGrant Number
Resnick Sustainability InstituteUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20230120-123072300.2
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118865
Deposited By: Research Services Depository
Deposited On:30 Jan 2023 18:27
Last Modified:30 Jan 2023 18:27

Repository Staff Only: item control page