S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms
Links
- More information: Publisher Index Page (via DOI)
- Open Access Version: Publisher Index Page
- Download citation as: RIS | Dublin Core
Abstract
Distributed acoustic sensing (DAS), which transforms a fiber optic cable into an array of high frequency strainmeters, has the potential to help us characterize earthquakes with a dense sampling of measurements. While earthquake focal mechanisms are frequently determined using P-wave polarities and S/P amplitude ratios with inertial seismometers, the dense sampling of DAS over potentially large portions of the focal sphere can aid our solutions. Here, we consider ∼200 regional earthquakes and thousands of S/P measurements on a DAS cable colocated with a network of inertial seismometers near Arcata, California. We demonstrate the S/P ratio measurements made on DAS are similar to those made on the inertial seismometers and can be used to constrain focal mechanism solutions.
Suggested Citation
Skoumal, R.J., Atterholt, J.W., Barbour, A.J., Hardebeck, J.L., 2025, S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms: Geophysical Research Letters, v. 52, no. 20, e2025GL116373, 8 p., https://doi.org/10.1029/2025GL116373.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | S/P amplitude ratios with Distributed Acoustic Sensing and application to earthquake focal mechanisms |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2025GL116373 |
| Volume | 52 |
| Issue | 20 |
| Publication Date | October 15, 2025 |
| Year Published | 2025 |
| Language | English |
| Publisher | American Geophysical Union |
| Contributing office(s) | Earthquake Science Center, Geologic Hazards Science Center - Seismology / Geomagnetism |
| Description | e2025GL116373, 8 p. |
| Country | United States |
| State | California |