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Articles | Volume 12, issue 6
Articles | Volume 12, issue 6
https://doi.org/10.5194/se-12-1421-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/se-12-1421-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 6
Research article
 | 
17 Jun 2021
Research article |  | 17 Jun 2021

Strain to ground motion conversion of distributed acoustic sensing data for earthquake magnitude and stress drop determination

Itzhak Lior, Anthony Sladen, Diego Mercerat, Jean-Paul Ampuero, Diane Rivet, and Serge Sambolian

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Short summary
The increasing use of distributed acoustic sensing (DAS) inhibits the transformation of optical fibers into dense arrays of seismo-acoustic sensors. Here, DAS strain records are converted to ground motions using the waves' apparent velocity. An algorithm for velocity determination is presented, accounting for velocity variations between different seismic waves. The conversion allows for robust determination of fundamental source parameters, earthquake magnitude and stress drop.
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Special issue
Fibre-optic sensing in Earth sciences