Articles | Volume 12, issue 6
Solid Earth, 12, 1421–1442, 2021
https://doi.org/10.5194/se-12-1421-2021

Special issue: Fibre-optic sensing in Earth sciences

Solid Earth, 12, 1421–1442, 2021
https://doi.org/10.5194/se-12-1421-2021

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 et al.

Data sets

Underwater DAS Detection Itzhak Lior https://doi.org/10.17605/OSF.IO/4BJPH

DAS Simulations in underwater basin Itzhak Lior https://doi.org/10.17605/OSF.IO/98CNK

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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.