August 2023

Using a 120 km long fiber-optic array, with a channel spacing of 4 m, we can see interesting features along the cable length. We show how we can locate a local earthquake recorded on Distributed Acoustic Sensing date and compare it to the locations reported by the two earthquake catalogues in Norway. The ray tracing and grid search procedure used in the localization will be discussed. The simple pre-processing job, used to enhance the signal-to-noise ratio of the data as well as enhance the first-break arrivals used in the localization study, will be presented..

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