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Home > USGS Earthquake Science Center Seminars > DAS for EEW: what about the dynamic range?
Podcast: USGS Earthquake Science Center Seminars
Episode:

DAS for EEW: what about the dynamic range?
Category: Science & Medicine
Duration: 01:00:00
Publish Date: 2024-10-09 17:30:00
Description:

Martijn van den Ende, Université Côte d'Azur

Already for several years it has been suggested that Distributed Acoustic Sensing (DAS) could be a convenient, low-cost solution for Earthquake Early Warning (EEW). Several studies have investigated the potential of DAS in this context, and demonstrated their methods using small local earthquakes. Unfortunately, DAS has a finite dynamic range that is easily exceeded in the near-field of large earthquakes, which severely hampers any EEW efforts. In this talk, I will present a detailed analysis of the dynamic range, and how it impacts EEW: where does it come from? What can we do when the dynamic range is exceeded? And is there still hope for DAS-based EEW systems?
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