“…Also, the availability of existing telecom dark fibers allows to investigate environments usually difficult to monitor, such as oceanic seafloors, volcanic flanks, and geothermal areas, over distances between a few and hundreds of kilometers (e.g., Currenti et al., 2021; Sladen et al., 2019; Tsuji et al., 2021). In the recent years, DAS technology has been successfully applied to seismology for earthquake location (Nishimura et al., 2021; Piana Agostinetti et al., 2022; Sladen et al., 2019), focal mechanism determination (Li et al., 2023), seismic velocity estimation (Lellouch et al., 2019) and site effect characterization (Ajo‐Franklin et al., 2019; Spica et al., 2020).…”