Wissenschaft und Technologie Science et technologie Scienza e tecnologia Ciencia y tecnología Science and technology 2025-01-01T00:00:00 SMITH Jack Lee [University of Edinburgh, ] https://orcid.org/0000-0002-2935-625X#4962 SMITH Jack Lee [University of Edinburgh, ] Zenodo N/A D'AMICO Salvatore [Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy] D'AMICO Salvatore [Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy] https://orcid.org/0009-0004-5940-1316#3815 Zenodo ingv http://www.ingv.it/it/ v2.0.0 This is the raw data to accompany the manuscript 'Azimuthal Sensitivity and Spatio-temporal Decimation of Data from Distributed Acoustic Sensing on Submarine Cables for Offshore Earthquake Early Warning Systems' (https://www.nature.com/articles/s41598-025-29234-5). The data are decimated from the original 1000 Hz to 10 Hz. The five time spans correspond to five regional earthquakes:nn22nd May 22:51:59 - M4 Croatia2nd June 23:17:27 - M5.8 Greece-Turkey5th June 02:22:46 - M4.1 Algeria10th June 03:10:47 - M3.5 Sicily11th June 22:54:41 - M4.3 LibyannIn addition, data from seismic station IV.EBDA are provided here for each event as .mseed files for convenience, though were not collected by the authors and are taken from the INGV data archive (https://eida.ingv.it/en/getdata); see citation below.nnAll times in UTC.nnThe field campaign was carried out as part of project SEALS (Submarine noise-Evaluation & Analytics using Low-cost Sustainable-sensing), which, in addition to the research leading to these results, received funding from EMSO ERIC through the Physical Access Programme, Grant Agreement No. EE-PA_202306_01. The work was supported by projects funded by NERC (NE/Z000408/1; NE/Y003365/1; NE/Y005589/1) and EPSRC-DTP (EP/W524384/1). The authors would like to thank SLB for their student support as part of the EPSRC-DTP program. https://orcid.org/0000-0001-6220-3047#4965 SPINGYS Carl [University of Edinburgh, ] SPINGYS Carl [University of Edinburgh, ] ambiente LYTHGOE Karen [University of Edinburgh, ] https://orcid.org/0000-0002-7642-6900#4964 LYTHGOE Karen [University of Edinburgh, ] WARD NEALE Jennifer [National Oceanography Centre (NOC), ] WARD NEALE Jennifer [National Oceanography Centre (NOC), ] https://orcid.org/0000-0003-1476-4944#4966 https://orcid.org/0000-0003-1222-1583#4967 CURTIS Andrew [Swiss Federal Institute of Technology (ETH), Switzerland; University of Edinburgh, ] CURTIS Andrew [Swiss Federal Institute of Technology (ETH), Switzerland; University of Edinburgh, ] BELAL Mohammad [National Oceanography Centre (NOC), ; University of Southampton, ] BELAL Mohammad [National Oceanography Centre (NOC), ; University of Southampton, ] https://orcid.org/0000-0001-5175-3158#4963 ingv Istituto Nazionale di Geofisica e Vulcanologia 10.5281/zenodo.16912793 EMBRIACO Davide [Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy] https://orcid.org/0000-0001-7943-7341#177 EMBRIACO Davide [Istituto Nazionale di Geofisica e Vulcanologia (INGV), Italy] ingv_1176 INGV INGV 2025-12-23T00:00:00 Raw Data from the EMSO Western Ionian Sea Facility DAS Array, Offshore Catania POLYGON ((15.1012 37.4840, 15.1007 37.5031, 15.4616 37.5274, 15.4620 37.5087, 15.1012 37.4840)) {"type":"Polygon","coordinates":[[[15.101221650838854,37.48397562575471],[15.10072275996208,37.503143629482096],[15.461639463901523,37.527357824834],[15.462049841880798,37.50868966421436],[15.101221650838854,37.48397562575471]]]}