During the past few years, distributed acoustic sensing (DAS) has become an invaluable tool for recording high-fidelity seismic wavefields with great spatiotemporal resolutions. However, the considerable amount of data generated during DAS experiments limits their distribution with the broader scientific community. Such a bottleneck inherently slows down the pursuit of new scientific discoveries in geosciences. Here, we introduce PubDAS—the first large-scale open-source repository where several DAS datasets from multiple experiments are publicly shared. PubDAS currently hosts eight datasets covering a variety of geological settings (e.g., urban centers, underground mines, and seafloor), spanning from several days to several years, offering both continuous and triggered active source recordings, and totaling up to ∼90 TB of data. This article describes these datasets, their metadata, and how to access and download them. Some of these datasets have only been shallowly explored, leaving the door open for new discoveries in Earth sciences and beyond.

Summary. Using continuous seismic data from newly available broadband stations in Mexico and Central America we have obtained group and phase velocity maps of

The 2020–2021 Santa Fe seismic sequence is the first well‐instrumented and widely felt seismic series occurred in the Granada basin during the Spanish instrumental period since the 1979 Fuente Vaqueros seismic series and the 1955–1956 Armilla and Purchil destructive earthquakes. It began in December 2020 with an $Mw$ 3.7 earthquake followed by five $Mw>4$ earthquakes between 23 and 28 January 2021 and a long sequence of aftershocks during the next four months. Over six months later, on 12 August, another large earthquake of magnitude 4.5 stroke the area to the southwest of Santa Fe city where the previous shocks occurred. This seismic sequence offers a unique opportunity to study the seismic activity in this region—one of the most seismically active zones and with the highest seismic hazard in the Iberian Peninsula. The wide station coverage and good‐quality data available allows us to perform high‐precision absolute and relative relocations and to obtain the seismic moment tensor (MT) and focal mechanism of the largest earthquakes. Relocation results reveal a clustered distribution of the seismicity between Santa Fe and Pinos Puente faults, focused on a depth range between 2 and 5 km. Hypocenters follow a near‐vertical pattern, and $Mw>4$ events display a northeast–southwest‐dipping trend that seems to fit Pinos Puente fault plane. However, regional MT solutions show predominant normal fault mechanisms, with minor oblique component but with strike and dip orientations more compatible to Santa Fe fault. To explain this apparent discrepancy with the known mapped active faults, we propose a change in dip of Santa Fe fault plane from near vertical at shallow depths, bended below the first kilometers, to a possible fault splay in depth compatible with the known geologic structure of the area.

During February 2023, a total of 32 individual distributed acoustic sensing (DAS) systems acted jointly as a global seismic monitoring network. The aim of this Global DAS Month campaign was to coordinate a diverse network of organizations, instruments, and file formats to gain knowledge and move toward the next generation of earthquake monitoring networks. During this campaign, 156 earthquakes of magnitude 5 or larger were reported by the U.S. Geological Survey and contributors shared data for 60 min after each event’s origin time. Participating systems represent a variety of manufacturers, a range of recording parameters, and varying cable emplacement settings (e.g., shallow burial, borehole, subaqueous, and dark fiber). Monitored cable lengths vary between 152 and 120,129 m, with channel spacing between 1 and 49 m. The data has a total size of 6.8 TB, and are available for free download. Organizing and executing the Global DAS Month has produced a unique dataset for further exploration and highlighted areas of further development for the seismological community to address.