Preliminary Analysis of Distributed Acoustic Sensing (DAS) Data Using a Submarine Fiber-Optic Cable Across the North Anatolian Fault

作者：Ji Zhang, Aitaro Kato, Ahmet Anıl Dindar, Wei Wang, Shigeki Nakagawa, Yosuke Aoki, Masanao Shinohara, Yoshiyuki Kaneda, Süleyman Tunç · 发表于：Seismological Research Letters · 年份：2025 · DOI：10.1785/0220250049 · 被引用次数：3 · 研究领域：Seismic Waves and Analysis、Seismic Imaging and Inversion Techniques、earthquake and tectonic studies

Abstract Distributed acoustic sensing (DAS) is an emerging technique that uses fiber-optic cables to detect ground vibrations. DAS can record vibrations similarly to a dense network of seismic stations, aiding earthquake detection and the analysis of subsurface structures. Although terrestrial DAS setups are relatively accessible, there are few submarine optical cables available for use. As a result, most DAS data currently come from terrestrial cables. We started monitoring earthquakes using a communication cable that crosses the North Anatolian fault in the Marmara Sea for the first time. This cable crosses a bay that contains a trench that is related to deformation along the North Anatolian fault, creating a unique and complex observational environment. We present overviews of seismic data from local, regional, and teleseismic events retrieved using the new DAS system and make these data publicly available. The analysis of waveforms from nearby seismic stations and DAS instruments highlights the potential seismic applications of DAS data in the Marmara Sea.