[S-TT48] Advancing Earth Science through Fiber Optic Sensing Techniques and Integrated Analysis

Thu. May 28, 2026 1:45 PM - 3:15 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

Chairperson:Miyazawa Masatoshi(Disaster Prevention Research Institute, Kyoto University)

Fiber optic sensing is revolutionizing Earth science by transforming telecommunication cables into dense, multipurpose sensor arrays. Techniques such as Distributed Acoustic/Strain Sensing (DAS/DSS) and Distributed Temperature Sensing (DTS) provide unprecedented spatial resolution for monitoring vibration, strain, and temperature, enabling high-fidelity observations that surpass conventional point measurements in seismology, geodesy, and volcanology. However, significant challenges remain in the integrated analysis of this novel strain data with traditional seismic (velocity/acceleration) and geodetic measurements, as well as in the technical difficulty of maintaining a high signal-to-noise ratio over long-distance cables. This session invites contributions that address such challenges and advance the use of fiber optic sensing. We seek presentations on innovative observation strategies for both on-shore and off-shore environments; novel data analysis methods, including machine learning for handling massive datasets; and compelling case studies that deepen our understanding of earthquakes, volcanoes, and tectonics. The goal is to foster collaboration to overcome current hurdles and pioneer the next generation of integrated seismic and geodetic observation networks, thereby fully unlocking the potential of fiber optic technologies to reveal new insights into Earth science.

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1:45 PM - 2:00 PM

[STT48-01] Distributed acoustic sensing for high-resolution subsurface imaging and earthquake monitoring

★Invited Papers

*Ettore Biondi¹, Jiaxuan Li², Gabrielle Tepp³, Allen L Husker³, Zhongwen Zhan³ (1. Stanford University, 2. University of Houston, 3. California Institute of Technology)

2:00 PM - 2:15 PM

[STT48-02] Validation of distributed acoustic sensing for tsunami monitoring using simultaneous pressure gauge observations: a case study of the tsunami by 2025 Kamchatka earthquake.

*Shun Fukushima¹, Masanao Shinohara², Yuichiro Tanioka^1,3, Yusuke Yamanaka^1,3, Yota Atobe⁴, Shinichi S. Tanaka², Hironori Otsuka² (1. Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University., 2. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 3. Center for Natural Hazards Research, Hokkaido University, Sapporo, Hokkaido, Japan, 4. Department of Natural History Sciences, Graduate School of Science, Hokkaido University, Hokkaido, Japan.)

2:15 PM - 2:30 PM

[STT48-03] Simultaneous seismic observation by DAS and accelerometers using off-Sanriku seafloor cable system without dark fiber

*Masanao Shinohara¹, Mikael Mazur², Martin Karrenbach³, Nicolas K. Fontaine², Roland Ryf², David T. Neilson², Shun Fukushima⁴, Tomoaki Yamada¹, Shinichi S. Tanaka¹, Hironori Otsuka¹, Kevin Smith⁵, Artem Goncharuk⁵, Bob Clapp⁵ (1. Earthquake Research Institute, University of Tokyo, 2. Nokia Bell Labs, 3. Seismics Unusual LLC, 4. Faculty of Science, Hokkaido University, 5. X-The Moonshot Factory)

2:30 PM - 2:45 PM

[STT48-04] Numerical experiments of tsunami-induced crustal strain: towards fiber optic sensing observation

*Ayumu Mizutani¹, Tatsuhiko Saito¹ (1. National Research Institute for Earth Science and Disaster Resilience)

2:45 PM - 3:00 PM

[STT48-05] Distributed Fiber-Optic Sensing on a Telecommunication Cable in the Tokara Islands Region in the Vicinity of Earthquake Swarm Sources

*Eiichiro Araki¹, Takashi Yokobiki¹, Yoshifumi Wakisaka², Kunihiro Toge², Daisuke Iida², Ayaka Mori², Hiroshi Takahashi², Chihiro Kito² (1. Japan Agency for Marine-Earth Science and Technology, 2. NTT Access Network Service Systems Laboratories)

3:00 PM - 3:15 PM

[STT48-06] Integrated Seismic Observations of the Marmara Sea from Distributed Acoustic Sensing (DAS) and Ocean-Bottom Seismometers (OBS)

*JI ZHANG¹, Aitaro Kato¹, Ahmet Anil Dindar², Wei Wang^3,4, Tugce Ergun⁵, Nurcan Meral Ozel⁵, Yojiro Yamamoto⁶, Narumi Takahashi⁷, Yoshiyuki Kaneda⁸ (1. Earthquake Research Institute, the University of Tokyo, 2. MARTEST Research and Training Center, Gebze Technical University, 3. Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, 4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, 5. Bogazici University Kandilli Observatory and Earthquake Research Institute Regional Earthquake-Tsunami Monitoring Center, 6. Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology, 7. National Research Institute for Earth Science and Disaster Resilience, 8. IECMS, Kagawa University)

Session information