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

2026年5月28日(木) 13:45 〜 15:15 コンベンションホール (CH-A) (幕張メッセ国際会議場)

座長:宮澤理稔(京都大学防災研究所)

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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13:45 〜 14:00

[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)

14:00 〜 14:15

[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.

*福島駿¹、篠原雅尚²、谷岡勇市郎^1,3、山中悠資^1,3、跡邊陽太⁴、田中伸一²、大塚宏徳² (1. 北海道大学大学院理学研究院附属地震火山研究観測センター、2. 東京大学地震研究所、3. 北海道大学広域複合災害研究センター、4. 北海道大学大学院理学研究院自然史科学専攻)

14:15 〜 14:30

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

*篠原雅尚¹、Mikael Mazur²、Martin Karrenbach³、Nicolas Fontaine²、Roland Ryf²、David Neilson²、福島駿⁴、山田知朗¹、田中伸一¹、大塚宏徳¹、Kevin Smith⁵、Artem Goncharuk⁵、Bob Clapp⁵ (1. 東京大学地震研究所、2. Nokia Bell Labs、3. Seismics Unusual LLC、4. Faculty of Science, Hokkaido University、5. X-The Moonshot Factory)

14:30 〜 14:45

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

*水谷歩¹、齊藤竜彦¹ (1. 防災科学技術研究所)

14:45 〜 15:00

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

*荒木英一郎¹、横引貴史¹、脇坂佳史²、戸毛邦弘²、飯田大輔²、森彩花²、高橋央²、鬼頭千尋² (1. 海洋研究開発機構、2. NTTアクセスサービスシステム研究所)

15:00 〜 15:15

[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)

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