JpGU Meeting 2025
Session Outline| Solid Earth Sciences (S) | ||||
|---|---|---|---|---|
| Session Sub-category | Technology & Techniques (TT) | |||
| Session ID | S-TT42 | |||
| Session Title | Advancing Earth Science through Optic Fiber Sensing Techniques and Integrated Analysis | |||
| Short Title | Optic Fiber Sensing Techniques | |||
| Date & Time | Oral Session |
PM1-PM2 Thu, 29 MAY | ||
| On-site Poster Coretime |
PM3 Thu. 29 MAY | |||
| Main Convener | Name | Takeshi Tsuji | ||
| Affiliation | Department of Systems Innovation, the University of Tokyo | |||
| Co-Convener 1 | Name | Masatoshi Miyazawa | ||
| Affiliation | Disaster Prevention Research Institute, Kyoto University | |||
| Co-Convener 2 | Name | Eiichiro Araki | ||
| Affiliation | Japan Agency for Marine-Earth Science and Technology | |||
| Co-Convener 3 | Name | Kentaro Emoto | ||
| Affiliation | Graduate School of Science, Kyushu University | |||
| Session Language | J | |||
| Scope (Session Description) |
Optic fiber sensing techniques for measuring strain, vibration, and thermal data are utilized not only in engineering and exploration geophysics as a developer but also in various research fields of earth science, including seismology, geodesy, and volcanology. Techniques such as DAS, DSS, and DTS provide high-performance capabilities, enabling high-density and highly sensitive measurements for onshore and offshore earth science observations that surpass conventional measurements. On the other hand, challenges remain in performing integrated analysis of optical fiber sensing strain data alongside velocity and acceleration seismographs. The goals of this session are to contribute to the advancement of earth science by sharing and discussing ideas related to observations, data analysis methods, and broad applications, which can mutually help enhance each study with respect to optic fiber sensing. We will also explore how fiber optic sensing technology can address future challenges in geoscience and its potential to initiate new research areas, such as the development of next-generation observation networks and automated data analysis technologies. |
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| Session Format | Orals and Posters session | |||
| Co-sponsorship | Partner Union(s) | - | ||
| JpGU Society Member(s) | - | |||
| International Collaborative Society | - | |||
| Organizations Other Than JpGU Society Members | - | |||
| Time | Presentation No | Title | Presenter |
|---|---|---|---|
| Oral Presentation May 29 PM1 | |||
| 13:45 - 14:00 | STT42-01 | Towards Long-Reach Distributed Fiber-Optic Sensing Over Active Repeated Subsea Telecom Cables | Mikael Mazur |
| 14:00 - 14:15 | STT42-02 | Potential and Challenges of Global Seafloor Optical Fiber Sensing | Eiichiro Araki |
| 14:15 - 14:30 | STT42-03 | Comparison of teleseismic strain fields obtained by array analysis of seismometers and direct measurement of strainmeters at seafloor and deep seafloor observatory | Shuhei Tsuji |
| 14:30 - 14:45 | STT42-04 | Development of a Quasi-Real-Time Analysis System for Seismic Activity in the Shallow Subduction Zone Using Seafloor DAS and OBS Records | Akiko Toh |
| 14:45 - 15:00 | STT42-05 | Observation of low frequency earthquakes by distributed acoustic sensing around the Tsugaru Strait | Satoru Baba |
| 15:00 - 15:15 | STT42-06 | Estimation of Volcanic Earthquake Source Direction in Tonga DAS Observations | Shunsuke Nakao |
| Oral Presentation May 29 PM2 | |||
| 15:30 - 15:45 | STT42-07 | Illuminating a Small Earthquake Cluster with DAS Arrays in Central Shikoku, Japan | Takumi Takahashi |
| 15:45 - 16:00 | STT42-08 | Development of a Ground Monitoring Method Using Optical Fiber DAS and Microtremor Survey (No.3) | Hiroyuki Fujiwara |
| 16:00 - 16:15 | STT42-09 | Evaluation of DAS Response to Strong Ground Motion Using Full-Scale Shaking Tests at E-Defense | Satoshi Katakami |
| 16:15 - 16:30 | STT42-10 | Subsurface Reflection Imaging from offshore DAS Observations: Autocorrelation Analysis of Natural Earthquakes | Takeshi Tsuji |
| 16:30 - 16:45 | STT42-11 | Relationship between the detailed site amplification estimated from DAS observation and near surface structure | Kohei Yonemori |
| 16:45 - 17:00 | STT42-12 | Development of GUI software for picking up seismic phases from distributed acoustic sensing records | Masanao Shinohara |
| Presentation No | Title | Presenter |
|---|---|---|
| Poster Presentation May 29 PM3 | ||
| STT42-P01 | Seismic exploration around the Mori Geothermal Power Plant in Hokkaido using optical fibers by two geothermal boreholes | Junzo Kasahara |
| STT42-P02 | FEM simulation of tidal responses of pore-pressure and strain records at a deep seafloor borehole observatory | Shuhei Tsuji |
| STT42-P03 | Focal mechanism estimation using Distributed Acoustic Sensing: A comparative analysis of S/P amplitude ratios and polarity flips | Yuki Funabiki |
| STT42-P04 | High sensitivity simultaneous measurement of sea surface vector current and temperature based on polarization interference of Panda fiber | Yu li |
| STT42-P05 | Simulation to examine the effectiveness of optical hybrid submarine cable systems | Tomokazu Kurihara |
| STT42-P06 | DAS field data using subsea fiber optic cable offshore Kamaishi | Yuichi Machijima |
| STT42-P07 | Evaluation of noise level in Tonankai cable DAS observations | Yasuhiro Yoshida |
| STT42-P08 | Deep well seismic observation using existing optical fiber cable for measurement and DAS-VSP analysis | Yasuhiro Asai |
| STT42-P09 | Thermal Characteristics of the Milun Fault Using Borehole Optical Fiber Sensing | Hsuan-Ting Lai |
| STT42-P10 | A comparison of acceleration and strain rate waveforms using wave propagation simulation | Shonosuke Kawashima |
| STT42-P11 | Experimental Study on the Possibility of Observing Fireworks by DAS Using Overhead Lines | Kazuya Yamakawa |