| Presentation | 2021-10-14 A Consideration of Seismic Detection with Distributed Acoustic Sensor using Image Processing and Recognition Takahiro Arioka, Kentaro Nakamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Distributed acoustic sensor (DAS) observes the intensity and phase of Rayleigh backscattered light to measure the strain caused along with the optical fiber at intervals of several meters. In this article, we analyzed DAS measurement data performed from November 8 to December 2, 2019, using the dark fiber of the Sanriku offshore optical communication cable for the submarine earthquake and tsunami observation system owned by the Earthquake Research Institute, the University of Tokyo for seismic detection. We utilized an image processing (Hough transform) and recognition (Convolutional Neural Network) method using images obtained by converting the vibration data into a frequency-wavenumber spectrum. The accuracy was 94.7%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fiber Sensing / Distributed Acoustic Sensing / Seismic Observation / Hough transform / Convolutional Neural Network |
| Paper # | OFT2021-42 |
| Date of Issue | 2021-10-07 (OFT) |
| Conference Information | |
| Committee | OFT |
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| Conference Date | 2021/10/14(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yuji Matsuura(Tohoku Univ.) |
| Vice Chair | |
| Secretary | (NTT) |
| Assistant | Yukihiro Goto(NTT) / Minoru Takahashi(Fujikura) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Consideration of Seismic Detection with Distributed Acoustic Sensor using Image Processing and Recognition |
| Sub Title (in English) | |
| Keyword(1) | Fiber Sensing |
| Keyword(2) | Distributed Acoustic Sensing |
| Keyword(3) | Seismic Observation |
| Keyword(4) | Hough transform |
| Keyword(5) | Convolutional Neural Network |
| 1st Author's Name | Takahiro Arioka |
| 1st Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 2nd Author's Name | Kentaro Nakamura |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| Date | 2021-10-14 |
| Paper # | OFT2021-42 |
| Volume (vol) | vol.121 |
| Number (no) | OFT-199 |
| Page | pp.pp.79-84(OFT), |
| #Pages | 6 |
| Date of Issue | 2021-10-07 (OFT) |