研究者詳細 - 田所　敬一

論文 - 田所　敬一

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GNSSブイを用いた地球科学・災害監視のための総合海洋アレイ招待有り

加藤照之・寺田幸博・田所敬一・二村　彰

月刊地球 44 巻 ( 1 ) 頁： 44 - 51 2022年1月

Developments of GNSS buoy for a synthetic geohazard monitoring system

Kato Teruyuki, Terada Yukihiro, Tadokoro Keiichi, Futamura Akira

PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES 98 巻 ( 2 ) 頁： 49 - 71 2022年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of the Japan Academy Series B: Physical and Biological Sciences

A global navigation satellite system (GNSS) buoy system for early tsunami warnings has been developed for more than 20 years. The first GNSS buoy system using a real-time kinematic algorithm (RTK) was implemented in the Nationwide Ocean Wave information network for Ports and HArbourS (NOWPHAS) wave monitoring system in Japan in 2008. The records of NOWPHAS were used to update the tsunami alert by the Japan Meteorological Agency (JMA), owing to the tsunami generated by the 2011 Tohoku-oki earthquake (Mw9.0). However, considering that the distance limit is less than 20km for the RTK algorithm, a new system was designed by introducing a new positioning algorithm and satellite data transmission to place the buoy much farther from the coast. A new technique for the continuous monitoring of ocean-bottom crustal movements was also implemented in the new system. The new buoy system can be used for weather forecasting and ionospheric monitoring as well

DOI： 10.2183/pjab.98.004

Estimation of temporal and spatial variation of sound speed in ocean from GNSS-A measurements for observation using moored buoy 査読有り

Prog. Earth Planet Sci. 7 巻頁： 21 2020年6月

A Marine-Buoy-Mounted System for Continuous and Real-Time Measurment of Seafloor Crustal Deformation 査読有り

Tadokoro, K., N. Kinugasa, T. Kato, Y. Terada, and K. Matsuhiro

Front. Earth Sci. 8 巻頁： 123 2020年4月

リアルタイム・連続海域観測招待有り

田所敬一

日本地震学会モノグラフ 6 巻頁： 12-15 2020年3月

Interplate Coupling Distribution Along the Nankai Trough in Southwest Japan Estimated From the Block Motion Model Based on Onshore GNSS and Seafloor GNSS/A Observations

Kimura Hiroshi, Tadokoro Keiichi, Ito Takeo

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 124 巻 ( 6 ) 頁： 6140 - 6164 2019年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Geophysical Research: Solid Earth

Along the Nankai Trough of southwest Japan, large-magnitude interplate earthquakes (M > 8) have occurred repeatedly, with recurrence intervals of approximately 100 years. It is essential to estimate more precisely the spatial distribution of interplate coupling; that is, along-strike and along-dip heterogeneity of the coupling ratio defined as the slip deficit rate divided by the plate convergence rate, for understanding the mechanisms and/or assessing the potential of future mega interplate earthquakes in this region. Recently, the seafloor Global Navigation Satellite System-Acoustic (GNSS/A) combination technique observation network has been extended, and we can now obtain crustal displacement fields for both onshore and offshore regions. In this study, we estimate interplate coupling distribution along the Nankai Trough using both seafloor GNSS/A and onshore GNSS data with the block motion model, minimizing the spatial variations of modeling uncertainties of coupling estimates. Seafloor GNSS/A data depict very strong coupling near the trough axis off of Tokai, as well as trough-parallel heterogeneity in interplate coupling at the shallow plate interface. Using the block motion model confirmed that observed crustal deformation above the deep plate interface in SW Japan is dominated by rigid block motion rather than elastic response to slip deficit on the deep plate interface of the subducting Philippine Sea plate. The minimization of spatial variations for the modeling uncertainties of coupling estimates helps us to estimate the coupling distribution with nearly homogeneous uncertainties between offshore and onshore regions, which is useful for evaluation of interplate earthquakes and/or tsunamis hazards.

DOI： 10.1029/2018JB016159

Web of Science

Scopus

Interplate Coupling State at the Nansei-Shoto (Ryukyu) Trench, Japan, Deduced From Seafloor Crustal Deformation Measurements

Tadokoro K., Nakamura M., Ando M., Kimura H., Watanabe T., Matsuhiro K.

Geophysical Research Letters 45 巻 ( 14 ) 頁： 6869 - 6877 2018年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Geophysical Research Letters

We performed observations of seafloor crustal deformation employing the Global Navigation Satellite System/Acoustic technique at two stations installed at about 45 and 70 km from the axis of the Nansei-Shoto (Ryukyu) Trench, to the southeast off the Okinawa Main Island. The observations for 3- and 6-year survey periods indicate that the two stations moved landward, in the opposite direction to the trench, by 63 and 21 mm/year relative to the Ryukyu Arc, suggesting interplate coupling around the stations. The observational results reveal the strong coupling state on the plate interface with coupling ratios of 0.9–1.0 at the slab depths of 10–13 km or 0.7–0.8 at slab depth ranging from 13 km up to the seafloor. The strongly coupled segment completely coincides with the source area of the 1791 tsunami event and does not overlap with the activity area of slow slip events.

DOI： 10.1029/2018GL078655

Web of Science

Scopus

Development of GNSS Buoy for a Synthetic Geohazard Monitoring System

Kato Teruyuki, Terada Yukihiro, Tadokoro Keiichi, Kinugasa Natsuki, Futamura Akira, Toyoshima Morio, Yamamoto Shin-ichi, Ishii Mamoru, Tsugawa Takuya, Nishioka Michi, Takizawa Kenichi, Shoji Yoshinori, Seko Hiromu

JOURNAL OF DISASTER RESEARCH 13 巻 ( 3 ) 頁： 460-471 2018年6月

Tsunami Scenarios Based on Interseismic Models Along the Nankai Trough, Japan, From Seafloor and Onshore Geodesy

Watanabe Shun-ichi, Bock Yehuda, Melgar Diego, Tadokoro Keiichi

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 123 巻 ( 3 ) 頁： 2448-2461 2018年3月

陸上及び海底地殻変動観測データに基づくブロック運動モデルを用いた南海トラフ沈み込み帯の固着推定

名古屋大学大学院環境学研究科（木村　洋・田所敬一・伊藤武男）

地震予知連絡会報 99 巻頁： 298-301 2018年3月

Strain partitioning and interplate coupling along the northern margin of the Philippine Sea plate, estimated from Global Navigation Satellite System and Global Positioning System-Acoustic data 査読有り

Nishimura, T., Yokota, Y., Tadokoro, K., and Ochi, T.

14 巻頁： 1-17 2018年

GNSS Buoy Array in the Ocean for a Synthetic Geohazards Monitoring System 査読有り

Kato, T., Y. Terada, K. Tadokoro, A. Futamura, M. Toyoshima, S. Yamamoto, M. Ishii, T. Tsugawa, M. Nishioka, K. Takizawa, Y. Shoji, T. Iwasaki, and N. Koshikawa

頁： 00 2017年

Interplate locking condition derived from seafloor geodetic observation in the shallowest subduction segment at the Central Nankai Trough, Japan

Yasuda Kenji, Tadokoro Keiichi, Taniguchi Sota, Kimura Hiroshi, Matsuhiro Kenjiro

GEOPHYSICAL RESEARCH LETTERS 44 巻 ( 8 ) 頁： 3572-3579 2017年4月

御嶽山に関する住民意識調査から考察する災害情報の伝達査読有り

阪本真由美・田所敬一・高木朗充・臼田裕一郎・宇井忠英

地域安全学会論文集頁： 0 2016年

南海トラフ沿いでの海底地殻変動解析結果（暫定）

名古屋大学大学院環境学研究科地震火山研究センター（田所敬一）

地震予知連絡会報 96 巻頁： 325-327 2016年

南西諸島海溝における海底地殻変動解析結果（暫定）

名古屋大学大学院環境学研究科地震火山研究センター（田所敬一）・琉球大学理学部

地震予知連絡会報 96 巻頁： 417-420 2016年

Estimation of Resistivity Structure of Sanageyama-Kita Fault Zone based on Electrical Prospecting

Ejiri Tomoka, Ichihara Hiroshi, Tadokoro Keiichi, Ohta Yusuke, Kuroda Manaka, Shirayama Tomoyuki, Watanabe Toshiki

Proceedings of the Conductivity Anomaly Workshop 2024 巻 ( 0 ) 頁： 63 - 63 2024年

Editorial: Frontiers in Seafloor Geodesy 招待有り国際共著

FRONTIERS IN EARTH SCIENCE 9 巻 2021年8月

Recent Developments of GPS Tsunami Meter for a Far Offshore Observations 査読有り

Proceedings to International Association of Geodesy Symposia 頁： 00 2015年

南海トラフ周辺での海底地殻変動観測

田所敬一

平成26年度愛知県震度観測・調査報告書 35 巻頁： 00 2015年

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