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- Keisuke Ariyoshi; Eiichiro Araki; Hiroyuki Matsumoto; Yuya Machida; Shuhei Tsuji; Shuichiro Yada; Takeshi Iinuma; Kan Aoike; Yasuyuki Nakamura; Gou Fujie; Takane Hori; Nobu Eguchi; Shuichi Kodaira
Optimization of Pore Pressure Observation in a New Borehole Off the KII Channel: Toward High-Precision Extraction of Crustal Deformation Components
2025 IEEE Underwater Technology (UT), 02 Mar. 2025
1, 4 - Shuhei Tsuji; Eiichiro Araki; Hiroyuki Matsumoto; Yuya Machida; Takashi Yokobiki
Relationship between surface ground motion and strain observed by a helically wound fiber-optic cable
EARTH PLANETS AND SPACE, 28 Feb. 2025
77, 1 - Shuhei Tsuji; Eiichiro Araki; Takashi Yokobiki; Shuhei Nishida; Yuya Machida; Mark Zumberge; Keisuke Takahashi
Precise tilt measurement by seafloor borehole tiltmeters at the Nankai Trough subduction zone
EARTH PLANETS AND SPACE, 20 Dec. 2023
75, 1 - Shuhei Nishida; Yuya Machida; Hiroyuki Matsumoto; Eiichiro Araki; Shojiro Ishibashi
Precise bathymetry with an underwater vehicle for seafloor crustal movement observation
2023 IEEE UNDERWATER TECHNOLOGY, UT, 2023 - Keisuke Ariyoshi; Takeshi Iinuma; Masaru Nakano; Toshinori Kimura; Eiichiro Araki; Yuya Machida; Kentaro Sueki; Shuichiro Yada; Takehiro Nishiyama; Kensuke Suzuki; Takane Hori; Narumi Takahashi; Shuichi Kodaira
Characteristics of Slow Slip Event in March 2020 Revealed From Borehole and DONET Observatories
FRONTIERS IN EARTH SCIENCE, 22 Jan. 2021
8 - Yuya Machida; Shuhei Nishida; Toshinori Kimura; Eiichiro Araki
Mobile Pressure Calibrator for the Development of Submarine Geodetic Monitoring Systems
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Sep. 2020
125, 9 - Akihiro Kono; Toshinori Sato; Masanao Shinohara; Kimihiro Mochizuki; Tomoaki Yamada; Kenji Uehira; Takashi Shinbo; Yuya Machida; Ryota Hino; Ryousuke Azuma
2D spatial distribution of reflection intensity on the upper surface of the Philippine Sea plate off the Boso Peninsula, Japan
TECTONOPHYSICS, 05 Jan. 2020
774 - Yuya Machida; Eiichiro Araki; Shuhei Nishida; Toshinori Kimura; Hiroyuki Matsumoto
On the Accuracy of Quartz Pressure Sensor in the Seafloor Affected by Transport Condition
IEEE JOURNAL OF OCEANIC ENGINEERING, Oct. 2019
44, 4, 1049, 1057 - Shuhei Nishida; Toshinori Kimura; Yuya Machida; Eiichiro Araki
Level adjust unit at seafloor for precise pressure measurement
2019 IEEE UNDERWATER TECHNOLOGY (UT), 2019 - Yuya Machida; Shuhei Nishida; Toshinori Kimura; Eiichiro Araki; Katsuyoshi Kawaguchi
A development of a mobile pressure calibrator for seafloor geodetic measurements
2019 IEEE UNDERWATER TECHNOLOGY (UT), 2019 - Toshinori Kimura; Eiichiro Araki; Yuya Machida; Katsuyoshi Kawaguchi
Seismic velocity monitoring using cabled seafloor and borehole seismic observatories in the Nankai Trough, Japan
2019 IEEE UNDERWATER TECHNOLOGY (UT), 2019 - Hiroyuki Matsumoto; Toshinori Kimura; Shuhei Nishida; Yuya Machida; Eiichiro Araki
Experimental evidence characterizing pressure fluctuations at the seafloor-water interface induced by an earthquake
SCIENTIFIC REPORTS, 06 Nov. 2018
8, 1, 16406, 16406 - Yuya Machida; Eiichiro Araki; Toshinori Kimura; Demian M. Saffer; Tomokazu Saruhashi; Takahiro Yokoyama; Noriaki Sakurai
Installation of a High Sensitivity Ocean Borehole Strainmeter in the Nankai Trough Under Severe Sea Current Conditions
MARINE TECHNOLOGY SOCIETY JOURNAL, May 2018
52, 3, 128, 137 - C. Kinoshita; D. Saffer; A. Kopf; A. Roesner; L. M. Wallace; E. Araki; T. Kimura; Y. Machida; R. Kobayashi; E. Davis; S. Toczko; S. Carr
Changes in Physical Properties of the Nankai Trough Megasplay Fault Induced by Earthquakes, Detected by Continuous Pressure Monitoring
Journal of Geophysical Research: Solid Earth, Feb. 2018
123, 2, 1072, 1088 - Eiichiro Araki; Demian Saffer; Toshinori Kimura; Yuya Machida; Katsuyoshi Kawaguchi
Seafloor borehole observatory array for monitoring slow slip events in the Nankai Trough seismogenic zone.
2018 OCEANS - MTS/IEEE KOBE TECHNO-OCEANS (OTO), 2018 - Keisuke Ariyosi; Shuhei Nishida; Yuya Machida; Takeshi Iinuma; Kan Aoike; Hiroshi Uchida; Akira Nagano; Takuya Hasegawa; Mikiko Fujita; Toru Miyama; Yasumasa Miyazawa; Akira Kuwano-Yoshida; Masahide Wakita; Akiko To; Tatsu Kuwatani; Kaoru Ichikawa
A total station plan combined with "D/V Chikyu" and DONET: simultaneous observation from seafloor to atmosphere
2018 OCEANS - MTS/IEEE KOBE TECHNO-OCEANS (OTO), 2018 - Shuehi Nishida; Yuya Machida; Eiichiro Araki; Katsuyoshi Kawaguchi
Level Adjustor of Mobile Pressure Calibrator for Ocean Bottom Pressure Gauge
2018 OCEANS - MTS/IEEE KOBE TECHNO-OCEANS (OTO), 2018 - Toshinori Kimura; Eiichiro Araki; Yuya Machida; Katsuyoshi Kawaguchi
Temporal changes in seismic velocity detected by ambient noise records observed by seafloor seismic network in the Nankai Trough, Japan
2018 OCEANS - MTS/IEEE KOBE TECHNO-OCEANS (OTO), 2018 - Akihiro Kono; Toshinori Sato; Masanao Shinohara; Kimihiro Mochizuki; Tomoaki Yamada; Kenji Uehira; Takashi Shinbo; Yuya Machida; Ryota Hino; Ryousuke Azuma
Geometry and spatial variations of seismic reflection intensity of the upper surface of the Philippine Sea plate off the Boso Peninsula, Japan
TECTONOPHYSICS, 10 Jul. 2017
709, 44, 54 - Eiichiro Araki; Demian M. Saffer; Achim J. Kopf; Laura M. Wallace; Toshinori Kimura; Yuya Machida; Satoshi Ide; Earl Davis
Recurring and triggered slow-slip events near the trench at the Nankai Trough subduction megathrust
SCIENCE, 16 Jun. 2017
356, 6343, 1157, 1160 - Eiichiro Araki; Toshinori Kimura; Yuya Machida; Takashi Yokobiki; Shuhei Nishida; Katsuyoshi Kawaguchi; Masanori Kyo; Tomo Saruhashi; Sean Toczko; Demian Saffer; Achim Kopf
Deep seafloor borehole observatories for seismogenic zone monitoring
Techno-Ocean 2016: Return to the Oceans, 30 Mar. 2017
656, 659 - L. M. Wallace; E. Araki; D. Saffer; X. Wang; A. Roesner; A. Kopf; A. Nakanishi; W. Power; R. Kobayashi; C. Kinoshita; S. Toczko; T. Kimura; Y. Machida; S. Carr
Near-field observations of an offshore Mw 6.0 earthquake from an integrated seafloor and subseafloor monitoring network at the Nankai Trough, southwest Japan
Journal of Geophysical Research: Solid Earth, 01 Nov. 2016
121, 11, 8338, 8351 - Yuya Machida; Shuhei Nishida; Eiichiro Araki; Hiroyuki Matsumoto; Toshinori Kimura; Katsuyoshi Kawaguchi
Assessments of a quartz pressure sensor characteristics for accurate pressure measurements to detect small seafloor displacements
TECHNO-OCEAN 2016: RETURN TO THE OCEANS, 2016
652, 655 - Yoshio Murai; Ryosuke Azuma; Masanao Shmohara; Yuya Machida; Tomoaki Yamada; Kazuo Nakahigashi; Takashi Shinbo; Kimihiro Mochizuki; Ryota Hino; Yoshihiro Ito; Toshinori Sato; Hajime Shiobara; Kenji Uehira; Hiroshi Yakiwara; Koichiro Obana; Narumi Takahashi; Shuichi Kodaira; Kenji Hirata; Hiroaki Tsushima; Takaya Iwasaki
Aftershock distribution of the 2011 off the Pacific coast of Tohoku earthquake and stress regime changes revealed by ocean bottom seismographic observation
Journal of the Hokkaido University, Faculty of Science, Series VII: Geophysics, 2013
76, 147, 158 - Masanao Shinohara; Yuya Machida; Tomoaki Yamada; Kazuo Nakahigashi; Takashi Shinbo; Kimihiro Mochizuki; Yoshio Murai; Ryota Hino; Yoshihiro Ito; Toshinori Sato; Hajime Shiobara; Kenji Uehira; Hiroshi Yakiwara; Koichiro Obana; Narumi Takahashi; Shuichi Kodaira; Kenji Hirata; Hiroaki Tsushima; Takaya Iwasaki
Precise aftershock distribution of the 2011 off the Pacific coast of Tohoku Earthquake revealed by an ocean-bottom seismometer network
EARTH PLANETS AND SPACE, 2012
64, 12, 1137, 1148
[] - Shinohara, Masanao; Yamada, Tomoaki; Nakahigashi, Kazuo; Sakai, Shin'ichi; Mochizuki, Kimihiro; Uehira, Kenji; Ito, Yoshihiro; Azuma, Ryusuke; Kaiho, Yuka; No, Tetsuo; Shiobara, Hajime; Hino, Ryota; Murai, Yoshio; Yakiwara, Hiroshi; Sato, Toshinori; Machida, Yuya; Shinbo, Takashi; Isse, Takehi; Miyamachi, Hiroki; Obana, Koichiro; Takahashi, Narumi; Kodaira, Shuichi; Kaneda, Yoshiyuki; Hirata, Kenji; Yoshikawa, Sumio; Obara, Kazushige; Iwasaki, Takaya; Hirata, Naoshi
Aftershock observation of the 2011 off the Pacific coast of Tohoku Earthquake by using ocean bottom seismometer network
Earth Planets and Space, 2011
63, 7, 835, 840
[] - Machida, Yuya; Shinohara, Masanao; Takanami, Tetsuo; Murai, Yoshio; Yamada, Tomoaki; Hirata, Naoshi; Suyehiro, Kiyoshi; Kanazawa, Toshihiko; Kaneda, Yoshiyuki; Mikada, Hitoshi; Sakai, Shin'ichi; Watanabe, Tomoki; Uehira, Kenji; Takahashi, Narumi; Nishino, Minoru; Mochizuki, Kimihiro; Sato, Takeshi; Araki, Ei'ichiro; Hino, Ryota; Uhira, Kouichi; Shiobara, Hajime; Shimizu, Hiroshi
Heterogeneous structure around the rupture area of the 2003 Tokachi-oki earthquake (Mw=8.0), Japan, as revealed by aftershock observations using Ocean Bottom Seismometers
Tectonophysics, Feb. 2009
465, 1-4, 164, 176
[] - Shinohara, Masanao; Kanazawa, Toshihiko; Yamada, Tomoaki; Nakahigashi, Kazuo; Sakai, Shin'ichi; Hino, Ryota; Murai, Yoshio; Yamazaki, Akira; Obana, Koichiro; Ito, Yoshihiro; Iwakiri, Kazuhiro; Miura, Ryo; Machida, Yuya; Mochizuki, Kimihiro; Uehira, Kenji; Tahara, Michitaka; Kuwano, Asako; Amamiya, Shin'ichiro; Kodaira, Shuichi; Takanami, Tetsuo; Kaneda, Yoshiyuki; Iwasaki, Takaya
Precise aftershock distribution of the 2007 Chuetsu-oki Earthquake obtained by using an ocean bottom seismometer network
Earth Planets and Space, 2008
60, 11, 1121, 1126
[]
Misc.
- Yuya Machida; Shuhei Nishida; Hiroyuki Matsumoto; Eiichiro Araki
Long-term seafloor displacements in the Nankai trough seismogenic zones to understand local characteristics of the plate coupling states
SZ4D workshop, Jan. 2025 - Yuya Machida; Eiichiro Araki; Takashi Yokobiki; Shuhei Tsuji; Satoru Baba; Hiroyuki Matsumoto; Shuhei Nishida; Tomokazu Saruhashi; Yasuyuki Nakamura; Kan Aoike; Gou Fujie; Keisuke Ariyoshi; Takane Hori; Shuichi Kodaira
Installation of the new LTBMS system in the Nankai Trough, and evaluation of cement curing process on long-term strain data and SSEs detection.
JpGU2024, May 2024 - Yuya Machida; Masanao Shinohara; Tomoaki Yamada; Kazuo Nakahigashi; Toshihiko Kanazawa
Seismic activity off Joetsu, Niigata Prefecture, Japan, from Dec. 2008 to Oct. 2009 using long-term ocean bottom seismometers (OBSs)
Jpgu 2024, May 2024 - 西田周平; 荒木英一郎; 横引貴史; 松本浩幸; 町田祐弥; 辻修平; 馬場慧
連続リアルタイム海底地殻変動観測技術の開発・展開
海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2024
2023 - 荒木英一郎; 町田祐弥; 横引貴史; 辻修平; 松本弘幸; 西田周平; 馬場慧; 青池寛; 中村恭之; 有吉慶介; 堀高峰; 小平秀一
南海トラフで繰り返すゆっくり滑りのリアルタイム検知に向けた長期孔内観測の取り組み
海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2024
2023 - 有吉慶介; 飯沼卓史; 山本揚二朗; 宮澤泰正; VARLAMOV Sergey; 松本浩幸; 町田祐弥; SAFFER Demian; 荒木英一郎; 堀川博紀; 末木健太郎; 矢田修一郎; 高橋成実; 堀高峰; 小平秀一
Shallow Slow Slip Events (SSEs) detected by borehole and DONET observatories: comparison of SSEs between 2020 and 2023 March
日本地質学会学術大会(Web), 2023
130th - 松本浩幸; 町田祐弥; 辻修平; 横引貴史; 有吉慶介; 荒木英一郎
Analysis of long-term pore pressure data acquired at a 20 m borehole in the Kamioka Mine
日本地震学会秋季大会講演予稿集(CD-ROM), 2023
2023 - 荒木英一郎; 町田祐弥; 横引貴史; 辻修平; 松本浩幸; 西田周平; 馬場慧; 青池寛; 中村恭之; 有吉慶介; 堀高峰; 小平秀一
Development of seafloor deep borehole long-term observation system and the deployment plan in the Nankai Trough.
日本地震学会秋季大会講演予稿集(CD-ROM), 2023
2023 - 町田祐弥; 荒木英一郎; 横引貴史; 猿橋具和; 辻修平; 松本浩幸
Development of seafloor borehole fiber optical strainemter
日本地震学会秋季大会講演予稿集(CD-ROM), 2023
2023 - 辻修平; 荒木英一郎; 松本浩幸; 町田祐弥; 横引貴史
Initial test of borehole fiber optic strainmeter at Kamioka Mine
日本地震学会秋季大会講演予稿集(CD-ROM), 2023
2023 - 辻修平; 荒木英一郎; 横引貴史; 西田周平; 町田祐弥; ZUMBERGE Mark; 高橋恵輔
Detectability of tilt variations by tiltmeters in seafloor borehole at off the Kii Peninsula
日本地球惑星科学連合大会予稿集(Web), 2023
2023 - 荒木英一郎; 横引貴史; 馬場慧; 山本揚二朗; ZUMBERGE Mark; 辻修平; 西田周平; 町田祐弥; 松本浩幸
Construction of seafloor fiber optic strainmeter array for fault slip analysis of shallow slow slip event and very low frequency earthquakes in the Nankai Trough
日本地球惑星科学連合大会予稿集(Web), 2023
2023 - Ariyoshi Keisuke; Iinuma Takeshi; Yamamoto Yojiro; Miyazawa Yasumasa; Varlamov Sergey; Matsumoto Hiroyuki; Machida Yuya; Saffer Demian; Araki Eiichiro; Horikawa Hiroki; Sueki Kentaro; Yada Shuichiro; Takahashi Narumi; Hori Takane; Kodaira Shuichi
Shallow Slow Slip Events (SSEs) detected by borehole and DONET observatories: comparison of SSEs between 2020 and 2023 March
Annual Meeting of the Geological Society of Japan, 2023
2023, 424 - 辻修平; 荒木英一郎; 横引貴史; 西田周平; 町田祐弥; ZUMBERGE Mark; 高橋恵輔
Tilt measurement by highly sensitive tiltmeters installed into ocean bottom borehole at off Kii peninsula
日本測地学会講演会要旨, 2022
138th - 荒木英一郎; 横引貴史; 馬場慧; 山本揚二朗; ZUMBERGE Mark; 西田周平; 町田祐弥; 松本浩幸
Shallow slow slip and associated VLFE activity observed by seafloor fiber optic strainmeter in the Nankai Trough.
日本地震学会秋季大会講演予稿集(CD-ROM), 2022
2022 - 町田祐弥; 西田周平; 松本浩幸; 荒木英一郎
Seafloor geodetic observation using the pressure gauges without inherent drift components in the Nankai trough seismogenic zone
日本地震学会秋季大会講演予稿集(CD-ROM), 2022
2022 - 松本浩幸; 永野憲; 有吉慶介; 荒木英一郎; 町田祐弥; 西田周平; 木村俊則
EFFECT OF OCEAN CURRENT ON LONG-TERM IN-SITU PRESSURE OBSERVATION IN SAGAMI BAY
土木学会論文集 B2(海岸工学)(Web), 2021
77, 2 - 町田祐弥; 西田周平; 松本浩幸; 荒木英一郎
Seafloor crustal deformation off the east coast of Izu-Oshima volcano using the Long-Term Ocean Bottom Pressure Recorder
日本地震学会秋季大会講演予稿集(CD-ROM), 2021
2021 - 飯沼卓史; 荒木英一郎; 縣亮一郎; 山本揚二郎; 木村俊則; 町田祐弥; 有吉慶介; 市村強; 堀高峰; 小平秀一
Spatio-temporal evolution of the slow slip event in Kumano-nada occurred during December 2020 to January 2021
日本地震学会秋季大会講演予稿集(CD-ROM), 2021
2021 - MATSUMOTO Hiroyuki; NAGANO Akira; ARIYOSHI Keisuke; ARAKI Eiichiro; MACHIDA Yuya; NISHIDA Shuhei; KIMURA Toshinori
EFFECT OF OCEAN CURRENT ON LONG-TERM IN-SITU PRESSURE OBSERVATION IN SAGAMI BAY
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 2021
77, 2, I_901, I_906 - 町田祐弥; 西田周平; 木村俊則; 松本浩幸; 荒木英一郎
A development of submarine geodetic monitoring system by calibration of the DONET pressure gauge network
日本地震学会秋季大会講演予稿集(CD-ROM), 2020
2020 - 西田周平; 荒木英一郎; 横引貴史; 松本浩幸; 木村俊則; 町田祐弥; COOK Matthew James
リアルタイム海底地殻変動観測技術の開発とその展開
海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM), 2020
2020 - MATSUMOTO Hiroyuki; KIMURA Toshinori; ARAKI Eiichiro; NISHIDA Shuhei; MACHIDA Yuya
PRESSURE STANDARD EXPERIMENTS SUPPORTING THE INTERPRETATION OF BOTTOM PRESSURE RECORDER IN-SITU OBSERVATIONS
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 2019
75, 2, I_1339, I_1344 - NISHIDA Shuhei; MACHIDA Yuya; ARAKI Eiichiro; KAWAGUCHI Katsuyoshi
Level and Attitude Adjustor for In-Situ Calibration of Ocean Bottom Pressure Gauge
The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec), 2017
2017, 2P1-G10 - Machida Yuya; Shinbo Takashi; Shinohara Masanao; Yamada Tomoaki; Mochizuki Kimihiro; Kanazawa Toshihiko
A seismic refraction survey conducted for the Ocean Bottom Cabled Seismometer system installed in the Japan Sea
Journal of the Japan Society for Marine Surveys and Technology, 2014
26, 1, p01, p11 - Murai Yoshio; Azuma Ryosuke; Shinohara Masanao; Machida Yuya; Yamada Tomoaki; Nakahigashi Kazuo; Shinbo Takashi; Mochizuki Kimihiro; Hino Ryota; Ito Yoshihiro; Sato Toshinori; Shiobara Hajime; Uehira Kenji; Yakiwara Hiroshi; Obana Koichiro; Takahashi Narumi; Kodaira Shuichi; Hirata Kenji; Tsushima Hiroaki; Iwasaki Takaya
Aftershock distribution of the 2011 off the Pacific coast of Tohoku earthquake and stress regime changes revealed by ocean bottom seismographic observation
北海道大学地球物理学研究報告, 19 Mar. 2013
76, 147, 158 - Ichijo Kazuhiro; Murai Yoshio; Machida Yuya; Miura Ryo; Nishimura Yuichi; Takanami Tetsuo
Seismic activities deduced from ocean bottom seismographic observation off Cape Erimo, Hokkaido
北海道大学地球物理学研究報告, 15 Mar. 2009
72, 23, 35 - TAKANAMI Tetsuo; MURAI Yoshio; MACHIDA Yuya; SAITO Ichisuke; MAKINO Yumi; KATSUMATA Kei; YAMAGUCHI Teruhiro; NISHINO Minoru
A Remarkable Phenomena Just before the 2003 Tokachi-oki Earthquake Observed by Ocean Bottom Seismographs
Zisin (Journal of the Seismological Society of Japan. 2nd ser.), 2005
57, 3, 291, 303 - 高波 鐵夫; 村井 芳夫; 町田 祐弥
海底地震観測が捉えた2003年十勝沖地震直前の微小なクラスター地震など—総特集 2003年十勝沖地震 ; 3章 地震観測・構造探査
号外地球 = Chikyu monthly/special : カラー版 / 月刊地球編集部 編, 2005
49, 80, 91
