JAMSTEC Researchers Database

  • Aki Ito
Department
Research Institute for Marine Geodynamics (IMG)　Volcanoes and Earth’s Interior Research Center (VERC)　Geophysical Research Group
Career
Resercher

Profile

Speciality

Research Achievement

Peer reviewed publications (Belonging to JAMSTEC)

  • Aki Ito, Hajime Shiobara, Matthew Miller, Hiroko Sugioka, Javier Ojeda, Carlos Tassara, Masanao Shinohara, Masataka Kinoshita, Hikaru Iwamori. Long-term Array Observation by Ocean Bottom Seismometers at the Chile Triple Junction. JOURNAL OF SOUTH AMERICAN EARTH SCIENCES, 2023, 124, doi: 10.1016/j.jsames.2023.104285
  • Haruka Nagai, Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada. Inference of velocity structures of oceanic crust and upper mantle from surface waveform fitting. GEOPHYSICAL JOURNAL INTERNATIONAL, 2023, 233, 3, p. 1974-1986, doi: 10.1093/gji/ggad049
  • Daisuke Suetsugu, Masayuki Obayashi, Takashi Tonegawa, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Junko Yoshimitsu. Nature of mantle discontinuities beneath the Ontong Java Plateau. PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2022, doi: 10.1016/j.pepi.2022.106969
  • Yasunori Sawaki, Yusuke Yamashita, Shukei Ohyanagi, Emmanuel Soliman M Garcia, Aki Ito, Hiroko Sugioka, Tsutomu Takahashi, Masanao Shinohara, Yoshihiro Ito. Seafloor depth controls seismograph orientation uncertainty. GEOPHYSICAL JOURNAL INTERNATIONAL, 2022, 232, 2, p. 1376-1392, doi: 10.1093/gji/ggac397
  • Tatsuya Kubota, Tatsuhiko Saito, Yoshio Fukao, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Hajime Shiobara, Mikiya Yamashita. Earthquake Rupture and Tsunami Generation of the 2015 Mw 5.9 Bonin Event Revealed by In Situ Pressure Gauge Array Observations and Integrated Seismic and Tsunami Wave Simulation. GEOPHYSICAL RESEARCH LETTERS, 2021, 48, 22, doi: 10.1029/2021GL095915
  • Masayuki Obayashi, Junko Yoshimitsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Takashi Tonegawa. Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography. Scientific Reports, 2021, doi: 10.1038/s41598-021-99833-5
  • Yoshio Fukao, Tatsuya Kubota, Hiroko Sugioka, Aki Ito, Takashi Tonegawa, Hajime Shiobara, Mikiya Yamashita, Tatsuhiko Saito. Detection of “Rapid” Aseismic Slip at the Izu-Bonin Trench. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2021, 126, 9, doi: 10.1029/2021JB022132
  • Takehi Isse, Daisuke Suetsugu, Akira Ishikawa, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yuki Kawano, Kazunori Yoshizawa, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa & Junko Yoshimitsu. Seismic evidence for a thermochemical mantle plume underplating the lithosphere of the Ontong Java Plateau. Communications Earth & Environment, 2021, 2, 98, doi: 10.1038/s43247-021-00169-9
  • Hajime Shiobara, Aki Ito, Hiroko Sugioka, Masanao Shinohara, Toshinori Sato. Tilt observations at the seafloor by mobile ocean bottom seismometers. Frontiers in Earth Science, 2021, doi: 10.3389/feart.2020.599810
  • Yuki Kawano, Takehi Isse, Akiko Takeo, Hitoshi Kawakatsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu. Persistent Long-Period Signals Recorded by an OBS Array in the Western-Central Pacific: Activity of Ambrym Volcano in Vanuatu. GEOPHYSICAL RESEARCH LETTERS, 2020, 47, 19, doi: 10.1029/2020GL089108
  • Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hitoshi Utada,. Inversion of longer-period OBS waveforms for P structures in the oceanic lithosphere and asthenosphere. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2020, 125, 7, doi: 10.1029.2019JB018810
  • Aki Ito, Takashi Tonegawa, Naoki Uchida, Yojiro Yamamoto, Daisuke Suetsugu, Ryota Hino, Hiroko Sugioka, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara. Configuration and structure of the Philippine Sea Plate off Boso, Japan: constraints on the shallow subduction kinematics, seismicity, and slow slip events. EARTH PLANETS AND SPACE, 2019, 71, 111, doi: 10.1186/s40623-019-1090-y
  • D. Suetsugu, H. Shiobara, H. Sugioka, A. Ito, T. Isse, Y. Ishihara, S. Tanaka, M. Obayashi, T. Tonegawa, J. Yoshimitsu, T. Kobayashi. High QScS beneath the Ontong Java Plateau. EARTH PLANETS AND SPACE, 2019, 71, doi: 10.1186/s40623-019-1077-8
  • Yoshio Fukao, Toru Miyama, Yoko Tono, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Mikiya Yamashita, Sergey Varlamov, Ryo Furue, Yasumasa Miyazawa. Detection of Ocean Internal Tide Source Oscillations on the Slope of Aogashima Island, Japan. JOURNAL OF GEOPHYSICAL RESEARCH - Oceans, 2019, 124, 7, p. 4918-4933, doi: 10.1029/2019JC014997
  • T. Tonegawa, S. Miura, A. Ishikawa, T. Sano, D. Suetsugu, T. Isse, H. Shiobara, H. Sugioka, A. Ito, Y. Ishihara, S. Tanaka, M. Obayashi, J. Yoshimitsu, T. Kobayashi. Characterization of Crustal and Uppermost‐Mantle Seismic Discontinuities in the Ontong Java Plateau. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2019, 124, 7, p. 7155-7170, doi: 10.1029/2018JB016970
  • Takehi Isse, Hitoshi Kawakatsu, Kazunori Yoshizawa, AkikoTakeo, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Daisuke Suetsugu, DominiqueReymond. Surface wave tomography for the Pacific Ocean incorporating seafloor seismic observations and plate thermal evolution. EARTH AND PLANETARY SCIENCE LETTERS, 2019, 510, p. 116-130, doi: 10.1016/j.epsl.2018.12.033
  • Takehi Isse, Hitoshi Kawakatsu, Kazunori Yoshizawa, AkikoTakeo, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Daisuke Suetsugu, DominiqueReymond. Surface wave tomography for the Pacific Ocean incorporating seafloor seismic observations and plate thermal evolution. EARTH AND PLANETARY SCIENCE LETTERS, 2019, 510, p. 116-130, doi: 10.1016/j.epsl.2018.12.033
  • Akiko Takeo, Hitoshi Kawakatsu, Takehi Isse, Kiwamu Nishida, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Hisashi Utada. In Situ Characterization of the Lithosphere-Asthenosphere System beneath NW Pacific Ocean Via Broadband Dispersion Survey With Two OBS Arrays. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, 2018, 19, 9, p. 3529-3539, doi: 10.1029/2018GC007588
  • Akiko Takeo, Hitoshi Kawakatsu, Takehi Isse, Kiwamu Nishida, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Hisashi Utada. In Situ Characterization of the Lithosphere-Asthenosphere System beneath NW Pacific Ocean Via Broadband Dispersion Survey With Two OBS Arrays. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, 2018, doi: 10.1029/2018GC007588
  • Yoshio Fukao, Osamu Sandanbata, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Shingo Watada, Kenji Satake. Mechanism of the 2015 volcanic tsunami earthquake near Torishima, Japan. Science Advances, 2018, 4, 4, doi: 10.1126/sciadv.aao0219
  • Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Noriko Tada, Aki Ito, Takehi Isse, Kiyoshi Baba, Hiroshi Ichihara, Toyonobu Ota, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi, Hisashi Utada. The OJP array: seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau. JAMSTEC Report of Research and Development, 2018, 26, p. 54-64, doi: 10.5918/jamstecr.26.54
  • Nozomu Takeuchi, Hitoshi Kawakatsu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Hisashi Utada. Determination of intrinsic attenuation in the oceanic lithosphere-asthenosphere system. SCIENCE, 2017, 358, 6370, p. 1593-1596, doi: 10.1126/science.aao3508
  • Takashi Tonegawa, Yoshio Fukao, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Mikiya Yamashita. Excitation location and seasonal variation of transoceanic infragravity waves observed at an absolute pressure gauge array. JOURNAL OF GEOPHYSICAL RESEARCH - Oceans, 2017, 123, 1, p. 40-52, doi: 10.1002/2017JC013488
  • OSAMU SANDANBATA, SHINGO WATADA, KENJI SATAKE, YOSHIO FUKAO, HIROKO SUGIOKA, AKI ITO, HAJIME SHIOBARA. Ray Tracing for Dispersive Tsunamis and Source Amplitude Estimation Based on Green's Law: Application to the 2015 Volcanic Tsunami Earthquake Near Torishima, South of Japan. PURE AND APPLIED GEOPHYSICS, 2017, 175, 4, p. 1371-1385, doi: 10.1007/s00024-017-1746-0
  • Aki Ito, Yojiro Yamamoto, Ryota Hino, Daisuke Suetsugu, Hiroko Sugioka, Masaru Nakano, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara. Tomographic image of crust and upper mantle off the Boso Peninsula using data from an ocean bottom seismograph array. EARTH PLANETS AND SPACE, 2017, 69, 118, doi: 10.1186/s40623-017-0703-6
  • Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano, Yojiro Yamamoto. Upper boundaries of the Pacific and Philippine Sea plates near the triple junction off the Boso Peninsula deduced from ocean-bottom seismic observations. Earth, Planets Space, 2017
  • Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano & Yojiro Yamamoto. Upper boundaries of the Pacific and Philippine Sea plates near the triple junction off the Boso Peninsula deduced from ocean-bottom seismic observations. EARTH PLANETS AND SPACE, 2017, 69, 1, doi: 10.1186/s40623-017-0608-4
  • Tetsuo Matsuno, Daisuke Suetsugu, Kiyoshi Baba, Noriko Tada, Hisayoshi Shimizu, Hajime Shiobara, Takehi Isse, Hiroko Sugioka, Aki Ito, Masayuki Obayashi, Hisashi Utada. Mantle transition zone beneath a normal seafloor in the northwestern Pacific: Electrical conductivity, seismic thickness, and water content. Earth and Planetary Science Letters, 2017, 462, p. 189-198
  • M. Obayashi, J. Yoshimitsu, H. Sugioka, A. Ito, T. Isse, H. Shiobara, D. Reymond, and D. Suetsugu. Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data. Geophysical Research Letters, 2016, 43, doi: doi:10.1002/2016GL070793
  • Yoshio Fukao, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Jerome M. Paros, Ryo Furue. Sensing of upslope passages of frontal bores across the trench slope break of the Japan Trench. JOURNAL OF GEOPHYSICAL RESEARCH, 2016, 121, 5, p. 3422-3434, doi: 10.1002/2015JC011432
  • Takeo, A., H. Kawakatsu, T. Isse, K. Nishida, H. Sugioka, A. Ito, H. Shiobara, D. Suetsugu. Seismic azimuthal anisotropy in the oceanic lithosphere and asthenosphere from broadband surface wave analysis of OBS array records at 60 Ma seafloor. JOURNAL OF GEOPHYSICAL RESEARCH - Solid Earth, 2016, 121, 3, p. 1927-1947, doi: 10.1002/2015JB012429
  • Takehi Isse, Hiroko Sugioka, Aki Ito, Hajime Shiobara, Dominique Reymond and Daisuke Suetsugu. Upper mantle structure beneath the Society hotspot and surrounding region using broadband data from ocean floor and islands. Earth, Planets and Space, 2016, 68, doi: doi:10.1186/s40623-016-0408-2
  • Obana K., S. Kodaira, M. Shinohara, R. Hino, K. Uehira, H. Shiobara, K. Nakahigashi, T. Yamada, H. Sugioka, A. Ito, Y. Nakamura, S. Miura, Tetsuo No, N. Takahashi,. Aftershocks near the updip end of the 2011 Tohoku-Oki earthquake. Earth and Planetary Science Letters, 2013, 382, p. 111-116, doi: 10.1016/j.epsl.2013.09.007
  • Azusa Shito, Daisuke Suetsugu, Takashi Furumura, Hiroko Sugioka, Aki Ito. Small-scale heterogeneities in the oceanic lithosphere inferred from guided waves. Geophysical Research Letters, 2013, 40, 9, p. 1708-1712, doi: 10.1002/grl.50330
  • Takashi Tonegawa, Yoshio Fukao, Kiwamu Nishida, Hiroko Sugioka, Aki Ito. A temporal change of shear wave anisotropy within the marine sedimentary layer associated with the 2011 Tohoku-Oki earthquake. Journal of Geophysical Research, 2013, 118, p. 607-615, doi: DOI:10.1002/jgrb.50074
  • Aki Ito, Hiroko Sugioka,　Daisuke Suetsugu, Hajime Shiobara, Toshihiko Kanazawa, Yoshio Fukao. Detection of small earthquakes along the Pacific-Antarctic Ridge from T-waves recorded by abyssal ocean-bottom observatories. Marine Geophysical Research, 2012, doi: 10.1007/s11001-012-9158-0
  • Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Takafumi Kasaya, Noriko Tada, Kiyoshi Baba, Natsue ABE, Yozo Hamano, Pascal Tarits, Jean-Pierre Barriot, Dominique Reymond. TIARES Project -Tomographic investigation by seafloor array experiment for the Society hotspot. Earth Planets Space, 2012, 64, 4, p. 1-4, doi: doi:10.5047/eps.2011.11.002
  • Hiroko Sugioka, Taro Okamoto , Takeshi Nakamura , Yasushi Ishihara , Aki Ito , Koichiro Obana , Masa Kinoshita , Kazuo Nakahigashi , Masanao Shinohara, Yoshio Fukao. Tsunamigenic potential of the shallow subduction plate boundary inferred from slow seismic slip. Nature Geoscience, 2012, 5, 6, p. 414-418, doi: 10.1038/ngeo1466
  • Daisuke Suetsugu,Toru Inoue,Masayuki Obayashi,Akira Yamada,Hajime Shiobara,Hiroko Sugioka,Aki Ito,Toshihiko Kanazawa,Hitoshi Kawakatsu,Azusa Shito,Yoshio Fukao. Depths of the 410-km and 660-km discontinuities in and around the stagnant slab beneath the Philippine Sea: Is water stored in the stagnant slab?. Phys. Earth Planet. Inter., 2010, 183, 1-2, p. 270-279
  • Aki Ito, Hiroko Sugioka, Eiichiro Araki. An installation experiment with broadband ocean bottom seismometers for reducing low frequency seismic noises. JAMSTEC Report R&D, 2009, special Issue, p. 131-140
  • Azusa Shito, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Yasuko Takei, Hitoshi Kawakatsu, Toshihiko Kanazawa. Physical properties of subducted slab and surrounding mantle in the Izu-Bonin subduction zone based on BBOBS data. J. Geophys. Res., 2009, 114, p. B03308
  • Takehi Isse, Hajime Shiobara, Yoshihiko Tamura, Daisuke Suetsugu, Kazunori Yoshizawa, Hiroko Sugioka, Aki Ito, Toshihiko Kanazawa, Masanao Shinohara, Kimihiro Mochizuki, Eichiro Araki, Kazuo Nakahigashi, Hitoshi Kawakatsu, Azusa Shito, Yoshio Fukao, Osamu Ishizuka, James B. Gill. Seismic structure of the upper mantle beneath the Philippine Sea from seafloor and land observation: implications for mantle convection and magma genesis in the Izu-Bonin-Mariana subduction zone. Earth Planet. Sci. Lett., 2009, 278, '1-2, p. 107-119
  • Ayako Nakanishi, Shuichi Kodaira, Seiichi Miura, Aki Ito, Takeshi Sato, Jin-Oh Park, Yukari Kido, Yoshiyuki Kaneda. Detailed structural image around splay fault branching in the Nankai subduction seismogenic zone:Results from a high-density ocean-bottom seismic survey. J. Geophys. Res., 2008, 113, B03105, doi: 10.1029/2007JB004974
  • Shuichi Kodaira, Takeshi Sato, Narumi Takahashi, Aki Ito, Y. Tamura, Yoshiyuki Tatsumi, Yoshiyuki Kaneda. Seismological evidence for variable growth of crust along the Izu intra-oceanic arc,. J. Geophys. Res., 2007, 112, B05104, doi: 10.1029/2006JB004593
  • Seiichi Miura, Aki Ito, Narumi Takahashi, Shuichi Kodaira, Yoshiyuki Kaneda. Wide-angle seismic experiment crossing the southern Izu-Ogasawara Arc and multi-channel seismic profiling of the Ogasawara Plateau - KR07-03 cruise -. JAMSTEC Report R&D, 2007, 6, p. 39-51
  • Shuichi Kodaira, Takane Hori, Aki Ito, Seiichi Miura, Gou Fujie, Jin-Oh Park, Toshitaka Baba, Hide Sakaguchi, Yoshiyuki Kaneda. A cause of rupture segmentation and synchronization in the Nankai trough revealed by seismic imaging and numerical simulation. J. Geophys. Res., 2006, 111, 9, p. -, doi: 10.1029/2005JB004030
  • Gou Fujie, Aki Ito, Shuichi Kodaira, Narumi Takahashi, Yoshiyuki Kaneda. Confirming sharp bending of the Pacific plate in the northern Japan trench subduction zone by applying a traveltime mapping method. Physics of the Earth and Planetary Interiors, 2006, 157, 1, p. 72-85
  • Narumi Takahashi, Aki Ito, Shuichi Kodaira and Yoshiyuki Kaneda. Wide-angle seismic profiling across an active rifted zone in the middle Izu-Ogasawara arc -KY0511 cruise-. JAMSTEC Rep.Res.Dev, 2006, 4, p. 27-40
  • Tetsuro Tsuru, Seiichi Miura, Jin-Oh Park, Aki Ito, Gou Fujie, Yoshiyuki Kaneda, Tetsuo No, Takeshi Katayama, Junzo Kasahara. Variation of physical properties beneath a fault observed by a two-ship seismic survey off southwest Japan. JGR Solid Earth Geodesy and Gravity Tectonophysics, 2005, 110, p. B05405
  • Aki Ito, Gou Fujie, Seiichi Miura, Shuichi Kodaira, Yoshiyuki Kaneda, Ryota Hino,. Bending of the subducting oceanic plate and its implication for rupture propagation of large interplate earthquakes off Miyagi, Japan, in the Japan Trenach subduction zone. Geophys. Res. Lett., 2005, 32, L05310, doi: 10.1029/2004GL022307
  • Narumi Takahashi, Shuichi Kodaira, Takeshi Sato, Aki Ito, Tetuo No, Yoshiyuki Kaneda. Wide-angle seismic profiling of arc-arc collision zone in the northern Izu-Ogasawara arc - KY0408 cruise -. JAMSTEC Rep. Res. Dev., 2005, 1, p. 23-26
  • Narumi Takahashi, Shuichi Kodaira, Takeshi Sato, Aki Ito, Tetsuo No, Yoshiyuki Kaneda. Wide-angle seismic profiling of arc-arc collision zone in the northern Izu-Ogasawara arc - KY0408 cruise -. JAMSTEC Report R&D, 2005, 1, p. 23-36
  • Aki Ito, Gou Fujie, Teturo Tsuru, Shuichi Kodaira, Ayako Nakanishi, Yoshiyuki Kaneda,. Fault plane geometry in the source region of the 1994 Sanriku-oki earthquake. Earth Planet. Sci. Lett., 2004, 223, p. 163-175
  • Shuichi Kodaira, Ayako Nakanishi, Jin-Oh Park, Aki Ito, Tetsuro Tsuru, Yoshiyuki Kaneda. Cyclic ridge subduction t an inter-plate locked zone off central Japan. Geophys. Res. Lett., 2003, 30, doi: 10.1029/2002GL016595
  • Shuichi Kodaira, Seiichi Miura, Alex Jason Smith, Takeshi Sato, Tetsuro Tsuru, Gou Fujie, Aki Ito, Narumi Takahashi, Kiyoshi Suyehiro, Yoshiyuki Kaneda, Ryota Hino, K. Mochizuki, J. Kasahara, Toshihiko Kanazawa. Combined wide-angle and multichannel seismic survey at an asperity of subduction earthquakes in the Japan trench. Eos Trans., AGU, 2003, 84, 46
  • 伊藤 亜妃,日野亮太（東北大学）、西野実（東北大学）、藤本博巳（東北大学）、三浦誠一、小平秀一、長谷見晶子（山形大学）. エアガン人工地震探査による東北日本前弧域の地殻深部構造. 地震 , 2002