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Earth Science

D-Index
35
Citations
4608
World Ranking
7622
National Ranking
222

Overview

Kohtaro Ujiie is affiliated with the University of Tsukuba in Japan and has contributed extensively to research in Earth and Planetary Sciences, Environmental Science, and Engineering. Their work spans several subfields including Geophysics, Environmental Chemistry, Ocean Engineering, Atmospheric Science, and Mechanics of Materials.

The scientist's research focuses on topics such as Methane Hydrates and Related Phenomena, Seismic Imaging and Inversion Techniques, earthquake and tectonic studies, Reservoir Engineering and Simulation Methods, Geological and Geochemical Analysis, High-pressure geophysics and materials, and Geology and Paleoclimatology Research.

Ujiie has published papers in multiple prominent scientific venues, some of which include:

  • Hydrous oceanic crust hosts megathrust creep at low shear stresses, 2020, Science Advances
  • Frictional Strengths of Subduction Thrust Rocks in the Region of Shallow Slow Earthquakes, 2020, Journal of Geophysical Research Solid Earth
  • Fluid overpressure in subduction plate boundary caused by mantle-derived fluids, 2020, Earth and Planetary Science Letters
  • Evidence of Localized Failure Along Altered Basaltic Blocks in Tectonic Mélange at the Updip Limit of the Seismogenic Zone: Implications for the Shallow Slow Earthquake Source, 2020, Geochemistry Geophysics Geosystems
  • Embrittlement Within Viscous Shear Zones Across the Base of the Subduction Thrust Seismogenic Zone, 2022, Geochemistry Geophysics Geosystems

Frequent publication venues for their work include Zenodo (CERN European Organization for Nuclear Research), OPAL (Open@LaTrobe) (La Trobe University), Geochemistry Geophysics Geosystems, Journal of Geophysical Research Solid Earth, and Geophysical Research Letters.

In addition to articles, Ujiie has contributed to book publications with titles such as Expedition 405 Scientific Prospectus: Tracking Tsunamigenic Slip Across the Japan Trench (JTRACK), published in 2023 and 2024 by Scientific Prospectus, and Tracking Tsunamigenic Slip Across the Japan Trench (JTRACK), expected in 2025 from Proceedings of the International Ocean Discovery Program. These works relate to ongoing research on seismic activity and subduction zones.

The scientist has collaborated frequently with researchers including Marianne Conin, Gaku Kimura, Michael B. Underwood, Toshiya Kanamatsu, and Saneatsu Saito.

Best Publications

  • Structure and composition of the plate-boundary slip zone for the 2011 Tohoku-Oki earthquake.

    Frederick M. Chester;Christie Rowe;Kohtaro Ujiie;James Kirkpatrick

  • Low Coseismic Shear Stress on the Tohoku-Oki Megathrust Determined from Laboratory Experiments

    Kohtaro Ujiie;Kohtaro Ujiie;Hanae Tanaka;Tsubasa Saito;Akito Tsutsumi

  • New insights into deformation and fluid flow processes in the Nankai Trough accretionary prism: Results of Ocean Drilling Program Leg 190

    Gregory F. Moore;Asahiko Taira;Adam Klaus;Luann Becker

  • Seismic slip propagation to the updip end of plate boundary subduction interface faults: Vitrinite reflectance geothermometry on Integrated Ocean Drilling Program NanTro SEIZE cores

    Arito Sakaguchi;Frederick Chester;Daniel Curewitz;Olivier Fabbri

  • Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake

    Weiren Lin;Weiren Lin;Weiren Lin;Marianne Conin;Marianne Conin;J. Casey Moore;Frederick M. Chester

  • Transition of accretionary wedge structures around the up-dip limit of the seismogenic subduction zone

    Gaku Kimura;Gaku Kimura;Yujin Kitamura;Yoshitaka Hashimoto;Asuka Yamaguchi

  • An Explanation of Episodic Tremor and Slow Slip Constrained by Crack-Seal Veins and Viscous Shear in Subduction Mélange

    Kohtaro Ujiie;Kohtaro Ujiie;Hanae Saishu;Åke Fagereng;Naoki Nishiyama

  • The thickness of subduction plate boundary faults from the seafloor into the seismogenic zone

    Christie D. Rowe;J. Casey Moore;Francesca Remitti

  • Tectonic mélange as fault rock of subduction plate boundary

    Gaku Kimura;Asuka Yamaguchi;Megumi Hojo;Yujin Kitamura

  • High-velocity frictional properties of clay-rich fault gouge in a megasplay fault zone, Nankai subduction zone

    Kohtaro Ujiie;Akito Tsutsumi

  • Mélange and its seismogenic roof décollement: A plate boundary fault rock in the subduction zone—An example from the Shimanto Belt, Japan

    Yujin Kitamura;Katsushi Sato;Eisei Ikesawa;Kotoe Ikehara-Ohmori

  • Pseudotachylytes in an ancient accretionary complex and implications for melt lubrication during subduction zone earthquakes

    Kohtaro Ujiie;Haruka Yamaguchi;Arito Sakaguchi;Shoichi Toh

  • Tectonic incorporation of the upper part of oceanic crust to overriding plate of a convergent margin : An example from the Cretaceous-early Tertiary Mugi Melange, the Shimanto Belt Japan

    Eisei Ikesawa;Gaku Kimura;Gaku Kimura;Katsushi Sato;Kotoe Ikehara-Ohmori

  • Evolution and kinematics of an ancient décollement zone, mélange in the Shimanto accretionary complex of Okinawa Island, Ryukyu Arc

    Kohtaro Ujiie

  • Pelagic smectite as an important factor in tsunamigenic slip along the Japan Trench

    Jun Kameda;Mayuko Shimizu;Kohtaro Ujiie;Takehiro Hirose

  • Fluidization of granular material in a subduction thrust at seismogenic depths

    Kohtaro Ujiie;Asuka Yamaguchi;Gaku Kimura;Shoichi Toh

  • Deformation and fluid pressure variation during initiation and evolution of the plate boundary décollement zone in the Nankai accretionary prism

    Kohtaro Ujiie;Toshio Hisamitsu;Asahiko Taira

  • Rapid pulses of uplift, subsidence, and subduction erosion offshore Central America: Implications for building the rock record of convergent margins

    Paola Vannucchi;Paola Vannucchi;Peter B. Sak;Jason P. Morgan;Ken’ichi Ohkushi

  • The State of Stress on the Fault Before, During, and After a Major Earthquake

    Emily E. Brodsky;James J. Mori;Louise Anderson;Frederick M. Chester

  • Earthquake faulting in subduction zones: insights from fault rocks in accretionary prisms

    Kohtaro Ujiie;Kohtaro Ujiie;Gaku Kimura

Frequent Co-Authors

Gaku Kimura
Gaku Kimura Japan Agency for Marine-Earth Science and Technology
Åke Fagereng
Åke Fagereng Cardiff University
Jim Mori
Jim Mori Kyoto University
Hiroyuki Kagi
Hiroyuki Kagi University of Tokyo
Achim J Kopf
Achim J Kopf University of Bremen
Weiren Lin
Weiren Lin Kyoto University
Virginia Toy
Virginia Toy Johannes Gutenberg University of Mainz
Asahiko Taira
Asahiko Taira Japan Agency for Marine-Earth Science and Technology
Robert N. Harris
Robert N. Harris Oregon State University

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