World's Best Scientists 2026 revealed!
Eiji Ohtani

Eiji Ohtani

Award Badge
Earth Science
Japan
2026

D-Index & Metrics

Earth Science

D-Index
88
Citations
22297
World Ranking
325
National Ranking
4

Research.com Recognitions

  • 2026 - Research.com Earth Science in Japan Leader Award
  • 2025 - Research.com Earth Science in Japan Leader Award
  • 2023 - Research.com Earth Science in Japan Leader Award
  • 2022 - Research.com Earth Science in Japan Leader Award
  • 2015 - Geochemistry Fellow Honor, Geochemical Society and the European Association of Geochemistry
  • 2006 - Fellow of American Geophysical Union (AGU)

Overview

Eiji Ohtani is affiliated with Tohoku University in Japan, contributing extensively to the field of Earth and Planetary Sciences. Their research primarily spans geophysics, with a strong focus on high-pressure geophysics and materials, geological and geochemical analysis, and earthquake and tectonic studies. The scientist's work also engages with planetary science and exploration, astro and planetary science, methane hydrates, and geotechnical and geomechanical engineering.

The scientist has published nearly a hundred papers in the area of Earth and Planetary Sciences, with a significant portion of their contributions found in prestigious venues such as Geophysical Research Letters and Progress in Earth and Planetary Science. Other frequent publication outlets include Meteoritics and Planetary Science, the Proceedings of the National Academy of Sciences, and Zenodo (CERN European Organization for Nuclear Research).

Ohtani's recent papers include:

  • "New developments in high-pressure X-ray diffraction beamline for diamond anvil cell at SPring-8," 2020, published in Matter and Radiation at Extremes
  • "Hydration and Dehydration in Earth's Interior," 2020, published in Annual Review of Earth and Planetary Sciences
  • "Superhydrous aluminous silica phases as major water hosts in high-temperature lower mantle," 2022, published in Proceedings of the National Academy of Sciences
  • "Dry metastable olivine and slab deformation in a wet subducting slab," 2021, published in Nature Geoscience
  • "Aluminum and hydrogen partitioning between bridgmanite and high-pressure hydrous phases: Implications for water storage in the lower mantle," 2022, published in Earth and Planetary Science Letters

Collaborations form an important component of Ohtani's research, with frequent coauthors including Takayuki Ishii, Daijo Ikuta, Leonid Dubrovinsky, Tatsuya Sakamaki, and Masaaki Miyahara. These partnerships span multiple projects and reflect interdisciplinary approaches within their research domain.

Ohtani's research topics can be summarized as follows:

  • High-pressure geophysics and materials
  • Geological and geochemical analysis
  • Earthquake and tectonic studies
  • Astro and planetary science
  • Planetary science and exploration
  • Methane hydrates and related phenomena
  • Geotechnical and geomechanical engineering

The scientist's contributions in the subfields include geophysics, astronomy and astrophysics, materials chemistry, mechanical engineering, and mechanics of materials, further illustrating the multidisciplinary nature of their work.

Ohtani has been recognized with distinctions such as the Geochemistry Fellow Honor from the Geochemical Society and the European Association of Geochemistry in 2015 and was named a Fellow of the American Geophysical Union in 2006.

Best Publications

  • Stagnant slab : A review

    Yoshio Fukao;Tomoeki Nakakuki;Hisashi Utada;Daisuke Suetsugu

  • Water transport into the deep mantle and formation of a hydrous transition zone

    Eiji Ohtani;Konstantin Litasov;Tomofumi Hosoya;Tomoaki Kubo

  • Intensive hydration of the mantle transition zone beneath China caused by ancient slab stagnation

    Takeshi Kuritani;Takeshi Kuritani;Eiji Ohtani;Jun Ichi Kimura

  • The Phase Boundary Between α- and β-Mg2SiO4 Determined by in Situ X-ray Observation

    H. Morishima;Takumi Kato;M. Suto;E. Ohtani

  • Water in the mantle

    Eiji Ohtani

  • A new high-pressure form of MgAl2O4

    T. Irifune;K. Fujino;E. Ohtani

  • Ponded melt at the boundary between the lithosphere and asthenosphere

    Tatsuya Sakamaki;Akio Suzuki;Eiji Ohtani;Hidenori Terasaki

  • East Asia: Seismotectonics, magmatism and mantle dynamics

    Dapeng Zhao;Sheng Yu;Eiji Ohtani

  • Stability of hydrous melt at the base of the Earth's upper mantle

    Tatsuya Sakamaki;Akio Suzuki;Eiji Ohtani

  • Deep slab subduction and dehydration and their geodynamic consequences: Evidence from seismology and mineral physics

    Dapeng Zhao;Eiji Ohtani

  • Stability of dense hydrous magnesium silicate phases in the systems Mg2SiO4-H2O and MgSiO3-H2O at pressures up to 27 GPa

    E. Ohtani;H. Mizobata;H. Yurimoto

  • Thermal expansion of .GAMMA.-Mg2SiO4.

    Isao Suzuki;Eiji Ohtani;Mineo Kumazawa

  • Density of basaltic melt at high pressure and stability of the melt at the base of the lower mantle

    Eiji Ohtani;Makoto Maeda

  • Phase relations and melt compositions in CMAS-pyrolite-H2O system up to 25 GPa

    Konstantin Litasov;Eiji Ohtani

  • Water solubility in Mg-perovskites and water storage capacity in the lower mantle

    Konstantin Litasov;Eiji Ohtani;Falko Langenhorst;Hisayoshi Yurimoto

  • Solidus of alkaline carbonatite in the deep mantle

    Konstantin D. Litasov;Anton Shatskiy;Eiji Ohtani;Gregory M. Yaxley

  • Stability of a hydrous δ-phase, AlOOH–MgSiO2(OH)2, and a mechanism for water transport into the base of lower mantle

    Itaru Ohira;Eiji Ohtani;Eiji Ohtani;Takeshi Sakai;Takeshi Sakai;Masaaki Miyahara

  • Partitioning of elements between majorite garnet and melt and implications for petrogenesis of komatiite

    Eiji Ohtani;Iwao Kawabe;Junko Moriyama;Yoshihiko Nagata

  • Solidus of carbonated peridotite from 10 to 20 GPa and origin of magnesiocarbonatite melt in the Earth's deep mantle

    Sujoy Ghosh;Eiji Ohtani;Konstantin D. Litasov;Hidenori Terasaki

  • Water in the Early Earth

    Y. Abe;E. Ohtani;T. Okuchi;K. Righter

  • The primodial terrestrial magma ocean and its implication for stratification of the mantle

    Eiji Ohtani

Frequent Co-Authors

Konstantin D. Litasov
Konstantin D. Litasov Institute for High Pressure Physics
Akio Suzuki
Akio Suzuki Tohoku University
Anton Shatskiy
Anton Shatskiy Novosibirsk State University
Ken-ichi Funakoshi
Ken-ichi Funakoshi Comprehensive Research Organization for Science and Society
Takumi Kikegawa
Takumi Kikegawa High Energy Accelerator Research Organization
Akira Yamaguchi
Akira Yamaguchi National Institute of Polar Research
Yuri N. Palyanov
Yuri N. Palyanov V.S. Sobolev Institute of Geology and Mineralogy
Yangting Lin
Yangting Lin Chinese Academy of Sciences
Nagayoshi Sata
Nagayoshi Sata Japan Agency for Marine-Earth Science and Technology
Ahmed El Goresy
Ahmed El Goresy University of Bayreuth

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