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Eiji Ohtani

Eiji Ohtani

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Earth Science
Japan
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 88 325 279 4 4 690 22297

Eiji Ohtani publications per year

The chart shows the history of publications by Eiji Ohtani between 1974 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Eiji Ohtani published across 52 years, from 1974 to 2025, averaging 14.3 papers a year. Output peaked at 53 publications in 2014. 7 of the 743 publications appeared in the last two years.

No. of publications
10 20 30 40 50
Bar chart. Horizontal axis: year, 1974 to 2025. Vertical axis: number of publications, 0 to 53. Peak 53 publications in 2014. 1974: 1 publication 1975: 1 publication 1976: 1 publication 1977: 0 publications 1978: 0 publications 1979: 2 publications 1980: 1 publication 1981: 2 publications 1982: 2 publications 1983: 2 publications 1984: 4 publications 1985: 2 publications 1986: 2 publications 1987: 2 publications 1988: 5 publications 1989: 6 publications 1990: 2 publications 1991: 6 publications 1992: 5 publications 1993: 2 publications 1994: 3 publications 1995: 5 publications 1996: 7 publications 1997: 5 publications 1998: 13 publications 1999: 4 publications 2000: 10 publications 2001: 11 publications 2002: 15 publications 2003: 28 publications 2004: 23 publications 2005: 28 publications 2006: 30 publications 2007: 37 publications 2008: 41 publications 2009: 48 publications 2010: 30 publications 2011: 41 publications 2012: 18 publications 2013: 44 publications 2014: 53 publications 2015: 35 publications 2016: 35 publications 2017: 32 publications 2018: 22 publications 2019: 19 publications 2020: 13 publications 2021: 15 publications 2022: 18 publications 2023: 5 publications 2024: 4 publications 2025: 3 publications
1974 2025

743 publications in total across all disciplines

View publications per year as a table
Eiji Ohtani: publications per year, 1974 to 2025
Year Publications
1974 1
1975 1
1976 1
1977 0
1978 0
1979 2
1980 1
1981 2
1982 2
1983 2
1984 4
1985 2
1986 2
1987 2
1988 5
1989 6
1990 2
1991 6
1992 5
1993 2
1994 3
1995 5
1996 7
1997 5
1998 13
1999 4
2000 10
2001 11
2002 15
2003 28
2004 23
2005 28
2006 30
2007 37
2008 41
2009 48
2010 30
2011 41
2012 18
2013 44
2014 53
2015 35
2016 35
2017 32
2018 22
2019 19
2020 13
2021 15
2022 18
2023 5
2024 4
2025 3
Total 743
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Eiji Ohtani publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Eiji Ohtani sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 603+ publications, is where this scientist sits. 38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38–47 publications 603+

This scientist: 690 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414
188–197 401
198–207 333
208–217 292
218–227 290
228–237 262
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100 690
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Eiji Ohtani D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Eiji Ohtani sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 88 D-Index, is where this scientist sits. 30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 88 D-Index — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178
52 182
53 178
54 163
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30 88
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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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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