World's Best Scientists 2026 revealed!
Naoto Takahata

Naoto Takahata

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 38 6463 5987 178 167 310 5775

Naoto Takahata publications per year

The chart shows the history of publications by Naoto Takahata between 1961 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Naoto Takahata published across 65 years, from 1961 to 2025, averaging 5.2 papers a year. Output peaked at 32 publications in 2016. 21 of the 338 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1961 to 2025. Vertical axis: number of publications, 0 to 32. Peak 32 publications in 2016. 1961: 1 publication 1962: 0 publications 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 1 publication 1989: 0 publications 1990: 0 publications 1991: 1 publication 1992: 0 publications 1993: 1 publication 1994: 0 publications 1995: 2 publications 1996: 0 publications 1997: 1 publication 1998: 3 publications 1999: 0 publications 2000: 1 publication 2001: 1 publication 2002: 1 publication 2003: 4 publications 2004: 3 publications 2005: 7 publications 2006: 7 publications 2007: 4 publications 2008: 15 publications 2009: 14 publications 2010: 16 publications 2011: 10 publications 2012: 10 publications 2013: 10 publications 2014: 19 publications 2015: 19 publications 2016: 32 publications 2017: 25 publications 2018: 27 publications 2019: 28 publications 2020: 27 publications 2021: 13 publications 2022: 8 publications 2023: 6 publications 2024: 13 publications 2025: 8 publications
1961 2025

338 publications in total across all disciplines

View publications per year as a table
Naoto Takahata: publications per year, 1961 to 2025
Year Publications
1961 1
1962 0
1963 0
1964 0
1965 0
1966 0
1967 0
1968 0
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 1
1989 0
1990 0
1991 1
1992 0
1993 1
1994 0
1995 2
1996 0
1997 1
1998 3
1999 0
2000 1
2001 1
2002 1
2003 4
2004 3
2005 7
2006 7
2007 4
2008 15
2009 14
2010 16
2011 10
2012 10
2013 10
2014 19
2015 19
2016 32
2017 25
2018 27
2019 28
2020 27
2021 13
2022 8
2023 6
2024 13
2025 8
Total 338
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Naoto Takahata 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 Naoto Takahata 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, 308–317 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: 310 publications — 88th percentile

88% 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
308–317 107 310
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
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Naoto Takahata 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 Naoto Takahata 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, 38 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: 38 D-Index — 31st percentile

31% 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 38
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
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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Overview

Naoto Takahata is affiliated with the University of Tokyo in Japan and specializes in Earth and Planetary Sciences. Their research primarily spans geophysics, atmospheric science, environmental chemistry, oceanography, and astronomy and astrophysics. Takahata's extensive body of work includes investigations in geological and geochemical analysis, earthquake and tectonic studies, methane hydrates and related phenomena, and high-pressure geophysics and materials.

The scientist's research covers a broad array of topics, notably:

  • Geological and Geochemical Analysis
  • Earthquake and Tectonic Studies
  • Methane Hydrates and Related Phenomena
  • High-Pressure Geophysics and Materials
  • Geology and Paleoclimatology Research
  • Hydrocarbon Exploration and Reservoir Analysis
  • Paleontology and Stratigraphy of Fossils

Takahata has published numerous papers in notable scientific journals. Frequent publication venues include:

  • Scientific Reports
  • ACS Earth and Space Chemistry
  • Earth and Planetary Science Letters
  • Frontiers in Earth Science
  • GEOCHEMICAL JOURNAL

Some recent notable papers are:

  • Displaced cratonic mantle concentrates deep carbon during continental rifting, 2020, Nature
  • Degassing of deep-sourced CO2 from Xianshuihe-Anninghe fault zones in the eastern Tibetan Plateau, 2021, Science China Earth Sciences
  • Isotopic ratios of uranium and caesium in spherical radioactive caesium-bearing microparticles derived from the Fukushima Dai-ichi Nuclear Power Plant, 2020, Scientific Reports
  • Landside tritium leakage over through years from Fukushima Dai-ichi nuclear plant and relationship between countermeasures and contaminated water, 2020, Scientific Reports
  • Magmatic fluids play a role in the development of active gas chimneys and massive gas hydrates in the Japan Sea, 2020, Chemical Geology

Takahata has collaborated frequently with several coauthors, including:

  • Yuji Sano
  • Takanori Kagoshima
  • Hyunwoo Lee
  • Kotaro Shirai
  • Glen Snyder

The scope of Takahata's work in Earth and Planetary Sciences reflects a significant engagement with processes shaping the Earth's composition, tectonic activity, and environmental chemistry. Their contributions include both field studies and laboratory analyses addressing complex geological questions such as deep carbon cycling, isotopic tracing of radioactive materials, and gas hydrate formation.

Best Publications

  • Ground-water radon anomaly before the kobe earthquake in Japan.

    G. Igarashi;S. Saeki;N. Takahata;K. Sumikawa

  • Carbon and nitrogen assimilation in deep subseafloor microbial cells.

    Yuki Morono;Takeshi Terada;Manabu Nishizawa;Motoo Ito

  • The 3He/4He ratio of the new internal He Standard of Japan (HESJ).

    J. Matsuda;T. Matsumoto;H. Sumino;K. Nagao

  • Early trace of life from 3.95 Ga sedimentary rocks in Labrador, Canada

    Takayuki Tashiro;Akizumi Ishida;Masako Hori;Masako Hori;Motoko Igisu

  • Volcanic flux of nitrogen from the Earth

    Yuji Sano;Naoto Takahata;Yoshiro Nishio;Tobias P Fischer

  • Hydrothermal fluid geochemistry at the Iheya North field in the mid-Okinawa trough: Implication for origin of methane in subseafloor fluid circulation systems

    Shinsuke Kawagucci;Shinsuke Kawagucci;Hitoshi Chiba;Jun Ichiro Ishibashi;Toshiro Yamanaka

  • High-Mg adakite and low-Ca boninite from a bonin fore-arc seamount: Implications for the reaction between slab melts and depleted mantle

    Yi Bing Li;Jun Ichi Kimura;Shiki Machida;Teruaki Ishii

  • Past daily light cycle recorded in the strontium/calcium ratios of giant clam shells

    Yuji Sano;Sayumi Kobayashi;Sayumi Kobayashi;Kotaro Shirai;Naoto Takahata

  • Microdistribution of Mg/Ca, Sr/Ca, and Ba/Ca ratios in Pulleniatina obliquiloculata test by using a NanoSIMS: Implication for the vital effect mechanism

    Daisuke Kunioka;Kotaro Shirai;Naoto Takahata;Yuji Sano

  • New chronological constraints for Cryogenian to Cambrian rocks in the Three Gorges, Weng'an and Chengjiang areas, South China

    Yoshihiro Okada;Yusuke Sawaki;Tsuyoshi Komiya;Takafumi Hirata

  • Exploring the structural controls on helium, nitrogen and carbon isotope signatures in hydrothermal fluids along an intra-arc fault system

    Daniele Tardani;Martin Reich;Emilie Roulleau;Naoto Takahata

  • Ten-year helium anomaly prior to the 2014 Mt Ontake eruption

    Yuji Sano;Takanori Kagoshima;Naoto Takahata;Yoshiro Nishio

  • Nitrogen recycling in subduction zones

    Yuji Sano;Naoto Takahata;Yoshiro Nishio;Bernard Marty

  • Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance to the geographical distribution of whole hydrothermal circulation

    Shinsuke Kawagucci;Shinsuke Kawagucci;Yuichiro Ueno;Yuichiro Ueno;Ken Takai;Tomohiro Toki

  • Sulphur geodynamic cycle

    Takanori Kagoshima;Yuji Sano;Naoto Takahata;Teruyuki Maruoka

  • Helium degassing related to the Kobe earthquake

    Yuji Sano;Naoto Takahata;George Igarashi;Naoji Koizumi

  • Metamorphic P–T–time history of the Sanbagawa belt in central Shikoku, Japan and implications for retrograde metamorphism during exhumation

    Kazumasa Aoki;Kouki Kitajima;Hideki Masago;Manabu Nishizawa

  • Geographical Distribution of 3 He/ 4 He Ratios in the Chugoku District, Southwestern Japan

    Yuji Sano;Naoto Takahata;Tetsuzo Seno

  • Groundwater helium anomaly reflects strain change during the 2016 Kumamoto earthquake in Southwest Japan

    Yuji Sano;Naoto Takahata;Takanori Kagoshima;Tomo Shibata

  • Displaced cratonic mantle concentrates deep carbon during continental rifting

    James D. Muirhead;James D. Muirhead;Tobias P. Fischer;Sarah J. Oliva;Amani Laizer

  • Accurate measurement of atmospheric helium isotopes.

    Yuji Sano;Taichi Tokutake;Naoto Takahata

Frequent Co-Authors

Yuji Sano
Yuji Sano Kōchi University
Tobias P. Fischer
Tobias P. Fischer University of New Mexico
Urumu Tsunogai
Urumu Tsunogai Nagoya University
Toshitaka Gamo
Toshitaka Gamo University of Tokyo
Hajime Obata
Hajime Obata University of Tokyo
Shigenori Maruyama
Shigenori Maruyama Tokyo Institute of Technology
Yuichiro Ueno
Yuichiro Ueno Tokyo Institute of Technology
Minoru Ikehara
Minoru Ikehara Kōchi University
Tsuyoshi Komiya
Tsuyoshi Komiya University of Tokyo
Ken Takai
Ken Takai Japan Agency for Marine-Earth Science and Technology

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