World's Best Scientists 2026 revealed!
Kunio Kaiho

Kunio Kaiho

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 46 4288 3944 98 89 174 6840

Kunio Kaiho publications per year

The chart shows the history of publications by Kunio Kaiho between 1981 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kunio Kaiho published across 46 years, from 1981 to 2026, averaging 4.2 papers a year. Output peaked at 17 publications in 2007. 9 of the 194 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1981 to 2026. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2007. 1981: 1 publication 1982: 0 publications 1983: 0 publications 1984: 1 publication 1985: 0 publications 1986: 3 publications 1987: 0 publications 1988: 1 publication 1989: 1 publication 1990: 2 publications 1991: 5 publications 1992: 13 publications 1993: 2 publications 1994: 4 publications 1995: 0 publications 1996: 1 publication 1997: 1 publication 1998: 2 publications 1999: 9 publications 2000: 0 publications 2001: 0 publications 2002: 1 publication 2003: 6 publications 2004: 1 publication 2005: 6 publications 2006: 6 publications 2007: 17 publications 2008: 4 publications 2009: 7 publications 2010: 3 publications 2011: 2 publications 2012: 4 publications 2013: 13 publications 2014: 14 publications 2015: 10 publications 2016: 10 publications 2017: 10 publications 2018: 2 publications 2019: 0 publications 2020: 2 publications 2021: 4 publications 2022: 10 publications 2023: 4 publications 2024: 3 publications 2025: 8 publications 2026: 1 publication
1981 2026

194 publications in total across all disciplines

View publications per year as a table
Kunio Kaiho: publications per year, 1981 to 2026
Year Publications
1981 1
1982 0
1983 0
1984 1
1985 0
1986 3
1987 0
1988 1
1989 1
1990 2
1991 5
1992 13
1993 2
1994 4
1995 0
1996 1
1997 1
1998 2
1999 9
2000 0
2001 0
2002 1
2003 6
2004 1
2005 6
2006 6
2007 17
2008 4
2009 7
2010 3
2011 2
2012 4
2013 13
2014 14
2015 10
2016 10
2017 10
2018 2
2019 0
2020 2
2021 4
2022 10
2023 4
2024 3
2025 8
2026 1
Total 194
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Kunio Kaiho 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 Kunio Kaiho 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, 168–177 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: 174 publications — 52nd percentile

52% 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
168–177 490 174
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
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Kunio Kaiho 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 Kunio Kaiho 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, 46 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: 46 D-Index — 55th percentile

55% 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 46
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

Kunio Kaiho is affiliated with Tohoku University in Japan and has contributed extensively to research in Earth and Planetary Sciences, with additional publications in Engineering. Their work spans key subfields including Paleontology, Ocean Engineering, Atmospheric Science, Mechanics of Materials, and Geochemistry and Petrology.

Their research covers a variety of topics related to paleontology and stratigraphy of fossils, geology and paleoclimatology research, drilling and well engineering, reservoir engineering and simulation methods, hydrocarbon exploration and reservoir analysis, geochemistry and elemental analysis, as well as geological and geochemical analysis.

Recent notable publications by Kunio Kaiho include:

  • Pulsed volcanic combustion events coincident with the end-Permian terrestrial disturbance and the following global crisis, 2020, Geology
  • Coronene, mercury, and biomarker data support a link between extinction magnitude and volcanic intensity in the Late Devonian, 2021, Global and Planetary Change
  • Volcanic temperature changes modulated volatile release and climate fluctuations at the end-Triassic mass extinction, 2022, Earth and Planetary Science Letters
  • Terrestrial ecosystem collapse and soil erosion before the end-Permian marine extinction: Organic geochemical evidence from marine and non-marine records, 2020, Global and Planetary Change
  • Relationship between extinction magnitude and climate change during major marine and terrestrial animal crises, 2022, Biogeosciences

Frequent co-authors collaborating with Kunio Kaiho include:

  • Ryosuke Saito
  • Li Tian
  • Kantaro Fujioka
  • Brian Taylor
  • Thomas R. Janecek

Kaiho has published numerous articles in prominent journals, with top publication venues including:

  • Global and Planetary Change
  • Palaeogeography Palaeoclimatology Palaeoecology
  • Scientific Reports
  • OPAL (Open@LaTrobe) (La Trobe University)
  • Zenodo (CERN European Organization for Nuclear Research)

Best Publications

  • Benthic foraminiferal dissolved-oxygen index and dissolved-oxygen levels in the modern ocean

    Kunio Kaiho

  • Effect of organic carbon flux and dissolved oxygen on the benthic foraminiferal oxygen index (BFOI)

    Kunio Kaiho

  • Global changes of Paleogene aerobic/anaerobic benthic foraminifera and deep-sea circulation

    Kunio Kaiho

  • Latest Paleocene benthic foraminiferal extinction and environmental changes at Tawanui, New Zealand

    Kunio Kaiho;Tetsuya Arinobu;Ryoshi Ishiwatari;Hugh E. G. Morgans

  • Complete biotic and sedimentary records of the Permian–Triassic transition from Meishan section, South China: Ecologically assessing mass extinction and its aftermath

    Zhong Qiang Chen;Hao Yang;Mao Luo;Michael J. Benton

  • A volcanic trigger for the Late Ordovician mass extinction? Mercury data from south China and Laurentia

    David S. Jones;Anna M. Martini;David A. Fike;Kunio Kaiho

  • Timing and magnitude of early Aptian extreme warming: Unraveling primary δ18O variation in indurated pelagic carbonates at Deep Sea Drilling Project Site 463, central Pacific Ocean

    Atsushi Ando;Atsushi Ando;Kunio Kaiho;Hodaka Kawahata;Hodaka Kawahata;Takeshi Kakegawa

  • End-Cenomanian benthic foraminiferal extinctions and oceanic dysoxic events in the northwestern Pacific Ocean

    Kunio Kaiho;Takashi Hasegawa

  • Planktonic and benthic foraminiferal extinction events during the last 100 m.y

    Kunio Kaiho

  • Early Triassic recovery of the brachiopod faunas from the end-Permian mass extinction: A global review

    Zhong Qiang Chen;Kunio Kaiho;Annette D. George

  • Spike of pyrosynthetic polycyclic aromatic hydrocarbons associated with an abrupt decrease in δ13C of a terrestrial biomarker at the Cretaceous-Tertiary boundary at Caravaca, Spain

    Tetsuya Arinobu;Ryoshi Ishiwatari;Kunio Kaiho;Marcos A. Lamolda

  • Survival strategies of brachiopod faunas from the end-Permian mass extinction

    Zhong Qiang Chen;Kunio Kaiho;Annette D. George

  • Global climate change driven by soot at the K-Pg boundary as the cause of the mass extinction

    Kunio Kaiho;Naga Oshima;Kouji Adachi;Yukimasa Adachi

  • Close-up of the end-Permian mass extinction horizon recorded in the Meishan section, South China: Sedimentary, elemental, and biotic characterization and a negative shift of sulfate sulfur isotope ratio

    Kunio Kaiho;Zhong Qiang Chen;Hodaka Kawahata;Yoshimichi Kajiwara

  • Anomalous shifts in tropical Pacific planktonic and benthic foraminiferal test size during the Paleocene–Eocene thermal maximum

    Kunio Kaiho;Kotaro Takeda;Maria Rose Petrizzo;James C. Zachos

  • Onset of biotic and environmental recovery from the end-Permian mass extinction within 1–2 million years: A case study of the Lower Triassic of the Meishan section, South China

    Z.Q. Chen;Jinnan Tong;Kunio Kaiho;Hodaka Kawahata

  • End-Cretaceous devastation of terrestrial flora in the boreal Far East

    Unknown

  • Oceanic primary productivity and dissolved oxygen levels at the Cretaceous/Tertiary boundary: Their decrease, subsequent warming, and recovery

    Kunio Kaiho;Yoshimichi Kajiwara;Kazue Tazaki;Masato Ueshima

  • Explosive Deep Water Basalt in the Sumisu Backarc Rift

    J. Gill;P. Torssander;H. Lapierre;R. Taylor

  • Faunal turnovers in central Pacific benthic foraminifera during the Paleocene–Eocene thermal maximum

    Kotaro Takeda;Kunio Kaiho

  • A low extinction rate of intermediate-water benthic foraminifera at the Cretaceous/Tertiary boundary

    Kunio Kaiho

Frequent Co-Authors

Zhong-Qiang Chen
Zhong-Qiang Chen China University of Geosciences
Jinnan Tong
Jinnan Tong China University of Geosciences
Hodaka Kawahata
Hodaka Kawahata University of Tokyo
Ryoshi Ishiwatari
Ryoshi Ishiwatari Tokyo Metropolitan University
Tsuyoshi Komiya
Tsuyoshi Komiya University of Tokyo
Laishi Zhao
Laishi Zhao China University of Geosciences
Takeyoshi Yoshida
Takeyoshi Yoshida Tohoku University
Kazuyoshi Takayama
Kazuyoshi Takayama Tohoku University
Guang Rong Shi
Guang Rong Shi University of Wollongong
Kouji Adachi
Kouji Adachi Japan Meteorological Agency

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