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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 39 6149 5695 167 156 458 5686

Ken Ikehara publications per year

The chart shows the history of publications by Ken Ikehara between 1980 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ken Ikehara published across 46 years, from 1980 to 2025, averaging 10.2 papers a year. Output peaked at 47 publications in 2018. 18 of the 469 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1980 to 2025. Vertical axis: number of publications, 0 to 47. Peak 47 publications in 2018. 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 2 publications 1986: 0 publications 1987: 0 publications 1988: 5 publications 1989: 1 publication 1990: 3 publications 1991: 4 publications 1992: 3 publications 1993: 3 publications 1994: 6 publications 1995: 3 publications 1996: 4 publications 1997: 2 publications 1998: 4 publications 1999: 2 publications 2000: 2 publications 2001: 4 publications 2002: 5 publications 2003: 6 publications 2004: 10 publications 2005: 7 publications 2006: 9 publications 2007: 19 publications 2008: 9 publications 2009: 7 publications 2010: 7 publications 2011: 8 publications 2012: 17 publications 2013: 32 publications 2014: 38 publications 2015: 31 publications 2016: 21 publications 2017: 36 publications 2018: 47 publications 2019: 19 publications 2020: 22 publications 2021: 18 publications 2022: 9 publications 2023: 25 publications 2024: 5 publications 2025: 13 publications
1980 2025

469 publications in total across all disciplines

View publications per year as a table
Ken Ikehara: publications per year, 1980 to 2025
Year Publications
1980 1
1981 0
1982 0
1983 0
1984 0
1985 2
1986 0
1987 0
1988 5
1989 1
1990 3
1991 4
1992 3
1993 3
1994 6
1995 3
1996 4
1997 2
1998 4
1999 2
2000 2
2001 4
2002 5
2003 6
2004 10
2005 7
2006 9
2007 19
2008 9
2009 7
2010 7
2011 8
2012 17
2013 32
2014 38
2015 31
2016 21
2017 36
2018 47
2019 19
2020 22
2021 18
2022 9
2023 25
2024 5
2025 13
Total 469
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Ken Ikehara 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 Ken Ikehara 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, 458–467 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: 458 publications — 97th percentile

97% 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 29 458
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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Ken Ikehara 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 Ken Ikehara 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, 39 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: 39 D-Index — 35th percentile

35% 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 39
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

Ken Ikehara is affiliated with the National Institute of Advanced Industrial Science and Technology in Japan. Their research spans multiple aspects of Earth and Planetary Sciences and Environmental Science, with notable contributions to the fields of Geophysics, Atmospheric Science, Environmental Chemistry, Earth-Surface Processes, and Geology.

The scientist's work extensively covers topics such as:

  • Geology and Paleoclimatology Research
  • Methane Hydrates and Related Phenomena
  • Earthquake and Tectonic Studies
  • Geological and Geochemical Analysis
  • Geological Formations and Processes
  • Geological and Geophysical Studies
  • Hydrocarbon Exploration and Reservoir Analysis

Ken Ikehara has frequently published in several scientific venues, including:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Progress in Earth and Planetary Science
  • Geological Society London Special Publications
  • Marine Geology
  • Nature Communications

Key recent papers authored or coauthored by Ken Ikehara include:

  • "Event-dominated transport, provenance, and burial of organic carbon in the Japan Trench," 2021, Earth and Planetary Science Letters
  • "Repeated occurrence of surface-sediment remobilization along the landward slope of the Japan Trench by great earthquakes," 2020, Earth Planets and Space
  • "Isotopic and sedimentary signature of megathrust ruptures along the Japan subduction margin," 2020, Marine Geology
  • "Multivariate Statistical and Multiproxy Constraints on Earthquake-Triggered Sediment Remobilization Processes in the Central Japan Trench," 2020, Geochemistry Geophysics Geosystems
  • "Characteristics and distribution of the event deposits induced by the 2011 Tohoku-oki earthquake and tsunami offshore of Sanriku and Sendai, Japan," 2020, Sedimentary Geology

The scientist has also contributed to academic books published by:

  • Proceedings of the International Ocean Discovery Program. Expedition reports (including "Japan Trench Paleoseismology," 2023)
  • Preliminary report (including "Expedition 386 Preliminary Report: Japan Trench Paleoseismology," 2023)

Ken Ikehara collaborates frequently with several researchers, including:

  • Michael Strasser
  • Toshiya Kanamatsu
  • Takuya Itaki
  • Kan-Hsi Hsiung
  • Arata Kioka

Best Publications

  • Submarine Mass Movements and Their Consequences

    Yasuhiro Yamada;Kiichiro Kawamura;Ken Ikehara;Yujiro Ogawa

  • Transgressive and highstand systems tracts and post-glacial transgression, the East China Sea

    Yoshiki Saito;Hajime Katayama;Ken Ikehara;Yoshihisa Kato

  • Submarine Mass Movements and Their Consequences

    Unknown

  • Abrupt ventilation changes in the Japan Sea over the last 30 ky: Evidence from deep-dwelling radiolarians

    Takuya Itaki;Ken Ikehara;Isao Motoyama;Shiro Hasegawa

  • Documenting large earthquakes similar to the 2011 Tohoku-oki earthquake from sediments deposited in the Japan Trench over the past 1500 years

    Ken Ikehara;Toshiya Kanamatsu;Yoshitaka Nagahashi;Michael Strasser

  • Rock-magnetic changes with reduction diagenesis in Japan Sea sediments and preservation of geomagnetic secular variation in inclination during the last 30,000 years

    Toshitsugu Yamazaki;Abdelaziz L. Abdeldayem;Ken Ikehara

  • Orbital-scale stratigraphy and high-resolution analysis of biogenic components and deep-water oxygenation conditions in the Japan Sea during the last 640 kyr

    Yoshiki Kido;Ikue Minami;Ryuji Tada;Kazuho Fujine

  • Sediment fabrics, oxygenation history, and circulation modes of Japan Sea during the Late Quaternary

    Satoko Watanabe;Ryuji Tada;Ken Ikehara;Kazuho Fujine

  • Late Quaternary Seasonal Sea-Ice History of the Northeastern Japan Sea

    K. E. N. Ikehara

  • A slump in the trench:Tracking the impact of the 2011 Tohoku-Oki earthquake

    M. Strasser;M. Kölling;C. dos Santos Ferreira;H.G. Fink

  • Changes in biological production in the mixed water region (MWR) of the northwestern North Pacific during the last 27 kyr

    Kayo Minoshima;Hodaka Kawahata;Hodaka Kawahata;Ken Ikehara

  • Possible submarine tsunami deposits on the outer shelf of Sendai Bay, Japan resulting from the 2011 earthquake and tsunami off the Pacific coast of Tohoku

    Ken Ikehara;Tomohisa Irino;Kazuko Usami;Robert Jenkins

  • Marine sediments and late Quaternary stratigraphy in the southeastern part of the Japan Sea. Concerning the timing of dark layer deposition.

    Takeshi Nakajima;Kiyoshi Kikkawa;Ken Ikehara;Hajime Katayama

  • A 6600 year earthquake history in the region of the 2004 Sumatra-Andaman subduction zone earthquake

    Jason R. Patton;Chris Goldfinger;Ann E. Morey;Ken Ikehara

  • Megathrust earthquake drives drastic organic carbon supply to the hadal trench

    A. Kioka;T. Schwestermann;J. Moernaut;K. Ikehara

  • Millennial-scale fluctuations in seasonal sea-ice and deep-water formation in the Japan Sea during the late Quaternary

    Ken Ikehara;Takuya Itaki

  • Paleomagnetic record from Academician Ridge, Lake Baikal: a reversal excursion at the base of marine oxygen isotope stage 6

    H Oda;K Nakamura;K Ikehara;T Nakano

  • Late Quaternary changes in intermediate water oxygenation and oxygen minimum zone, northern Japan: A benthic foraminiferal perspective

    Akihiko Shibahara;Ken'ichi Ohkushi;James P. Kennett;Ken Ikehara

  • Middle to late Holocene changes of the Okhotsk Sea Intermediate Water and their relation to atmospheric circulation

    Takuya Itaki;Ken Ikehara

  • Event Stratigraphy in a Hadal Oceanic Trench: The Japan Trench as Sedimentary Archive Recording Recurrent Giant Subduction Zone Earthquakes and Their Role in Organic Carbon Export to the Deep Sea

    Arata Kioka;Arata Kioka;Tobias Schwestermann;Jasper Moernaut;Ken Ikehara

  • Integrated tephrostratigraphy and stable isotope stratigraphy in the Japan Sea and East China Sea using IODP Sites U1426, U1427, and U1429, Expedition 346 Asian Monsoon

    Takuya Sagawa;Yoshitaka Nagahashi;Yasufumi Satoguchi;Ann Holbourn

  • Distribution and origin of subaqueous dunes on the shelf of Japan

    Ken Ikehara;Yasumasa Kinoshita

  • Intermediate water ventilation change in the subarctic northwest Pacific during the last deglaciation

    Takuya Sagawa;Ken Ikehara

Frequent Co-Authors

Michael Strasser
Michael Strasser University of Innsbruck
Juichiro Ashi
Juichiro Ashi University of Tokyo
Ryuji Tada
Ryuji Tada University of Tokyo
Takuya Itaki
Takuya Itaki National Institute of Advanced Industrial Science and Technology
Shuichi Kodaira
Shuichi Kodaira Japan Agency for Marine-Earth Science and Technology
Masanobu Yamamoto
Masanobu Yamamoto Hokkaido University
Richard W. Murray
Richard W. Murray Boston University
Masao Uchida
Masao Uchida National Institute for Environmental Studies

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