World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
42
Citations
8170
World Ranking
5169
National Ranking
134

Ryoshi Ishiwatari 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 Ryoshi Ishiwatari sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

This scientist: 158 publications — 40th percentile

40% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 510 publications or more.

Ryoshi Ishiwatari 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 Ryoshi Ishiwatari sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

This scientist: 42 D-Index — 33rd percentile

33% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 94 D-Index or more.

Overview

Ryoshi Ishiwatari is affiliated with Tokyo Metropolitan University in Japan. Their academic profile is focused on research activities conducted within this institution.

There are no recent papers, co-authors, publication venues, book publications, fields of study, subfields, main research topics, or awards listed in the available data for Ryoshi Ishiwatari.

Given the available information, the profile centers mainly on their institutional association without further details on research output or specific scientific contributions.

Best Publications

  • Lacustrine organic geochemistry—an overview of indicators of organic matter sources and diagenesis in lake sediments

    Philip A. Meyers;Ryoshi Ishiwatari

  • Organic Matter Accumulation Records in Lake Sediments

    P. A. Meyers;R. Ishiwatari

  • Biodegradation experiments of linear alkylbenzenes (LABs): isomeric composition of C12 LABs as an indicator of the degree of LAB degradation in the aquatic environment.

    Hideshige Takada;Ryoshi Ishiwatari

  • Linear alkylbenzenes in urban riverine environments in Tokyo: distribution, source, and behavior

    Hideshige. Takada;Ryoshi. Ishiwatari

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

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

  • The Early Diagenesis of Organic Matter in Lacustrine Sediments

    Philip A. Meyers;Ryoshi Ishiwatari

  • Source identification of Malaysian atmospheric polycyclic aromatic hydrocarbons nearby forest fires using molecular and isotopic compositions

    Tomoaki Okuda;Hidetoshi Kumata;Mohamad Pauzi Zakaria;Hiroshi Naraoka

  • Diagenetic changes of lignin compounds in a more than 0.6 million-year-old lacustrine sediment (Lake Biwa, Japan)

    Ryoshi Ishiwatari;Minoru Uzaki

  • Molecular-isotopic stratigraphy of long-chain n-alkanes in Lake Baikal Holocene and glacial age sediments

    David Brincat;Keita Yamada;Ryoshi Ishiwatari;Hitoshi Uemura

  • Thermal alteration experiments on organic matter from recent marine sediments in relation to petroleum genesis

    R Ishiwatari;M Ishiwatari;B.G Rohrback;I.R Kaplan

  • 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

  • Organic geochemistry of a lacustrine sediment (Lake Haruna, Japan)

    Ryoshi Ishiwatari;Kazuko Ogura;Shoji Horie

  • Alkylbenzene pollution of Tokyo Bay sediments

    Ryoshi Ishiwatari;Hideshige Takada;Sun-Ja Yun;Eiji Matsumoto

  • Macromolecular material (humic substance) in the water column and sediments

    Ryoshi Ishiwatari

  • Early diagenesis of organic matter in the water column and sediments: Microbial degradation and resynthesis of lipids in Lake Haruna

    Kimitaka Kawamura;Ryoshi Ishiwatari;Kazuko Ogura

  • Generation of unsaturated and aromatic hydrocarbons by thermal alteration of young kerogen

    Ryoshi Ishiwatari;Kazuo Fukushima

  • Alkenone-sea surface temperatures in the Japan Sea over the past 36 kyr: warm temperatures at the last glacial maximum

    R Ishiwatari;M Houtatsu;H Okada

  • 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

  • Molecular and isotopic abundances of long-chain n-fatty acids in open marine sediments of the western North Pacific

    Hiroshi Naraoka;Ryoshi Ishiwatari

  • Upward decrease of organic C/N ratios in the Okinawa Trough cores: proxy for tracing the post-glacial retreat of the continental shore line

    Hiroshi Ujiié;Yasuhide Hatakeyama;Xue Xin Gu;Shuichi Yamamoto

Frequent Co-Authors

Kimitaka Kawamura
Kimitaka Kawamura Chubu University
Hiroshi Naraoka
Hiroshi Naraoka Kyushu University
Kunio Kaiho
Kunio Kaiho Tohoku University
Hideshige Takada
Hideshige Takada Tokyo University of Agriculture and Technology
Takashi Tatsumi
Takashi Tatsumi Tokyo Institute of Technology
Hodaka Kawahata
Hodaka Kawahata University of Tokyo
Philip A. Meyers
Philip A. Meyers University of Michigan–Ann Arbor
J.W. de Leeuw
J.W. de Leeuw Delft University of Technology
Bernd R.T. Simoneit
Bernd R.T. Simoneit Oregon State University
Naohiko Ohkouchi
Naohiko Ohkouchi Japan Agency for Marine-Earth Science and Technology

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