World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
84
Citations
28498
World Ranking
390
National Ranking
204

Chemistry

D-Index
77
Citations
25410
World Ranking
3957
National Ranking
1258

Isaac R. Kaplan 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 Isaac R. Kaplan 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: 246 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

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

Isaac R. Kaplan 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 Isaac R. Kaplan 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: 84 D-Index — 96th percentile

96% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 1986 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1970 - Fellow of John Simon Guggenheim Memorial Foundation

Overview

Isaac R. Kaplan is affiliated with the University of California, Los Angeles in the United States. Their research has contributed to the intersection of public health and environmental studies, with a focus on zoonotic diseases and public health issues.

Kaplan has published papers in several scientific venues. Notable recent publications include:

  • Working Group on Multispecies Assessment Methods (WGSAM) 2021, 2021, Archimer (Ifremer)
  • Perfumes and Spices, 2024, Encyclopedia of the Bible Online

The scientist has collaborated frequently with other researchers in their field. Key frequent co-authors include:

  • Michael R. Spence (2 collaborations)
  • Valerio Bartolino (1 collaboration)
  • Sarah Gaichas (1 collaboration)
  • Alan Baudron (1 collaboration)
  • Vanessa Trijoulet (1 collaboration)

Kaplan's work has been published primarily in the following venues:

  • Archimer (Ifremer)
  • Encyclopedia of the Bible Online

Their main research subfield is Public Health, Environmental and Occupational Health.

The primary topics reflected in Kaplan's research are:

  • Zoonotic diseases and public health

Isaac R. Kaplan has received recognition from scientific communities, including these awards:

  • Fellow of the American Association for the Advancement of Science (AAAS) in 1986
  • Fellow of John Simon Guggenheim Memorial Foundation in 1970

Best Publications

  • The age curves of sulfur and oxygen isotopes in marine sulfate and their mutual interpretation

    George E. Claypool;William T. Holser;Isaac R. Kaplan;Hitoshi Sakai

  • The Origin and Distribution of Methane in Marine Sediments

    George E. Claypool;I. R. Kaplan

  • Evidence for extraterrestrial amino-acids and hydrocarbons in the Murchison meteorite.

    Keith Kvenvolden;James Lawless;Katherine Pering;Etta Peterson

  • Motor exhaust emissions as a primary source for dicarboxylic acids in Los Angeles ambient air

    Kimitaka. Kawamura;Isaac R. Kaplan

  • Isotope geochemistry of sedimentary sulfates

    W.T. Holser;W.T. Holser;I.R. Kaplan;I.R. Kaplan

  • Correlation of carbon and nitrogen stable isotope ratios in sedimentary organic matter 1

    K. E. Peters;R. E. Sweeney;I. R. Kaplan

  • Isotopic fractionation of dissolved nitrate during denitrification in the eastern tropical north pacific ocean

    J.D. Cline;I.R. Kaplan

  • Stable isotopes in sedimentary Geology

    Michael A. Arthur;Thomas F. Anderson;Isaac R. Kaplan;Jan Veizer

  • CHEMICAL AND ISOTOPIC EVIDENCE FOR THE IN SITU ORIGIN OF MARINE HUMIC SUBSTANCES

    Arie Nissenbaum;I. R. Kaplan

  • The distribution and isotopic abundance of sulphur in recent marine sediments off southern California

    Unknown

  • The eastern tropical Pacific as a source of 15N-enriched nitrate in seawater off southern California

    Kon‐Kee Liu;Isaac R. Kaplan

  • Insights into oil cracking based on laboratory experiments

    Ronald J. Hill;Yongchun Tang;Isaac R. Kaplan

  • Natural Gases in Marine Sediments

    Isaac R. Kaplan

  • APDC-MIBK extraction system for the determination of trace elements in saline waters by atomic-absorption spectrophotometry.

    Robert R. Brooks;Bob J. Presley;Isaac R. Kaplan

  • Determination of organic acids (C1-C10) in the atmosphere, motor exhausts, and engine oils

    Kimitaka. Kawamura;Lai Ling. Ng;Isaac R. Kaplan

  • CONTROLS AND CONSEQUENCES OF SULFATE REDUCTION RATES IN RECENT MARINE SEDIMENTS

    M.B. Goldhaber;I.R. Kaplan

  • Stable isotope geochemistry : a tribute to Samuel Epstein

    Hugh P. Taylor;James R. O'Neil;Isaac R. Kaplan

  • Mechanisms of sulfur incorporation and isotope fractionation during early diagenesis in sediments of the gulf of California

    M.B. Goldhaber;I.R. Kaplan

  • Comparison of Kjeldahl and combustion methods for measurement of nitrogen isotope ratios in organic matter

    Masao. Minagawa;David A. Winter;Isaac R. Kaplan

  • Early diagenesis in a reducing fjord, Saanich Inlet, British Columbia—I. chemical and isotopic changes in major components of interstitial water

    Arie Nissenbaum;B.J Presley;I.R Kaplan

  • Forensic Environmental Geochemistry: differentiation of fuel-types, their sources and release time

    Isaac R. Kaplan;Yakov Galperin;Shan-Tan Lu;Ru-Po Lee

Frequent Co-Authors

Kimitaka Kawamura
Kimitaka Kawamura Chubu University
Kenneth E. Peters
Kenneth E. Peters Stanford University
Hiroshi Sakugawa
Hiroshi Sakugawa Hiroshima University
Bob J. Presley
Bob J. Presley Texas A&M University
Bernd R.T. Simoneit
Bernd R.T. Simoneit Oregon State University
Sam Ben-Yaakov
Sam Ben-Yaakov Ben-Gurion University of the Negev
Elso S. Barghoorn
Elso S. Barghoorn Harvard University
Yongchun Tang
Yongchun Tang California Institute of Technology
Harlyn O. Halvorson
Harlyn O. Halvorson Brandeis University
Lynn Margulis
Lynn Margulis University of Massachusetts Amherst

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Related Online Degrees & Career Pathways

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Online education is also becoming more accessible for diverse learners, including older adults. Many universities offer online degrees for seniors, encouraging lifelong learning and career shifts later in life within Earth Science or related disciplines.

Additionally, for those interested in information management within scientific contexts, accredited programs like the ALA MLIS programs provide specialized training in library and information sciences, which are vital for managing research data and environmental archives.

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