World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
43
Citations
14898
World Ranking
4837
National Ranking
226

Ian D. Clark 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 Ian D. Clark 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: 195 publications — 58th percentile

58% of scientists in this discipline score the same or lower.

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

Ian D. Clark 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 Ian D. Clark 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: 43 D-Index — 37th percentile

37% of scientists in this discipline score the same or lower.

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

Overview

Ian D. Clark is affiliated with the University of Ottawa in Canada. Their research primarily spans the fields of Environmental Science and Earth and Planetary Sciences, with notable contributions in subfields including Geochemistry and Petrology, Atmospheric Science, Ecology, Environmental Engineering, and Environmental Chemistry.

The scientist's work covers several key topics related to geology and environmental processes. These topics include Geology and Paleoclimatology Research, Groundwater and Isotope Geochemistry, Atmospheric and Environmental Gas Dynamics, Hydrocarbon Exploration and Reservoir Analysis, Methane Hydrates and Related Phenomena, Geological and Geochemical Analysis, and Polar Research and Ecology.

Several recent papers showcase the range of Ian D. Clark's research activity. Among these publications are:

  • "CH4 isotopic ordering records ultra-slow hydrocarbon biodegradation in the deep subsurface" (2021, Earth and Planetary Science Letters)
  • "Diagenetic evolution of a sedimentary system (Michigan Basin): Insights from petrography and S-isotope micro-analysis of pyrite" (2020, Chemical Geology)
  • "Sources of solutes and carbon cycling in perennially ice-covered Lake Untersee, Antarctica" (2020, Scientific Reports)
  • "Glacial lake outburst floods enhance benthic microbial productivity in perennially ice-covered Lake Untersee (East Antarctica)" (2021, Communications Earth & Environment)
  • "Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran)" (2022, Journal of Geochemical Exploration)

Frequent collaborators include Josué J. Jautzy, Laura Kennell-Morrison, Tom A. Al, Nicole B. Marsh, and Denis Lacelle. These coauthors have contributed to multiple studies alongside Clark, reflecting interdisciplinary engagement across related research topics.

Ian D. Clark's work has been published in a variety of venues, with repeated appearances in Goldschmidt Abstracts, Earth and Planetary Science Letters, Chemical Geology, Scientific Reports, and Communications Earth & Environment. Such diverse publication outlets indicate the breadth of their research interests and expertise.

Best Publications

  • Environmental Isotopes in Hydrogeology

    Ian D. Clark;Peter Fritz

  • Groundwater Geochemistry and Isotopes

    Ian D. Clark

  • Thawing of massive ground ice in mega slumps drives increases in stream sediment and solute flux across a range of watershed scales

    S. V. Kokelj;D. Lacelle;T. C. Lantz;J. Tunnicliffe

  • The origin and evolution of Canadian Shield brines: evaporation or freezing of seawater? New lithium isotope and geochemical evidence from the Slave craton

    D.J. Bottomley;A. Katz;L.H. Chan;A. Starinsky

  • Paleoclimatic Reconstruction in Northern Oman Based on Carbonates from Hyperalkaline Groundwaters

    Ian D. Clark;Jean-Charles Fontes

  • Kinetic enrichment of stable isotopes in cryogenic calcites

    Ian D. Clark;Bernard Lauriol

  • WATER - ROCK INTERACTION

    Ian D. Clark;Peter Fritz

  • Stable isotope disequilibria in travertine from high pH waters: Laboratory investigations and field observations from Oman

    Ian D. Clark;Jean-Charles Fontes;Peter Fritz

  • First Status Report on Radiocarbon Sample Preparation Techniques at the A.E. Lalonde AMS Laboratory (Ottawa, Canada)

    Carley A Crann;Sarah Murseli;Gilles St-Jean;Xiaolei Zhao

  • Prevalence of anaerobic ammonium-oxidizing bacteria in contaminated groundwater.

    Tara A. Moore;Yangping Xing;Brent Lazenby;Michael D. J. Lynch

  • Impacts of hillslope thaw slumps on the geochemistry of permafrost catchments (Stony Creek watershed, NWT, Canada)

    Laura Malone;Denis Lacelle;Steve Kokelj;Ian D. Clark

  • Aufeis of the Firth River Basin, Northern Yukon, Canada: insights into permafrost hydrogeology and Karst

    Ian D. Clark;Bernard Lauriol

  • Basal ice facies and supraglacial melt-out till of the Laurentide Ice Sheet, Tuktoyaktuk Coastlands, western Arctic Canada

    J.B. Murton;C.A. Whiteman;R.I. Waller;W.H. Pollard

  • Sorption of strontium onto bacteriogenic iron oxides.

    Sean Langley;Andrew G. Gault;Alexandre Ibrahim;Yoshio Takahashi

  • Groundwater mixing dynamics at a Canadian Shield mine

    M. Douglas;I.D. Clark;K. Raven;D. Bottomley

  • The artesian thermal groundwaters of northern Jordan: insights into their recharge history and age

    William Baijjali;Ian D. Clark;Peter Fritz

  • Scars In The Landscape: A Register Of Massacre Sites In Western Victoria, 1803 1859

    Ian D. Clark

  • A natural analogue of high pH cement pore waters from the Maqarin area of northern Jordan. I: introduction to the site

    H.N. Khoury;E. Salameh;I.D. Clark;P. Fritz

  • Indigenous and Minority Placenames: Australian and International Perspectives

    Ian D Clark;Luise Hercus;Laura Kostanski

  • Microbial and geochemical features suggest iron redox cycling within bacteriogenic iron oxide-rich sediments

    Andrew G. Gault;Alexandre Ibrahim;Sean Langley;Robert Renaud

  • Recharge and Preservation of Laurentide Glacial Melt Water in the Canadian Shield

    Ian D. Clark;Malcolm Douglas;Kenneth Raven;Dennis Bottomley

Frequent Co-Authors

Denis Lacelle
Denis Lacelle University of Ottawa
Peter Fritz
Peter Fritz University of Waterloo
Danielle Fortin
Danielle Fortin University of Ottawa
David A. Fisher
David A. Fisher University of Ottawa
David R. Lapen
David R. Lapen Government of Canada
Yoshio Takahashi
Yoshio Takahashi University of Tokyo
Josh D. Neufeld
Josh D. Neufeld University of Waterloo
Grant D. Zazula
Grant D. Zazula Simon Fraser University
Wayne H. Pollard
Wayne H. Pollard McGill University
R. Timothy Patterson
R. Timothy Patterson Carleton University

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