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Tõnu Martma 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 Tõnu Martma 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+

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

Tõnu Martma 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 Tõnu Martma 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+

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

Overview

Tõnu Martma is affiliated with Tallinn University of Technology in Estonia. Their research predominantly lies within the field of Earth and Planetary Sciences, with a strong focus on various subfields including Atmospheric Science, Paleontology, Geochemistry and Petrology, Environmental Chemistry, and Mechanics of Materials.

The scientist's work covers several main topics that span paleontological and geological research and climate-related studies. These topics include:

  • Paleontology and Stratigraphy of Fossils
  • Geology and Paleoclimatology Research
  • Cryospheric Studies and Observations
  • Geochemistry and Elemental Analysis
  • Climate Change and Permafrost
  • Methane Hydrates and Related Phenomena
  • Atmospheric Chemistry and Aerosols

Tõnu Martma has contributed extensively to scientific literature, with recent publications addressing diverse geological and environmental issues. Notable papers include:

  • Marine redox variability from Baltica during extinction events in the latest Ordovician-early Silurian, 2020, published in Palaeogeography Palaeoclimatology Palaeoecology
  • Controls on the 14C Content of Dissolved and Particulate Organic Carbon Mobilized Across the Mackenzie River Basin, Canada, 2020, published in Global Biogeochemical Cycles
  • Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015-2016 snow accumulation season, 2021, published in Atmospheric Chemistry and Physics
  • Oxygenated conditions in the aftermath of the Lomagundi-Jatuli Event: The carbon isotope and rare earth element signatures of the Paleoproterozoic Zaonega Formation, Russia, 2020, published in Precambrian Research
  • A multi-proxy approach to constrain reducing conditions in the Baltic Basin during the late Silurian Lau carbon isotope excursion, 2021, published in Palaeogeography Palaeoclimatology Palaeoecology

Frequent collaborators in Tõnu Martma's research include:

  • Seth A. Young
  • Olle Hints
  • Jeremy D. Owens
  • Aivo Lepland
  • Christian Zdanowicz

The scholar's research has appeared repeatedly in several prominent scientific venues, illustrating a consistent engagement with the scientific community. Key publication outlets include:

  • Abstracts with Programs - Geological Society of America
  • Proceedings of the Estonian Academy of Sciences Geology
  • Palaeogeography Palaeoclimatology Palaeoecology
  • Atmospheric Chemistry and Physics
  • Global Biogeochemical Cycles

Best Publications

  • High-resolution stable isotope stratigraphy of Upper Ordovician sequences: Constraints on the timing of bioevents and environmental changes associated with mass extinction and glaciation

    P.J. Brenchley;G.A. Carden;L. Hints;D. Kaljo

  • Middle and Upper Ordovician carbon isotope chemostratigraphy in Baltoscandia: A correlation standard and clues to environmental history

    L. Ainsaar;D. Kaljo;T. Martma;T. Meidla

  • Carbon isotope event markers through the Wenlock–Pridoli sequence at Ohesaare (Estonia) and Priekule (Latvia)

    D Kaljo;T Kiipli;T Martma

  • Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet

    Antoine Crémière;Aivo Lepland;Shyam Chand;Diana Sahy

  • Post-Hunnebergian Ordovician carbon isotope trend in Baltoscandia, its environmental implications and some similarities with that of Nevada

    Dimitri Kaljo;Tõnu Martma;Tõnis Saadre

  • Late Ordovician carbon isotope trend in Estonia, its significance in stratigraphy and environmental analysis

    Dimitri Kaljo;Linda Hints;Tõnu Martma;Jaak Nõlvak

  • Implications of Gondwana glaciations in the Baltic late Ordovician and Silurian and a carbon isotopic test of environmental cyclicity

    Dimitri Kaljo;Tõnu Martma;Peep Männik;Viive Viira

  • Effect of periodic melting on geochemical and isotopic signals in an ice core from Lomonosovfonna, Svalbard

    V. A. Pohjola;J. C. Moore;E. Isaksson;T. Jauhiainen

  • Isotopic measurements of precipitation on central Asian glaciers (Southeastern Tibet, northern Himalayas, central Tien Shan)

    Vladimir Aizen;Elena Aizen;John Melack;Tonu Martma

  • Thousand years of winter surface air temperature variations in Svalbard and northern Norway reconstructed from ice-core data

    Dmitri Divine;Elisabeth Isaksson;Tonu Martma;Harro A. J Meijer

  • Snow contribution to first-year and second-year Arctic sea ice mass balance north of Svalbard

    Mats A. Granskog;Anja Rösel;Paul A. Dodd;Dmitry Divine

  • EVIDENCE FOR A WIDESPREAD CARBON ISOTOPIC EVENT ASSOCIATED WITH LATE MIDDLE ORDOVICIAN SEDIMENTOLOGICAL AND FAUNAL CHANGES IN ESTONIA

    Leho Ainsaar;Tonu Meidla;Tonu Martma

  • Testing the limits of Paleozoic chronostratigraphic correlation via high-resolution (<500 k.y.) integrated conodont, graptolite, and carbon isotope (δ13Ccarb) biochemostratigraphy across the Llandovery–Wenlock (Silurian) boundary: Is a unified Phanerozoic time scale achievable?

    Bradley D. Cramer;David K. Loydell;Christian Samtleben;Axel Munnecke

  • The Middle Caradoc Facies and Faunal Turnover in the Late Ordovician Baltoscandian palaeobasin

    Leho Ainsaar;Tõnu Meidla;Tõnu Martma

  • Contributions of autochthonous and allochthonous sources to dissolved organic matter in a large, shallow, eutrophic lake with a highly calcareous catchment

    Kaire Toming;Kaire Toming;Lea Tuvikene;Sirje Vilbaste;Helen Agasild

  • Effect of glacial drainage water on the CO2 system and ocean acidification state in an Arctic tidewater-glacier fjord during two contrasting years

    Agneta Fransson;Melissa Chierici;Daiki Nomura;Daiki Nomura;Mats A. Granskog

  • Carbon isotope stratigraphy in the latest Ordovician of Estonia

    D Kaljo;L Hints;T Martma;J Nõlvak

  • Fluid source and methane-related diagenetic processes recorded in cold seep carbonates from the Alvheim channel, central North Sea

    Antoine Crémière;Aivo Lepland;Shyam Chand;Diana Sahy

  • A new ice-core record from Lomonosovfonna, Svalbard: viewing the 1920-97 data in relation to present climate and environmental conditions

    Elisabeth Isaksson;Veijo Pohjola;Tauno Jauhiainen;John Moore

  • Unprecedented low twentieth century winter sea ice extent in the Western Nordic Seas since A.D. 1200

    M. Macias Fauria;A. Grinsted;A. Grinsted;S. Helama;J. Moore;J. Moore;J. Moore

  • Three global carbon isotope shifts in the Silurian of Podolia (Ukraine): stratigraphical implications

    Dimitri Kaljo;Volodymyr Grytsenko;Tõnu Martma;Mari-Ann Mõtus

  • A 160,000-year-old history of tectonically controlled methane seepage in the Arctic.

    Tobias Himmler;Diana Sahy;Tõnu Martma;Gerhard Bohrmann

Frequent Co-Authors

Elisabeth Isaksson
Elisabeth Isaksson Norwegian Polar Institute
Veijo A. Pohjola
Veijo A. Pohjola Uppsala University
John C. Moore
John C. Moore Beijing Normal University
Dmitry Divine
Dmitry Divine Norwegian Polar Institute
Harro A. J. Meijer
Harro A. J. Meijer University of Groningen
Jack Kohler
Jack Kohler Norwegian Polar Institute
R. S. W. van de Wal
R. S. W. van de Wal Utrecht University
Mats A. Granskog
Mats A. Granskog Norwegian Polar Institute
Jeremy D. Owens
Jeremy D. Owens Florida State University
Margit Schwikowski
Margit Schwikowski Paul Scherrer Institute

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