World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
44
Citations
6894
World Ranking
4740
National Ranking
122

Takayuki Ushikubo 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 Takayuki Ushikubo sits on this spectrum.

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 publications 603+

This scientist: 212 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

Takayuki Ushikubo 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 Takayuki Ushikubo sits on this spectrum.

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: 44 D-Index — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

Overview

Takayuki Ushikubo is affiliated with the Japan Agency for Marine-Earth Science and Technology in Japan. Their research primarily spans Earth and Planetary Sciences, Physics and Astronomy, and Environmental Science. This multidisciplinary focus is reflected in the extensive number of publications contributed to these fields.

The scientist's research engages deeply with subfields such as Geophysics, Astronomy and Astrophysics, Ecology, Atmospheric Science, and Global and Planetary Change. Research topics predominantly include Geological and Geochemical Analysis, Astro and Planetary Science, High-pressure Geophysics and Materials, Earthquake and Tectonic Studies, Isotope Analysis in Ecology, Planetary Science and Exploration, and Geology and Paleoclimatology Research.

Their publication record features articles in various scientific venues, most frequently in Geochimica et Cosmochimica Acta, where seven publications appear. Additional notable venues include Goldschmidt Abstracts, Geology, Chemical Geology, and the Journal of Petrology.

Frequently collaborating with several researchers, Takayuki Ushikubo has coauthored multiple works with Kenji Shimizu, N. T. Kita, Makoto Kimura, Takeshi Kuritani, and Tatsuo Nozaki.

Some recent publications include:

  • Oxygen-isotope systematics of chondrules and olivine fragments from Tagish Lake C2 chondrite: Implications of chondrule-forming regions in protoplanetary disk, 2020, Geochimica et Cosmochimica Acta
  • Microbial sulfate reduction plays an important role at the initial stage of subseafloor sulfide mineralization, 2020, Geology
  • Reconstruction of temperature experienced by Pacific bluefin tuna Thunnus orientalis larvae using SIMS and microvolume CF-IRMS otolith oxygen isotope analyses, 2020, Marine Ecology Progress Series
  • A temporal shift of chondrule generation from the inner to outer Solar System inferred from oxygen isotopes and Al-Mg chronology of chondrules from primitive CM and CO chondrites, 2021, Geochimica et Cosmochimica Acta
  • Persistent gas emission originating from a deep basaltic magma reservoir of an active volcano: the case of Aso volcano, Japan, 2021, Contributions to Mineralogy and Petrology

Best Publications

  • High precision SIMS oxygen isotope analysis and the effect of sample topography

    Noriko T. Kita;Takayuki Ushikubo;Bin Fu;John W. Valley

  • Hadean age for a post-magma-ocean zircon confirmed by atom-probe tomography

    John W. Valley;Aaron J. Cavosie;Aaron J. Cavosie;Takayuki Ushikubo;David A. Reinhard

  • Chondrulelike Objects in Short-Period Comet 81P/Wild 2

    Tomoki Nakamura;Takaaki Noguchi;Akira Tsuchiyama;Takayuki Ushikubo

  • Primordial oxygen isotope reservoirs of the solar nebula recorded in chondrules in Acfer 094 carbonaceous chondrite

    Takayuki Ushikubo;Makoto Kimura;Noriko T. Kita;John W. Valley

  • Lithium in Jack Hills zircons: Evidence for extensive weathering of Earth's earliest crust

    Takayuki Ushikubo;Noriko T. Kita;Aaron J. Cavosie;Simon A. Wilde

  • 26Al-26Mg isotope systematics of the first solids in the early solar system

    Noriko T. Kita;Qing-Zhu Yin;Glenn J. MacPherson;Takayuki Ushikubo

  • Intratest oxygen isotope variability in the planktonic foraminifer N. pachyderma: Real vs. apparent vital effects by ion microprobe

    R. Kozdon;T. Ushikubo;N.T. Kita;M. Spicuzza

  • Oxygen isotope ratios of FeO-poor chondrules in CR3 chondrites: Influence of dust enrichment and H2O during chondrule formation

    Travis J. Tenner;Daisuke Nakashima;Takayuki Ushikubo;Noriko T. Kita

  • Perspectives on the origin of plagiogranite in ophiolites from oxygen isotopes in zircon

    Craig B. Grimes;Takayuki Ushikubo;Reinhard Kozdon;John W. Valley

  • Evolution of protoplanetary disk inferred from 26 Al chronology of individual chondrules

    Noriko T. Kita;Takayuki Ushikubo

  • Uniformly mantle-like δ18O in zircons from oceanic plagiogranites and gabbros

    Craig B. Grimes;Craig B. Grimes;Takayuki Ushikubo;Barbara E. John;John W. Valley

  • Well-resolved variations in the formation ages for Ca-Al-rich inclusions in the early Solar System

    G.J. MacPherson;N.T. Kita;T. Ushikubo;E.S. Bullock

  • High-precision oxygen isotope analysis of picogram samples reveals 2 μm gradients and slow diffusion in zircon

    F. Zeb Page;T. Ushikubo;Noriko T. Kita;L. R. Riciputi

  • Constraining atmospheric oxygen and seawater sulfate concentrations during Paleoproterozoic glaciation: In situ sulfur three-isotope microanalysis of pyrite from the Turee Creek Group, Western Australia

    Kenneth H. Williford;Martin J. Van Kranendonk;Martin J. Van Kranendonk;Takayuki Ushikubo;Reinhard Kozdon

  • Nano- and micro-geochronology in Hadean and Archean zircons by atom-probe tomography and SIMS: New tools for old minerals

    John W. Valley;David A. Reinhard;Aaron J. Cavosie;Aaron J. Cavosie;Takayuki Ushikubo

  • Seasonal resolution of Eastern Mediterranean climate change since 34 ka from a Soreq Cave speleothem

    Ian J. Orland;Miryam Bar-Matthews;Avner Ayalon;Alan Matthews

  • Li isotopes and trace elements as a petrogenetic tracer in zircon: insights from Archean TTGs and sanukitoids

    Anne-Sophie Bouvier;Anne-Sophie Bouvier;Takayuki Ushikubo;Noriko T. Kita;Aaron J. Cavosie

  • Oxygen isotope systematics of chondrule phenocrysts from the CO3.0 chondrite Yamato 81020: Evidence for two distinct oxygen isotope reservoirs

    Travis J. Tenner;Takayuki Ushikubo;Erika Kurahashi;Noriko T. Kita

  • SIMS analyses of silicon and oxygen isotope ratios for quartz from Archean and Paleoproterozoic banded iron formations

    Philipp R. Heck;Philipp R. Heck;Jason M. Huberty;Noriko T. Kita;Takayuki Ushikubo

  • Texture-specific isotopic compositions in 3.4 Gyr old organic matter support selective preservation in cell-like structures

    Kevin Lepot;Kevin Lepot;Kenneth H. Williford;Kenneth H. Williford;Takayuki Ushikubo;Kenichiro Sugitani

  • Lithium inJackHills zircons: Evidence forextensiveweatheringof Earth's earliest crust

    Takayuki Ushikubo;Noriko T. Kita;Aaron J. Cavosie;Simon A. Wilde

Frequent Co-Authors

Noriko T. Kita
Noriko T. Kita University of Wisconsin–Madison
John W. Valley
John W. Valley University of Wisconsin–Madison
Hikaru Iwamori
Hikaru Iwamori University of Tokyo
Reinhard Kozdon
Reinhard Kozdon Columbia University
Michael J. Spicuzza
Michael J. Spicuzza University of Wisconsin–Madison
Michael K. Weisberg
Michael K. Weisberg City University of New York
Kenneth H. Williford
Kenneth H. Williford Blue Marble Space Institute of Science
Aaron J. Cavosie
Aaron J. Cavosie Curtin University
Jun-Ichi Kimura
Jun-Ichi Kimura Japan Agency for Marine-Earth Science and Technology
Glenn J. MacPherson
Glenn J. MacPherson National Museum of Natural History

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