World's Best Scientists 2026 revealed!

Akira Usui 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 Akira Usui 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.

Akira Usui 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 Akira Usui 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.

Best Publications

  • Discriminating between different genetic types of marine ferro-manganese crusts and nodules based on rare earth elements and yttrium

    M. Bau;K. Schmidt;A. Koschinsky;J. Hein

  • Chemical and structural control of the partitioning of Co, Ce, and Pb in marine ferromanganese oxides

    Yoshio Takahashi;Alain Manceau;Nicolas Geoffroy;Matthew A. Marcus

  • Direct observation of tetravalent cerium in ferromanganese nodules and crusts by X-ray-absorption near-edge structure (XANES)

    Yoshio Takahashi;Hiroshi Shimizu;Akira Usui;Hiroyuki Kagi

  • Distribution and composition of marine hydrogenetic and hydrothermal manganese deposits in the northwest Pacific

    Unknown

  • Molecular-scale mechanisms of distribution and isotopic fractionation of molybdenum between seawater and ferromanganese oxides

    Teruhiko Kashiwabara;Yoshio Takahashi;Masaharu Tanimizu;Akira Usui

  • Nanoscale InP Islands for Quantum Box Structures by Hydride Vapor Phase Epitaxy

    Jouni Ahopelto;A. Atsushi Yamaguchi;Kenichi Nishi;Akira Usui

  • Tungsten species in natural ferromanganese oxides related to its different behavior from molybdenum in oxic ocean

    Teruhiko Kashiwabara;Teruhiko Kashiwabara;Yoshio Takahashi;Matthew A. Marcus;Tomoya Uruga

  • Structural stability of marine 10 Å manganates from the Ogasawara (Bonin) Arc: Implication for low-temperature hydrothermal activity

    Unknown

  • Continuous growth of hydrogenetic ferromanganese crusts since 17 Myr ago on Takuyo-Daigo Seamount, NW Pacific, at water depths of 800-5500 m

    Akira Usui;Keisuke Nishi;Hisaaki Sato;Yoshio Nakasato

  • Geochemistry of low-temperature water–rock interaction: evidence from natural waters, andesite, and iron-oxyhydroxide precipitates at Nishiki-numa iron-spring, Hokkaido, Japan

    Michael Bau;Akira Usui;Bernhard Pracejus;Naoki Mita

  • Submarine hydrothermal manganese deposits from the Ogasawara (Bonin) Arc, off the Japan Islands

    Unknown

  • Uranium isotope systematics of ferromanganese crusts in the Pacific Ocean: Implications for the marine 238U/235U isotope system

    Kosuke T. Goto;Ariel D. Anbar;Gwyneth W. Gordon;Stephen J. Romaniello

  • Evidence for hydrothermal venting in Fe isotope compositions of the deep Pacific Ocean through time

    N.-C. Chu;C. M. Johnson;B. L. Beard;C. R. German

  • Geochemistry and Mineralogy of a Modern Buserite Deposit from a Hot Spring in Hokkaido, Japan

    Unknown

  • OXYGEN ISOTOPE ANALYSES OF CHEMICALLY AND MICROBIALLY PRODUCED MANGANESE OXIDES AND MANGANATES

    Kevin W. Mandernack;Kevin W. Mandernack;Marilyn L. Fogel;Bradley M. Tebo;Akira Usui

  • Ultrafine-scale magnetostratigraphy of marine ferromanganese crust

    Hirokuni Oda;Akira Usui;Isoji Miyagi;Masato Joshima

  • Submersible observations of hydrothermal manganese deposits on the Kaikata Seamount, Izu-Ogasawara (Bonin) Arc

    Unknown

  • Manganese microchimneys buried in the Central Pacific pelagic sediments: evidence of intraplate water circulation?

    Akira Usui;Michael Bau;Yamazaki Toshitsugu

  • Submarine Hydrothermal Mineralization on the Izu–Bonin Arc, South of Japan: An Overview

    Unknown

  • Nickel and copper accumplation as essential elements in 10-Å manganite of deep-sea manganese nodules

    Unknown

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