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George Helffrich 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 George Helffrich 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.

George Helffrich 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 George Helffrich 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.

Research.com Recognitions

  • 2017 - Fellow of American Geophysical Union (AGU)

Overview

George Helffrich is affiliated with the Tokyo Institute of Technology in Japan and conducts research primarily in Earth and Planetary Sciences as well as Engineering. Their work spans several interconnected subfields including Geophysics, Mechanics of Materials, Mechanical Engineering, Ocean Engineering, and Astronomy and Astrophysics.

Their research covers a range of topics such as Geological and Geochemical Analysis, High-pressure Geophysics and Materials, Reservoir Engineering and Simulation Methods, Laser-induced Spectroscopy and Plasma, Metallurgical Processes and Thermodynamics, Geological Modeling and Analysis, and Earthquake and Tectonic Studies.

Helffrich has contributed to multiple publications with notable recent papers including:

  • Thermodynamical Modeling of Liquid Fe-Si-Mg-O: Molten Magnesium Silicate Release From the Core (2020), published in Geophysical Research Letters
  • Short note about detection of a deep Mars mantle seismic discontinuity (2022), published in Zenodo (CERN European Organization for Nuclear Research)

Their frequent co-authors include Kei Hirose, Amir Khan, Domenico Giardini, Johannes Kemper, and Ryuichi Nomura, indicating active collaborations in related research areas.

Key venues of publication for Helffrich are diverse but include multiple contributions to Zenodo (CERN European Organization for Nuclear Research), as well as publications in Geophysical Research Letters, Journal of Geophysical Research Solid Earth, Geophysical Journal International, and Goldschmidt Abstracts.

Helffrich's recognition in the scientific community is marked by receiving the distinction of Fellow of the American Geophysical Union (AGU) in 2017.

Best Publications

  • Phase transition Clapeyron slopes and transition zone seismic discontinuity topography

    Craig R. Bina;George Helffrich

  • The Earth's mantle

    George R. Helffrich;George R. Helffrich;Bernard J. Wood

  • Topography of the transition zone seismic discontinuities

    George Helffrich

  • Crystallization of silicon dioxide and compositional evolution of the Earth’s core

    Kei Hirose;Guillaume Morard;Ryosuke Sinmyo;Koichio Umemoto

  • Outer-core compositional stratification from observed core wave speed profiles

    George Helffrich;Satoshi Kaneshima

  • Extended-Time Multitaper Frequency Domain Cross-Correlation Receiver-Function Estimation

    George Helffrich

  • Dipping low-velocity layer in the mid-lower mantle: evidence for geochemical heterogeneity

    Satoshi Kaneshima;George Helffrich

  • Emergence and evolution of Santa Maria Island (Azores)—The conundrum of uplifted islands revisited

    Ricardo Dos Santos Ramalho;Ricardo Dos Santos Ramalho;George Helffrich;José Madeira;Michael Cosca

  • Subduction zone thermal structure and mineralogy and their relationship to seismic wave reflections and conversions at the slab/mantle interface

    George R. Helffrich;Seth Stein;Bernard J. Wood

  • Topography of the “410” and “660” km seismic discontinuities in the Izu-Bonin Subduction Zone

    Jonathan D. Collier;George R. Helffrich

  • Precambrian crustal evolution: seismic constraints from the Canadian Shield

    D.A Thompson;ID Bastow;GR Helffrich;J-M Kendall

  • How good are routinely determined focal mechanisms? Empirical statistics based on a comparison of Harvard, USGS and ERI moment tensors

    George R. Helffrich

  • Seismological constraints on core composition from Fe-O-S liquid immiscibility.

    George Helffrich;Satoshi Kaneshima

  • Detection of lower mantle scatterers northeast of the Marianna subduction zone using short-period array data

    Satoshi Kaneshima;George Helffrich

  • Hazard potential of volcanic flank collapses raised by new megatsunami evidence

    Ricardo Dos Santos Ramalho;Ricardo Dos Santos Ramalho;Gisela Winckler;José Madeira;George Helffrich;George Helffrich

  • CALCULATION OF ELASTIC PROPERTIES FROM THERMODYNAMIC EQUATION OF STATE PRINCIPLES

    Craig R. Bina;George R. Helffrich

  • Tracers of Uplift and Subsidence in the Cape Verde Archipelago

    Ricardo S. Ramalho;GR Helffrich;Daniela N Schmidt;D Vance

  • Depleted swell root beneath the Cape Verde Islands

    Alexandra Lodge;George Helffrich

  • 410 km discontinuity sharpness and the form of the olivine α-β phase diagram: resolution of apparent seismic contradictions

    George R. Helffrich;Bernard J. Wood

  • Seismic discontinuities and subduction zones

    Jonathan D. Collier;George R. Helffrich;Bernard J. Wood

  • The Seismic Analysis Code: A Primer and User's Guide

    George Helffrich;James Wookey;Ian Bastow

  • The Seismic Analysis Code by George Helffrich

    Unknown

Frequent Co-Authors

Ian D. Bastow
Ian D. Bastow Imperial College London
James Wookey
James Wookey University of Bristol
Kei Hirose
Kei Hirose University of Tokyo
J-M Kendall
J-M Kendall University of Oxford
Christine Thomas
Christine Thomas University of Münster
David W. Eaton
David W. Eaton University of Calgary
José Madeira
José Madeira University of Lisbon
Graham Stuart
Graham Stuart University of Leeds
James O.S. Hammond
James O.S. Hammond Birkbeck, University of London
Derek Vance
Derek Vance ETH Zurich

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