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D-Index & Metrics

Earth Science

D-Index
47
Citations
15328
World Ranking
3923
National Ranking
1531

Charles J. Ammon 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 Charles J. Ammon 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: 169 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

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

Charles J. Ammon 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 Charles J. Ammon 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: 47 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2015 - Fellow of American Geophysical Union (AGU)

Overview

Charles J. Ammon is affiliated with Pennsylvania State University in the United States. Their research primarily spans the fields of Earth and Planetary Sciences, Computer Science, and Engineering. Within these broader disciplines, their work focuses on subfields such as Geophysics, Artificial Intelligence, Ocean Engineering, and Oceanography.

The scientist's main research topics include:

  • Earthquake and tectonic studies
  • Seismic Waves and Analysis
  • High-pressure geophysics and materials
  • Seismology and Earthquake Studies
  • Geophysics and Sensor Technology
  • Seismic Imaging and Inversion Techniques
  • Earthquake Detection and Analysis

Frequent co-authors collaborating with Charles J. Ammon are:

  • A. A. Velasco
  • Thorne Lay
  • Terry C. Wallace
  • A. Nyblade
  • Jonas A. Kintner

Their research is published predominantly in the following venues:

  • Bulletin of the Seismological Society of America
  • Seismological Research Letters
  • Reviews of Geophysics
  • Geochemistry Geophysics Geosystems
  • Geophysical Prospecting

Some recent papers by Charles J. Ammon include:

  • "Achievements and Prospects of Global Broadband Seismographic Networks After 30 Years of Continuous Geophysical Observations," 2022, Reviews of Geophysics
  • "Testing a Local-Distance Rg/Sg Discriminant Using Observations from the Bighorn Region, Wyoming," 2020, Bulletin of the Seismological Society of America
  • "Crust and Upper Mantle Structure Beneath the Eastern United States," 2022, Geochemistry Geophysics Geosystems
  • "Short-Period Surface-Wave Tomography in the Continental United States-A Resource for Research," 2021, Seismological Research Letters
  • "Precise Relative Magnitude and Relative Location Estimates of Low-Yield Industrial Blasts in Pennsylvania," 2020, Bulletin of the Seismological Society of America

Charles J. Ammon was awarded the title of Fellow of the American Geophysical Union (AGU) in 2015.

Best Publications

  • Iterative deconvolution and receiver-function estimation

    Juan Pablo Ligorría;Charles James Ammon

  • The great Sumatra-Andaman earthquake of 26 December 2004

    Thorne Lay;Thorne Lay;Hiroo Kanamori;Charles J. Ammon;Meredith Nettles

  • The isolation of receiver effects from teleseismic P waveforms

    Charles J. Ammon

  • On the nonuniqueness of receiver function inversions

    Charles J. Ammon;George E. Randall;George Zandt

  • Rupture Process of the 2004 Sumatra-Andaman Earthquake

    Charles J. Ammon;Chen Ji;Hong-Kie Thio;David Robinson

  • Continental crust composition constrained by measurements of crustal Poisson's ratio

    George Zandt;Charles J. Ammon

  • Joint inversion of receiver function and surface wave dispersion observations

    J. Julià;J. Julià;J. Julià;C. J. Ammon;R. B. Herrmann;R. B. Herrmann;and A. M. Correig

  • Depth‐varying rupture properties of subduction zone megathrust faults

    Thorne Lay;Hiroo Kanamori;Charles J. Ammon;Keith D. Koper

  • Possible large near-trench slip during the 2011 M w 9.0 off the Pacific coast of Tohoku Earthquake

    Thorne Lay;Charles J. Ammon;Hiroo Kanamori;Lian Xue

  • Moment tensor solutions for small and moderate earthquakes in the Ibero‐Maghreb region

    Daniel Stich;Charles J. Ammon;Jose Morales

  • A rupture model of the 2011 off the Pacific coast of Tohoku Earthquake

    Charles J. Ammon;Thorne Lay;Hiroo Kanamori;Michael Cleveland

  • Upper mantle velocity structure beneath the Tibetan Plateau from Pn travel time tomography

    D. E. McNamara;D. E. McNamara;D. E. McNamara;W. R. Walter;T. J. Owens;C. J. Ammon

  • Crustal structure in Ethiopia and Kenya from receiver function analysis: Implications for rift development in eastern Africa

    Mulugeta T. Dugda;Andrew A. Nyblade;Jordi Julia;Charles A. Langston

  • Teleseismic inversion for rupture process of the 27 February 2010 Chile (Mw 8.8) earthquake

    T. Lay;C. J. Ammon;H. Kanamori;K. D. Koper

  • The 2009 Samoa–Tonga great earthquake triggered doublet

    Thorne Lay;Charles J. Ammon;Hiroo Kanamori;Luis Rivera

  • Frequency-dependent rupture process of the 2011 Mw 9.0 Tohoku Earthquake: Comparison of short-period P wave backprojection images and broadband seismic rupture models

    Keith D. Koper;Alexander R. Hutko;Thorne Lay;Charles J. Ammon

  • The 17 July 2006 Java tsunami earthquake

    Charles J. Ammon;Hiroo Kanamori;Thorne Lay;Aaron A. Velasco

  • A great earthquake doublet and seismic stress transfer cycle in the central Kuril islands

    Charles J. Ammon;Hiroo Kanamori;Thorne Lay

  • Monitoring the Earthquake source process in North America

    R. B. Herrmann;H. Benz;Charles James Ammon

  • The 2006–2007 Kuril Islands great earthquake sequence

    Thorne Lay;Hiroo Kanamori;Charles J. Ammon;Alexander R. Hutko

  • Lithospheric Structure of the Arabian Shield From the Joint Inversion of Receiver Function and Surface-Wave Dispersion Observations

    Jordi Julia;Charles J Ammon;Robert B Herrimann

Frequent Co-Authors

Thorne Lay
Thorne Lay University of California, Santa Cruz
Hiroo Kanamori
Hiroo Kanamori California Institute of Technology
Robert B. Herrmann
Robert B. Herrmann Saint Louis University
Jordi Julià
Jordi Julià Federal University of Rio Grande do Norte
Keith D. Koper
Keith D. Koper University of Utah
Barry Voight
Barry Voight Pennsylvania State University
Terry C. Wallace
Terry C. Wallace Los Alamos National Laboratory
Andrew A. Nyblade
Andrew A. Nyblade Pennsylvania State University
Sridhar Anandakrishnan
Sridhar Anandakrishnan Pennsylvania State University
Charles A. Langston
Charles A. Langston University of Memphis

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