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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 40 5710 5282 609 572 136 8172

Simon D. P. Williams publications per year

The chart shows the history of publications by Simon D. P. Williams between 1994 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Simon D. P. Williams published across 33 years, from 1994 to 2026, averaging 5 papers a year. Output peaked at 16 publications in 2020. 9 of the 165 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1994 to 2026. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2020. 1994: 1 publication 1995: 1 publication 1996: 0 publications 1997: 4 publications 1998: 2 publications 1999: 4 publications 2000: 0 publications 2001: 1 publication 2002: 1 publication 2003: 3 publications 2004: 1 publication 2005: 3 publications 2006: 5 publications 2007: 4 publications 2008: 4 publications 2009: 8 publications 2010: 5 publications 2011: 3 publications 2012: 3 publications 2013: 10 publications 2014: 12 publications 2015: 10 publications 2016: 4 publications 2017: 6 publications 2018: 5 publications 2019: 13 publications 2020: 16 publications 2021: 11 publications 2022: 6 publications 2023: 5 publications 2024: 5 publications 2025: 8 publications 2026: 1 publication
1994 2026

165 publications in total across all disciplines

View publications per year as a table
Simon D. P. Williams: publications per year, 1994 to 2026
Year Publications
1994 1
1995 1
1996 0
1997 4
1998 2
1999 4
2000 0
2001 1
2002 1
2003 3
2004 1
2005 3
2006 5
2007 4
2008 4
2009 8
2010 5
2011 3
2012 3
2013 10
2014 12
2015 10
2016 4
2017 6
2018 5
2019 13
2020 16
2021 11
2022 6
2023 5
2024 5
2025 8
2026 1
Total 165
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Simon D. P. Williams 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 Simon D. P. Williams sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 128–137 publications, is where this scientist sits. 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
38–47 publications 603+

This scientist: 136 publications — 31st percentile

31% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557 136
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414
188–197 401
198–207 333
208–217 292
218–227 290
228–237 262
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100
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Simon D. P. Williams 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 Simon D. P. Williams sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 40 D-Index, is where this scientist sits. 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: 40 D-Index — 38th percentile

38% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296 40
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178
52 182
53 178
54 163
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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Overview

Simon D. P. Williams is affiliated with the National Oceanography Centre in the United Kingdom. Their research primarily focuses on the intersection of Earth and Planetary Sciences, Environmental Science, and Engineering. The work includes specific attention to subfields such as Oceanography, Aerospace Engineering, Environmental Engineering, Global and Planetary Change, and Geophysics.

The scientist's research topics cover a range of areas, including:

  • Geophysics and Gravity Measurements
  • GNSS positioning and interference
  • Soil Moisture and Remote Sensing
  • Climate variability and models
  • Ionosphere and magnetosphere dynamics
  • Oceanographic and Atmospheric Processes
  • Earthquake and tectonic studies

Simon D. P. Williams has contributed to several recent papers, notably:

  • "SNR-based GNSS reflectometry for coastal sea-level altimetry: results from the first IAG inter-comparison campaign" (2020), published in Journal of Geodesy
  • "Dynamic Sea Level Variation From GNSS: 2020 Shumagin Earthquake Tsunami Resonance and Hurricane Laura" (2020), published in Geophysical Research Letters
  • "Improved and extended tide gauge records for the British Isles leading to more consistent estimates of sea level rise and acceleration since 1958" (2020), published in Progress In Oceanography
  • "Raytracing atmospheric delays in ground-based GNSS reflectometry" (2020), published in Journal of Geodesy
  • "Demonstrating the Potential of Low-Cost GPS Units for the Remote Measurement of Tides and Water Levels Using Interferometric Reflectometry" (2020), published in Journal of Atmospheric and Oceanic Technology

Frequent co-authors collaborating with Simon D. P. Williams include:

  • Felipe Geremia-Nievinski
  • Paul S. Bell
  • Thalia Nikolaidou
  • Marcelo C. Santos
  • David L. McCann

Publication venues where this scientist regularly contributes include:

  • Journal of Geodesy
  • Zenodo (CERN European Organization for Nuclear Research)
  • Progress In Oceanography
  • Geophysical Research Letters
  • Journal of Atmospheric and Oceanic Technology

Best Publications

  • Error analysis of continuous GPS position time series

    Simon D. P. Williams;Yehuda Bock;Peng Fang;Paul Jamason

  • Southern California permanent GPS geodetic array: Error analysis of daily position estimates and site velocities

    Jie Zhang;Yehuda Bock;Hadley Johnson;Peng Fang

  • The effect of coloured noise on the uncertainties of rates estimated from geodetic time series

    S. D. P. Williams

  • CATS: GPS coordinate time series analysis software

    Simon D. P. Williams

  • Fast error analysis of continuous GNSS observations with missing data

    M. S. Bos;R. M. S. Fernandes;S. D. P. Williams;L. Bastos

  • Integrated satellite interferometry: Tropospheric noise, GPS estimates and implications for interferometric synthetic aperture radar products

    Simon Williams;Yehuda Bock;Peng Fang

  • Vertical GPS ground motion rates in the Euro-Mediterranean region: New evidence of velocity gradients at different spatial scales along the Nubia-Eurasia plate boundary

    Enrico Serpelloni;Claudio Faccenna;Giorgio Spada;Danan Dong

  • Detecting offsets in GPS time series: First results from the detection of offsets in GPS experiment

    Julien Gazeaux;Simon D.P. Williams;Matt King;Matt King;Machiel Bos

  • Fast error analysis of continuous GPS observations

    M. S. Bos;R. M. S. Fernandes;R. M. S. Fernandes;S. D. P. Williams;L. Bastos

  • Rates of sea‐level change over the past century in a geocentric reference frame

    G. Wöppelmann;C. Letetrel;A. Santamaria;M.-N. Bouin

  • Offsets in Global Positioning System time series

    Simon D. P. Williams

  • Southern California Permanent GPS Geodetic Array: Continuous measurements of regional crustal deformation between the 1992 Landers and 1994 Northridge earthquakes

    Y. Bock;S. Wdowinski;S. Wdowinski;P. Fang;Jiahua Zhang

  • Trends in UK mean sea level revisited

    P. Woodworth;Felix Norman Teferle;R. M. Bingley;I. Shennan

  • A 10-Year Comparison of Water Levels Measured with a Geodetic GPS Receiver versus a Conventional Tide Gauge

    Kristine M. Larson;Richard D. Ray;Simon D. P. Williams

  • Widespread low rates of Antarctic glacial isostatic adjustment revealed by GPS observations

    Ian D. Thomas;Matt A. King;Michael J. Bentley;Pippa L. Whitehouse

  • Uncertainty of absolute gravity measurements

    Michel Van Camp;Simon D. P. Williams;Olivier Francis

  • Improved Constraints on Models of Glacial Isostatic Adjustment: A Review of the Contribution of Ground-Based Geodetic Observations

    Matt A. King;Zuheir Altamimi;Johannes Boehm;Machiel Bos

  • Non‐tidal ocean loading effects on geodetic GPS heights

    S. D. P. Williams;N. T. Penna

  • The effect of temporal correlated noise on the sea level rate and acceleration uncertainty

    M. S. Bos;S. D. P. Williams;I. B. Araújo;L. Bastos

  • The color of sea level: Importance of spatial variations in spectral shape for assessing the significance of trends

    Chris W. Hughes;Simon D. P. Williams

  • Tropospheric delays in ground-based GNSS Multipath Reflectometry – experimental evidence from coastal sites

    S. D. P. Williams;F. G. Nievinski

Frequent Co-Authors

Philip L. Woodworth
Philip L. Woodworth National Oceanography Centre
Chris W. Hughes
Chris W. Hughes University of Liverpool
Svetlana Jevrejeva
Svetlana Jevrejeva National Oceanography Centre
Matt A. King
Matt A. King University of Tasmania
Yehuda Bock
Yehuda Bock University of California, San Diego
Jianghui Geng
Jianghui Geng Wuhan University
Robert Smalley
Robert Smalley University of Memphis
Joanne Williams
Joanne Williams University of Edinburgh
Ian W. D. Dalziel
Ian W. D. Dalziel The University of Texas at Austin
Olivier Francis
Olivier Francis University of Luxembourg

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