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Stewart P.H.T. Freeman

Stewart P.H.T. Freeman

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 33 8530 7925 860 799 88 3029

Stewart P.H.T. Freeman publications per year

The chart shows the history of publications by Stewart P.H.T. Freeman between 1990 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Stewart P.H.T. Freeman published across 36 years, from 1990 to 2025, averaging 3.7 papers a year. Output peaked at 16 publications in 2007. 2 of the 132 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1990 to 2025. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2007. 1990: 1 publication 1991: 0 publications 1992: 0 publications 1993: 1 publication 1994: 1 publication 1995: 4 publications 1996: 0 publications 1997: 5 publications 1998: 3 publications 1999: 2 publications 2000: 1 publication 2001: 0 publications 2002: 0 publications 2003: 0 publications 2004: 3 publications 2005: 5 publications 2006: 2 publications 2007: 16 publications 2008: 10 publications 2009: 7 publications 2010: 10 publications 2011: 4 publications 2012: 4 publications 2013: 11 publications 2014: 2 publications 2015: 11 publications 2016: 9 publications 2017: 6 publications 2018: 1 publication 2019: 5 publications 2020: 2 publications 2021: 1 publication 2022: 1 publication 2023: 2 publications 2024: 1 publication 2025: 1 publication
1990 2025

132 publications in total across all disciplines

View publications per year as a table
Stewart P.H.T. Freeman: publications per year, 1990 to 2025
Year Publications
1990 1
1991 0
1992 0
1993 1
1994 1
1995 4
1996 0
1997 5
1998 3
1999 2
2000 1
2001 0
2002 0
2003 0
2004 3
2005 5
2006 2
2007 16
2008 10
2009 7
2010 10
2011 4
2012 4
2013 11
2014 2
2015 11
2016 9
2017 6
2018 1
2019 5
2020 2
2021 1
2022 1
2023 2
2024 1
2025 1
Total 132
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Stewart P.H.T. Freeman 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 Stewart P.H.T. Freeman 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, 88–97 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: 88 publications — 7th percentile

7% 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 88
98–107 404
108–117 484
118–127 540
128–137 557
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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Stewart P.H.T. Freeman 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 Stewart P.H.T. Freeman 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, 33 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: 33 D-Index — 11th percentile

11% 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 33
34 366
35 372
36 389
37 366
38 344
39 349
40 296
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

Stewart P.H.T. Freeman is a researcher affiliated with the University of Glasgow in the United Kingdom. Their work spans multiple disciplines within Earth and Environmental Sciences, focusing predominantly on fields such as Atmospheric Science, Ecology, Paleontology, Earth-Surface Processes, and Environmental Chemistry. Freeman's research interests include Geology and Paleoclimatology, Cryospheric Studies, Polar Research and Ecology, Isotope Analysis in Ecology, Archaeology and Ancient Environmental Studies, Geological Formations and Processes, and Methane Hydrates and Related Phenomena.

Freeman has contributed to academic literature through various recent papers published in specialized journals. These include:

  • "Combined unsteady denudation and climatic gradient factors constrain carbonate landscape evolution: New insights from in situ cosmogenic 36Cl" (2020), published in Quaternary Geochronology
  • "Ice-free valleys in the Neptune Range of the Pensacola Mountains, Antarctica: glacial geomorphology, geochronology and potential as palaeoenvironmental archives" (2021), published in Antarctic Science
  • "Clean quartz matters for cosmogenic nuclide analyses: An exploration of the importance of sample purity using the CRONUS-N reference material" (2022), published in Quaternary Geochronology
  • "A DATABASE OF NERC RADIOCARBON MEASUREMENTS DETERMINED BY ACCELERATOR MASS SPECTROMETRY" (2023), published in Radiocarbon
  • "Another 6 years of radiocarbon secondary-standard AMS with two spectrometers" (2022), published in Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms

Freeman frequently collaborates with other scientists, with notable co-authors including:

  • Sheng Xu (4 joint publications)
  • David Small (3 joint publications)
  • Michael J. Bentley (3 joint publications)
  • Klaus M. Wilcken (2 joint publications)
  • Pauline Gulliver (2 joint publications)

The researcher has published primarily in venues such as Quaternary Geochronology, Antarctic Science, Radiocarbon, and Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms, with multiple publications appearing in Quaternary Geochronology and contributions also appearing in the SSRN Electronic Journal.

Freeman's contributions are characterized by a focus on isotopic and radiocarbon dating techniques, as well as geomorphological and environmental analysis in polar and other ecological contexts. Their work addresses fundamental questions related to landscape evolution, glacial geomorphology, and the precision of measurement techniques for dating samples in Earth sciences.

Best Publications

  • Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: Constraints on past ice volume change

    Michael J. Bentley;David E. Sugden;Christopher J. Fogwill;Anne M. Le Brocq

  • Towards more precise 10Be and 36Cl data from measurements at the 10−14 level: Influence of sample preparation

    S. Merchel;M. Arnold;G. Aumaitre;L. Benedetti

  • Southern Patagonian glacial chronology for the Last Glacial period and implications for Southern Ocean climate

    M. R. Kaplan;M. R. Kaplan;C. J. Fogwill;C. J. Fogwill;David Sugden;N. R. J. Hulton

  • Iodine isotopes in precipitation: temporal responses to (129)i emissions from the fukushima nuclear accident.

    Sheng Xu;Stewart P. H. T. Freeman;Xiaolin Hou;Akira Watanabe

  • Capabilities of the New SUERC 5MV AMS Facility for 14C Dating

    S Xu;R Anderson;C Bryant;G T Cook

  • Orogen-scale uplift in the central Italian Apennines drives episodic behaviour of earthquake faults.

    P.A. Cowie;R.J. Phillips;Gerald P. Roberts;K. McCaffrey

  • Single-grain cosmogenic 21Ne concentrations in fluvial sediments reveal spatially variable erosion rates

    Alexandru T. Codilean;Paul Bishop;Finlay M. Stuart;Trevor B. Hoey

  • Speciation of Radiocesium and Radioiodine in Aerosols from Tsukuba after the Fukushima Nuclear Accident

    Sheng Xu;Luyuan Zhang;Stewart P. H. T. Freeman;Xiaolin Hou

  • Cosmogenic 10Be and 26Al dating of paleolake shorelines in Tibet

    Ping Kong;Chunguang Na;Roderick Brown;Derek Fabel

  • Ultra-trace analysis of 36Cl by accelerator mass spectrometry: an interlaboratory study

    S. Merchel;S. Merchel;W. Bremser;V. Alfimov;M. Arnold

  • The deglacial history of southeast sector of the Greenland Ice Sheet during the Last Glacial Maximum

    David H. Roberts;Antony J. Long;Christoph Schnabel;Stewart Freeman

  • Influence of mollusk species on marine ΔR determinations

    Philippa L Ascough;Gordon T Cook;Andrew J Dugmore;E Marian Scott

  • A Cremated Bone Intercomparison Study

    Philip Naysmith;E. Marian Scott;Gordon T. Cook;Jan Heinemeier

  • The use of ‘bomb spike’ calibration and high-precision AMS 14C analyses to date salt-marsh sediments deposited during the past three centuries

    William A. Marshall;W. Roland Gehrels;Mark H. Garnett;Stewart P.H.T. Freeman

  • Tips and traps in the 14C bio-AMS preparation laboratory

    Bruce A Buchholz;Stewart P.H.T Freeman;Kurt W Haack;John S Vogel

  • Holocene deglacial history of the northeast Antarctic Peninsula – A review and new chronological constraints

    Joanne S. Johnson;Michael J. Bentley;Michael J. Bentley;Stephen J. Roberts;Steven A. Binnie

  • Cosmogenic nuclide measurements in southernmost South America and implications for landscape change

    M.R. Kaplan;A. Coronato;N.R.J. Hulton;J.O. Rabassa

  • Paleoseismology of the Mejillones Fault, northern Chile: Insights from cosmogenic 10Be and optically stimulated luminescence determinations

    L Gabriel González;S. A. Binnie;S. A. Binnie;R. Robinson

  • Rapid deglaciation of Marguerite Bay, western Antarctic Peninsula in the Early Holocene

    M.J. Bentley;M.J. Bentley;J.S. Johnson;D.A. Hodgson;T. Dunai

  • Extent of the last ice sheet in northern Scotland tested with cosmogenic 10Be exposure ages

    William M. Phillips;Adrian M. Hall;Colin K. Ballantyne;Steven Binnie

  • First cosmogenic 10Be age constraint on the timing of Younger Dryas glaciation and ice cap thickness, western Scottish Highlands†

    Nicholas R. Golledge;Nicholas R. Golledge;Derek Fabel;Jeremy D. Everest;Stewart Freeman

Frequent Co-Authors

Sheng Xu
Sheng Xu Tianjin University
Robert C. Finkel
Robert C. Finkel Lawrence Livermore National Laboratory
Derek Fabel
Derek Fabel Scottish Universities Environmental Research Centre
Dylan H. Rood
Dylan H. Rood Imperial College London
Marc W. Caffee
Marc W. Caffee Purdue University West Lafayette
Andrew S. Hein
Andrew S. Hein University of Edinburgh
Tibor J. Dunai
Tibor J. Dunai University of Cologne
Michael J. Bentley
Michael J. Bentley Durham University
Maurice Arnold
Maurice Arnold Collège de France
Charlotte Bryant
Charlotte Bryant Scottish Universities Environmental Research Centre

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