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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 51 3293 3015 1308 1164 182 8178

Thomas Harter publications per year

The chart shows the history of publications by Thomas Harter between 1993 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Thomas Harter published across 33 years, from 1993 to 2025, averaging 6.7 papers a year. Output peaked at 15 publications in 2014. 21 of the 222 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1993 to 2025. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2014. 1993: 2 publications 1994: 1 publication 1995: 0 publications 1996: 3 publications 1997: 0 publications 1998: 3 publications 1999: 1 publication 2000: 3 publications 2001: 7 publications 2002: 4 publications 2003: 10 publications 2004: 11 publications 2005: 13 publications 2006: 6 publications 2007: 5 publications 2008: 5 publications 2009: 7 publications 2010: 3 publications 2011: 7 publications 2012: 9 publications 2013: 7 publications 2014: 15 publications 2015: 11 publications 2016: 9 publications 2017: 7 publications 2018: 5 publications 2019: 14 publications 2020: 13 publications 2021: 9 publications 2022: 5 publications 2023: 6 publications 2024: 10 publications 2025: 11 publications
1993 2025

222 publications in total across all disciplines

View publications per year as a table
Thomas Harter: publications per year, 1993 to 2025
Year Publications
1993 2
1994 1
1995 0
1996 3
1997 0
1998 3
1999 1
2000 3
2001 7
2002 4
2003 10
2004 11
2005 13
2006 6
2007 5
2008 5
2009 7
2010 3
2011 7
2012 9
2013 7
2014 15
2015 11
2016 9
2017 7
2018 5
2019 14
2020 13
2021 9
2022 5
2023 6
2024 10
2025 11
Total 222
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Thomas Harter 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 Thomas Harter 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, 178–187 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: 182 publications — 55th percentile

55% 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
138–147 491
148–157 495
158–167 458
168–177 490
178–187 414 182
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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Thomas Harter 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 Thomas Harter 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, 51 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: 51 D-Index — 66th percentile

66% 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
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178 51
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

Thomas Harter is affiliated with the University of California, Davis in the United States. Their research predominantly focuses on environmental science, with a particular emphasis on groundwater and water resources. The scientist has contributed extensively to subfields such as environmental engineering, water science and technology, geochemistry and petrology, ocean engineering, and civil and structural engineering.

The main topics of Harter's work include:

  • Groundwater flow and contamination studies
  • Hydrology and watershed management studies
  • Groundwater and isotope geochemistry
  • Soil and unsaturated flow
  • Water resources management and optimization
  • Soil and water nutrient dynamics
  • Urban stormwater management solutions

Recent publications by Thomas Harter cover a range of groundwater and hydrological issues. Selected papers include:

  • "Effect of Groundwater Age and Recharge Source on Nitrate Concentrations in Domestic Wells in the San Joaquin Valley" (2021), published in Environmental Science & Technology
  • "Anthropogenic basin closure and groundwater salinization (ABCSAL)" (2020), published in Journal of Hydrology
  • "Potential effects on groundwater quality associated with infiltrating stormwater through dry wells for aquifer recharge" (2022), published in Journal of Contaminant Hydrology
  • "Planning for groundwater sustainability accounting for uncertainty and costs: An application to California's Central Valley" (2020), published in Journal of Environmental Management
  • "Quantifying the uncertainty in nitrogen application and groundwater nitrate leaching in manure based cropping systems" (2020), published in Agricultural Systems

Frequent publication venues for Harter's research include:

  • Journal of Hydrology
  • Water Resources Research
  • SSRN Electronic Journal
  • Vadose Zone Journal
  • Hydrology and Earth System Sciences

The scientist has collaborated regularly with several coauthors, including:

  • Leland Scantlebury
  • Graham E. Fogg
  • Isaya Kisekka
  • Christopher V. Henri
  • Ulrich Hirn

Best Publications

  • Dairy Wastewater, Aquaculture, and Spawning Fish as Sources of Steroid Hormones in the Aquatic Environment

    Edward P. Kolodziej;Thomas Harter;David L. Sedlak

  • Assessment of sources and fate of nitrate in shallow groundwater of an agricultural area by using a multi-tracer approach

    Ernesto Pastén-Zapata;Rogelio Ledesma-Ruiz;Thomas Harter;Aldo I. Ramírez

  • Upscaling Hydraulic Properties and Soil Water Flow Processes in Heterogeneous Soils: A Review

    H Vereecken;R Kasteel;Jan Vanderborght;T Harter

  • Colloid Transport and Filtration of Cryptosporidium parvum in Sandy Soils and Aquifer Sediments

    Thomas Harter;Sonja Wagner;Edward R. Atwill

  • Use and environmental occurrence of antibiotics in freestall dairy farms with manured forage fields.

    Naoko Watanabe;Brian A. Bergamaschi;Keith A. Loftin;Michael T. Meyer

  • Explaining soil moisture variability as a function of mean soil moisture: A stochastic unsaturated flow perspective

    H Vereecken;T Kamai;T Harter;R Kasteel

  • Shallow groundwater quality on dairy farms with irrigated forage crops.

    Thomas Harter;Harley Davis;Marsha C Mathews;Roland D Meyer

  • Identifying sources of groundwater nitrate contamination in a large alluvial groundwater basin with highly diversified intensive agricultural production.

    K. M. Lockhart;A. M. King;Thomas Harter

  • Neural Networks Prediction of Soil Hydraulic Functions for Alluvial Soils Using Multistep Outflow Data

    B. Minasny;J. W. Hopmans;T. Harter;S. O. Eching

  • Investigation of the geochemical evolution of groundwater under agricultural land: A case study in northeastern Mexico

    Rogelio Ledesma-Ruiz;Ernesto Pastén-Zapata;Roberto Parra;Thomas Harter

  • A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA

    Katherine M. Ransom;Bernard T. Nolan;Jonathan A. Traum;Claudia C. Faunt

  • Saturated Zone Denitrification: Potential for Natural Attenuation of Nitrate Contamination in Shallow Groundwater Under Dairy Operations

    M J Singleton;B K Esser;J E Moran;G B Hudson

  • A Numerical Model for Water Flow and Chemical Transport in Variably Saturated Porous Media

    T.-C. Jim Yeh;Rajesh Srivastava;Amado Guzman;Thomas Harter

  • The role of perched aquifers in hydrological connectivity and biogeochemical processes in vernal pool landscapes, Central Valley, California

    Mark Cable Rains;Graham E. Fogg;Thomas Harter;Randy A. Dahlgren

  • Transport of Cryptosporidium parvum Oocysts through Vegetated Buffer Strips and Estimated Filtration Efficiency

    Edward R. Atwill;Lingling Hou;Betsy M. Karle;Thomas Harter

  • Environmental occurrence and shallow ground water detection of the antibiotic monensin from dairy farms.

    Naoko Watanabe;Thomas H. Harter;Brian A. Bergamaschi

  • Association of Cryptosporidium parvum with Suspended Particles: Impact on Oocyst Sedimentation

    Kristin E. Searcy;Aaron I. Packman;Edward R. Atwill;Thomas Harter

  • Effect of sulfonamide antibiotics on microbial diversity and activity in a Californian Mollic Haploxeralf

    Iris R. Gutiérrez;Naoko Watanabe;Thomas Harter;Bruno Glaser

  • Soil suitability index identifies potential areas for groundwater banking on agriculturallands

    A.T. O'Geen;Matthew B.B. Saal;Helen E Dahlke;David A Doll

  • Estimation of groundwater pumping as closure to the water balance of a semi-arid, irrigated agricultural basin

    Nels Ruud;Thomas Harter;Alec Naugle

  • Conditional stochastic analysis of solute transport in heterogeneous, variably saturated soils

    Thomas Harter;Thomas Harter;T.-C. Jim Yeh

  • Inverse modeling of large-scale spatially distributed vadose zone properties using global optimization

    Jasper A. Vrugt;Gerrit Schoups;Jan W. Hopmans;Chuck Young

Frequent Co-Authors

Edward R. Atwill
Edward R. Atwill University of California, Davis
Jan W. Hopmans
Jan W. Hopmans University of California, Davis
Graham E. Fogg
Graham E. Fogg University of California, Davis
Aaron I. Packman
Aaron I. Packman Northwestern University
Jay R. Lund
Jay R. Lund University of California, Davis
Brian A. Bergamaschi
Brian A. Bergamaschi United States Geological Survey
Wesley W. Wallender
Wesley W. Wallender University of California, Davis
Bellie Sivakumar
Bellie Sivakumar Indian Institute of Technology Bombay
William R. Horwath
William R. Horwath University of California, Davis
Richard E. Howitt
Richard E. Howitt University of California, Davis

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Lastly, the growing field of information management intersects with Earth Science when it comes to data and archiving. Choosing ala accredited library science programs online can prepare graduates for specialized roles in data curation and geoscience information services.

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