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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 44 4687 4312 1791 1588 335 7915

Timothy J. Kneafsey publications per year

The chart shows the history of publications by Timothy J. Kneafsey between 1997 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Timothy J. Kneafsey published across 29 years, from 1997 to 2025, averaging 12.6 papers a year. Output peaked at 30 publications in 2021. 21 of the 364 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1997 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2021. 1997: 1 publication 1998: 4 publications 1999: 0 publications 2000: 0 publications 2001: 6 publications 2002: 15 publications 2003: 10 publications 2004: 8 publications 2005: 11 publications 2006: 15 publications 2007: 6 publications 2008: 8 publications 2009: 8 publications 2010: 14 publications 2011: 18 publications 2012: 9 publications 2013: 13 publications 2014: 12 publications 2015: 16 publications 2016: 21 publications 2017: 25 publications 2018: 26 publications 2019: 20 publications 2020: 19 publications 2021: 30 publications 2022: 18 publications 2023: 10 publications 2024: 16 publications 2025: 5 publications
1997 2025

364 publications in total across all disciplines

View publications per year as a table
Timothy J. Kneafsey: publications per year, 1997 to 2025
Year Publications
1997 1
1998 4
1999 0
2000 0
2001 6
2002 15
2003 10
2004 8
2005 11
2006 15
2007 6
2008 8
2009 8
2010 14
2011 18
2012 9
2013 13
2014 12
2015 16
2016 21
2017 25
2018 26
2019 20
2020 19
2021 30
2022 18
2023 10
2024 16
2025 5
Total 364
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Timothy J. Kneafsey publications per year - data summary

  • Timothy J. Kneafsey, a Earth Science scholar from Lawrence Berkeley National Laboratory, has 364 publications recorded across 29 years, from 1997 to 2025.
  • The oldest publication on record dates to 1997 and the most recent to 2025.
  • The most productive year is 2021, with 30 publications.
  • The least productive year with any output is 1997, with 1 publication.
  • 2 of the 29 years in the span carry no publications at all (1999 and 2000).
  • The rate of publication averages 12.6 papers per year over the whole span, or 13.5 per year counting only the 27 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 79 publications, 22% of the career total.
  • Split into equal eras - 1997-2006: 70 publications (7.0 per year); 2007-2016: 125 publications (12.5 per year); 2017-2025: 169 publications (18.8 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Timothy J. Kneafsey 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 Timothy J. Kneafsey 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, 328–337 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: 335 publications — 90th percentile

90% 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
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 87 335
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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Timothy J. Kneafsey publication distribution in Earth Science in 2026 - data summary

  • The chart plots the publication count of all 9,176 Earth Science scientists ranked by Research.com in 2026, grouped into 58 ranges running from 38–47 to 603+ publications.
  • Timothy J. Kneafsey, a Earth Science scholar from Lawrence Berkeley National Laboratory, records 335 publications - the 90th percentile of the discipline.
  • 90% of ranked Earth Science scientists score the same or lower than Timothy J. Kneafsey, and about 10% score higher.
  • The median of the discipline falls in the 168–177 publications range, and Timothy J. Kneafsey ranks above the median.
  • The most crowded range is 128–137 publications, holding 557 scientists (6% of the field).
  • 58% of the field sits in the lowest quarter of the value range (up to 178–187 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 603 publications or more, 100 scientists in all (1% of the field).

Timothy J. Kneafsey 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 Timothy J. Kneafsey 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, 44 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: 44 D-Index — 50th percentile

50% 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 44
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
Download as CSV

Timothy J. Kneafsey D-index placement in Earth Science in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,176 Earth Science scientists ranked by Research.com in 2026, grouped into 77 ranges running from 30 to 106+ D-Index.
  • Timothy J. Kneafsey, a Earth Science scholar from Lawrence Berkeley National Laboratory, records 44 D-Index - the 50th percentile of the discipline.
  • 50% of ranked Earth Science scientists score the same or lower than Timothy J. Kneafsey, and about 50% score higher.
  • The median of the discipline falls in the 44 D-Index range, and Timothy J. Kneafsey falls inside that same range.
  • The most crowded range is 36 D-Index, holding 389 scientists (4% of the field).
  • 62% of the field sits in the lowest quarter of the value range (up to 49 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 106 D-Index or more, 98 scientists in all (1% of the field).

Overview

Timothy J. Kneafsey is affiliated with the Lawrence Berkeley National Laboratory in the United States. Their research spans multiple fields within engineering and earth sciences, with a strong focus on geophysical processes and subsurface engineering.

Their work primarily covers the main fields of Engineering and Earth and Planetary Sciences. More specifically, their subfields of study include Geophysics, Ocean Engineering, Mechanical Engineering, Environmental Engineering, and Atmospheric Science.

Kneafsey has contributed significantly to several key topics related to subsurface engineering and geophysical analysis, including:

  • Hydraulic Fracturing and Reservoir Analysis
  • Seismic Imaging and Inversion Techniques
  • Drilling and Well Engineering
  • Seismic Waves and Analysis
  • Groundwater flow and contamination studies
  • CO2 Sequestration and Geologic Interactions
  • Methane Hydrates and Related Phenomena

Their publication record shows frequent contributions to well-known research venues. Notable venues for their work include:

  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
  • Journal of Geophysical Research Solid Earth
  • Geothermics
  • Fuel
  • Geophysical Research Letters

Kneafsey has collaborated frequently with several coauthors across their projects, including:

  • Hunter Knox
  • Paul Schwering
  • Patrick Dobson
  • Jeffrey Burghardt
  • Pengcheng Fu

Some of their recent papers include the following:

  • "An international code comparison study on coupled thermal, hydrologic and geomechanical processes of natural gas hydrate-bearing sediments" (2020), published in Marine and Petroleum Geology
  • "Close Observation of Hydraulic Fracturing at EGS Collab Experiment 1: Fracture Trajectory, Microseismic Interpretations, and the Role of Natural Fractures" (2021), Journal of Geophysical Research Solid Earth
  • "Creation of a Mixed-Mode Fracture Network at Mesoscale Through Hydraulic Fracturing and Shear Stimulation" (2020), Journal of Geophysical Research Solid Earth
  • "Constraining maximum event magnitude during injection-triggered seismicity" (2021), Nature Communications
  • "Relative permeability of gas and water flow in hydrate-bearing porous media: A micro-scale study by lattice Boltzmann simulation" (2022), Fuel

Best Publications

  • PHYSICAL PROPERTIES OF HYDRATE-BEARING SEDIMENTS

    William F. Waite;J.C. Santamarina;D.D. Cortes;Brandon Dugan

  • Challenges, Uncertainties, and Issues Facing Gas Production From Gas-Hydrate Deposits

    George Moridis;Timothy S. Collett;Mehran Pooladi-Darvish;Steven H. Hancock

  • Methane hydrate formation and dissociation in a partially saturated core-scale sand sample

    Timothy J. Kneafsey;Liviu Tomutsa;George J. Moridis;Yongkoo Seol

  • Hydrate morphology: Physical properties of sands with patchy hydrate saturation

    S. Dai;J.C. Santamarina;William F. Waite;T.J. Kneafsey

  • Laboratory flow experiments for visualizing carbon dioxide-induced, density-driven brine convection

    Timothy J. Kneafsey;Karsten Pruess

  • Cryogenic fracturing for reservoir stimulation – Laboratory studies

    Minsu Cha;Xiaolong Yin;Timothy Kneafsey;Brent Johanson

  • Dewetting of Silica Surfaces upon Reactions with Supercritical CO2 and Brine: Pore-Scale Studies in Micromodels

    Yongman Kim;Jiamin Wan;Timothy J. Kneafsey;Tetsu K. Tokunaga

  • Pore habit of methane hydrate and its evolution in sediment matrix – Laboratory visualization with phase-contrast micro-CT

    Liang Lei;Yongkoo Seol;Jeong-Hoon Choi;Jeong-Hoon Choi;Timothy J. Kneafsey

  • Waterless fracturing technologies for unconventional reservoirs-opportunities for liquid nitrogen

    Lei Wang;Bowen Yao;Minsu Cha;Naif B. Alqahtani

  • Shales at all scales: Exploring coupled processes in mudrocks

    Anastasia G. Ilgen;Jason E. Heath;I. Yucel Akkutlu;L. Taras Bryndzia

  • Numerical simulation of salt precipitation in the fractures of a CO2-enhanced geothermal system

    Andrea Borgia;Karsten Pruess;Timothy J. Kneafsey;Curtis M. Oldenburg

  • Permeability of Laboratory-Formed Methane-Hydrate-Bearing Sand: Measurements and Observations Using X-Ray Computed Tomography

    Timothy J. Kneafsey;Yongkoo Seol;Arvind Gupta;Liviu Tomutsa

  • Studies of Reaction Kinetics of Methane Hydrate Dissocation in Porous Media

    George J. Moridis;Yongkoo Seol;Timothy J. Kneafsey

  • Porosity, permeability, and fluid flow in the Yellowstone geothermal system, Wyoming

    Patrick F Dobson;Timothy J Kneafsey;Jeffrey Hulen;Ardyth Simmons

  • Influence of wettability and permeability heterogeneity on miscible CO2 flooding efficiency

    Prem Bikkina;Jiamin Wan;Yongman Kim;Timothy J. Kneafsey

  • Physical property changes in hydrate-bearing sediment due to depressurization and subsequent repressurization

    William F. Waite;Timothy J. Kneafsey;William J. Winters;D. H. Mason

  • Landscape topography structures the soil microbiome in arctic polygonal tundra

    Neslihan Taş;Emmanuel Prestat;Shi Wang;Yuxin Wu

  • Composite thermal conductivity in a large heterogeneous porous methane hydrate sample.

    Arvind Gupta;Timothy J. Kneafsey;George J. Moridis;Yongkoo Seol

  • X-ray computed-tomography observations of water flow through anisotropic methane hydrate-bearing sand

    Yongkoo Seol;Timothy J. Kneafsey

  • CO2 injection-induced fracturing in naturally fractured shale rocks

    Lei Wang;Bowen Yao;Haojun Xie;Haojun Xie;Philip H. Winterfeld

  • Evaluation of accessible mineral surface areas for improved prediction of mineral reaction rates in porous media

    Lauren E. Beckingham;Lauren E. Beckingham;Carl I. Steefel;Alexander M. Swift;Marco Voltolini

  • Methane hydrate induced permeability modification for multiphase flow in unsaturated porous media

    Yongkoo Seol;Timothy J. Kneafsey

  • Shale Gas: Nanometer-Scale Observations and Well Modelling

    Dmitriy Silin;Timothy J. Kneafsey

  • Electrical and seismic response of saline permafrost soil during freeze - Thaw transition

    Yuxin Wu;Seiji Nakagawa;Timothy J. Kneafsey;Baptiste Dafflon

  • Waterless fracturing technologies for unconventional reservoirs-opportunities for liquid nitrogen

    Lei Wang;Bowen Yao;Yu-Shu Wu;Timothy Kneafsey

Frequent Co-Authors

Patrick F. Dobson
Patrick F. Dobson Lawrence Berkeley National Laboratory
Yongkoo Seol
Yongkoo Seol National Energy Technology Laboratory
George J. Moridis
George J. Moridis Lawrence Berkeley National Laboratory
Jonny Rutqvist
Jonny Rutqvist Lawrence Berkeley National Laboratory
Yu-Shu Wu
Yu-Shu Wu Colorado School of Mines
Barry Freifeld
Barry Freifeld Lawrence Berkeley National Laboratory
Eric Sonnenthal
Eric Sonnenthal Lawrence Berkeley National Laboratory
Lianjie Huang
Lianjie Huang Los Alamos National Laboratory
Susan S. Hubbard
Susan S. Hubbard Lawrence Berkeley National Laboratory

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