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C. Özgen Karacan

C. Özgen Karacan

United States Geological Survey
United States

Last Updated:

D-Index & Metrics

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Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 36 7140 6604 2475 2189 106 5916

C. Özgen Karacan publications per year

The chart shows the history of publications by C. Özgen Karacan between 1997 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. C. Özgen Karacan published across 30 years, from 1997 to 2026, averaging 3.8 papers a year. Output peaked at 10 publications in 2009. 6 of the 115 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1997 to 2026. Vertical axis: number of publications, 0 to 10. Peak 10 publications in 2009. 1997: 2 publications 1998: 0 publications 1999: 1 publication 2000: 4 publications 2001: 5 publications 2002: 1 publication 2003: 8 publications 2004: 2 publications 2005: 2 publications 2006: 0 publications 2007: 5 publications 2008: 6 publications 2009: 10 publications 2010: 4 publications 2011: 5 publications 2012: 4 publications 2013: 6 publications 2014: 4 publications 2015: 3 publications 2016: 1 publication 2017: 3 publications 2018: 1 publication 2019: 7 publications 2020: 4 publications 2021: 7 publications 2022: 6 publications 2023: 7 publications 2024: 1 publication 2025: 5 publications 2026: 1 publication
1997 2026

115 publications in total across all disciplines

View publications per year as a table
C. Özgen Karacan: publications per year, 1997 to 2026
Year Publications
1997 2
1998 0
1999 1
2000 4
2001 5
2002 1
2003 8
2004 2
2005 2
2006 0
2007 5
2008 6
2009 10
2010 4
2011 5
2012 4
2013 6
2014 4
2015 3
2016 1
2017 3
2018 1
2019 7
2020 4
2021 7
2022 6
2023 7
2024 1
2025 5
2026 1
Total 115
Download as CSV

C. Özgen Karacan publications per year - data summary

  • C. Özgen Karacan, a Earth Science scholar from United States Geological Survey, has 115 publications recorded across 30 years, from 1997 to 2026.
  • The oldest publication on record dates to 1997 and the most recent to 2026.
  • The most productive year is 2009, with 10 publications.
  • The least productive years with any output are 1999, 2002, 2016, 2018 and others, with 1 publication each.
  • 2 of the 30 years in the span carry no publications at all (1998 and 2006).
  • The rate of publication averages 3.8 papers per year over the whole span, or 4.1 per year counting only the 28 years with at least one publication.
  • The last 5 years on the chart (2022-2026) hold 20 publications, 17% of the career total.
  • Split into equal eras - 1997-2006: 25 publications (2.5 per year); 2007-2016: 48 publications (4.8 per year); 2017-2026: 42 publications (4.2 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

C. Özgen Karacan 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 C. Özgen Karacan 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, 98–107 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: 106 publications — 14th percentile

14% 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
98–107 404 106
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
Download as CSV

C. Özgen Karacan 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.
  • C. Özgen Karacan, a Earth Science scholar from United States Geological Survey, records 106 publications - the 14th percentile of the discipline.
  • 14% of ranked Earth Science scientists score the same or lower than C. Özgen Karacan, and about 86% score higher.
  • The median of the discipline falls in the 168–177 publications range, and C. Özgen Karacan ranks below 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).

C. Özgen Karacan 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 C. Özgen Karacan 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, 36 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: 36 D-Index — 23rd percentile

23% 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 36
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
Download as CSV

C. Özgen Karacan 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.
  • C. Özgen Karacan, a Earth Science scholar from United States Geological Survey, records 36 D-Index - the 23rd percentile of the discipline.
  • 23% of ranked Earth Science scientists score the same or lower than C. Özgen Karacan, and about 77% score higher.
  • The median of the discipline falls in the 44 D-Index range, and C. Özgen Karacan ranks below the median.
  • 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).

Best Publications

  • Coal mine methane: A review of capture and utilization practices with benefits to mining safety and to greenhouse gas reduction

    C. Özgen Karacan;Felicia A. Ruiz;Michael Cotè;Sally Phipps

  • Swelling-Induced Volumetric Strains Internal to a Stressed Coal Associated with CO2 Sorption

    C. Özgen Karacan

  • Heterogeneous Sorption and Swelling in a Confined and Stressed Coal during CO2 Injection

    Unknown

  • Adsorption and gas transport in coal microstructure: investigation and evaluation by quantitative X-ray CT imaging

    Unknown

  • Behavior and effect of different coal microlithotypes during gas transport for carbon dioxide sequestration into coal seams

    Unknown

  • Reservoir simulation-based modeling for characterizing longwall methane emissions and gob gas venthole production

    Unknown

  • Fracture/cleat analysis of coals from Zonguldak Basin (northwestern Turkey) relative to the potential of coalbed methane production

    Unknown

  • Modeling and prediction of ventilation methane emissions of U.S. longwall mines using supervised artificial neural networks

    C. Özgen Karacan

  • Prediction of Porosity and Permeability of Caved Zone in Longwall Gobs

    C. Özgen Karacan

  • Numerical analysis of the influence of in-seam horizontal methane drainage boreholes on longwall face emission rates

    Unknown

  • Hydraulic conductivity changes and influencing factors in longwall overburden determined by slug tests in gob gas ventholes

    C. Özgen Karacan;Gerrit Goodman

  • An analysis of reservoir conditions and responses in longwall panel overburden during mining and its effect on gob gas well performance

    Steven J. Schatzel;C. Özgen Karacan;Heather Dougherty;Gerrit V.R. Goodman

  • Forecasting gob gas venthole production performances using intelligent computing methods for optimum methane control in longwall coal mines

    C. Özgen Karacan

  • Behavior and effect of SARA fractions of oil during combustion

    M.V. Kok;C.O. Karacan

  • Insights from Rock-Eval analysis on the influence of sample weight on hydrocarbon generation from Lower Permian organic matter rich rocks, West Bokaro basin, India

    Unknown

  • Development and application of reservoir models and artificial neural networks for optimizing ventilation air requirements in development mining of coal seams

    C. Özgen Karacan

  • Gas sorption and transport in coals : A poroelastic medium approach

    Jun Yi;I.Yücel Akkutlu;C.Özgen Karacan;C.R. Clarkson

  • Geostatistical modeling of the gas emission zone and its in-place gas content for Pittsburgh-seam mines using sequential Gaussian simulation

    C. Özgen Karacan;Ricardo A. Olea;Gerrit Goodman

  • A numerical evaluation on the effects of impermeable faults on degasification efficiency and methane emissions during underground coal mining

    Unknown

  • Production history matching to determine reservoir properties of important coal groups in the Upper Pottsville formation, Brookwood and Oak Grove fields, Black Warrior Basin, Alabama

    C. Özgen Karacan

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