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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 72 889 788 422 364 204 14460

J. Kirk Cochran publications per year

The chart shows the history of publications by J. Kirk Cochran between 1974 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. J. Kirk Cochran published across 52 years, from 1974 to 2025, averaging 4.3 papers a year. Output peaked at 11 publications in 2018. 5 of the 226 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1974 to 2025. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 2018. 1974: 1 publication 1975: 1 publication 1976: 2 publications 1977: 2 publications 1978: 1 publication 1979: 5 publications 1980: 5 publications 1981: 3 publications 1982: 9 publications 1983: 5 publications 1984: 2 publications 1985: 1 publication 1986: 3 publications 1987: 4 publications 1988: 3 publications 1989: 1 publication 1990: 3 publications 1991: 3 publications 1992: 4 publications 1993: 4 publications 1994: 2 publications 1995: 3 publications 1996: 2 publications 1997: 5 publications 1998: 5 publications 1999: 4 publications 2000: 2 publications 2001: 2 publications 2002: 7 publications 2003: 4 publications 2004: 2 publications 2005: 4 publications 2006: 4 publications 2007: 5 publications 2008: 7 publications 2009: 8 publications 2010: 8 publications 2011: 8 publications 2012: 3 publications 2013: 9 publications 2014: 4 publications 2015: 7 publications 2016: 6 publications 2017: 9 publications 2018: 11 publications 2019: 9 publications 2020: 7 publications 2021: 4 publications 2022: 7 publications 2023: 1 publication 2024: 4 publications 2025: 1 publication
1974 2025

226 publications in total across all disciplines

View publications per year as a table
J. Kirk Cochran: publications per year, 1974 to 2025
Year Publications
1974 1
1975 1
1976 2
1977 2
1978 1
1979 5
1980 5
1981 3
1982 9
1983 5
1984 2
1985 1
1986 3
1987 4
1988 3
1989 1
1990 3
1991 3
1992 4
1993 4
1994 2
1995 3
1996 2
1997 5
1998 5
1999 4
2000 2
2001 2
2002 7
2003 4
2004 2
2005 4
2006 4
2007 5
2008 7
2009 8
2010 8
2011 8
2012 3
2013 9
2014 4
2015 7
2016 6
2017 9
2018 11
2019 9
2020 7
2021 4
2022 7
2023 1
2024 4
2025 1
Total 226
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J. Kirk Cochran 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 J. Kirk Cochran 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, 198–207 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: 204 publications — 64th percentile

64% 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
198–207 333 204
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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J. Kirk Cochran 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 J. Kirk Cochran 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, 72 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: 72 D-Index — 91st percentile

91% 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
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 72
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

J. Kirk Cochran is affiliated with Stony Brook University in the United States and has contributed extensively to the fields of Earth and Planetary Sciences as well as Environmental Science. Their research spans a range of topics with a particular focus on geology, isotope geochemistry, and marine environments.

The scientist has published 33 works in Earth and Planetary Sciences and 20 in Environmental Science, demonstrating a strong interdisciplinary approach. Subfields of study include:

  • Oceanography
  • Atmospheric Science
  • Environmental Chemistry
  • Ecology
  • Global and Planetary Change

Main topics of their research include:

  • Geology and Paleoclimatology Research
  • Methane Hydrates and Related Phenomena
  • Isotope Analysis in Ecology
  • Marine and coastal ecosystems
  • Groundwater and Isotope Geochemistry
  • Hydrocarbon exploration and reservoir analysis
  • Marine Biology and Ecology Research

Their recent papers indicate a focus on isotope geochemistry and environmental processes in coastal and marine settings. Selected recent publications are:

  • "Quantifying 210Po/210Pb Disequilibrium in Seawater: A Comparison of Two Precipitation Methods With Differing Results," 2021, Frontiers in Marine Science
  • "Radium Mass Balance Sensitivity Analysis for Submarine Groundwater Discharge Estimation in Semi-Enclosed Basins: The Case Study of Long Island Sound," 2020, Frontiers in Environmental Science
  • "Investigating Boron Isotopes for Identifying Nitrogen Sources Supplied by Submarine Groundwater Discharge to Coastal Waters," 2020, Frontiers in Environmental Science
  • "LATE CRETACEOUS METHANE SEEPS AS HABITATS FOR NEWLY HATCHED AMMONITES," 2020, Palaios
  • "Small-Scale Geochemical Heterogeneities and Seasonal Variation of Iron and Sulfide in Salt Marshes Revealed by Two-Dimensional Sensors," 2021, Frontiers in Earth Science

J. Kirk Cochran frequently collaborates with several researchers in related fields. Notable coauthors include:

  • Neil H. Landman
  • Matthew P. Garb
  • Joseph Tamborski
  • James D. Witts
  • Jamie Brezina

The scientist's work often appears in prominent publication venues such as:

  • Abstracts with programs - Geological Society of America
  • Geology
  • Frontiers in Environmental Science
  • Global Biogeochemical Cycles
  • Frontiers in Earth Science

In addition to journal articles, J. Kirk Cochran has contributed to book publications with Springer Nature, notably the 2022 work titled Ancient Hydrocarbon Seeps, which has garnered citations in the field.

Best Publications

  • Carbon and nitrogen export during the JGOFS North Atlantic Bloom experiment estimated from 234Th: 238U disequilibria

    Ken O Buesseler;Michael P Bacon;J Kirk Cochran;Hugh D Livingston

  • Sulfate reduction, diffusion, and bioturbation in Long Island Sound sediments; report of the FOAM Group

    M. B. Goldhaber;R. C. Aller;J. K. Cochran;J. K. Rosenfeld

  • 234Th/238U disequilibrium in near-shore sediment: Particle reworking and diagenetic time scales

    Robert C. Aller;J. Kirk Cochran

  • Effects of biological sediment mixing on the210Pb chronology and trace metal distribution in a Long Island Sound sediment core

    L.K. Benninger;R.C. Aller;J.K. Cochran;K.K. Turekian

  • Accretion rates and sediment accumulation in Rhode Island salt marshes

    S. Bricker-Urso;S. W. Nixon;J. K. Cochran;D. J. Hirschberg

  • An assessment of particulate organic carbon to thorium-234 ratios in the ocean and their impact on the application of 234Th as a POC flux proxy

    K.O. Buesseler;C.R. Benitez-Nelson;S.B. Moran;A. Burd

  • Uranium removal in oceanic sediments and the oceanic U balance

    Unknown

  • Particle mixing rates in sediments of the eastern equatorial Pacific: Evidence from 210Pb, 239,240Pu and 137Cs distributions at MANOP sites

    J.Kirk Cochran;J.Kirk Cochran

  • The geochemistry of uranium and thorium in coastal marine sediments and sediment pore waters

    J.Kirk Cochran;Anne E Carey;Edward R Sholkovitz;Lolita D Surprenant

  • Radiocarbon and 210Pb distribution in submersible-taken deep-sea cores from Project FAMOUS

    Y. Nozaki;J. Kirk Cochran;Karl K. Turekian;George Keller

  • Export flux of carbon at the equator during the EqPac time-series cruises estimated from 234Th measurements

    M.P. Bacon;J.K. Cochran;D. Hirschberg;T.R. Hammar

  • Distribution of Heavy Metal and PCB Contaminants in the Sediments of an Urban Estuary: The Hudson River

    Huan Feng;J. Kirk Cochran;Honoratha Lwiza;Bruce J. Brownawell

  • Uranium geochemistry in estuarine sediments: Controls on removal and release processes

    Christina E Barnes;J.Kirk Cochran

  • 234Th sorption and export models in the water column: A review

    Nicolas Savoye;Claudia R. Benitez-Nelson;Adrian B. Burd;J. Kirk Cochran

  • Particle mixing rates in deep-sea sediments determined from excess 210Pb and 32Si profiles

    David J. DeMaster;J. Kirk Cochran

  • Upper ocean export of particulate organic carbon and biogenic silica in the Southern Ocean along 170°W

    K.O. Buesseler;L. Ball;J. Andrews;J.K. Cochran

  • Comparison of Different Tracers and Methods Used to Quantify Bioturbation During a Spring Bloom: 234-Thorium, Luminophores and Chlorophylla

    M. Gerino;R.C. Aller;C. Lee;J.K. Cochran

  • Radium mass-balance in Jamaica Bay, NY: Evidence for a substantial flux of submarine groundwater

    Aaron J. Beck;John P. Rapaglia;J. Kirk Cochran;Henry J. Bokuniewicz

  • Determination of thorium isotopes in seawater by nondestructive and radiochemical procedures

    Ken O Buesseler;J.Kirk Cochran;Michael P Bacon;Hugh D Livingston

  • Short-lived U/Th Series Radionuclides in the Ocean: Tracers for Scavenging Rates, Export Fluxes and Particle Dynamics

    J. K. Cochran;P. Masqué

  • Natural and anthropogenic radionuclide distributions in the northwest Atlantic Ocean

    J. Kirk Cochran;Hugh D. Livingston;David J. Hirschberg;Lolita D. Surprenant

  • Tracking particle-associated processes in nearshore environments by use of 234Th/238U disequilibrium

    Robert C. Aller;Larry K. Benninger;J. Kirk Cochran

  • Short-lived thorium isotopes (234Th, 228Th) as indicators of POC export and particle cycling in the Ross Sea, Southern Ocean

    J.K. Cochran;K.O. Buesseler;M.P. Bacon;H.W. Wang

Frequent Co-Authors

Neil H. Landman
Neil H. Landman American Museum of Natural History
Jordi Garcia-Orellana
Jordi Garcia-Orellana Autonomous University of Barcelona
Robert C. Aller
Robert C. Aller Stony Brook University
Karl K. Turekian
Karl K. Turekian Yale University
Cindy Lee
Cindy Lee Stony Brook University
Scott W. Fowler
Scott W. Fowler International Atomic Energy Agency
Ken O. Buesseler
Ken O. Buesseler Woods Hole Oceanographic Institution
Pere Masqué
Pere Masqué Edith Cowan University
Matthew A. Charette
Matthew A. Charette Woods Hole Oceanographic Institution
Michael P. Bacon
Michael P. Bacon Woods Hole Oceanographic Institution

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By earning a library science degree, Earth Science graduates can specialize in managing scientific archives or digital databases, supporting research and knowledge dissemination across environmental sectors.

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