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Mark A. Engle 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 Mark A. Engle sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

The last bar groups every scientist with 510 publications or more.

Mark A. Engle 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 Mark A. Engle sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

The last bar groups every scientist with 94 D-Index or more.

Overview

Mark A. Engle is affiliated with The University of Texas at El Paso in the United States. Their research spans Environmental Science and Engineering, with a focus on subfields such as Global and Planetary Change, Mechanics of Materials, Artificial Intelligence, Geochemistry and Petrology, and Pollution. The scientist has contributed extensively to studies involving atmospheric and environmental gas dynamics, hydrocarbon exploration and reservoir analysis, geochemistry and geologic mapping, groundwater and isotope geochemistry, coal and its by-products, heavy metals in the environment, and hydraulic fracturing and reservoir analysis.

Their recent publications include:

  • Can we beneficially reuse produced water from oil and gas extraction in the U.S.? (2020, The Science of The Total Environment)
  • Characterization of produced water and surrounding surface water in the Permian Basin, the United States (2022, Journal of Hazardous Materials)
  • Origin and geochemistry of formation waters from the lower Eagle Ford Group, Gulf Coast Basin, south central Texas (2020, Chemical Geology)
  • Utica Shale Play Oil and Gas Brines: Geochemistry and Factors Influencing Wastewater Management (2020, Environmental Science & Technology)
  • Coal elemental (compositional) data analysis with hierarchical clustering algorithms (2021, International Journal of Coal Geology)

Mark A. Engle collaborates frequently with multiple co-authors including Matthew S. Varonka, Aaron M. Jubb, Denise M. Akob, Isabelle M. Cozzarelli, and Douglas B. Kent. These collaborations reflect an interdisciplinary approach bridging environmental chemistry and geosciences.

Publication venues where this scientist has been active include:

  • Abstracts with programs - Geological Society of America
  • The Science of The Total Environment
  • International Journal of Coal Geology
  • Environmental Science & Technology
  • Natural Resources Research

Their research outputs demonstrate consistent engagement with environmental science themes focused on geochemical characterization and environmental impacts related to hydrocarbon extraction and water resource analysis. This body of work contributes to understanding fluid interactions in subsurface environments, waste management, and the environmental consequences of energy resource development.

Best Publications

  • Organic substances in produced and formation water from unconventional natural gas extraction in coal and shale

    William H. Orem;Calin A. Tatu;Matthew S. Varonka;Harry E. Lerch

  • Radium content of oil- and gas-field produced waters in the northern Appalachian Basin (USA): Summary and discussion of data

    E.L. Rowan;M.A. Engle;C.S. Kirby;T.F. Kraemer

  • Hydraulic fracturing water use variability in the United States and potential environmental implications.

    Tanya J. Gallegos;Brian A. Varela;Seth S. Haines;Mark A. Engle;Mark A. Engle

  • Geochemical and isotopic evolution of water produced from Middle Devonian Marcellus shale gas wells, Appalachian basin, Pennsylvania

    Elisabeth L. Rowan;Mark A. Engle;Thomas F. Kraemer;Karl T. Schroeder

  • Quantifying natural source mercury emissions from the Ivanhoe Mining District, north-central Nevada, USA

    Mark A. Engle;Mae Sexauer Gustin;Hong Zhang

  • Can we beneficially reuse produced water from oil and gas extraction in the U.S.

    Bridget R Scanlon;Robert C Reedy;Pei Xu;M Engle

  • Geochemistry of formation waters from the Wolfcamp and “Cline” shales: Insights into brine origin, reservoir connectivity, and fluid flow in the Permian Basin, USA

    Mark A. Engle;Mark A. Engle;Francisco R. Reyes;Matthew S. Varonka;William H. Orem

  • Geochemical evolution of produced waters from hydraulic fracturing of the Marcellus Shale, northern Appalachian Basin: A multivariate compositional data analysis approach

    Mark A. Engle;Mark A. Engle;Elisabeth L. Rowan

  • Environmental signatures and effects of an oil and gas wastewater spill in the Williston Basin, North Dakota.

    Isabelle M. Cozzarelli;Katherine Skalak;D.B. Kent;Mark A. Engle

  • Wastewater Disposal from Unconventional Oil and Gas Development Degrades Stream Quality at a West Virginia Injection Facility

    Denise M. Akob;Adam C. Mumford;William Orem;Mark A. Engle

  • Discharges of produced waters from oil and gas extraction via wastewater treatment plants are sources of disinfection by-products to receiving streams.

    Michelle L. Hladik;Michael J. Focazio;Mark Engle;Mark Engle

  • Atmospheric mercury emissions from mine wastes and surrounding geologically enriched terrains

    M. Sexauer Gustin;M. F. Coolbaugh;M. A. Engle;B. C. Fitzgerald

  • CO2, CO, and Hg emissions from the Truman Shepherd and Ruth Mullins coal fires, eastern Kentucky, USA

    Jennifer M.K. O'Keefe;Kevin R. Henke;James C. Hower;Mark A. Engle

  • Mercury exchange between the atmosphere and low mercury containing substrates

    Mae Sexauer Gustin;Mark Engle;Jody Ericksen;Seth N. Lyman

  • Gas emissions, minerals, and tars associated with three coal fires, Powder River Basin, USA.

    Mark A. Engle;Mark A. Engle;Lawrence F. Radke;Edward L. Heffern;Jennifer M.K. O'Keefe

  • Volatile-organic molecular characterization of shale-oil produced water from the Permian Basin

    Naima A. Khan;Mark A. Engle;Barry Dungan;F. Omar Holguin

  • The influence of ozone on atmospheric emissions of gaseous elemental mercury and reactive gaseous mercury from substrates

    Mark A. Engle;Mae Sexauer Gustin;Steve E. Lindberg;Alan W. Gertler

  • Mercury distribution in two Sierran forest and one desert sagebrush steppe ecosystems and the effects of fire.

    Mark A. Engle;Mae Sexauer Gustin;Dale W. Johnson;James F. Murphy

  • Comparison of atmospheric mercury speciation and deposition at nine sites across central and eastern North America

    Mark A. Engle;Michael T. Tate;David P. Krabbenhoft;James J. Schauer

  • The Tiptop coal-mine fire, Kentucky: Preliminary investigation of the measurement of mercury and other hazardous gases from coal-fire gas vents

    James C. Hower;Kevin R. Henke;Jennifer M.K. O'Keefe;Mark A. Engle

Frequent Co-Authors

William H. Orem
William H. Orem United States Geological Survey
James C. Hower
James C. Hower University of Kentucky
Isabelle M. Cozzarelli
Isabelle M. Cozzarelli United States Geological Survey
David P. Krabbenhoft
David P. Krabbenhoft United States Geological Survey
Mae Sexauer Gustin
Mae Sexauer Gustin University of Nevada Reno
Pei Xu
Pei Xu New Mexico State University
Peter B. McMahon
Peter B. McMahon United States Geological Survey
Lawrence F. Radke
Lawrence F. Radke National Center for Atmospheric Research
Donald R. Blake
Donald R. Blake University of California, Irvine
Fraser Goff
Fraser Goff New Mexico Institute of Mining and Technology

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