World's Best Scientists 2026 revealed!
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Earth Science
India
2026

D-Index & Metrics

Earth Science

D-Index
50
Citations
8071
World Ranking
3464
National Ranking
11

Ashok Kumar Singh 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 Ashok Kumar Singh 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+

This scientist: 200 publications — 61st percentile

61% of scientists in this discipline score the same or lower.

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

Ashok Kumar Singh 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 Ashok Kumar Singh 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+

This scientist: 50 D-Index — 56th percentile

56% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Earth Science in India Leader Award

Overview

Ashok Kumar Singh is affiliated with the Council of Scientific and Industrial Research in India. Their research primarily focuses on Environmental Science with a total of 54 publications in the field. Within this main area, their work extends to several subfields including Geochemistry and Petrology, Water Science and Technology, Pollution, Environmental Chemistry, and Environmental Engineering.

The scientist has contributed extensively to topics such as Groundwater and Isotope Geochemistry, Heavy Metals in Environment, Water Quality and Pollution Assessment, Mine Drainage and Remediation Techniques, Radioactivity and Radon Measurements, Geochemistry and Geologic Mapping, and Groundwater and Watershed Analysis.

Frequent co-authors collaborating with Ashok Kumar Singh include:

  • Mukesh Kumar Mahato
  • Soma Giri
  • Ashwani Kumar Tiwari
  • Abhishek Pandey Bharat
  • Santanu Bhattacharjee

The scientist's publications often appear in specific journals related to environmental and analytical chemistry, environmental science, and ecological risk assessment. Frequent publication venues include:

  • International Journal of Environmental & Analytical Chemistry
  • Environmental Science and Pollution Research
  • International Journal for Research in Applied Science and Engineering Technology
  • Human and Ecological Risk Assessment An International Journal
  • Environmental Geochemistry and Health

Recent papers authored or co-authored by Ashok Kumar Singh address diverse environmental challenges and include:

  • "Hydrogeochemistry and quality assessment of surface and sub-surface water resources in Raniganj coalfield area, Damodar Valley, India" (2020) published in International Journal of Environmental & Analytical Chemistry
  • "Non-carcinogenic health risk assessment for fluoride and nitrate in the groundwater of the mica belt of Jharkhand, India" (2021) published in Human and Ecological Risk Assessment An International Journal
  • "Development of a new noncarcinogenic heavy metal pollution index for quality ranking of vegetable, rice, and milk" (2020) published in Ecological Indicators
  • "Spatio-temporal variations of metals in groundwater from an iron mining impacted area: Assessing sources and human health risk" (2023) published in Total Environment Research Themes
  • "Anthropogenic arsenic menace in contaminated water near thermal power plants and coal mining areas of India" (2021) published in Environmental Geochemistry and Health

Best Publications

  • Grain size and geochemical partitioning of heavy metals in sediments of the Damodar River – a tributary of the lower Ganga, India

    A. K. Singh;S. I. Hasnain;D. K. Banerjee

  • Major ion chemistry, weathering processes and water quality assessment in upper catchment of Damodar River basin, India

    Abhay Kumar Singh;G. C. Mondal;Suresh Kumar;T. B. Singh

  • Hydrogeochemical investigation and groundwater quality assessment of Pratapgarh district, Uttar Pradesh

    Ashwani Kumar Tiwari;Abhay Kumar Singh

  • Human health risk assessment via drinking water pathway due to metal contamination in the groundwater of Subarnarekha River Basin, India

    Soma Giri;Abhay Kumar Singh

  • Evaluation of groundwater quality in the Chotanagpur plateau region of the Subarnarekha river basin, Jharkhand State, India

    Sandeep Kumar Gautam;Chinmaya Maharana;Divya Sharma;Abhay K. Singh

  • Microwave synthesis of silver nanofluids with polyvinylpyrrolidone (PVP) and their transport properties

    Ashok K. Singh;Vijay S. Raykar

  • Assessment of Surface Water Quality Using Heavy Metal Pollution Index in Subarnarekha River, India

    Soma Giri;Abhay Kumar Singh

  • Major ion chemistry and weathering control in a high altitude basin : Alaknanda River, Garhwal Himalaya, India

    Abhay Kumar Singh;Syed I. Hasnain

  • Hydrochemistry and Quality Assessment of Groundwater in Naini Industrial Area, Allahabad District, Uttar Pradesh

    Rahul Mohan;Abhay Kumar Singh;Jayant K. Tripathi;G. C. Chowdhary

  • Hydrogeochemical analysis and evaluation of surface water quality of Pratapgarh district, Uttar Pradesh, India

    Ashwani Kumar Tiwari;Ashwani Kumar Tiwari;Abhay Kumar Singh;Amit Kumar Singh;M. P. Singh

  • Quality Assessment of Mine Water in the Raniganj Coalfield Area, India

    Abhay Kumar Singh;Mukesh K. Mahato;Babita Neogi;K. K. Singh

  • Hydrochemistry of reservoirs of Damodar River basin, India: weathering processes and water quality assessment

    Abhay Kumar Singh;G.C. Mondal;Prasoon Kumar Singh;Siddharth Singh

  • The atmospheric global electric circuit : An overview

    Devendraa Siingh;Devendraa Siingh;V. Gopalakrishnan;R.P. Singh;A.K. Kamra

  • Evaluation of hydrogeochemical processes and groundwater quality in the Jhansi district of Bundelkhand region, India

    Abhay Kumar Singh;Beenu Raj;Beenu Raj;Ashwani K. Tiwari;Mukesh K. Mahato

  • Intra-urban variability of particulate matter (PM2.5 and PM10) and its relationship with optical properties of aerosols over Delhi, India

    Suresh Tiwari;Philip K. Hopke;Atar S. Pipal;Atul K. Srivastava

  • A new approach for indexing groundwater heavy metal pollution

    Aaditya Chaturvedi;Aaditya Chaturvedi;Santanu Bhattacharjee;Abhay Kumar Singh;Vipin Kumar

  • Estimation of Heavy Metal Contamination in Groundwater and Development of a Heavy Metal Pollution Index by Using GIS Technique

    Ashwani Kumar Tiwari;Ashwani Kumar Tiwari;Prasoon Kumar Singh;Abhay Kumar Singh;Marina De Maio

  • Environmental geochemistry and quality assessment of mine water of Jharia coalfield, India

    Abhay Kumar Singh;M. K. Mahato;B. Neogi;B. K. Tewary

  • Water quality of the Chhoti Gandak River using principal component analysis, Ganga Plain, India

    Vikram Bhardwaj;Dhruv Sen Singh;A K Singh

  • Environmental geochemistry of Damodar River basin, east coast of India

    A. K. Singh;S. I. Hasnain

Frequent Co-Authors

Suresh Tiwari
Suresh Tiwari Indian Institute of Tropical Meteorology
Atul Kumar Srivastava
Atul Kumar Srivastava Indian Institute of Tropical Meteorology
Ramesh P. Singh
Ramesh P. Singh Chapman University
Deewan Singh Bisht
Deewan Singh Bisht Indian Institute of Tropical Meteorology
Sudhir Kumar Singh
Sudhir Kumar Singh University of Allahabad
Ashutosh Tiwari
Ashutosh Tiwari University of Utah
Philip K. Hopke
Philip K. Hopke Clarkson University
Umran S. Inan
Umran S. Inan Stanford University
Shirish H. Sonawane
Shirish H. Sonawane National Institute of Technology Warangal
Dipak V. Pinjari
Dipak V. Pinjari University of Mumbai

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