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Earth Science
India
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 50 3464 3173 11 9 200 8071

Ashok Kumar Singh publications per year

The chart shows the history of publications by Ashok Kumar Singh between 1974 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ashok Kumar Singh published across 52 years, from 1974 to 2025, averaging 6.9 papers a year. Output peaked at 32 publications in 2010. 21 of the 360 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1974 to 2025. Vertical axis: number of publications, 0 to 32. Peak 32 publications in 2010. 1974: 1 publication 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 1 publication 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 1 publication 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 1 publication 1988: 1 publication 1989: 1 publication 1990: 3 publications 1991: 1 publication 1992: 0 publications 1993: 2 publications 1994: 2 publications 1995: 3 publications 1996: 0 publications 1997: 6 publications 1998: 7 publications 1999: 6 publications 2000: 3 publications 2001: 4 publications 2002: 5 publications 2003: 0 publications 2004: 2 publications 2005: 4 publications 2006: 5 publications 2007: 6 publications 2008: 11 publications 2009: 14 publications 2010: 32 publications 2011: 21 publications 2012: 20 publications 2013: 15 publications 2014: 15 publications 2015: 20 publications 2016: 16 publications 2017: 20 publications 2018: 18 publications 2019: 13 publications 2020: 13 publications 2021: 25 publications 2022: 14 publications 2023: 7 publications 2024: 4 publications 2025: 17 publications
1974 2025

360 publications in total across all disciplines

View publications per year as a table
Ashok Kumar Singh: publications per year, 1974 to 2025
Year Publications
1974 1
1975 0
1976 0
1977 0
1978 1
1979 0
1980 0
1981 0
1982 1
1983 0
1984 0
1985 0
1986 0
1987 1
1988 1
1989 1
1990 3
1991 1
1992 0
1993 2
1994 2
1995 3
1996 0
1997 6
1998 7
1999 6
2000 3
2001 4
2002 5
2003 0
2004 2
2005 4
2006 5
2007 6
2008 11
2009 14
2010 32
2011 21
2012 20
2013 15
2014 15
2015 20
2016 16
2017 20
2018 18
2019 13
2020 13
2021 25
2022 14
2023 7
2024 4
2025 17
Total 360
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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.

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: 200 publications — 63rd percentile

63% 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
198–207 333 200
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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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.

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, 50 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: 50 D-Index — 64th percentile

64% 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 50
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
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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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