The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Environmental Chemistry
Environmental Engineering
Environmental Organic Chemistry
PFAS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,689
15,677
0.723
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Civil Engineering
Geotechnical Engineering
Soil Mechanics
Computational Geomechanics
Slope
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,342
10,259
0.440
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
environmental engineering
environmental chemistry
PFAS
HALT
resource recovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,778
7,762
0.607
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
groundwater hydrology
hydrogeophysics
watershed hydrology
critical zone science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,154
4,118
0.576
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
hydrology
wildfire
urbanization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,425
3,747
0.583
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
hydrology
hydrogeology
groundwater
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,246
3,713
0.362
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Groundwater hydrology
environmental engineering and science
porous media flow and transport
subsurface remediation
modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,234
3,599
0.352
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
hydrology
stormwater green infrastructure
watersheds
groundwater transport and remediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,782
3,560
0.457
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
Completions
Stimulation
Hydraulic Fracturing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,196
3,128
0.602
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
structural engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,446
3,080
0.693
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Environmental Engineering
Environmental Microbiology
Biogeochemistry
Hydrology
Geomicrobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,784
2,068
0.432
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
Water reclamation and reuse
onsite and decentralized systems
soil and groundwater remediation
in situ chemical oxidation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,771
2,057
0.265
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Multiphase Flow
EOR
Thermodynamics/Compositional Simulation
Hydraulic Fracturing & Geothermal
CO2 Sequestration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,473
1,806
0.730
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
environmental engineering microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,366
988
0.418
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
steel
electron microscopy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,687
782
0.291
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
Greenhouse gas emissions
Contaminant transport in porous media
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
807
566
0.701
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
Hydrology
biogeochemistry
microbial ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
616
318
0.516
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Experiential Learning
Engineering Education
Agricultural Water Management
Stream Restoration
Fisheries
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
563
275
0.488
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Computational Seismology
Earthquake Engineering
Civil Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
124
90
0.726
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
civil engineering
structural engineering
lunar construction
in-situ resource utilization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Chris Higgins
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,689
15,677
0.723
Environmental Chemistry
Environmental Engineering
Environmental Organic Chemistry
PFAS
Dv Griffiths
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,342
10,259
0.440
Civil Engineering
Geotechnical Engineering
Soil Mechanics
Computational Geomechanics
Slope
Timothy J Strathmann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,778
7,762
0.607
environmental engineering
environmental chemistry
PFAS
HALT
resource recovery
Kamini Singha
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,154
4,118
0.576
groundwater hydrology
hydrogeophysics
watershed hydrology
critical zone science
Terri Hogue
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,425
3,747
0.583
hydrology
wildfire
urbanization
David A Benson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,246
3,713
0.362
hydrology
hydrogeology
groundwater
Tissa Illangasekare
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,234
3,599
0.352
Groundwater hydrology
environmental engineering and science
porous media flow and transport
subsurface remediation
modeling
John Mccray
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,782
3,560
0.457
hydrology
stormwater green infrastructure
watersheds
groundwater transport and remediation
Jennifer Miskimins
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,196
3,128
0.602
Completions
Stimulation
Hydraulic Fracturing
Shiling Pei
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,446
3,080
0.693
Jonathan O Sharp
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,784
2,068
0.432
Environmental Engineering
Environmental Microbiology
Biogeochemistry
Hydrology
Geomicrobiology
Robert L Siegrist
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,771
2,057
0.265
Water reclamation and reuse
onsite and decentralized systems
soil and groundwater remediation
in situ chemical oxidation
Tadesse Weldu Teklu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,473
1,806
0.730
Multiphase Flow
EOR
Thermodynamics/Compositional Simulation
Hydraulic Fracturing & Geothermal
CO2 Sequestration
Junko Munakata Marr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,366
988
0.418
environmental engineering microbiology
Steven W Thompson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,687
782
0.291
steel
electron microscopy
Chamindu Deepagoda Tkk
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
807
566
0.701
Greenhouse gas emissions
Contaminant transport in porous media
Kristin Mikkelson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
616
318
0.516
Hydrology
biogeochemistry
microbial ecology
Kristoph Dietrich Kinzli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
563
275
0.488
Experiential Learning
Engineering Education
Agricultural Water Management
Stream Restoration
Fisheries
* Last 6 Years Citation Counts Rankings
Andrea C Riaño
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
124
90
0.726
Computational Seismology
Earthquake Engineering
Civil Engineering
* Last 6 Years Citation Counts Rankings
Ian E Jehn|Ian Jehn
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
civil engineering
structural engineering
lunar construction
in-situ resource utilization