Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :2
Cari Johnson
Sedimentology
Basin Analysis
Tectonics
Petroleum Geology
Metrics
H-Index
i10 Index
Citation
86
276
27,122
* Rankings
Ranking Based On Selection :3
Gabriel Bowen
paleoclimatology
stable isotope geochemistry
ecology
forensic science
hydrology
Metrics
H-Index
i10 Index
Citation
68
167
19,604
* Rankings
Ranking Based On Selection :4
Robert B Smith
Seismology
geophysics
earthquakes
volcanoes
Yellowstone
Metrics
H-Index
i10 Index
Citation
66
151
16,121
David S Chapman
geophysics
geothermal
plate tectonics
climate change
groundwater
Metrics
H-Index
i10 Index
Citation
57
114
11,408
Michael S Zhdanov
Geophysics
Inverse Theory
Electromagnetic Methods
Exploration Geophysics
Metrics
H-Index
i10 Index
Citation
50
202
14,372
Tyler Faith
Paleoecology
Paleoanthropology
Paleobiology
Taphonomy
Zooarchaeology
Metrics
H-Index
i10 Index
Citation
46
101
5,834
Fan Chi Lin
Seismic interferometry
tomography
surface waves
ambient noise
Metrics
H-Index
i10 Index
Citation
41
69
10,277
* Rankings
Ranking Based On Selection :11
Brian Mcpherson
Sedimentary Basin Analysis
Geologic Carbon Sequestration
Hydrogeology
Heat Flow
Relative Permeability
Metrics
H-Index
i10 Index
Citation
39
96
5,324
* Rankings
Ranking Based On Selection :12
Barbara P Nash
volcanology
mineralogy
igneous petrology
electron microprobe analysis
tephrostratigraphy
Metrics
H-Index
i10 Index
Citation
39
68
5,987
* Rankings
Ranking Based On Selection :13
Randall Irmis
Paleobiology
Paleoecology
Paleontology
Taphonomy
Geochronology
Metrics
H-Index
i10 Index
Citation
38
78
6,430
* Rankings
Ranking Based On Selection :15
Diego P Fernandez
environmental geochemistry
mass-spectrometry
forensics
geochronology
isotope geology
Metrics
H-Index
i10 Index
Citation
32
57
4,126
* Rankings
Ranking Based On Selection :17
Peter C Lippert
Tectonics & Paleogeography
Geochronology applied climate
igneous processes
and ecology &
Metrics
H-Index
i10 Index
Citation
26
41
4,474
* Rankings
Ranking Based On Selection :19
Cari Johnson
Sedimentology
Stratigraphy
Basin Analysis
Petroleum Systems
Tectonics
Metrics
H-Index
i10 Index
Citation
26
39
3,669
* Rankings
Ranking Based On Selection :20
Marie Jackson
Volcanic pozzolans
Cementitious microstructures
Surtseyan volcanism
Environmentally-friendly concretes
Ancient Roman Concret
Metrics
H-Index
i10 Index
Citation
25
40
2,935
* Rankings
Ranking Based On Selection :21
Lowell Miyagi
Rock and Mineral Physics
Rheology at high P-T
Anisotropy
Texture
Metrics
H-Index
i10 Index
Citation
25
37
2,245
Mark A Loewen
Vertebrate Paleontology
Evolutionary Systematics
Stratigraphy
Biogeography
Metrics
H-Index
i10 Index
Citation
24
43
1,950
Amir Allam
seismic tomography
fault zone properties
earthquake mechanics
Metrics
H-Index
i10 Index
Citation
22
35
1,719
Ting Xiao
Geologic CO2 Sequestration
Risk Assessment
Reactive Transport Simulations
Metrics
H-Index
i10 Index
Citation
21
32
1,433
Jamie Farrell
Seismology
Yellowstone
Teton
earthquakes
hotspots
Metrics
H-Index
i10 Index
Citation
21
27
2,238
Barbara P Nash
Igneous petrology
volcanology
mineralogy
electron microprobe analysis
tephra
Metrics
H-Index
i10 Index
Citation
21
51
2,717
Bartlett Sf
geotechnical engineering
earthquake engineering
civil engineering
Metrics
H-Index
i10 Index
Citation
20
34
2,224
Lauren Birgenheier
Sedimentology
stratigraphy
reservoir characterization
unconventional resources
paleoclimate
Metrics
H-Index
i10 Index
Citation
19
25
2,801
Rose M Smith
restoration
biogeochemistry
hydrology
urban ecosystems
Metrics
H-Index
i10 Index
Citation
17
20
2,251
Kathleen Ritterbush
paleoecology
mass extinctions
biomechanics
biomineralization
Metrics
H-Index
i10 Index
Citation
16
21
1,065
Rich Fiorella
climate
stable isotopes
water
hydrology
ecohydrology
Metrics
H-Index
i10 Index
Citation
14
17
1,146
Eric C Edelman
Geomechanics
Porous Media Flow
Carbon Sequestration
Metrics
H-Index
i10 Index
Citation
14
16
671
Juan Carlos De Obeso
Rock Geochemistry
Earth Resources
Carbon Storage
Peridotite
Ophiolites
Metrics
H-Index
i10 Index
Citation
10
10
343
Luanjing Guo
Reactive transport in porous media
hydrogeology
coupled subsurface multiphysics processes
numerical simulations
Metrics
H-Index
i10 Index
Citation
7
6
167
Shahrzad Roshankhah
Geotechnical Engineering
Energy Geo-engineering
Experimental Geomechanics
Computational Geomechanics
Metrics
H-Index
i10 Index
Citation
6
6
155
Kami Mohammadi
Geotechnical Earthquake Engineering
Engineering Seismology
Wave propagation
Metrics
H-Index
i10 Index
Citation
6
5
183
Kaedan O'Brien
Paleoanthropology
Paleoecology
Migration
Seasonality
Kenya
Metrics
H-Index
i10 Index
Citation
5
3
102
David Fairchild Wheatley
Sedimentology
Soft-Sediment Deformation
Geoarchaeology
Planetary Geology
STEM Education
Metrics
H-Index
i10 Index
Citation
4
3
94
James Holt
Machine Learning
Data Science
Geophysics
Time Series Analysis
Digital Signal Processing
Metrics
H-Index
i10 Index
Citation
4
3
93
Kevin A Mendoza
Geophysics
magnetotellurics
Ambient Seismic Noise
Tomography
Metrics
H-Index
i10 Index
Citation
4
3
76
Zhidi Wu
Geologic H2 generation and storage
Geologic Carbon Sequestration
Metrics
H-Index
i10 Index
Citation
4
3
60
Casey Meirovitz
Geology
Reservoir Modeling
Hydrogeology
Well Test Analysis
Metrics
H-Index
i10 Index
Citation
4
2
38
Deljo Davis
Isotope Geochemistry and Environmental Geosciences
Hydrogeology
Hydrochemistry
establishing monitoring stations
Radon in wat
Metrics
H-Index
i10 Index
Citation
3
1
42
Ellen J Reat
sedimentology
stratigraphy
geochronology
tectonics
basin analysis
Metrics
H-Index
i10 Index
Citation
2
2
101
Rankings
Ranking Based On Selection: 1
Thure Cerling
Metrics
H-Index
i10 Index
Citation Counts
106
267
44,973
Rankings
Ranking Based On Selection: 2
Cari Johnson
Metrics
H-Index
i10 Index
Citation Counts
86
276
27,122
Sedimentology
Basin Analysis
Tectonics
Petroleum Geology
Rankings
Ranking Based On Selection: 3
Gabriel Bowen
Metrics
H-Index
i10 Index
Citation Counts
68
167
19,604
paleoclimatology
stable isotope geochemistry
ecology
forensic science
hydrology
Rankings
Ranking Based On Selection: 4
Robert B Smith
Metrics
H-Index
i10 Index
Citation Counts
66
151
16,121
Seismology
geophysics
earthquakes
volcanoes
Yellowstone
Rankings
Ranking Based On Selection: 5
David S Chapman
Metrics
H-Index
i10 Index
Citation Counts
57
114
11,408
geophysics
geothermal
plate tectonics
climate change
groundwater
Rankings
Ranking Based On Selection: 6
Michael S Zhdanov
Metrics
H-Index
i10 Index
Citation Counts
50
202
14,372
Geophysics
Inverse Theory
Electromagnetic Methods
Exploration Geophysics
Rankings
Ranking Based On Selection: 7
Tyler Faith
Metrics
H-Index
i10 Index
Citation Counts
46
101
5,834
Paleoecology
Paleoanthropology
Paleobiology
Taphonomy
Zooarchaeology
Rankings
Ranking Based On Selection: 8
Keith D Koper
Metrics
H-Index
i10 Index
Citation Counts
42
87
5,740
Rankings
Ranking Based On Selection: 9
Fan Chi Lin
Metrics
H-Index
i10 Index
Citation Counts
41
69
10,277
Seismic interferometry
tomography
surface waves
ambient noise
Rankings
Ranking Based On Selection: 10
AA Ekdale
Metrics
H-Index
i10 Index
Citation Counts
41
83
8,358
Rankings
Ranking Based On Selection: 11
Brian Mcpherson
Metrics
H-Index
i10 Index
Citation Counts
39
96
5,324
Sedimentary Basin Analysis
Geologic Carbon Sequestration
Hydrogeology
Heat Flow
Relative Permeability
Rankings
Ranking Based On Selection: 12
Barbara P Nash
Metrics
H-Index
i10 Index
Citation Counts
39
68
5,987
volcanology
mineralogy
igneous petrology
electron microprobe analysis
tephrostratigraphy
Rankings
Ranking Based On Selection: 13
Randall Irmis
Metrics
H-Index
i10 Index
Citation Counts
38
78
6,430
Paleobiology
Paleoecology
Paleontology
Taphonomy
Geochronology
Rankings
Ranking Based On Selection: 14
Jeffrey R Moore
Metrics
H-Index
i10 Index
Citation Counts
33
57
3,798
Rankings
Ranking Based On Selection: 15
Diego P Fernandez
Metrics
H-Index
i10 Index
Citation Counts
32
57
4,126
environmental geochemistry
mass-spectrometry
forensics
geochronology
isotope geology
Rankings
Ranking Based On Selection: 16
Brenda B Bowen
Metrics
H-Index
i10 Index
Citation Counts
27
40
2,872
Rankings
Ranking Based On Selection: 17
Peter C Lippert
Metrics
H-Index
i10 Index
Citation Counts
26
41
4,474
Tectonics & Paleogeography
Geochronology applied climate
igneous processes
and ecology &
Rankings
Ranking Based On Selection: 18
Kathleen Nicoll
Metrics
H-Index
i10 Index
Citation Counts
26
41
2,497
Rankings
Ranking Based On Selection: 19
Cari Johnson
Metrics
H-Index
i10 Index
Citation Counts
26
39
3,669
Sedimentology
Stratigraphy
Basin Analysis
Petroleum Systems
Tectonics
Rankings
Ranking Based On Selection: 20
Marie Jackson
Metrics
H-Index
i10 Index
Citation Counts
25
40
2,935
Volcanic pozzolans
Cementitious microstructures
Surtseyan volcanism
Environmentally-friendly concretes
Ancient Roman Concret
Rankings
Ranking Based On Selection: 21
Lowell Miyagi
Metrics
H-Index
i10 Index
Citation Counts
25
37
2,245
Rock and Mineral Physics
Rheology at high P-T
Anisotropy
Texture
Rankings
Ranking Based On Selection: 22
Kris Pankow
Metrics
H-Index
i10 Index
Citation Counts
24
60
2,738
Rankings
Ranking Based On Selection: 23
Mark A Loewen
Metrics
H-Index
i10 Index
Citation Counts
24
43
1,950
Vertebrate Paleontology
Evolutionary Systematics
Stratigraphy
Biogeography
Rankings
Ranking Based On Selection: 24
Richard Esser
Metrics
H-Index
i10 Index
Citation Counts
23
35
1,800
Rankings
Ranking Based On Selection: 25
Amir Allam
Metrics
H-Index
i10 Index
Citation Counts
22
35
1,719
seismic tomography
fault zone properties
earthquake mechanics
Rankings
Ranking Based On Selection: 26
Ting Xiao
Metrics
H-Index
i10 Index
Citation Counts
21
32
1,433
Geologic CO2 Sequestration
Risk Assessment
Reactive Transport Simulations
Rankings
Ranking Based On Selection: 27
Jamie Farrell
Metrics
H-Index
i10 Index
Citation Counts
21
27
2,238
Seismology
Yellowstone
Teton
earthquakes
hotspots
Rankings
Ranking Based On Selection: 28
Luis Ibarra
Metrics
H-Index
i10 Index
Citation Counts
21
33
5,412
Rankings
Ranking Based On Selection: 29
Barbara P Nash
Metrics
H-Index
i10 Index
Citation Counts
21
51
2,717
Igneous petrology
volcanology
mineralogy
electron microprobe analysis
tephra
Rankings
Ranking Based On Selection: 30
Wei Jia
Metrics
H-Index
i10 Index
Citation Counts
20
26
1,388
Rankings
Ranking Based On Selection: 31
Bartlett Sf
Metrics
H-Index
i10 Index
Citation Counts
20
34
2,224
geotechnical engineering
earthquake engineering
civil engineering
Rankings
Ranking Based On Selection: 32
Lauren Birgenheier
Metrics
H-Index
i10 Index
Citation Counts
19
25
2,801
Sedimentology
stratigraphy
reservoir characterization
unconventional resources
paleoclimate
Rankings
Ranking Based On Selection: 33
Paul Jewell
Metrics
H-Index
i10 Index
Citation Counts
18
28
1,131
Rankings
Ranking Based On Selection: 34
Rose M Smith
Metrics
H-Index
i10 Index
Citation Counts
17
20
2,251
restoration
biogeochemistry
hydrology
urban ecosystems
Rankings
Ranking Based On Selection: 35
Kathleen Ritterbush
Metrics
H-Index
i10 Index
Citation Counts
16
21
1,065
paleoecology
mass extinctions
biomechanics
biomineralization
Rankings
Ranking Based On Selection: 36
Rich Fiorella
Metrics
H-Index
i10 Index
Citation Counts
14
17
1,146
climate
stable isotopes
water
hydrology
ecohydrology
Rankings
Ranking Based On Selection: 37
Eric C Edelman
Metrics
H-Index
i10 Index
Citation Counts
14
16
671
Geomechanics
Porous Media Flow
Carbon Sequestration
Rankings
Ranking Based On Selection: 38
Hao Zhang
Metrics
H-Index
i10 Index
Citation Counts
12
14
493
Rankings
Ranking Based On Selection: 39
Scott Miller
Metrics
H-Index
i10 Index
Citation Counts
10
10
737
Rankings
Ranking Based On Selection: 40
Juan Carlos De Obeso
Metrics
H-Index
i10 Index
Citation Counts
10
10
343
Rock Geochemistry
Earth Resources
Carbon Storage
Peridotite
Ophiolites
Rankings
Ranking Based On Selection: 41
Surya Pachhai
Metrics
H-Index
i10 Index
Citation Counts
9
9
264
Rankings
Ranking Based On Selection: 42
Brendon J Quirk
Metrics
H-Index
i10 Index
Citation Counts
7
6
169
Rankings
Ranking Based On Selection: 43
Riley Finnegan
Metrics
H-Index
i10 Index
Citation Counts
7
6
137
Rankings
Ranking Based On Selection: 44
Emily Morton
Metrics
H-Index
i10 Index
Citation Counts
7
6
116
Rankings
Ranking Based On Selection: 45
Luanjing Guo
Metrics
H-Index
i10 Index
Citation Counts
7
6
167
Reactive transport in porous media
hydrogeology
coupled subsurface multiphysics processes
numerical simulations
Rankings
Ranking Based On Selection: 46
Shahrzad Roshankhah
Metrics
H-Index
i10 Index
Citation Counts
6
6
155
Geotechnical Engineering
Energy Geo-engineering
Experimental Geomechanics
Computational Geomechanics
Rankings
Ranking Based On Selection: 47
Kami Mohammadi
Metrics
H-Index
i10 Index
Citation Counts
6
5
183
Geotechnical Earthquake Engineering
Engineering Seismology
Wave propagation
Rankings
Ranking Based On Selection: 48
Jeremiah Bernau
Metrics
H-Index
i10 Index
Citation Counts
5
5
124
Rankings
Ranking Based On Selection: 49
Kaedan O'Brien
Metrics
H-Index
i10 Index
Citation Counts
5
3
102
Paleoanthropology
Paleoecology
Migration
Seasonality
Kenya
Rankings
Ranking Based On Selection: 50
David Fairchild Wheatley
Metrics
H-Index
i10 Index
Citation Counts
4
3
94
Sedimentology
Soft-Sediment Deformation
Geoarchaeology
Planetary Geology
STEM Education
Rankings
Ranking Based On Selection: 51
James Holt
Metrics
H-Index
i10 Index
Citation Counts
4
3
93
Machine Learning
Data Science
Geophysics
Time Series Analysis
Digital Signal Processing
Rankings
Ranking Based On Selection: 52
Kevin A Mendoza
Metrics
H-Index
i10 Index
Citation Counts
4
3
76
Geophysics
magnetotellurics
Ambient Seismic Noise
Tomography
Rankings
Ranking Based On Selection: 53
Zhidi Wu
Metrics
H-Index
i10 Index
Citation Counts
4
3
60
Geologic H2 generation and storage
Geologic Carbon Sequestration
Rankings
Ranking Based On Selection: 54
Casey Meirovitz
Metrics
H-Index
i10 Index
Citation Counts
4
2
38
Geology
Reservoir Modeling
Hydrogeology
Well Test Analysis
Rankings
Ranking Based On Selection: 55
Yadong Wang
Metrics
H-Index
i10 Index
Citation Counts
3
3
183
Rankings
Ranking Based On Selection: 56
Alena Grechishnikova
Metrics
H-Index
i10 Index
Citation Counts
3
2
55
geophysics
unconventional reservoirs
modeling
energy
Rankings
Ranking Based On Selection: 57
Hamid Sadeghpour
Metrics
H-Index
i10 Index
Citation Counts
3
1
52
Geotechnics
Geosynthetics
Reinforced Soil
CFRP
Rankings
Ranking Based On Selection: 58
Kevin L Mccormack
Metrics
H-Index
i10 Index
Citation Counts
3
1
36
Rankings
Ranking Based On Selection: 59
Deljo Davis
Metrics
H-Index
i10 Index
Citation Counts
3
1
42
Isotope Geochemistry and Environmental Geosciences
Hydrogeology
Hydrochemistry
establishing monitoring stations
Radon in wat
Rankings
Ranking Based On Selection: 60
Ellen J Reat
Metrics
H-Index
i10 Index
Citation Counts
2
2
101
sedimentology
stratigraphy
geochronology
tectonics
basin analysis
Rankings
Ranking Based On Selection: 61
Hyejeong Kim
Metrics
H-Index
i10 Index
Citation Counts
2
2
33
Rankings
Ranking Based On Selection: 62
Konstantinos Gkogkas
Metrics
H-Index
i10 Index
Citation Counts
2
2
26
Rankings
Ranking Based On Selection: 63
Santiago Rabade
Metrics
H-Index
i10 Index
Citation Counts
2
0
9
Rankings
Ranking Based On Selection: 64
Richard Boakye Yiadom
Metrics
H-Index
i10 Index
Citation Counts
1
1
22
Rankings
Ranking Based On Selection: 65
Yao Yao
Metrics
H-Index
i10 Index
Citation Counts
1
1
19
Rankings
Ranking Based On Selection: 66
Chantelle Kiessner
Metrics
H-Index
i10 Index
Citation Counts
1
1
15
Rankings
Ranking Based On Selection: 67
Qicheng Zeng
Metrics
H-Index
i10 Index
Citation Counts
1
0
4