The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 30, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (873.690) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
planet imaging
stellar astrophysics
interstellar medium
Metrics
H-Index
i10 Index
Citation Counts
137
382
130,515
* Total H IndexRankings
Ranking Based On Selection: 2
oceanography
Metrics
H-Index
i10 Index
Citation Counts
119
259
71,637
* Total H IndexRankings
Ranking Based On Selection: 3
Climate Change - Physcial Science
Impacts and Risks
Public Policy
Metrics
H-Index
i10 Index
Citation Counts
91
227
54,484
* Total H IndexRankings
Ranking Based On Selection: 4
Seismology
Metrics
H-Index
i10 Index
Citation Counts
73
188
25,952
* Total H IndexRankings
Ranking Based On Selection: 5
Geophysics
high-pressure research
materials science
Metrics
H-Index
i10 Index
Citation Counts
70
176
13,998
* Total H IndexRankings
Ranking Based On Selection: 6
geoscience
geochemistry
geochronology
geology
tectonics
Metrics
H-Index
i10 Index
Citation Counts
56
84
16,980
* Total H IndexRankings
Ranking Based On Selection: 7
metamorphic petrology
tectonics
Metrics
H-Index
i10 Index
Citation Counts
53
84
10,790
* Total H IndexRankings
Ranking Based On Selection: 8
planetary science
origins of life
electrodynamics
nuclear nonproliferation and arms control
biological security
Metrics
H-Index
i10 Index
Citation Counts
47
85
10,913
* Total H IndexRankings
Ranking Based On Selection: 9
geology
geophysics
geochemistry
earth
Metrics
H-Index
i10 Index
Citation Counts
44
74
9,677
* Total H IndexRankings
Ranking Based On Selection: 10
Geochemistry
Environmental Chemistry
Clay Minerals
Mineral-Water Interfaces
Soft Earth Geophysics
Metrics
H-Index
i10 Index
Citation Counts
43
57
5,940
* Total H IndexRankings
Ranking Based On Selection: 11
geochemistry
carbon cycle
carbonate chemistry
stable isotopes
Metrics
H-Index
i10 Index
Citation Counts
42
70
6,710
* Total H IndexRankings
Ranking Based On Selection: 12
Geophysics
Metrics
H-Index
i10 Index
Citation Counts
39
68
6,082
* Total H IndexRankings
Ranking Based On Selection: 13
Microbial Biogeochemistry
Environmental Microbiology
Geobiology
Metrics
H-Index
i10 Index
Citation Counts
21
26
3,450
* Total H IndexRankings
Ranking Based On Selection: 14
geochemistry
geology
diagenesis
paleoclimate
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,238
* Total H IndexRankings
Ranking Based On Selection: 15
microbial oceanography
biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
14
15
636
* Total H IndexRankings
Ranking Based On Selection: 16
earth surface processes
granular materials
geophysics
friction
fault mechanics
Metrics
H-Index
i10 Index
Citation Counts
13
14
754
* Total H IndexRankings
Ranking Based On Selection: 17
Biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
8
8
131
* Total H IndexRankings
Ranking Based On Selection: 18
Microbial ecology
Biogeochemistry
Geomicrobiology
Metrics
H-Index
i10 Index
Citation Counts
7
7
235
* Total H IndexRankings
Ranking Based On Selection: 19
Geochronology
Paleontology
Evolution
Metrics
H-Index
i10 Index
Citation Counts
7
5
139
* Total H IndexRankings
Ranking Based On Selection: 20
sedimentology
carbonates
dolomite
Earth history
Metrics
H-Index
i10 Index
Citation Counts
6
2
204
* Total H IndexRankings
Ranking Based On Selection: 21
Ancient-ocean chemistry
paleoclimatology
low-temperature geochemistry
Metrics
H-Index
i10 Index
Citation Counts
5
3
58
* Total H IndexRankings
Ranking Based On Selection: 22
Computational Mechanics
Geomechanics
Earthquake
Machine Learning
Metrics
H-Index
i10 Index
Citation Counts
5
1
58
* Total H IndexRankings
Ranking Based On Selection: 23
Space Science
Geophysics
Solar Physics
Space Weather
Metrics
H-Index
i10 Index
Citation Counts
5
2
76
* Total H IndexRankings
Ranking Based On Selection: 24
Geophyiscs
Metrics
H-Index
i10 Index
Citation Counts
4
4
121
* Total H IndexRankings
Ranking Based On Selection: 25
Environmental Chemistry
Geochemistry
Organic Contaminants
Clay Minerals
Metrics
H-Index
i10 Index
Citation Counts
4
3
156
Gillian Knapp
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
137
382
130,515
planet imaging
stellar astrophysics
interstellar medium
Jorge L Sarmiento
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
119
259
71,637
Michael Oppenheimer
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
91
227
54,484
Climate Change - Physcial Science
Impacts and Risks
Public Policy
Jeroen Tromp
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
73
188
25,952
Thomas Duffy
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
70
176
13,998
Geophysics
high-pressure research
materials science
Blair Schoene
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
56
84
16,980
geoscience
geochemistry
geochronology
geology
tectonics
Lincoln S Hollister
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
53
84
10,790
metamorphic petrology
tectonics
Christopher Chyba
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
47
85
10,913
planetary science
origins of life
electrodynamics
nuclear nonproliferation and arms control
biological security
Adam C Maloof
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
44
74
9,677
geology
geophysics
geochemistry
earth
Ian Bourg
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
43
57
5,940
Geochemistry
Environmental Chemistry
Clay Minerals
Mineral-Water Interfaces
Soft Earth Geophysics
John Andrew Higgins
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
42
70
6,710
geochemistry
carbon cycle
carbonate chemistry
stable isotopes
Frederik J Simons
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
39
68
6,082
Xinning Zhang
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
21
26
3,450
Microbial Biogeochemistry
Environmental Microbiology
Geobiology
Anne Sofie C Ahm
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
16
18
1,238
geochemistry
geology
diagenesis
paleoclimate
Nicolas Van Oostende
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
14
15
636
microbial oceanography
biogeochemistry
Behrooz Ferdowsi
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
13
14
754
earth surface processes
granular materials
geophysics
friction
fault mechanics
Emma Bertran
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
8
8
131
Linta Reji
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
7
7
235
Microbial ecology
Biogeochemistry
Geomicrobiology
Noe-Heon Kim
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
7
5
139
Geochronology
Paleontology
Evolution
Julia Wilcots
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
6
2
204
sedimentology
carbonates
dolomite
Earth history
Mebrahtu F Weldeghebriel
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
5
3
58
Ancient-ocean chemistry
paleoclimatology
low-temperature geochemistry
Xiaoyu Wang
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
5
1
58
Computational Mechanics
Geomechanics
Earthquake
Machine Learning
Nirakar Sapkota
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
5
2
76
Space Science
Geophysics
Solar Physics
Space Weather
Yajun Peng
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
4
4
121
Jennifer Willemsen
Princeton University
Princeton, United States
Metrics
H-Index
i10-Index
Citation Counts
4
3
156
Environmental Chemistry
Geochemistry
Organic Contaminants
Clay Minerals