The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 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 Jun 17, 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 (1.121.299) 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 Index Rankings
Rankings
112,545
World Rank
444
Country Rank
4
University
Ranking Based On Selection:
1
Engineering & Technology / Marine Sciences and Engineering
Oceanography | Carbon | Climate | Oxygen | Productivit
Oceanography | Carbon | Climate | Oxygen | Productivit
H-Index Metrics
-
H-Index45
-
i10 Index90
-
Citation Counts11,304
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* Total H Index Rankings
Rankings
154,489
World Rank
647
Country Rank
151
University
Ranking Based On Selection:
2
Engineering & Technology / Marine Sciences and Engineering
Ocean modelling | Marine biogeochemistry | Earth System Science | Southern Ocean | sea ic
Ocean modelling | Marine biogeochemistry | Earth System Science | Southern Ocean | sea ic
H-Index Metrics
-
H-Index39
-
i10 Index76
-
Citation Counts7,257
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* Total H Index Rankings
Rankings
177,222
World Rank
429
Country Rank
1
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
214,689
World Rank
592
Country Rank
10
University
Ranking Based On Selection:
4
Engineering & Technology / Marine Sciences and Engineering
Marine Mycology - Molecular Phylogenetics - Marine fungal taxonomy - Marine fungal Ecolog
Marine Mycology - Molecular Phylogenetics - Marine fungal taxonomy - Marine fungal Ecolog
H-Index Metrics
-
H-Index33
-
i10 Index67
-
Citation Counts7,755
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* Total H Index Rankings
Rankings
258,271
World Rank
5
Country Rank
5
University
Ranking Based On Selection:
5
Engineering & Technology / Marine Sciences and Engineering
marine botany | biodiversity | restoration | governanc
marine botany | biodiversity | restoration | governanc
H-Index Metrics
-
H-Index30
-
i10 Index67
-
Citation Counts4,301
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* Total H Index Rankings
Rankings
311,919
World Rank
179
Country Rank
36
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
313,289
World Rank
1,538
Country Rank
19
University
Ranking Based On Selection:
7
Engineering & Technology / Marine Sciences and Engineering
Coastal and estuarine water quality and managemen
Coastal and estuarine water quality and managemen
H-Index Metrics
-
H-Index27
-
i10 Index56
-
Citation Counts2,672
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* Total H Index Rankings
Rankings
316,149
World Rank
477
Country Rank
1
University
Ranking Based On Selection:
8
Engineering & Technology / Marine Sciences and Engineering
Aquaculture | Aquatictoxicology and Ecophysiolog
Aquaculture | Aquatictoxicology and Ecophysiolog
H-Index Metrics
-
H-Index27
-
i10 Index62
-
Citation Counts2,264
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* Total H Index Rankings
Rankings
322,314
World Rank
138
Country Rank
1
University
Ranking Based On Selection:
9
Engineering & Technology / Marine Sciences and Engineering
Oceanography | Remote sensing | Marine Environment | Ecotoxicology | Management and Monitorin
Oceanography | Remote sensing | Marine Environment | Ecotoxicology | Management and Monitorin
H-Index Metrics
-
H-Index26
-
i10 Index68
-
Citation Counts2,869
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* Total H Index Rankings
Rankings
332,868
World Rank
92
Country Rank
10
University
Ranking Based On Selection:
10
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* Total H Index Rankings
Rankings
339,286
World Rank
97
Country Rank
12
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
352,496
World Rank
1,761
Country Rank
4
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
354,785
World Rank
1,327
Country Rank
3
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
357,373
World Rank
218
Country Rank
18
University
Ranking Based On Selection:
14
Engineering & Technology / Marine Sciences and Engineering
organic chemistry | marine natural products | drug and food researc
organic chemistry | marine natural products | drug and food researc
H-Index Metrics
-
H-Index25
-
i10 Index39
-
Citation Counts2,612
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* Total H Index Rankings
Rankings
428,361
World Rank
231
Country Rank
27
University
Ranking Based On Selection:
15
Engineering & Technology / Marine Sciences and Engineering
Plankton Ecology | Biodiversity | Phytoplankton | Oceanography | Ecotoxicolog
Plankton Ecology | Biodiversity | Phytoplankton | Oceanography | Ecotoxicolog
H-Index Metrics
-
H-Index22
-
i10 Index35
-
Citation Counts1,338
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* Total H Index Rankings
Rankings
472,479
World Rank
2,143
Country Rank
66
University
Ranking Based On Selection:
16
Engineering & Technology / Marine Sciences and Engineering
Microbiology | quorum sensing | Marine microorganisms | Biofil
Microbiology | quorum sensing | Marine microorganisms | Biofil
H-Index Metrics
-
H-Index20
-
i10 Index31
-
Citation Counts1,576
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* Total H Index Rankings
Rankings
479,679
World Rank
2,207
Country Rank
18
University
Ranking Based On Selection:
17
Engineering & Technology / Marine Sciences and Engineering
Marine Engineering | Ship Emissions and Fuel Savin
Marine Engineering | Ship Emissions and Fuel Savin
H-Index Metrics
-
H-Index20
-
i10 Index26
-
Citation Counts1,413
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Premium Data
* Total H Index Rankings
Rankings
512,850
World Rank
2,487
Country Rank
133
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
519,958
World Rank
2,548
Country Rank
10
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
522,120
World Rank
2,570
Country Rank
138
University
Ranking Based On Selection:
20
Engineering & Technology / Marine Sciences and Engineering
Marine Engineering | Marine Diesel engines | Energy | Natural gas | Hydroge
Marine Engineering | Marine Diesel engines | Energy | Natural gas | Hydroge
H-Index Metrics
-
H-Index19
-
i10 Index24
-
Citation Counts1,492
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* Total H Index Rankings
Rankings
543,880
World Rank
2,909
Country Rank
49
University
Ranking Based On Selection:
21
Engineering & Technology / Marine Sciences and Engineering
Biological Oceanography | Phytoplankton | Nutrient Limitatio
Biological Oceanography | Phytoplankton | Nutrient Limitatio
H-Index Metrics
-
H-Index18
-
i10 Index24
-
Citation Counts906
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* Total H Index Rankings
Rankings
549,088
World Rank
2,794
Country Rank
9
University
Ranking Based On Selection:
22
Engineering & Technology / Marine Sciences and Engineering
Bioactive compounds fom marine Microorganism
Bioactive compounds fom marine Microorganism
H-Index Metrics
-
H-Index18
-
i10 Index23
-
Citation Counts938
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* Total H Index Rankings
Rankings
551,261
World Rank
2,812
Country Rank
10
University
Ranking Based On Selection:
23
Engineering & Technology / Marine Sciences and Engineering
Desalination | Marine Pollution | Liquid Membrane | Electrocoagulation | Pervaporatio
Desalination | Marine Pollution | Liquid Membrane | Electrocoagulation | Pervaporatio
H-Index Metrics
-
H-Index18
-
i10 Index32
-
Citation Counts1,119
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* Total H Index Rankings
Rankings
562,398
World Rank
2,912
Country Rank
3
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
569,103
World Rank
2,972
Country Rank
12
University
Ranking Based On Selection:
25
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