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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 5 years. As of Jan 06, 2026, 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 (1.131.911) 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
132,568
World Rank
39
Country Rank
1
University
Ranking Based On Selection:
1
Engineering & Technology / Marine Sciences and Engineering
Climate dynamics | El Niño | Ocean-atmosphere interaction
Climate dynamics | El Niño | Ocean-atmosphere interaction
H-Index Metrics
-
H-Index43
-
i10 Index72
-
Citation Counts12,111
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* Total H Index Rankings
Rankings
361,926
World Rank
183
Country Rank
12
University
Ranking Based On Selection:
2
Engineering & Technology / Marine Sciences and Engineering
Marine ecology | Conservation Biology | Seabird
Marine ecology | Conservation Biology | Seabird
H-Index Metrics
-
H-Index26
-
i10 Index39
-
Citation Counts1,894
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* Total H Index Rankings
Rankings
429,040
World Rank
239
Country Rank
1
University
Ranking Based On Selection:
3
Engineering & Technology / Marine Sciences and Engineering
Coastal Oceanography | Ecosystem Base Management | ICT | Marine Debri
Coastal Oceanography | Ecosystem Base Management | ICT | Marine Debri
H-Index Metrics
-
H-Index23
-
i10 Index28
-
Citation Counts3,798
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* Total H Index Rankings
Rankings
576,639
World Rank
429
Country Rank
4
University
Ranking Based On Selection:
4
Engineering & Technology / Marine Sciences and Engineering
numerical modelling | hydrodynamics | stratification/mixing processes | estuarine and coastal circulation | eastern boundary upwell
numerical modelling | hydrodynamics | stratification/mixing processes | estuarine and coastal circulation | eastern boundary upwell
H-Index Metrics
-
H-Index18
-
i10 Index21
-
Citation Counts4,363
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Premium Data
* Total H Index Rankings
Rankings
580,133
World Rank
434
Country Rank
2
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
661,558
World Rank
559
Country Rank
51
University
Ranking Based On Selection:
6
Engineering & Technology / Marine Sciences and Engineering
marine ecology | population dynamics | trophic ecology | conservatio
marine ecology | population dynamics | trophic ecology | conservatio
H-Index Metrics
-
H-Index16
-
i10 Index27
-
Citation Counts786
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* Total H Index Rankings
Rankings
706,220
World Rank
649
Country Rank
57
University
Ranking Based On Selection:
7
Engineering & Technology / Marine Sciences and Engineering
Vertebrate Paleontology | Morphology | Paleoecology | Marine mammals | Seabird
Vertebrate Paleontology | Morphology | Paleoecology | Marine mammals | Seabird
H-Index Metrics
-
H-Index15
-
i10 Index17
-
Citation Counts784
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* Total H Index Rankings
Rankings
742,478
World Rank
719
Country Rank
64
University
Ranking Based On Selection:
8
Engineering & Technology / Marine Sciences and Engineering
geochemistry | mangroves | oceanography | carbon stocks | organic matter
geochemistry | mangroves | oceanography | carbon stocks | organic matter
H-Index Metrics
-
H-Index14
-
i10 Index19
-
Citation Counts661
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Premium Data
* Total H Index Rankings
Rankings
760,448
World Rank
746
Country Rank
6
University
Ranking Based On Selection:
9
Engineering & Technology / Marine Sciences and Engineering
Marine Biology | Evolution | Phylogeography | Genomics | Metagenomic
Marine Biology | Evolution | Phylogeography | Genomics | Metagenomic
H-Index Metrics
-
H-Index14
-
i10 Index23
-
Citation Counts877
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Premium Data
* Total H Index Rankings
Rankings
789,281
World Rank
819
Country Rank
11
University
Ranking Based On Selection:
10
Engineering & Technology / Marine Sciences and Engineering
Physical oceanography | long equatorial waves | El Niño monitorin
Physical oceanography | long equatorial waves | El Niño monitorin
H-Index Metrics
-
H-Index14
-
i10 Index14
-
Citation Counts1,334
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* Total H Index Rankings
Rankings
1,096,300
World Rank
1,543
Country Rank
183
University
Ranking Based On Selection:
11
Engineering & Technology / Marine Sciences and Engineering
Industrial ecology | life cycle assessment | MFA | marine pollution | plastic
Industrial ecology | life cycle assessment | MFA | marine pollution | plastic
H-Index Metrics
-
H-Index9
-
i10 Index9
-
Citation Counts444
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Premium Data
* Total H Index Rankings
Rankings
1,144,097
World Rank
1,660
Country Rank
57
University
Ranking Based On Selection:
12
Engineering & Technology / Marine Sciences and Engineering
benthic ecology | polar ecosystems | climate change | marine geology | altitude ecosystem
benthic ecology | polar ecosystems | climate change | marine geology | altitude ecosystem
H-Index Metrics
-
H-Index9
-
i10 Index8
-
Citation Counts1,188
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Premium Data
* Total H Index Rankings
Rankings
1,173,868
World Rank
1,768
Country Rank
63
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
1,179,506
World Rank
1,786
Country Rank
203
University
Ranking Based On Selection:
14
Engineering & Technology / Marine Sciences and Engineering
Biogeografía | Ecología del paisaje | Oceanografía | Sistemas de Información Geográfica y Teledetección | Conservació
Biogeografía | Ecología del paisaje | Oceanografía | Sistemas de Información Geográfica y Teledetección | Conservació
H-Index Metrics
-
H-Index9
-
i10 Index8
-
Citation Counts202
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Premium Data
* Total H Index Rankings
Rankings
1,253,013
World Rank
1,994
Country Rank
77
University
Ranking Based On Selection:
15
Engineering & Technology / Marine Sciences and Engineering
Porifera | molecular systematics | marine ecolog
Porifera | molecular systematics | marine ecolog
H-Index Metrics
-
H-Index8
-
i10 Index8
-
Citation Counts279
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Premium Data
* Total H Index Rankings
Rankings
1,745,926
World Rank
4,078
Country Rank
146
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
1,895,744
World Rank
4,986
Country Rank
184
University
Ranking Based On Selection:
17
Engineering & Technology / Marine Sciences and Engineering
Marine Biology | Biotechnology | Astrobiology | Planetary Science
Marine Biology | Biotechnology | Astrobiology | Planetary Science
H-Index Metrics
-
H-Index4
-
i10 Index2
-
Citation Counts77
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Premium Data
* Total H Index Rankings
Rankings
2,238,950
World Rank
7,754
Country Rank
279
University
Ranking Based On Selection:
18
Engineering & Technology / Marine Sciences and Engineering
Oceanografía | limnología | macroinvertebrado
Oceanografía | limnología | macroinvertebrado
H-Index Metrics
-
H-Index2
-
i10 Index2
-
Citation Counts71
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Premium Data
* Total H Index Rankings
Rankings
2,432,489
World Rank
10,088
Country Rank
256
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
2,537,285
World Rank
11,852
Country Rank
226
University
Ranking Based On Selection:
20
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