World Scientist and University Rankings 2025
Engineering & Technology / Marine Sciences and Engineering 10.838 Scientists Subject Rankings - 2025
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 19, 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 (1.121.318) 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
1,094
World Rank
33
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Marine Sciences and Engineering
Biological Oceanography | nutrients | phytoplankto
Biological Oceanography | nutrients | phytoplankto
H-Index Metrics
-
H-Index174
-
i10 Index1,006
-
Citation Counts140,236
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* Total H Index Rankings
Rankings
1,235
World Rank
25
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Marine Sciences and Engineering
organic geochemistry | microbial ecology | chemical oceanography | biogeochemistry | limnolog
organic geochemistry | microbial ecology | chemical oceanography | biogeochemistry | limnolog
H-Index Metrics
-
H-Index168
-
i10 Index849
-
Citation Counts106,333
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* Total H Index Rankings
Rankings
2,515
World Rank
17
Country Rank
4
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
2,795
World Rank
1,257
Country Rank
3
University
Ranking Based On Selection:
4
Engineering & Technology / Marine Sciences and Engineering
microbiology | oceanography | earth sciences | biogeochemistr
microbiology | oceanography | earth sciences | biogeochemistr
H-Index Metrics
-
H-Index138
-
i10 Index479
-
Citation Counts78,725
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* Total H Index Rankings
Rankings
3,593
World Rank
1,621
Country Rank
46
University
Ranking Based On Selection:
5
Engineering & Technology / Marine Sciences and Engineering
Climate change | climate variability | climate modeling | ocean-atmospheric dynamic
Climate change | climate variability | climate modeling | ocean-atmospheric dynamic
H-Index Metrics
-
H-Index129
-
i10 Index431
-
Citation Counts74,892
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* Total H Index Rankings
Rankings
4,037
World Rank
343
Country Rank
1
University
Ranking Based On Selection:
6
Engineering & Technology / Marine Sciences and Engineering
Microplastics | ecology of coastal defences | marine ecology | marine pollutio
Microplastics | ecology of coastal defences | marine ecology | marine pollutio
H-Index Metrics
-
H-Index125
-
i10 Index291
-
Citation Counts115,319
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* Total H Index Rankings
Rankings
4,269
World Rank
1,944
Country Rank
4
University
Ranking Based On Selection:
7
Engineering & Technology / Marine Sciences and Engineering
Physical Chemistry of Natural Waters | Chemical Oceanography | Marine Chemistr
Physical Chemistry of Natural Waters | Chemical Oceanography | Marine Chemistr
H-Index Metrics
-
H-Index124
-
i10 Index467
-
Citation Counts80,341
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* Total H Index Rankings
Rankings
4,412
World Rank
163
Country Rank
7
University
Ranking Based On Selection:
8
Engineering & Technology / Marine Sciences and Engineering
coastal processes | coral reefs | coral calcification | ocean acidification | climate chang
coastal processes | coral reefs | coral calcification | ocean acidification | climate chang
H-Index Metrics
-
H-Index123
-
i10 Index363
-
Citation Counts56,633
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* Total H Index Rankings
Rankings
4,693
World Rank
2,144
Country Rank
52
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
4,744
World Rank
2,174
Country Rank
13
University
Ranking Based On Selection:
10
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* Total H Index Rankings
Rankings
4,849
World Rank
2,215
Country Rank
1
University
Ranking Based On Selection:
11
Engineering & Technology / Marine Sciences and Engineering
harmful algal blooms | HABs | marine biotoxins | toxins | red tide
harmful algal blooms | HABs | marine biotoxins | toxins | red tide
H-Index Metrics
-
H-Index120
-
i10 Index444
-
Citation Counts55,998
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* Total H Index Rankings
Rankings
5,108
World Rank
2,332
Country Rank
1
University
Ranking Based On Selection:
12
Engineering & Technology / Marine Sciences and Engineering
Chemical Oceanographer Carbon Cycle Ocean Acidiificatio
Chemical Oceanographer Carbon Cycle Ocean Acidiificatio
H-Index Metrics
-
H-Index118
-
i10 Index388
-
Citation Counts86,290
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* Total H Index Rankings
Rankings
5,147
World Rank
2,344
Country Rank
7
University
Ranking Based On Selection:
13
Engineering & Technology / Marine Sciences and Engineering
microbiology | marine microbiology | microbial genomics | metagenomics | microbial oceanograph
microbiology | marine microbiology | microbial genomics | metagenomics | microbial oceanograph
H-Index Metrics
-
H-Index118
-
i10 Index263
-
Citation Counts62,336
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* Total H Index Rankings
Rankings
5,329
World Rank
2,428
Country Rank
59
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
5,360
World Rank
2,439
Country Rank
1
University
Ranking Based On Selection:
15
Engineering & Technology / Marine Sciences and Engineering
marine conservation | coral reefs | small scale fisheries | social ecological systems | climate chang
marine conservation | coral reefs | small scale fisheries | social ecological systems | climate chang
H-Index Metrics
-
H-Index117
-
i10 Index324
-
Citation Counts46,087
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* Total H Index Rankings
Rankings
5,536
World Rank
2,519
Country Rank
23
University
Ranking Based On Selection:
16
Engineering & Technology / Marine Sciences and Engineering
Biological oceanography | Marine microbiology | Microbial ecolog
Biological oceanography | Marine microbiology | Microbial ecolog
H-Index Metrics
-
H-Index116
-
i10 Index232
-
Citation Counts62,472
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* Total H Index Rankings
Rankings
5,911
World Rank
2,690
Country Rank
2
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
6,061
World Rank
2,759
Country Rank
9
University
Ranking Based On Selection:
18
Engineering & Technology / Marine Sciences and Engineering
biogeochemistry | geobiology | astrobiology | paleoceanograph
biogeochemistry | geobiology | astrobiology | paleoceanograph
H-Index Metrics
-
H-Index113
-
i10 Index294
-
Citation Counts50,070
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* Total H Index Rankings
Rankings
6,111
World Rank
2,775
Country Rank
64
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
6,181
World Rank
2,814
Country Rank
8
University
Ranking Based On Selection:
20
Engineering & Technology / Marine Sciences and Engineering
Atmospheric chemistry | aerosols | climat
Atmospheric chemistry | aerosols | climat
H-Index Metrics
-
H-Index113
-
i10 Index231
-
Citation Counts54,319
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* Total H Index Rankings
Rankings
6,388
World Rank
319
Country Rank
1
University
Ranking Based On Selection:
21
Engineering & Technology / Marine Sciences and Engineering
Hydrological Modelling | Climate analysis | Statistics | Programming | Oceanograph
Hydrological Modelling | Climate analysis | Statistics | Programming | Oceanograph
H-Index Metrics
-
H-Index112
-
i10 Index172
-
Citation Counts92,081
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* Total H Index Rankings
Rankings
6,495
World Rank
567
Country Rank
7
University
Ranking Based On Selection:
22
Engineering & Technology / Marine Sciences and Engineering
Coastal Systems | Climate Change | Impacts | Adaptation | Integrated Assessmen
Coastal Systems | Climate Change | Impacts | Adaptation | Integrated Assessmen
H-Index Metrics
-
H-Index111
-
i10 Index415
-
Citation Counts63,911
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* Total H Index Rankings
Rankings
6,756
World Rank
274
Country Rank
1
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
7,100
World Rank
3,219
Country Rank
71
University
Ranking Based On Selection:
24
Engineering & Technology / Marine Sciences and Engineering
Bioactive marine natural products | marine algae and cyanobacteria | biosynthesis | genomics and microbial interactions | chemical
Bioactive marine natural products | marine algae and cyanobacteria | biosynthesis | genomics and microbial interactions | chemical
H-Index Metrics
-
H-Index109
-
i10 Index445
-
Citation Counts44,356
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* Total H Index Rankings
Rankings
7,266
World Rank
356
Country Rank
2
University
Ranking Based On Selection:
25
Engineering & Technology / Marine Sciences and Engineering
Marine Biology | Deep-sea Biology | Marine Ecology | Microbial Ecology | Marine Biodiversit
Marine Biology | Deep-sea Biology | Marine Ecology | Microbial Ecology | Marine Biodiversit
H-Index Metrics
-
H-Index108
-
i10 Index399
-
Citation Counts44,554
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