World Scientist and University Rankings 2025

Sri Lanka Engineering & Technology 26 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 (1.121.299) 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].

Sri Lanka

Total 26 scientists, 1 country, 45 institution

List without CERN, Statistical Data etc.

Sort by last 6 years H Index

* Total H Index Rankings

Rankings

129,194

World Rank

Country Rank

University

Ranking Based On Selection:

Rohana Chandrajith

University of Peradeniya Peradeniya, Sri Lanka

Engineering & Technology / Earth Sciences
Geology | Geochemistry | Medical Geology | Isotope Hydrolog

H-Index Metrics

H-Index

42
i10 Index

111
Citation Counts

5,916

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* Total H Index Rankings

Rankings

156,623

World Rank

Country Rank

University

Ranking Based On Selection:

CB Dissanayake

National Institute of Fundamental Studies Sri Lanka Nagoya, Sri Lanka

Engineering & Technology / Earth Sciences
Geochemistry | medical Geology | water quality environmen

H-Index Metrics

H-Index

39
i10 Index

132
Citation Counts

6,176

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* Total H Index Rankings

Rankings

257,504

World Rank

Country Rank

University

Ranking Based On Selection:

HMTGA Pitawala

University of Peradeniya Peradeniya, Sri Lanka

Engineering & Technology / Earth Sciences
Geochemistry | Petrolog

H-Index Metrics

H-Index

30
i10 Index

74
Citation Counts

2,902

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* Total H Index Rankings

Rankings

345,447

World Rank

146

Country Rank

University

Ranking Based On Selection:

Amila Sandaruwan Ratnayake

Uva Wellassa University Badulla, Sri Lanka

Engineering & Technology / Earth Sciences
Coastal and Marine Geology | Paleoclimatology | Sedimentary Geology | Environmental Scienc

H-Index Metrics

H-Index

25
i10 Index

49
Citation Counts

2,391

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* Total H Index Rankings

Rankings

397,850

World Rank

191

Country Rank

University

Ranking Based On Selection:

Sanjeewa PK Malaviarachchi

University of Peradeniya Peradeniya, Sri Lanka

Engineering & Technology / Earth Sciences
Petrology | Mineralogy | Geochemistry | Radiogenic Isotope

H-Index Metrics

H-Index

23
i10 Index

41
Citation Counts

1,950

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* Total H Index Rankings

Rankings

589,587

World Rank

361

Country Rank

University

Ranking Based On Selection:

Ashani Savinda Ranathunga

University of Moratuwa Moratuwa, Sri Lanka

Engineering & Technology / Earth Sciences
Geosequestration of carbon dioxide | Soil stabilisation | waste management | inclusive learning | life

H-Index Metrics

H-Index

17
i10 Index

20
Citation Counts

1,303

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* Total H Index Rankings

Rankings

728,103

World Rank

534

Country Rank

105

University

Ranking Based On Selection:

Tilak Hewawasam

University of Peradeniya Peradeniya, Sri Lanka

Engineering & Technology / Earth Sciences
Geomorophology | Earth Surface Processes | Sediment Transport | Watershed Hydrology | Chemical Weatherin

H-Index Metrics

H-Index

14
i10 Index

15
Citation Counts

1,143

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* Total H Index Rankings

Rankings

731,039

World Rank

542

Country Rank

University

Ranking Based On Selection:

Ranjith Premalal De Silva

Uva Wellassa University Badulla, Sri Lanka

Engineering & Technology / Earth Sciences
Geo-informatics | GIS | Water Resources | Spatial Statistic

H-Index Metrics

H-Index

14
i10 Index

20
Citation Counts

933

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* Total H Index Rankings

Rankings

749,358

World Rank

566

Country Rank

115

University

Ranking Based On Selection:

Atula Senaratne

University of Peradeniya Peradeniya, Sri Lanka

Engineering & Technology / Earth Sciences
Geochemistry | Geology | Environment | Geophysics | Seismicit

H-Index Metrics

H-Index

14
i10 Index

19
Citation Counts

548

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* Total H Index Rankings

Rankings

1,089,727

World Rank

1,119

Country Rank

225

University

Ranking Based On Selection:

Seneviratne HN

University of Peradeniya Peradeniya, Sri Lanka

Engineering & Technology / Earth Sciences
geotechnical engineerin

H-Index Metrics

H-Index

9
i10 Index

9
Citation Counts

1,136

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* Total H Index Rankings