Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
Geo-Data Science Geology Data Transformation & Curation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
44
37
0.841
* Total i10 IndexRankings
Ranking Based On Selection :2
Geochemistry
Environmental Mineralogy
Shale Gas
Carbon Dioxide Sequestration
Synchrotron Spectroscopy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
40
0.930
* Total i10 IndexRankings
Ranking Based On Selection :3
Geochemistry
Unconventional Resources
Geothermal Energy
Geologic CO2 storage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
36
0.878
* Total i10 IndexRankings
Ranking Based On Selection :4
Geology
Carbon Capture and Storage
Thermochronology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
26
0.963
* Total i10 IndexRankings
Ranking Based On Selection :5
Critical Mineral Geochemistry
Geologic Carbon Storage
Methane Biogeochemistry
Brine Geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
17
0.810
* Total i10 IndexRankings
Ranking Based On Selection :6
Geochemistry
Geologic CO2 sequestration
Hydraulic fracturing
Geothermal
Enhanced mineralization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
14
0.933
* Total i10 IndexRankings
Ranking Based On Selection :7
Geology
Tectonics
Structural Geology
Geochronology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
10
0.769
* Total i10 IndexRankings
Ranking Based On Selection :8
Geochemistry
Rare Earth Elements
Coal
Energy
Mining
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
11
0.917
* Total i10 IndexRankings
Ranking Based On Selection :9
environmental organic geochemistry
dissolved organic matter
electrochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 IndexRankings
Ranking Based On Selection :10
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
1
0.500
Kelly Rose
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
44
37
0.841
Geo-Data Science Geology Data Transformation & Curation
Christina Lopano
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
40
0.930
Geochemistry
Environmental Mineralogy
Shale Gas
Carbon Dioxide Sequestration
Synchrotron Spectroscopy
Alexandra Hakala
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
41
36
0.878
Geochemistry
Unconventional Resources
Geothermal Energy
Geologic CO2 storage
Sean Sanguinito
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
26
0.963
Geology
Carbon Capture and Storage
Thermochronology
Burt Thomas
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
17
0.810
Critical Mineral Geochemistry
Geologic Carbon Storage
Methane Biogeochemistry
Brine Geochemistry
Wei Xiong
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
14
0.933
Geochemistry
Geologic CO2 sequestration
Hydraulic fracturing
Geothermal
Enhanced mineralization
Sarah Ruth Brown
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
10
0.769
Geology
Tectonics
Structural Geology
Geochronology
Scott N Montross
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
11
0.917
Geochemistry
Rare Earth Elements
Coal
Energy
Mining
Brandon C Mcadams
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
environmental organic geochemistry
dissolved organic matter
electrochemistry
C Gabriel Creason
National Energy Technology Laboratory
Pittsburgh, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
1
0.500