Productivity Rankings is an exclusive service provided by AD Scientific Index. This ranking system, derived from the i10 index, highlights the productivity of scientists in publishing impactful scientific articles. Productivity Rankings serves as a tool to identify highly productive scientists across specific areas, disciplines, universities, and countries, and supports the creation of effective incentives and academic policies. The global, regional, and institutional rankings of scientists in this table are calculated based on their total i10 index. Moreover, you can explore special rankings derived from Productivity Rankings, such as 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
Petroleum Engineering
Underground Gas storage
CCS/CCUS
Geothermal Engineering
Hydrogen storage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
46
0.767
* Total i10 IndexRankings
Ranking Based On Selection :2
Geophysik
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
35
0.648
* Total i10 IndexRankings
Ranking Based On Selection :3
Petroleum Engineering
Underground Hydrogen Storage
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
12
0.923
* Total i10 IndexRankings
Ranking Based On Selection :4
Petroleum Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection :5
Petroleum Engineering
Software Development
Data Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Leonhard Ganzer
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
46
0.767
Petroleum Engineering
Underground Gas storage
CCS/CCUS
Geothermal Engineering
Hydrogen storage
Weller A
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
54
35
0.648
Birger Hagemann
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
12
0.923
Petroleum Engineering
Underground Hydrogen Storage
Calvin Lumban Gaol
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Petroleum Engineering
Ramez Maher Abdalla
Technische Universität Clausthal
Clausthal-Zellerfeld, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Petroleum Engineering
Software Development
Data Science