Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Water resources
Environment
Geology
Civil Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,919
18,774
0.897
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
environmental geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,151
1,486
0.242
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
Civil and environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36
25
0.694
Nadhir Al Ansari
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,919
18,774
0.897
Water resources
Environment
Geology
Civil Engineering
Johan Ingri
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,151
1,486
0.242
environmental geochemistry
Youen Pericault
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36
25
0.694
Civil and environmental engineering