Citation Rankings
Highly Cited Researchers

Engineering & Technology / Earth Sciences Highly Cited Researchers 7 Scientists Citation Rankings - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
United States
Dana Royer
paleoclimatology
paleobotany
climate change
plant ecology
geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,216
6,118
0.355
* Total Citation Counts Rankings
Ranking Based On Selection: 2
United States
Johan Joop C Varekamp
geochemistry
volcanology
limnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,978
1,052
0.176
* Total Citation Counts Rankings
Ranking Based On Selection: 3
United States
James P Greenwood
Cosmochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,069
774
0.252
* Total Citation Counts Rankings
Ranking Based On Selection: 4
United States
Timothy Ku
Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,513
422
0.279
* Total Citation Counts Rankings
Ranking Based On Selection: 5
United States
Phillip Resor
Structural Geology
Faults
Earthquakes
Planetary Geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
586
142
0.242
* Total Citation Counts Rankings
Ranking Based On Selection: 6
United States
S Molly Wagner
Volcanic geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13
11
0.846
* Total Citation Counts Rankings
Ranking Based On Selection: 7
United States
Celeste Smith
Ice Core Science
Tephra
Aqueous Geochemisty
Volcanology
Limnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total Citation Counts Rankings
Rankings
50,854
United States
21,965
4
Ranking Based On Selection: 1
Dana Royer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,216
6,118
0.355
paleoclimatology
paleobotany
climate change
plant ecology
geology
* Total Citation Counts Rankings
Rankings
175,334
United States
64,340
16
Ranking Based On Selection: 2
Johan Joop C Varekamp
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,978
1,052
0.176
* Total Citation Counts Rankings
Rankings
322,556
United States
107,297
35
Ranking Based On Selection: 3
James P Greenwood
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,069
774
0.252
* Total Citation Counts Rankings
Rankings
540,564
United States
166,266
62
Ranking Based On Selection: 4
Timothy Ku
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,513
422
0.279
* Total Citation Counts Rankings
Rankings
871,401
United States
244,828
91
Ranking Based On Selection: 5
Phillip Resor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
586
142
0.242
Structural Geology
Faults
Earthquakes
Planetary Geology
* Total Citation Counts Rankings
Rankings
2,189,289
United States
427,304
161
Ranking Based On Selection: 6
S Molly Wagner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13
11
0.846
* Total Citation Counts Rankings
Rankings
2,309,811
United States
439,412
168
Ranking Based On Selection: 7
Celeste Smith
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Ice Core Science
Tephra
Aqueous Geochemisty
Volcanology
Limnology