Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Architecture and Design, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
![Scott Goetz](https://cdn.adscientificindex.com/pictures/94/859203.jpg)
Earth observation
Terrestrial Ecosystems
Biodiversity Habitat
Remote Sensing
Canopy Structure
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,786
25,944
0.532
![Christopher S Edwards](https://cdn.adscientificindex.com/pictures/f1/858923.jpg)
Planetary Science
Remote Sensing
Instrumentation
Geology
Mars
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,557
4,819
0.563
* Last 6 Years Citation Counts Rankings
![James B Gaherty](/user/assets/images/profile/no-profile-photo.png)
geological sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,637
1,659
0.456
* Last 6 Years Citation Counts Rankings
![Laura Wasylenki](https://cdn.adscientificindex.com/pictures/b4/859247.jpg)
Geochemistry
biogeochemistry
chemistry of metals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,159
1,560
0.494
* Last 6 Years Citation Counts Rankings
![Mary Reid](https://cdn.adscientificindex.com/pictures/18/833338.jpg)
isotope geochemistry
magmatic geochronology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,867
1,447
0.247
* Last 6 Years Citation Counts Rankings
![Valérie Payré](https://cdn.adscientificindex.com/pictures/8b/842289.jpg)
Petrology
Planetary Science
Planetary Remote Sensing
Planetary Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,698
1,364
0.803
* Last 6 Years Citation Counts Rankings
![Paul J Umhoefer](/user/assets/images/profile/no-profile-photo.png)
tectonics
sedimentary geology
structural geology
stratigraphy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,732
1,354
0.363
* Last 6 Years Citation Counts Rankings
![Robert L Sanford Jr Buck](https://cdn.adscientificindex.com/pictures/d3/833620.jpg)
Ecosystems
soils
land use history
pyrogenic carbon/fire history
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,793
1,348
0.153
* Last 6 Years Citation Counts Rankings
![Michael Elliot Smith](https://cdn.adscientificindex.com/pictures/d5/859251.jpg)
Sedimentary Geology
Geochronology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,667
1,258
0.472
* Last 6 Years Citation Counts Rankings
![James Sample](https://cdn.adscientificindex.com/pictures/d9/833267.jpg)
structural geology
tectonics
geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,309
1,218
0.368
* Last 6 Years Citation Counts Rankings
![Mark Salvatore](https://cdn.adscientificindex.com/pictures/ba/859322.jpg)
Planetary Geology
Laboratory Analyses
Remote Sensing
Field Techniques
Landscape Evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,393
1,136
0.816
* Last 6 Years Citation Counts Rankings
![John M Fegyveresi](https://cdn.adscientificindex.com/pictures/cb/859318.jpg)
Paleoclimate
Glaciology
Physical Ice Properties
Ice Cores
Ice Geophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,455
1,064
0.731
* Last 6 Years Citation Counts Rankings
![Nadine Barlow](/user/assets/images/profile/no-profile-photo.png)
Planetary science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,889
1,060
0.273
* Last 6 Years Citation Counts Rankings
![Roderic Parnell](/user/assets/images/profile/no-profile-photo.png)
geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,916
873
0.456
* Last 6 Years Citation Counts Rankings
![Christine Regalla](https://cdn.adscientificindex.com/pictures/46/859315.jpg)
structural geology
active tectonics
tectonic geomorphology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,084
634
0.585
* Last 6 Years Citation Counts Rankings
![Thomas D Hoisch](/user/assets/images/profile/no-profile-photo.png)
geology
petrology
tectonics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,232
524
0.235
* Last 6 Years Citation Counts Rankings
![Jim Le Moine](https://cdn.adscientificindex.com/pictures/f0/859195.jpg)
biogeochemistry
ecosystem science
forest ecology
phenology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,408
522
0.371
* Last 6 Years Citation Counts Rankings
![Ryan Porter](https://cdn.adscientificindex.com/pictures/1d/859350.jpg)
Geophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
640
388
0.606
* Last 6 Years Citation Counts Rankings
![Joshua Hewes](/user/assets/images/profile/no-profile-photo.png)
seismic design of bridges
accelerated bridge construction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
788
378
0.480
* Last 6 Years Citation Counts Rankings
![Erik Schiefer](https://cdn.adscientificindex.com/pictures/23/859280.jpg)
Geomorphology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,288
372
0.289
* Last 6 Years Citation Counts Rankings
![Andrew J Abraham](https://cdn.adscientificindex.com/pictures/51/5376102.jpg)
Earth System Science
Macroecology
EcoInformatics
Megafauna
Rewilding
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
367
363
0.989
* Last 6 Years Citation Counts Rankings
![Charles Truettner](https://cdn.adscientificindex.com/pictures/2c/5264168.jpg)
Wildfires
Ecohydrology
Dendroclimatology
Climate Change
Isotope Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185
157
0.849
* Last 6 Years Citation Counts Rankings
![Taylor Joyal](/user/assets/images/profile/no-profile-photo.png)
Fluvial Geomorphology
Hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
149
0.351
* Last 6 Years Citation Counts Rankings
![Patrick Shin](https://cdn.adscientificindex.com/pictures/60/5459110.jpg)
geographic information systems
spatial analysis
remote sensing
unmanned aerial systems
forest management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
140
138
0.986
* Last 6 Years Citation Counts Rankings
![Piyali Chanda](https://cdn.adscientificindex.com/pictures/76/5196685.jpg)
Geology and geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
153
126
0.824
Scott Goetz
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,786
25,944
0.532
Earth observation
Terrestrial Ecosystems
Biodiversity Habitat
Remote Sensing
Canopy Structure
Christopher S Edwards
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,557
4,819
0.563
Planetary Science
Remote Sensing
Instrumentation
Geology
Mars
James B Gaherty
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,637
1,659
0.456
Laura Wasylenki
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,159
1,560
0.494
Geochemistry
biogeochemistry
chemistry of metals
Mary Reid
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,867
1,447
0.247
isotope geochemistry
magmatic geochronology
Valérie Payré
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,698
1,364
0.803
Petrology
Planetary Science
Planetary Remote Sensing
Planetary Geochemistry
Paul J Umhoefer
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,732
1,354
0.363
tectonics
sedimentary geology
structural geology
stratigraphy
Robert L Sanford Jr Buck
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,793
1,348
0.153
Ecosystems
soils
land use history
pyrogenic carbon/fire history
Michael Elliot Smith
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,667
1,258
0.472
Sedimentary Geology
Geochronology
James Sample
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,309
1,218
0.368
structural geology
tectonics
geochemistry
Mark Salvatore
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,393
1,136
0.816
Planetary Geology
Laboratory Analyses
Remote Sensing
Field Techniques
Landscape Evolution
John M Fegyveresi
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,455
1,064
0.731
Paleoclimate
Glaciology
Physical Ice Properties
Ice Cores
Ice Geophysics
Nadine Barlow
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,889
1,060
0.273
Roderic Parnell
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,916
873
0.456
Christine Regalla
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,084
634
0.585
structural geology
active tectonics
tectonic geomorphology
Thomas D Hoisch
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,232
524
0.235
Jim Le Moine
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,408
522
0.371
biogeochemistry
ecosystem science
forest ecology
phenology
Ryan Porter
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
640
388
0.606
Joshua Hewes
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
788
378
0.480
seismic design of bridges
accelerated bridge construction
Erik Schiefer
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,288
372
0.289
Andrew J Abraham
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
367
363
0.989
Earth System Science
Macroecology
EcoInformatics
Megafauna
Rewilding
Charles Truettner
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185
157
0.849
Wildfires
Ecohydrology
Dendroclimatology
Climate Change
Isotope Geochemistry
Taylor Joyal
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
149
0.351
Fluvial Geomorphology
Hydrology
Patrick Shin
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
140
138
0.986
geographic information systems
spatial analysis
remote sensing
unmanned aerial systems
forest management
Piyali Chanda
Northern Arizona University
Flagstaff, United States
![United States](/flags/us.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
153
126
0.824