Citation Rankings
Highly Cited Researchers
Engineering & Technology / Earth Sciences Highly Cited Researchers 90 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
geology
volcanology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,799
15,328
0.244
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Geology
Geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,850
15,390
0.253
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Organic Geochemistry
Biogeochemistry
Paleoclimate
Global Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,435
12,256
0.403
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Earth Sciences
Limestones
Sedimentology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,164
7,944
0.272
* Total Citation Counts Rankings
Ranking Based On Selection: 5
palaeobiology
evodevo
Plants
Metazoa
molecular clocks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,612
10,945
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Glaciers ice sheets geochemistry biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,603
6,043
0.343
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Phylogeny
Molecular palaeobiology
Zoology
Metazoa
Prokaryotes & Eukaryogenesis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,631
5,823
0.461
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Biogeochemistry
Nitrogen
Phosphorus
Carbon
Freshwaters
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,990
4,266
0.356
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Geotechnical Engineering
Geotechnical Earthquake Engineering
Soil-Structure Interaction
Soil Dynamics
Earthquake Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,150
4,236
0.463
* Total Citation Counts Rankings
Ranking Based On Selection: 10
palaeobiology
biomechanics
evolution
dinosaurs
computer modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,247
4,154
0.504
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Isotope Geochemistry
Trace Element Geochemistry
Igneous Petrology
Ocean Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,804
2,770
0.355
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Mineralogy
Petrology
Mantle
Diamonds
Silicate Melts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,190
2,017
0.281
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Earth Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,676
2,151
0.322
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Volcanology
Natural Hazards
Disaster Risk Reduction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,196
2,152
0.347
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Earthquake Engineering
Structural Dynamics
Bridge Engineering
Performance-based Earthquake
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,657
3,512
0.621
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Biomarker
climate
organic geochemistry
earth sciences
chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,293
3,918
0.740
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Volcanology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,056
2,464
0.487
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Seismology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,566
2,053
0.450
* Total Citation Counts Rankings
Ranking Based On Selection: 19
hydrology
biogeochemistry
water-rock reactions
karst
carbonates
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,378
1,655
0.378
* Total Citation Counts Rankings
Ranking Based On Selection: 20
volcanology
gravimetry
geophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,306
1,710
0.397
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Volcanology
Remote Sensing
UAVs
Volcanic ash and gas
Climate Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,150
1,403
0.338
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Soil geochemistry
biogeochemistry
weathering
critical zone
geomicrobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,631
1,708
0.470
* Total Citation Counts Rankings
Ranking Based On Selection: 23
seismology
earthquakes
statistical seismology
earthquake forecasting
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,532
2,204
0.624
* Total Citation Counts Rankings
Ranking Based On Selection: 24
coral reefs
tropical climate and environmental variability
biogeography
geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,451
867
0.251
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Earthquake engineering and structural dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,704
1,375
0.509
* Total Citation Counts Rankings
Rankings
7,130
613
17
Ranking Based On Selection: 1
Stephen Sparks
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,799
15,328
0.244
* Total Citation Counts Rankings
Rankings
7,485
650
18
Ranking Based On Selection: 2
CJ Hawkesworth
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,850
15,390
0.253
* Total Citation Counts Rankings
Rankings
22,473
1,986
50
Ranking Based On Selection: 3
Richard D Pancost
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,435
12,256
0.403
Organic Geochemistry
Biogeochemistry
Paleoclimate
Global Change
* Total Citation Counts Rankings
Rankings
24,042
2,110
53
Ranking Based On Selection: 4
Maurice Tucker
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,164
7,944
0.272
Earth Sciences
Limestones
Sedimentology
* Total Citation Counts Rankings
Rankings
32,865
2,872
78
Ranking Based On Selection: 5
Philip CJ Donoghue
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,612
10,945
0.464
palaeobiology
evodevo
Plants
Metazoa
molecular clocks
* Total Citation Counts Rankings
Rankings
49,403
4,274
113
Ranking Based On Selection: 6
Martyn Tranter
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,603
6,043
0.343
Glaciers ice sheets geochemistry biogeochemistry
* Total Citation Counts Rankings
Rankings
76,168
6,491
151
Ranking Based On Selection: 7
Davide Pisani
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,631
5,823
0.461
Phylogeny
Molecular palaeobiology
Zoology
Metazoa
Prokaryotes & Eukaryogenesis
* Total Citation Counts Rankings
Rankings
81,113
6,878
156
Ranking Based On Selection: 8
Penny Johnes
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,990
4,266
0.356
Biogeochemistry
Nitrogen
Phosphorus
Carbon
Freshwaters
* Total Citation Counts Rankings
Rankings
111,267
9,117
214
Ranking Based On Selection: 9
George Mylonakis
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,150
4,236
0.463
Geotechnical Engineering
Geotechnical Earthquake Engineering
Soil-Structure Interaction
Soil Dynamics
Earthquake Engineering
* Total Citation Counts Rankings
Rankings
124,985
10,184
232
Ranking Based On Selection: 10
Emily J Rayfield
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,247
4,154
0.504
palaeobiology
biomechanics
evolution
dinosaurs
computer modelling
* Total Citation Counts Rankings
Rankings
132,864
10,750
249
Ranking Based On Selection: 11
Ian Parkinson
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,804
2,770
0.355
Isotope Geochemistry
Trace Element Geochemistry
Igneous Petrology
Ocean Chemistry
* Total Citation Counts Rankings
Rankings
145,059
11,564
273
Ranking Based On Selection: 12
Simon C. Kohn
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,190
2,017
0.281
Mineralogy
Petrology
Mantle
Diamonds
Silicate Melts
* Total Citation Counts Rankings
Rankings
156,771
12,363
285
Ranking Based On Selection: 13
Christopher Coath
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,676
2,151
0.322
* Total Citation Counts Rankings
Rankings
169,174
13,187
300
Ranking Based On Selection: 14
Jeremy Phillips
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,196
2,152
0.347
Volcanology
Natural Hazards
Disaster Risk Reduction
* Total Citation Counts Rankings
Rankings
185,232
14,269
316
Ranking Based On Selection: 15
Anastasios Sextos
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,657
3,512
0.621
Earthquake Engineering
Structural Dynamics
Bridge Engineering
Performance-based Earthquake
* Total Citation Counts Rankings
Rankings
197,616
15,157
334
Ranking Based On Selection: 16
David Naafs
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,293
3,918
0.740
Biomarker
climate
organic geochemistry
earth sciences
chemistry
* Total Citation Counts Rankings
Rankings
206,678
15,774
345
Ranking Based On Selection: 17
Alison Rust
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,056
2,464
0.487
* Total Citation Counts Rankings
Rankings
227,564
17,116
374
Ranking Based On Selection: 18
James Wookey
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,566
2,053
0.450
* Total Citation Counts Rankings
Rankings
236,689
17,721
394
Ranking Based On Selection: 19
Fiona Whitaker
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,378
1,655
0.378
hydrology
biogeochemistry
water-rock reactions
karst
carbonates
* Total Citation Counts Rankings
Rankings
240,367
17,939
396
Ranking Based On Selection: 20
Joachim Gottsmann
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,306
1,710
0.397
volcanology
gravimetry
geophysics
* Total Citation Counts Rankings
Rankings
248,634
18,478
408
Ranking Based On Selection: 21
Matthew Watson
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,150
1,403
0.338
Volcanology
Remote Sensing
UAVs
Volcanic ash and gas
Climate Engineering
* Total Citation Counts Rankings
Rankings
279,795
20,386
434
Ranking Based On Selection: 22
Heather L. Buss
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,631
1,708
0.470
Soil geochemistry
biogeochemistry
weathering
critical zone
geomicrobiology
* Total Citation Counts Rankings
Rankings
286,455
20,792
441
Ranking Based On Selection: 23
Maximilian Werner
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,532
2,204
0.624
seismology
earthquakes
statistical seismology
earthquake forecasting
* Total Citation Counts Rankings
Rankings
292,325
21,140
449
Ranking Based On Selection: 24
Erica Hendy
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,451
867
0.251
coral reefs
tropical climate and environmental variability
biogeography
geochemistry
* Total Citation Counts Rankings
Rankings
357,360
24,868
528
Ranking Based On Selection: 25
Adam Crewe
University of Bristol
Bristol, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,704
1,375
0.509
Earthquake engineering and structural dynamics