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Year
Kramers, Jan Dirk

Kramers, Jan Dirk

University of Johannesburg, South Africa

2026 Rank: 115,053

Overall Rank
Rank in SubField 1
Publications
Total Cites
Main Field:

Earth & Environmental Sciences

SubField 1:

Geochemistry & Geophysics

SubField 2:

Geology

Rank in SubField 1: 1,541 out of 108,013 Researchers

Data For The Year: 2026
Metrics Self-Citations Excluded All
Rank Based on Composite Score115,053108,256
Total Cites915988
H-index1112
Hm-index45
Number of Single Authored Papers1212
Total Cites to Single Authored Papers55
Number of Single+First Authored Papers3131
Total Cites to Single+First Authored Papers3940
Number of Single+First+Last Authored Papers8686
Total Cites to Single+First+Last Authored Papers538554
Composite Score22
Number of Distinct Citing Papers775807
Ratio of Total Citations to Distinct Citing Papers 1.18 1.22
Self-Citation Percentage
7.39%
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Kramers, Jan Dirk

Kramers, Jan Dirk

University of Johannesburg, South Africa

2025 Rank: 118,449

Overall Rank
Rank in SubField 1
Publications
Total Cites
Main Field:

Earth & Environmental Sciences

SubField 1:

Geochemistry & Geophysics

SubField 2:

Geology

Rank in SubField 1: 1,689 out of 103,460 Researchers

Data For The Year: 2025
Metrics Self-Citations Excluded All
Rank Based on Composite Score118,449105,327
Total Cites878980
H-index1012
Hm-index45
Number of Single Authored Papers1212
Total Cites to Single Authored Papers44
Number of Single+First Authored Papers3131
Total Cites to Single+First Authored Papers3946
Number of Single+First+Last Authored Papers8686
Total Cites to Single+First+Last Authored Papers514547
Composite Score22
Number of Distinct Citing Papers748795
Ratio of Total Citations to Distinct Citing Papers 1.17 1.23
Self-Citation Percentage
10.41%
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