Thomas C. Johnson

10.5k total citations · 1 hit paper
166 papers, 6.9k citations indexed

About

Thomas C. Johnson is a scholar working on Atmospheric Science, Ecology and Earth-Surface Processes. According to data from OpenAlex, Thomas C. Johnson has authored 166 papers receiving a total of 6.9k indexed citations (citations by other indexed papers that have themselves been cited), including 75 papers in Atmospheric Science, 70 papers in Ecology and 40 papers in Earth-Surface Processes. Recurrent topics in Thomas C. Johnson's work include Geology and Paleoclimatology Research (74 papers), Aquatic Ecosystems and Biodiversity (45 papers) and Geological formations and processes (39 papers). Thomas C. Johnson is often cited by papers focused on Geology and Paleoclimatology Research (74 papers), Aquatic Ecosystems and Biodiversity (45 papers) and Geological formations and processes (39 papers). Thomas C. Johnson collaborates with scholars based in United States, Netherlands and Norway. Thomas C. Johnson's co-authors include Erik T. Brown, Josef P. Werne, James M. Russell, Christopher A. Scholz, Michael R. Talbot, R. D. Ricketts, Isla S. Castañeda, Jaap S. Sinninghe Damsté, Kerry Kelts and Stefan Schouten and has published in prestigious journals such as Nature, Science and Proceedings of the National Academy of Sciences.

In The Last Decade

Thomas C. Johnson

162 papers receiving 6.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

East African megadroughts between 135 and 75 thousand years ago and bearing on early-modern human origins

2007 350 citations Christopher A. Scholz, Thomas C. Johnson et al. Proceedings of the National Academy of Sciences profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Thomas C. Johnson United States	45	3.8k	2.7k	1.5k	1.3k	1.2k	166	6.9k
Andrew S. Cohen United States	46	3.4k 0.9×	3.3k 1.2×	1.4k 0.9×	1.5k 1.2×	1.1k 0.9×	197	8.0k
Dirk Verschuren Belgium	45	4.3k 1.1×	3.3k 1.2×	1.2k 0.8×	1.2k 0.9×	1.5k 1.3×	171	7.5k
Michael R. Talbot Norway	39	3.4k 0.9×	2.0k 0.8×	1.7k 1.1×	949 0.7×	780 0.7×	70	6.0k
Paul A. Baker United States	45	3.9k 1.0×	2.0k 0.8×	1.2k 0.8×	847 0.7×	747 0.6×	105	6.7k
Kerry Kelts United States	43	3.8k 1.0×	1.6k 0.6×	1.9k 1.2×	741 0.6×	592 0.5×	80	5.8k
James M. Russell United States	41	4.8k 1.3×	2.2k 0.8×	1.4k 0.9×	1.3k 1.0×	796 0.7×	183	7.6k
Christopher A. Scholz United States	35	2.5k 0.7×	1.2k 0.5×	1.6k 1.0×	873 0.7×	417 0.3×	133	5.1k
Sherilyn C. Fritz United States	53	6.0k 1.6×	3.3k 1.2×	1.7k 1.1×	955 0.8×	1.5k 1.3×	167	8.9k
David J. Lowe New Zealand	48	5.1k 1.3×	1.9k 0.7×	966 0.6×	1.2k 0.9×	535 0.4×	198	7.4k
Rewi M. Newnham New Zealand	46	4.7k 1.2×	2.0k 0.7×	1.1k 0.7×	1.4k 1.1×	369 0.3×	117	6.7k

Countries citing papers authored by Thomas C. Johnson

Since Specialization

Citations

This map shows the geographic impact of Thomas C. Johnson's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Thomas C. Johnson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Thomas C. Johnson more than expected).

Fields of papers citing papers by Thomas C. Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Thomas C. Johnson. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Thomas C. Johnson. The network helps show where Thomas C. Johnson may publish in the future.

Co-authorship network of co-authors of Thomas C. Johnson

This figure shows the co-authorship network connecting the top 25 collaborators of Thomas C. Johnson. A scholar is included among the top collaborators of Thomas C. Johnson based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Thomas C. Johnson. Thomas C. Johnson is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Johnson, Thomas C., et al.. (2016). Changes in homeland security activities since 9/11: an examination of state and local law enforcement agencies’ practices. Police Practice and Research. 18(2). 160–173. 4 indexed citations

Lane, Christine, et al.. (2016). DISCOVERY OF MOUNT MAZAMA CRYPTOTEPHRA IN LAKE SUPERIOR. Abstracts with programs - Geological Society of America. 1 indexed citations

Johnson, Thomas C., Josef P. Werne, Erik T. Brown, et al.. (2016). A progressively wetter climate in southern East Africa over the past 1.3 million years. Nature. 537(7619). 220–224. 90 indexed citations

Johnson, Thomas C., et al.. (2014). Recipes for Enhancing Digital Collections with Linked Data. SHILAP Revista de lepidopterología. 4 indexed citations

Johnson, Thomas C.. (2013). Indexing Linked Bibliographic Data with JSON-LD, BibJSON and Elasticsearch. SHILAP Revista de lepidopterología. 7 indexed citations

Johnson, Thomas C.. (2012). Effect of a Marketing Program on Freshman Student Registration for an Emergency Notification System. Journal of Homeland Security and Emergency Management. 9(1). 5 indexed citations

Berke, Melissa A., Thomas C. Johnson, Josef P. Werne, Stefan Schouten, & Jaap S. Sinninghe Damsté. (2010). Temperature and hydrologic variability of Lake Victoria, East Africa since the Late Pleistocene. AGUFM. 2010. 1 indexed citations

Berke, Melissa A., Thomas C. Johnson, Josef P. Werne, Stefan Schouten, & Jaap S. Sinninghe Damsté. (2009). Holocene TEX86 temperature reconstructions from Lake Turkana, East Africa. AGUFM. 2009. 1 indexed citations

Lyons, R. P., et al.. (2009). Scientific drilling in continental East Africa: The dominance of eccentricity-modulated precession and half-precession on continental tropical climate. AGU Fall Meeting Abstracts. 2009. 1 indexed citations

10.

Berke, Melissa A., Thomas C. Johnson, Josef P. Werne, & Lindsay A. Powers. (2007). Lake Surface Temperature Variability in Lake Malawi Since the Last Glacial Maximum. AGUFM. 2007. 1 indexed citations

11.

Castañeda, Isla S., Josef P. Werne, & Thomas C. Johnson. (2007). Wet and arid phases in the southeast African tropics since the Last Glacial Maximum. Geology. 35(9). 823–823. 98 indexed citations

12.

Scholz, Christopher A., Thomas C. Johnson, Andrew S. Cohen, et al.. (2007). East African megadroughts between 135 and 75 thousand years ago and bearing on early-modern human origins. Proceedings of the National Academy of Sciences. 104(42). 16416–16421. 350 indexed citations breakdown →

13.

Scholz, Christopher A., Thomas C. Johnson, J. King, et al.. (2005). Initial Results of Scientific Drilling on Lake Malawi, East African Rift. AGU Fall Meeting Abstracts. 2005. 4 indexed citations

14.

Russell, James M., Thomas C. Johnson, & Michael R. Talbot. (2003). A 725 yr cycle in the climate of central Africa during the late Holocene. Geology. 31(8). 677–677. 39 indexed citations

15.

Verschuren, Dirk, Thomas C. Johnson, Hedy Kling, et al.. (2002). History and timing of human impact on Lake Victoria, East Africa. Proceedings of the Royal Society B Biological Sciences. 269(1488). 289–294. 269 indexed citations

16.

Russell, J. M. & Thomas C. Johnson. (2001). The Mid- to Late Holocene History of Lake Edward, Uganda and its Implications for Hydrologic Change in the African Tropics. AGU Fall Meeting Abstracts. 2001. 1 indexed citations

17.

Owen, R. Bernhart, R. Crossley, Thomas C. Johnson, et al.. (1990). Major low levels of Lake Malawi and their implications for speciation rates in cichlid fishes. Proceedings of the Royal Society of London. Series B, Biological sciences. 240(1299). 519–553. 182 indexed citations

18.

Cerling, Thure E., Thomas C. Johnson, John D. Halfman, & Guy S. Lister. (1985). Pore water chemistry of an alkaline rift valley lake: Lake Turkana, Kenya. Geol. Soc. Am., Abstr. Programs; (United States). 17. 3 indexed citations

19.

Johnson, Thomas C.. (1981). Sediment Redistribution by Waves in Lakes, Reservoirs and Embayments. 1307–1317. 30 indexed citations

20.

Johnson, Thomas C. & M. J. Bell. (1979). Volume reduction of low-level radioactive waste. Transactions of the American Nuclear Society. 32.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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