This map shows the geographic impact of J. D. O’Keefe'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 J. D. O’Keefe with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. D. O’Keefe more than expected).
This network shows the impact of papers produced by J. D. O’Keefe. 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 J. D. O’Keefe. The network helps show where J. D. O’Keefe may publish in the future.
Co-authorship network of co-authors of J. D. O’Keefe
This figure shows the co-authorship network connecting the top 25 collaborators of J. D. O’Keefe.
A scholar is included among the top collaborators of J. D. O’Keefe 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 J. D. O’Keefe. J. D. O’Keefe is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Ahrens, Thomas J., et al.. (2001). Planetary impact and shock-induced damage in target rocks. APS. 46(4).
2.
O’Keefe, J. D., Sarah T. Stewart, & Thomas J. Ahrens. (2001). Chicxulub Ejecta Dynamics. 2190.2 indexed citations
3.
Stewart, Sarah T., J. D. O’Keefe, & Thomas J. Ahrens. (2001). The Relationship Between Rampart Crater Morphologies and the Amount of Subsurface Ice. Lunar and Planetary Science Conference. 2092.22 indexed citations
4.
O’Keefe, J. D., Sarah T. Stewart, & Thomas J. Ahrens. (2000). Impacts on Comets and Asteroids. DPS. 32.1 indexed citations
5.
Stewart, Sarah T., J. D. O’Keefe, & Thomas J. Ahrens. (2000). The Role of Subsurface Ice in Rampart Crater Formation. 32.3 indexed citations
6.
O’Keefe, J. D. & Thomas J. Ahrens. (2000). Impact Bulking, Faulting and Ejecta. Lunar and Planetary Science Conference. 1429.3 indexed citations
7.
O’Keefe, J. D. & Thomas J. Ahrens. (1997). Complex Craters: Relationship of Inner Rings to the Impactor and Transient Crater Evolution. LPI. 1043.2 indexed citations
8.
O’Keefe, J. D., Takashi Takata, & Thomas J. Ahrens. (1994). Penetration of Large Bolides into Dense Planetary Atmospheres-Role of Hydrodynamic Instabilities. LPI. 1023.6 indexed citations
9.
O’Keefe, J. D. & Thomas J. Ahrens. (1989). Planetary Impacts: The Effects of Gravity, Size, and Velocity on the Scaling of Crater Geometry and the Transition from Simple to Complex Craters. LPI. 20. 810.1 indexed citations
10.
O’Keefe, J. D. & Thomas J. Ahrens. (1988). Impact Produced Condensate and Droplet Size Distributions. Lunar and Planetary Science Conference. 19. 883.3 indexed citations
11.
O’Keefe, J. D. & Thomas J. Ahrens. (1988). Large Scale Impact on the Earth with an Atmosphere. LPI. 19. 887.1 indexed citations
12.
O’Keefe, J. D. & Thomas J. Ahrens. (1987). Impact Crater Maximum Depth of Penetration and Excavation. Lunar and Planetary Science Conference. 18. 744.1 indexed citations
13.
O’Keefe, J. D. & Thomas J. Ahrens. (1986). Effect of Planetary Gravity and Impact Size on Crater Maximum Penetration and Excavation Depth. Lunar and Planetary Science Conference. 632–633.2 indexed citations
14.
O’Keefe, J. D. & Thomas J. Ahrens. (1985). Sampling of Planetary Surfaces by Oblique Impact Jet Entrainment. Lunar and Planetary Science Conference. 629–630.1 indexed citations
15.
Ahrens, Thomas J. & J. D. O’Keefe. (1984). Shock Vaporization and the Accretion of the Icy Satellites of Jupiter and Saturn. NASA STI Repository (National Aeronautics and Space Administration). 15. 3–4.2 indexed citations
16.
O’Keefe, J. D. & Thomas J. Ahrens. (1981). Impact Mechanics of the Cretaceous-Tertiary Extinction Bolide. LPI. 785–787.3 indexed citations
17.
O’Keefe, J. D. & Thomas J. Ahrens. (1980). Cometary Impact Calculations: Flat Floors, Multirings and Central Peaks. LPI. 830–832.2 indexed citations
18.
O’Keefe, J. D. & Thomas J. Ahrens. (1978). Late Stage Crater Flows and the Effect of Strength on Transient Crater Depth. Lunar and Planetary Science Conference. 823–825.1 indexed citations
19.
O’Keefe, J. D. & Thomas J. Ahrens. (1976). Distribution of Initial Impact Ejecta. Lunar and Planetary Science Conference. 7. 648.1 indexed citations
20.
O’Keefe, J. D. & Thomas J. Ahrens. (1975). Shock Metamorphic Effects From A Basin-Forming Impact on the Moon. Lunar and Planetary Science Conference. 6. 622.1 indexed citations
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.