This map shows the geographic impact of H. Frey'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 H. Frey with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Frey more than expected).
This network shows the impact of papers produced by H. Frey. 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 H. Frey. The network helps show where H. Frey may publish in the future.
Co-authorship network of co-authors of H. Frey
This figure shows the co-authorship network connecting the top 25 collaborators of H. Frey.
A scholar is included among the top collaborators of H. Frey 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 H. Frey. H. Frey is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Frey, H., et al.. (2016). U-Th zircon chronology reveals protracted cold storage and subsequent rejuvenation in magma reservoirs beneath Dominica, Lesser Antilles. AGU Fall Meeting Abstracts. 2016.
4.
Frey, H., et al.. (2015). Fingerprinting young ignimbrites in Dominica (Lesser Antilles): Constraints from bulk REEs, apatite chemistry, and U-Th zircon chronology. AGU Fall Meeting Abstracts. 2015.1 indexed citations
5.
Frey, H., Lauren Edgar, & R. J. Lillis. (2007). Very Large Visible and Buried Impact Basins on Mars: Implications for Internal and Crustal Evolution and the Late Heavy Bombardment in the Inner Solar System. 1353. 3070.6 indexed citations
6.
Frey, H.. (2005). Production of andesite in the western Mexican arc: Constraints from argon chronology, volume analysis, and geochemistry.. Deep Blue (University of Michigan).1 indexed citations
7.
Zimbelman, J. R., et al.. (1999). Medusae Fossae Formation, Mars: an Assessment of Possible Origins Utilizing Early Results from Mars Global Surveyor. Lunar and Planetary Science Conference. 1652.3 indexed citations
8.
Frey, H., S. E. H. Sakimoto, & J. H. Roark. (1999). MOLA Topographic Structure of the Isidis and Utopia Impact Basins. 1500.7 indexed citations
9.
Frey, H., et al.. (1998). Viscosity of Venusian Lava Flows: Constraints from Fractal Dimension and Chemical Composition. LPI. 1055.2 indexed citations
10.
Frey, H. & J. H. Roark. (1995). A Multi-ring Impact Basin in Thaumasia. LPI. 26. 425.3 indexed citations
11.
Frey, H., et al.. (1988). Resurfacing Events in the Lunae Planum-Xanthe Terra Region of Mars. Lunar and Planetary Science Conference. 19. 413.1 indexed citations
12.
Frey, H., et al.. (1988). Resurfacing Events in the Tempe Terra Region of Mars. LPI. 19. 415.2 indexed citations
13.
Frey, H., et al.. (1986). Crater Counts in the Transition Zone in Eastern Mars: Evidence for Common Resurfacing Events. LPI. 243–244.3 indexed citations
14.
Frey, H., et al.. (1985). The Highland Boundary Scarp on Mars: Distribution of Characteristic Structures. Lunar and Planetary Science Conference. 252–253.1 indexed citations
15.
Frey, H., et al.. (1985). Distribution and Properties of Large Symmetric Knobs on Mars. LPI. 250–251.1 indexed citations
16.
Frey, H., et al.. (1984). Systematic Variations in the Properties of Subkilometer Cones in Acidalia Planitia. LPI. 272–273.1 indexed citations
17.
Frey, H., et al.. (1983). Morphometric Analysis and the Origin of Martian Tributary Networks. LPI. 126–127.1 indexed citations
18.
Frey, H., et al.. (1983). Small Cones in Cydonia: Distribution and Properties Related to Background Terrain. Lunar and Planetary Science Conference. 215–216.1 indexed citations
19.
Frey, H., et al.. (1981). Small cones on Mars: Distribution and properties. LPICo. 441. 84.2 indexed citations
20.
Frey, H., et al.. (1975). Elysium and Martian Tectonics.. Bulletin of the American Astronomical Society. 7. 468.1 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.