This map shows the geographic impact of J. R. 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 J. R. Johnson with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. R. Johnson more than expected).
This network shows the impact of papers produced by J. R. 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 J. R. Johnson. The network helps show where J. R. Johnson may publish in the future.
Co-authorship network of co-authors of J. R. Johnson
This figure shows the co-authorship network connecting the top 25 collaborators of J. R. Johnson.
A scholar is included among the top collaborators of J. R. 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 J. R. Johnson. J. R. Johnson 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.
Johnson, J. R., et al.. (2019). Mastcam Visible/Near-Infrared Spectrophotometric Observations of the Red Hills Region of Vera Rubin Ridge. LPI. 1313.3 indexed citations
2.
Gasda, P. J., J. L’Haridon, O. Forni, et al.. (2018). Detection of Hydrous Manganese and Iron Oxides with Variable Phosphorus and Magnesium Contents in the Lacustrine Sediments of the Murray Formation, Gale, Mars. Lunar and Planetary Science Conference. 1447.7 indexed citations
3.
Johnson, J. R., et al.. (2018). Overview of Recent Mastcam and MAHLI Visible/Near-Infrared Spectrophotometric Observations: Big Sky to Vera Rubin Ridge. Lunar and Planetary Science Conference. 1354.3 indexed citations
4.
Jaret, S. J., et al.. (2016). Micro-Raman Spectroscopy of Experimentally Shocked Albite. Lunar and Planetary Science Conference. 1530.2 indexed citations
5.
McConnochie, T. H., M. D. Smith, Steve Bender, et al.. (2014). ChemCam Passive Spectroscopy of Atmospheric O2 and H2O. LPICo. 1791. 1328.2 indexed citations
6.
Tokar, R. L., R. C. Wiens, J. Lasue, et al.. (2013). Searching for Chemical Variation Across the Surface of RockNest_3 Using MSL ChemCam Spectra. Lunar and Planetary Science Conference. 1283.1 indexed citations
7.
Foote, E. J., D. A. Paige, Michael K. Shepard, et al.. (2010). Apollo 11 and 16 Soil Bi-directional Solar Reflectance Measurements, Models and LRO Diviner Observations. AGU Fall Meeting Abstracts. 2010.1 indexed citations
8.
Johnson, J. R., Michael K. Shepard, D. A. Paige, E. J. Foote, & W. M. Grundy. (2009). Spectrogoniometric Measurements and Modeling of Apollo 11 Soil 10084. AGUFM. 2010. 1427.5 indexed citations
9.
Foote, E. J., et al.. (2009). The Bidirectional Reflectance of Apollo 11 Soil Sample 10084. 2500.4 indexed citations
10.
Johnson, J. R.. (2007). Thermal Infrared Emissivity Spectra of Experimentally Shocked Andesine. 1353. 3258.2 indexed citations
11.
Calvin, W. M., T. D. Glotch, R. E. Arvidson, et al.. (2006). Directional Emissivity Effects on the Meridiani Plains. 37th Annual Lunar and Planetary Science Conference. 1481.1 indexed citations
12.
Delaney, J. S., M. D. Dyar, F. Hoerz, & J. R. Johnson. (2003). Evidence for Coordination and Redox Changes of Iron in Shocked Feldspar from Synchrotron MicroXANES. Lunar and Planetary Science Conference. 1417.2 indexed citations
13.
Johnson, J. R. & Friedrich Hörz. (2003). Thermal Infrared Spectra of Experimentally Shocked Basalt. AGU Fall Meeting Abstracts. 2003.1 indexed citations
14.
Johnson, J. R., F. Hoerz, P. R. Christensen, & P. G. Lucey. (2001). Thermal Infrared Spectroscopy of Experimentally Shocked Anorthosite and Pyroxenite. 1195.3 indexed citations
15.
Johnson, J. R.. (1999). Thermal Infrared Reflectance and Emission Spectra of Mars-like Dust Coatings on Basalt Substrates. Lunar and Planetary Science Conference. 1214.2 indexed citations
16.
Hawke, B. R., P. G. Lucey, G. J. Taylor, et al.. (1995). Compositional Studies of Lunar Surface Units. 27.1 indexed citations
17.
Larson, S. M., et al.. (1993). Lunar phase function effects on spectral ratios used for resource assessment. NASA Technical Reports Server (NASA). 851.1 indexed citations
18.
Johnson, J. R., S. M. Larson, & R. B. Singer. (1991). Spectral Ratio Methods for Telescopic Lunar TiO2 Mapping. Lunar and Planetary Science Conference. 22. 647.1 indexed citations
19.
Johnson, J. R., U. Fink, Brian A. Smith, & H. J. Reitsema. (1980). Upper Limit of Gaseous CH 4 on Triton.. Bulletin of the American Astronomical Society. 12. 697.3 indexed citations
20.
Poupeau, Gérard & J. R. Johnson. (1976). Time Scale for the Micrometeorite and Solar Flare Maturation of Lunar Soils. Lunar and Planetary Science Conference. 7. 709.1 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.