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.
USGS Digital Spectral Library splib06a
2007676 citationsR. N. Clark, Gregg A. Swayze et al.Data seriesprofile →
USGS Spectral Library Version 7
2017483 citationsRaymond F. Kokaly, R. N. Clark et al.Data seriesprofile →
Citations per year, relative to Todd M. Hoefen Todd M. Hoefen (= 1×)
peers
James K. Crowley
Countries citing papers authored by Todd M. Hoefen
Since
Specialization
Citations
This map shows the geographic impact of Todd M. Hoefen'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 Todd M. Hoefen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Todd M. Hoefen more than expected).
This network shows the impact of papers produced by Todd M. Hoefen. 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 Todd M. Hoefen. The network helps show where Todd M. Hoefen may publish in the future.
Co-authorship network of co-authors of Todd M. Hoefen
This figure shows the co-authorship network connecting the top 25 collaborators of Todd M. Hoefen.
A scholar is included among the top collaborators of Todd M. Hoefen 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 Todd M. Hoefen. Todd M. Hoefen is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Hoefen, Todd M., Raymond F. Kokaly, Karen D. Kelley, et al.. (2015). Characterizing Geology and Mineralization at High Latitudes in Alaska Using Airborne and Field-Based Imaging Spectrometer Data. AGU Fall Meeting Abstracts. 2015.
5.
Hoefen, Todd M., Raymond F. Kokaly, Gregg A. Swayze, & Keith E. Livo. (2015). Evaluating Field Spectrometer Performance with Transmission Standards: Examples from the USGS Spectral Library and Research Databases. AGU Fall Meeting Abstracts. 2015.1 indexed citations
Hoefen, Todd M., Keith E. Livo, Heather Lowers, et al.. (2014). Characterization of REE-Bearing Minerals and Synthetic Materials Using High Resolution Ultraviolet to Near-Infrared Reflectance Spectroscopy. 2014 AGU Fall Meeting. 2014.1 indexed citations
Clark, R. N., D. P. Cruikshank, C. M. Dalle Ore, et al.. (2011). Composition and Grain Sizes of Dark Material in Saturn's Icy Satellites and Rings. 2011. 1563.4 indexed citations
Kokaly, Raymond F., Sarai C. Piazza, Gregory D. Steyer, et al.. (2010). Characterizing the Impacts of the Deepwater Horizon Oil Spill on Marshland Vegetation, Gulf Coast Louisiana, Using Airborne Imaging Spectroscopy. AGUFM. 2010.1 indexed citations
13.
Clark, R. N., D. P. Cruikshank, R. Jaumann, et al.. (2010). Metallic Iron and Iron Oxide as an Explanation for the Dark Material Observed on Saturn's Icy Satellites and Rings with Cassini VIMS. elib (German Aerospace Center).1 indexed citations
Clark, R. N., J. M. Curchin, R. H. Brown, et al.. (2006). Detection of Widespread Aromatic and Aliphatic Hydrocarbon Deposits on Titan's Surface Observed by Cassini VIMS. AGUFM. 2006.2 indexed citations
16.
Clark, R. N., J. M. Curchin, R. H. Brown, et al.. (2006). Detection of Widespread Aromatic and Aliphatic Hydrocarbon Deposits on Titan's Surface Observed by VIMS and Excess Benzene observed in Titan's Thermosphere Observed by INMS. DPS.1 indexed citations
17.
Clark, R. N., Gregg A. Swayze, Robert A. Wise, et al.. (2003). A Digital Spectral Library for Planetary and Terrestrial Spectroscopy Analysis.4 indexed citations
18.
Hoefen, Todd M. & R. N. Clark. (2001). Compositional Variability of Martian Olivines Using Mars Global Surveyor Thermal Emission Spectra. LPI. 2049.6 indexed citations
19.
Hamilton, V. E., P. R. Christensen, H. Y. McSween, R. N. Clark, & Todd M. Hoefen. (2001). Spectral Variations in MGS TES Data of Nili Fossae: A Possible Source Region for SNC Meteorites on Mars?. Lunar and Planetary Science Conference. 2184.6 indexed citations
20.
Clark, R. N. & Todd M. Hoefen. (2000). Spectral Feature Mapping with Mars Global Surveyor Thermal Emission Spectra: Mineralogic Implications. 32.8 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.