R. Clark

Publications742
h-index85
Citations26,553
Highly Influential Citations1,406
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High spectral resolution reflectance spectroscopy of minerals
The reflectance spectra of minerals are studied as a function of spectral resolution in the range from 0.2 to 3.0 {mu}m. Selected absorption bands were studied at resolving powers… Expand
USGS Digital Spectral Library splib06a
Spectroscopic Determination of Leaf Biochemistry Using Band-Depth Analysis of Absorption Features and Stepwise Multiple Linear Regression
Abstract We develop a new method for estimating the biochemistry of plant material using spectroscopy. Normalized band depths calculated from the continuum-removed reflectance spectra of dried and… Expand
Reflectance spectroscopy - Quantitative analysis techniques for remote sensing applications. [in planetary surface geology]
Several methods for the analysis of remotely sensed reflectance data are compared, including empirical methods and scattering theories, both of which are important for solving remote sensing… Expand
Imaging spectroscopy: Earth and planetary remote sensing with the USGS Tetracorder and expert systems
[1] Imaging spectroscopy is a tool that can be used to spectrally identify and spatially map materials based on their specific chemical bonds. Spectroscopic analysis requires significantly more… Expand
Identification of hydrated silicate minerals on Mars using MRO‐CRISM: Geologic context near Nili Fossae and implications for aqueous alteration
The Noachian terrain west of the Isidis basin hosts a diverse collection of alteration minerals in rocks comprising varied geomorphic units within a 100,000 km2 region in and near the Nili Fossae.… Expand
Detection of Adsorbed Water and Hydroxyl on the Moon
  • R. Clark
  • Chemistry, Medicine
  • Science
  • 1 September 2009
TLDR
Space-based spectroscopic measurements provide evidence for water or hydroxyl (OH) on the surface of the Moon and imply that solar wind is depositing and/or somehow forming water and OH in minerals near the lunar surface, and that this trapped water is dynamic. Expand
Identification of a basaltic component on the Martian surface from Thermal Emission Spectrometer data
The Mars Global Surveyor Thermal Emission Spectrometer (TES) instrument collected 4.8×106 spectra of Mars during the initial aerobraking and science-phasing periods of the mission (September 14,… Expand
Using Imaging Spectroscopy To Map Acidic Mine Waste
The process of pyrite oxidation at the surface of mine waste may produce acidic water that is gradually neutralized as it drains away from the waste, depositing different Fe-bearing secondary… Expand
State of the art satellite and airborne marine oil spill remote sensing: Application to the BP Deepwater Horizon oil spill
Abstract The vast and persistent Deepwater Horizon (DWH) spill challenged response capabilities, which required accurate, quantitative oil assessment at synoptic and operational scales. Although… Expand
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