Roger N Clark (Former Employee)
Science and Products
Filter Total Items: 75
Newer views of the Moon: Comparing spectra from Clementine and the Moon Mineralogy Mapper Newer views of the Moon: Comparing spectra from Clementine and the Moon Mineralogy Mapper
The Moon Mineralogy Mapper (M3) provided the first global hyperspectral data of the lunar surface in 85 bands from 460 to 2980 nm. The Clementine mission provided the first global multispectral maps the lunar surface in 11 spectral bands across the ultraviolet-visible (UV-VIS) and near-infrared (NIR). In an effort to understand how M3 improves our ability to analyze and interpret lunar...
Authors
Georgiana Y. Kramer, Sebastian Besse, Jeff Nettles, Jean-Philippe Combe, Roger N. Clark, Carle M. Pieters, Matthew Staid, Joseph Boardman, Robert Green, Thomas B. McCord, Erik Malaret, James W. Head
Hapke modeling of Rhea surface properties through Cassini-VIMS spectra Hapke modeling of Rhea surface properties through Cassini-VIMS spectra
TThe surface properties of the icy bodies in the saturnian system have been investigated by means of the Cassini-VIMS (Visual Infrared Mapping Spectrometer) hyperspectral imager which operates in the 0.35–5.1 μm wavelength range. In particular, we have analyzed 111 full disk hyperspectral images of Rhea ranging in solar phase between 0.08° and 109.8°. These data have been previously...
Authors
M. Ciarniello, F. Capaccioni, G. Filacchione, Roger N. Clark, D. P. Cruikshank, P. Cerroni, A. Coradini, R. H. Brown, B. J. Buratti, F. Tosi, K. Stephan
Evidence for low-grade metamorphism, hydrothermal alteration, and diagenesis on Mars from phyllosilicate mineral assemblages Evidence for low-grade metamorphism, hydrothermal alteration, and diagenesis on Mars from phyllosilicate mineral assemblages
The enhanced spatial and spectral resolution provided by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the Mars Reconnaissance Orbiter (MRO) has led to the discovery of numerous hydrated silicate minerals on Mars, particularly in the ancient, cratered crust comprising the southern highlands. Phases recently identified using visible/near-infrared spectra include...
Authors
Bethany L. Ehlmann, John F Mustard, Roger N. Clark, Gregg A. Swayze, Scott L. Murchie
Remote compositional analysis of lunar olivine-rich lithologies with Moon Mineralogy Mapper (M3) spectra Remote compositional analysis of lunar olivine-rich lithologies with Moon Mineralogy Mapper (M3) spectra
A systematic approach for deconvolving remotely sensed lunar olivine‐rich visible to near‐infrared (VNIR) reflectance spectra with the Modified Gaussian Model (MGM) is evaluated with Chandrayaan‐1 Moon Mineralogy Mapper (M3) spectra. Whereas earlier studies of laboratory reflectance spectra focused only on complications due to chromite inclusions in lunar olivines, we develop a...
Authors
P.J. Isaacson, C.M. Pieters, S. Besse, Roger N. Clark, J.W. Head, R.L. Klima, J.F. Mustard, N.E. Petro, M.I. Staid, J.M. Sunshine, L.A. Taylor, K.G. Thaisen, S. Tompkins
Organic sedimentary deposits in Titan's dry lakebeds: Probable evaporite Organic sedimentary deposits in Titan's dry lakebeds: Probable evaporite
We report the discovery of organic sedimentary deposits at the bottom of dry lakebeds near Titan’s north pole in observations from the Cassini Visual and Infrared Mapping Spectrometer (VIMS). We show evidence that the deposits are evaporitic, making Titan just the third known planetary body with evaporitic processes after Earth and Mars, and is the first that uses a solvent other than...
Authors
J. W. Barnes, J. Bow, J. Schwartz, R. H. Brown, J.M. Soderblom, A. G. Hayes, G. Vixie, S. Le Mouelic, S. Rodriguez, Christophe Sotin, R. Jaumann, K. Stephan, L.A. Soderblom, Roger N. Clark, B. J. Buratti, K. H. Baines, P. D. Nicholson
M3 spectral analysis of lunar swirls and the link between optical maturation and surface hydroxyl formation at magnetic anomalies M3 spectral analysis of lunar swirls and the link between optical maturation and surface hydroxyl formation at magnetic anomalies
We examined the lunar swirls using data from the Moon Mineralogy Mapper (M3). The improved spectral and spatial resolution of M3 over previous spectral imaging data facilitates distinction of subtle spectral differences, and provides new information about the nature of these enigmatic features. We characterized spectral features of the swirls, interswirl regions (dark lanes), and...
Authors
G.Y. Kramer, S. Besse, D. Dhingra, J. Nettles, R. Klima, I. Garrick-Bethell, Roger N. Clark, J. #NAME? Combe, J. W. Head, L.A. Taylor, C.M. Pieters, J. Boardman, T. B. McCord
Science and Products
Filter Total Items: 75
Newer views of the Moon: Comparing spectra from Clementine and the Moon Mineralogy Mapper Newer views of the Moon: Comparing spectra from Clementine and the Moon Mineralogy Mapper
The Moon Mineralogy Mapper (M3) provided the first global hyperspectral data of the lunar surface in 85 bands from 460 to 2980 nm. The Clementine mission provided the first global multispectral maps the lunar surface in 11 spectral bands across the ultraviolet-visible (UV-VIS) and near-infrared (NIR). In an effort to understand how M3 improves our ability to analyze and interpret lunar...
Authors
Georgiana Y. Kramer, Sebastian Besse, Jeff Nettles, Jean-Philippe Combe, Roger N. Clark, Carle M. Pieters, Matthew Staid, Joseph Boardman, Robert Green, Thomas B. McCord, Erik Malaret, James W. Head
Hapke modeling of Rhea surface properties through Cassini-VIMS spectra Hapke modeling of Rhea surface properties through Cassini-VIMS spectra
TThe surface properties of the icy bodies in the saturnian system have been investigated by means of the Cassini-VIMS (Visual Infrared Mapping Spectrometer) hyperspectral imager which operates in the 0.35–5.1 μm wavelength range. In particular, we have analyzed 111 full disk hyperspectral images of Rhea ranging in solar phase between 0.08° and 109.8°. These data have been previously...
Authors
M. Ciarniello, F. Capaccioni, G. Filacchione, Roger N. Clark, D. P. Cruikshank, P. Cerroni, A. Coradini, R. H. Brown, B. J. Buratti, F. Tosi, K. Stephan
Evidence for low-grade metamorphism, hydrothermal alteration, and diagenesis on Mars from phyllosilicate mineral assemblages Evidence for low-grade metamorphism, hydrothermal alteration, and diagenesis on Mars from phyllosilicate mineral assemblages
The enhanced spatial and spectral resolution provided by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the Mars Reconnaissance Orbiter (MRO) has led to the discovery of numerous hydrated silicate minerals on Mars, particularly in the ancient, cratered crust comprising the southern highlands. Phases recently identified using visible/near-infrared spectra include...
Authors
Bethany L. Ehlmann, John F Mustard, Roger N. Clark, Gregg A. Swayze, Scott L. Murchie
Remote compositional analysis of lunar olivine-rich lithologies with Moon Mineralogy Mapper (M3) spectra Remote compositional analysis of lunar olivine-rich lithologies with Moon Mineralogy Mapper (M3) spectra
A systematic approach for deconvolving remotely sensed lunar olivine‐rich visible to near‐infrared (VNIR) reflectance spectra with the Modified Gaussian Model (MGM) is evaluated with Chandrayaan‐1 Moon Mineralogy Mapper (M3) spectra. Whereas earlier studies of laboratory reflectance spectra focused only on complications due to chromite inclusions in lunar olivines, we develop a...
Authors
P.J. Isaacson, C.M. Pieters, S. Besse, Roger N. Clark, J.W. Head, R.L. Klima, J.F. Mustard, N.E. Petro, M.I. Staid, J.M. Sunshine, L.A. Taylor, K.G. Thaisen, S. Tompkins
Organic sedimentary deposits in Titan's dry lakebeds: Probable evaporite Organic sedimentary deposits in Titan's dry lakebeds: Probable evaporite
We report the discovery of organic sedimentary deposits at the bottom of dry lakebeds near Titan’s north pole in observations from the Cassini Visual and Infrared Mapping Spectrometer (VIMS). We show evidence that the deposits are evaporitic, making Titan just the third known planetary body with evaporitic processes after Earth and Mars, and is the first that uses a solvent other than...
Authors
J. W. Barnes, J. Bow, J. Schwartz, R. H. Brown, J.M. Soderblom, A. G. Hayes, G. Vixie, S. Le Mouelic, S. Rodriguez, Christophe Sotin, R. Jaumann, K. Stephan, L.A. Soderblom, Roger N. Clark, B. J. Buratti, K. H. Baines, P. D. Nicholson
M3 spectral analysis of lunar swirls and the link between optical maturation and surface hydroxyl formation at magnetic anomalies M3 spectral analysis of lunar swirls and the link between optical maturation and surface hydroxyl formation at magnetic anomalies
We examined the lunar swirls using data from the Moon Mineralogy Mapper (M3). The improved spectral and spatial resolution of M3 over previous spectral imaging data facilitates distinction of subtle spectral differences, and provides new information about the nature of these enigmatic features. We characterized spectral features of the swirls, interswirl regions (dark lanes), and...
Authors
G.Y. Kramer, S. Besse, D. Dhingra, J. Nettles, R. Klima, I. Garrick-Bethell, Roger N. Clark, J. #NAME? Combe, J. W. Head, L.A. Taylor, C.M. Pieters, J. Boardman, T. B. McCord