Search Results - "Clark, Roger N"

Detection of Adsorbed Water and Hydroxyl on the Moon by Clark, Roger N

“…Data from the Visual and Infrared Mapping Spectrometer (VIMS) on Cassini during its flyby of the Moon in 1999 show a broad absorption at 3 micrometers due to…”
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Nature and degree of aqueous alteration in CM and CI carbonaceous chondrites by Takir, Driss, Emery, Joshua P., Mcsween Jr, Harry Y., Hibbitts, Charles A., Clark, Roger N., Pearson, Neil, Wang, Alian

“…We investigated the petrologic, geochemical, and spectral parameters that relate to the type and degree of aqueous alteration in nine CM chondrites and one CI…”
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Orbital Identification of Carbonate-Bearing Rocks on Mars by Ehlmann, Bethany L, Mustard, John F, Murchie, Scott L, Poulet, Francois, Bishop, Janice L, Brown, Adrian J, Calvin, Wendy M, Clark, Roger N, Marais, David J. Des, Milliken, Ralph E, Roach, Leah H, Roush, Ted L, Swayze, Gregg A, Wray, James J

“…Geochemical models for Mars predict carbonate formation during aqueous alteration. Carbonate-bearing rocks had not previously been detected on Mars' surface,…”
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Thermal removal from near-infrared imaging spectroscopy data of the Moon by Clark, Roger N., Pieters, Carlé M., Green, Robert O., Boardman, J. W., Petro, Noah E.

“…In the near‐infrared from about 2 μm to beyond 3 μm, the light from the Moon is a combination of reflected sunlight and emitted thermal emission. There are…”
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The surface composition of Iapetus: Mapping results from Cassini VIMS by Clark, Roger N., Cruikshank, Dale P., Jaumann, Ralf, Brown, Robert H., Stephan, Katrin, Dalle Ore, Cristina Morea, Eric Livo, K., Pearson, Neil, Curchin, John M., Hoefen, Todd M., Buratti, Bonnie J., Filacchione, Gianrico, Baines, Kevin H., Nicholson, Philip D.

“…► Iapetus’ surface is mainly composed of H2O ice, CO2, metallic iron, and iron oxide. ► Bound H2O, H2 and/or OH-bearing minerals, and trace organics are also…”
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Evidence for low-grade metamorphism, hydrothermal alteration, and diagenesis on Mars from phyllosilicate mineral assemblages by Ehlmann, Bethany L, Mustard, John F, Clark, Roger N, Swayze, Gregg A, Murchie, Scott L

“…The enhanced spatial and spectral resolution provided by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the Mars Reconnaissance Orbiter…”
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Reflectance spectroscopy of organic compounds: 1. Alkanes by Clark, Roger N., Curchin, John M., Hoefen, Todd M., Swayze, Gregg A.

“…Reflectance spectra of the organic compounds comprising the alkane series are presented from the ultraviolet to midinfrared, 0.35 to 15.5 μm. Alkanes are…”
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Discovery of Olivine in the Nili Fossae Region of Mars by Hoefen, Todd M., Clark, Roger N., Bandfield, Joshua L., Smith, Michael D., Pearl, John C., Christensen, Philip R.

“…We have detected a 30,000-square-kilometer area rich in olivine in the Nili Fossae region of Mars. Nili Fossae has been interpreted as a complex of grabens and…”
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Mapping vegetation in Yellowstone National Park using spectral feature analysis of AVIRIS data by Kokaly, Raymond F, Despain, Don G, Clark, Roger N, Livo, K.Eric

“…Knowledge of the distribution of vegetation on the landscape can be used to investigate ecosystem functioning. The sizes and movements of animal populations…”
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Development, importance, and effect of a ground truth correction for the Moon Mineralogy Mapper reflectance data set by Isaacson, Peter J., Petro, Noah E., Pieters, Carle M., Besse, Sebastien, Boardman, Joseph W., Clark, Roger N., Green, Robert O., Lundeen, Sarah, Malaret, Erick, McLaughlin, Stephanie, Sunshine, Jessica M., Taylor, Lawrence A.

“…We evaluate the effect and importance of a ground truth correction for the Moon Mineralogy Mapper (M3) level 2 (reflectance) data set. This correction is…”
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Saturn's north polar cyclone and hexagon at depth revealed by Cassini/VIMS by Baines, Kevin H., Momary, Thomas W., Fletcher, Leigh N., Showman, Adam P., Roos-Serote, Maarten, Brown, Robert H., Buratti, Bonnie J., Clark, Roger N., Nicholson, Philip D.

“…A high-speed cyclonic vortex centered on the north pole of Saturn has been revealed by the visual-infrared mapping spectrometer (VIMS) onboard the…”
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Composition and Physical Properties of Enceladus' Surface by Brown, Robert H, Clark, Roger N, Buratti, Bonnie J, Cruikshank, Dale P, Barnes, Jason W, Mastrapa, Rachel M. E, Bauer, J, Newman, S, Momary, T, Baines, K. H, Bellucci, G, Capaccioni, F, Cerroni, P, Combes, M, Coradini, A, Drossart, P, Formisano, V, Jaumann, R, Langevin, Y, Matson, D. L, McCord, T. B, Nelson, R. M, Nicholson, P. D, Sicardy, B, Sotin, C

“…Observations of Saturn's satellite Enceladus using Cassini's Visual and Infrared Mapping Spectrometer instrument were obtained during three flybys of Enceladus…”
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Improved constraints on hematite refractive index for estimating climatic effects of dust aerosols by Li, Longlei, Mahowald, Natalie M, Gonçalves Ageitos, María, Obiso, Vincenzo, Miller, Ron L, Pérez García-Pando, Carlos, Di Biagio, Claudia, menti, Paola, Brodrick, Philip G, Clark, Roger N, Green, Robert O, Kokaly, Raymond, Swayze, Gregg, Thompson, David R

“…Uncertainty in desert dust composition poses a big challenge to understanding Earth’s climate across different epochs. Of particular concern is hematite, an…”
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Infrared spectroscopic characterization of the low-albedo materials on Iapetus by Dalle Ore, Cristina Morea, Cruikshank, Dale P., Clark, Roger N.

“…► We analyze the spectral signature of the dark materials on Iapetus. ► We find two distinct kinds of hydrocarbon bands in a unique combination. ► The…”
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Mapping and interpretation of Sinlap crater on Titan using Cassini VIMS and RADAR data by Le Mouélic, Stéphane, Paillou, Philippe, Janssen, Michael A., Barnes, Jason W., Rodriguez, Sébastien, Sotin, Christophe, Brown, Robert H., Baines, Kevin H., Buratti, Bonnie J., Clark, Roger N., Crapeau, Marc, Encrenaz, Pierre J., Jaumann, Ralf, Geudtner, Dirk, Paganelli, Flora, Soderblom, Laurence, Tobie, Gabriel, Wall, Steve

“…Only a few impact craters have been unambiguously detected on Titan by the Cassini‐Huygens mission. Among these, Sinlap is the only one that has been observed…”
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Isotopic ratios of Saturn's rings and satellites: Implications for the origin of water and Phoebe by Clark, Roger N., Brown, Robert H., Cruikshank, Dale P., Swayze, Gregg A.

“…•Deuterium and carbon 13 are detected in the rings and on satellite surfaces in the Saturn system.•New methods are presented for deriving isotopic ratios from…”
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Quantifying uncertainty for remote spectroscopy of surface composition by Thompson, David R., Braverman, Amy, Brodrick, Philip G., Candela, Alberto, Carmon, Nimrod, Clark, Roger N., Connelly, David, Green, Robert O., Kokaly, Raymond F., Li, Longlei, Mahowald, Natalie, Miller, Ronald L., Okin, Gregory S., Painter, Thomas H., Swayze, Gregg A., Turmon, Michael, Susilouto, Jouni, Wettergreen, David S.

“…Remote surface measurements by imaging spectrometers play an important role in planetary and Earth science. To make these measurements, investigators calibrate…”
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Identification of hydrated silicate minerals on Mars using MRO-CRISM: Geologic context near Nili Fossae and implications for aqueous alteration by Ehlmann, Bethany L., Mustard, John F., Swayze, Gregg A., Clark, Roger N., Bishop, Janice L., Poulet, Francois, Des Marais, David J., Roach, Leah H., Milliken, Ralph E., Wray, James J., Barnouin-Jha, Olivier, Murchie, Scott L.

“…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…”
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A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter by Murchie, Scott L., Mustard, John F., Ehlmann, Bethany L., Milliken, Ralph E., Bishop, Janice L., McKeown, Nancy K., Noe Dobrea, Eldar Z., Seelos, Frank P., Buczkowski, Debra L., Wiseman, Sandra M., Arvidson, Raymond E., Wray, James J., Swayze, Gregg, Clark, Roger N., Des Marais, David J., McEwen, Alfred S., Bibring, Jean-Pierre

“…Martian aqueous mineral deposits have been examined and characterized using data acquired during Mars Reconnaissance Orbiter's (MRO) primary science phase,…”
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Northern range extensions and biological notes for three decapods in the eastern North Pacific by Drumm, David T, Lauth, Robert R, Clark, Roger N, Orr, James W

“…Examination of invertebrate vouchers collected during bottom trawl surveys conducted by the National Oceanic and Atmospheric Administration's National Marine…”
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