Publications
Filter Total Items: 335
Hyperspectral surface materials map of quadrangle 3260, Dasht-e-Chah-e-Mazar (419) and Anar Darah (420) quadrangles, Afghanistan, showing carbonates, phyllosilicates, sulfates, altered minerals, and other materials
This map shows the spatial distribution of selected carbonates, phyllosilicates, sulfates, altered minerals, and other materials derived from analysis of airborne HyMap™ imaging spectrometer (hyperspectral) data of Afghanistan collected in late 2007. The map is one in a series of U.S. Geological Survey/Afghanistan Geological Survey quadrangle maps covering Afghanistan.
Flown at an altitude of 5
Authors
Raymond F. Kokaly, Trude V.V. King, Todd M. Hoefen, Keith E. Livo, Michaela R. Johnson, Stuart A. Giles
Hyperspectral surface materials map of quadrangle 3368, Ghazni (515) and Gardez (516) quadrangles, Afghanistan, showing carbonates, phyllosilicates, sulfates, altered minerals, and other materials
This map shows the spatial distribution of selected carbonates, phyllosilicates, sulfates, altered minerals, and other materials derived from analysis of airborne HyMap™ imaging spectrometer (hyperspectral) data of Afghanistan collected in late 2007. The map is one in a series of U.S. Geological Survey/Afghanistan Geological Survey quadrangle maps covering Afghanistan.
Flown at an altitude of 50,
Authors
Raymond F. Kokaly, Trude V.V. King, Todd M. Hoefen, Keith E. Livo, Stuart A. Giles, Michaela R. Johnson
State of the art satellite and airborne marine oil spill remote sensing: Application to the BP Deepwater Horizon oil spill
The vast and persistent Deepwater Horizon (DWH) spill challenged response capabilities, which required accurate, quantitative oil assessment at synoptic and operational scales. Although experienced observers are a spill response's mainstay, few trained observers and confounding factors including weather, oil emulsification, and scene illumination geometry present challenges. DWH spill and impact m
Authors
Ira Leifer, William J. Lehr, Debra Simecek-Beatty, Eliza Bradley, Roger N. Clark, Philip E. Dennison, Yongxiang Hu, Scott Matheson, Cathleen E Jones, Benjamin Holt, Molly Reif, Dar A. Roberts, Jan Svejkovsky, Gregg A. Swayze, Jennifer M. Wozencraft
Spectroscopic remote sensing for material identification, vegetation characterization, and mapping
Identifying materials by measuring and analyzing their reflectance spectra has been an important procedure in analytical chemistry for decades. Airborne and space-based imaging spectrometers allow materials to be mapped across the landscape. With many existing airborne sensors and new satellite-borne sensors planned for the future, robust methods are needed to fully exploit the information content
Authors
Raymond F. Kokaly
Preparation and characterization of "Libby Amphibole" toxicological testing material
The U.S. Environmental Protection Agency (USEPA) began work in Libby, Mont. in 1999 when an Emergency Response Team was sent to investigate local concern and media reports regarding asbestos-contaminated vermiculite. Since that time, the site has been granted Superfund status and site remediation to a safe level of asbestos has been ongoing. The amphibole asbestos from the Vermiculite Mountain ver
Authors
Heather Lowers, Stephen A. Wilson, Todd M. Hoefen, William Benzel, Gregory P. Meeker
Mapping argillic and advanced argillic alteration in volcanic rocks, quartzites, and quartz arenites in the western Richfield 1° x 2 ° quadrangle, southwestern Utah, using ASTER satellite data
The Richfield quadrangle in southwestern Utah is known to contain a variety of porphyry Mo, skarn, polymetallic replacement and vein, alunite, and kaolin resources associated with 27-32 Ma calc-alkaline or 12-23 Ma bimodal volcano-plutonic centers in Neoproterozoic to Mesozoic carbonate and siliciclastic rocks. Four scenes of visible to shortwave-infrared image data acquired by the Advanced Spaceb
Authors
Barnaby W. Rockwell, Albert H. Hofstra
Titan's fluvial valleys: Morphology, distribution, and spectral properties
Titan's fluvial channels have been investigated based on data obtained by the Synthetic Aperture Radar (SAR) instrument and the Visible and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft. In this paper, a database of fluvial features is created based on radar-SAR data aiming to unveil the distribution and the morphologic and spectral characteristics of valleys on Titan on a gl
Authors
M.H. Langhans, R. Jaumann, K. Stephan, R. H. Brown, B. J. Buratti, Roger N. Clark, K. H. Baines, P. D. Nicholson, R. D. Lorenz, Laurence A. Soderblom, J.M. Soderblom, Christophe Sotin, J. W. Barnes, R. Nelson
The Saturnian satellite Rhea as seen by Cassini VIMS
Since the arrival of the Cassini spacecraft at Saturn in June 2004, the Visual and Infrared Mapping Spectrometer has obtained new spectral data of the icy satellites of Saturn in the spectral range from 0.35 to 5.2 μm. Numerous flybys were performed at Saturn’s second largest satellite Rhea, providing a nearly complete coverage with pixel-ground resolutions sufficient to analyze variations of spec
Authors
K. Stephan, R. Jaumann, R. Wagner, Roger N. Clark, D. P. Cruikshank, B. Giese, C. A. Hibbitts, T. Roatsch, K.-D. Matz, R. H. Brown, G. Filacchione, F. Cappacioni, F. Scholten, B. J. Buratti, G. B. Hansen, P. D. Nicholson, K. H. Baines, R.M. Nelson, D. L. Matson
Dissipation of Titans north polar cloud at northern spring equinox
Saturn's Moon Titan has a thick atmosphere with a meteorological cycle. We report on the evolution of the giant cloud system covering its north pole using observations acquired by the Visual and Infrared Mapping Spectrometer onboard the Cassini spacecraft. A radiative transfer model in spherical geometry shows that the clouds are found at an altitude between 30 and 65 km. We also show that the pol
Authors
S. Le Mouelic, P. Rannou, S. Rodriguez, Christophe Sotin, C.A. Griffith, L. Le Corre, J. W. Barnes, R. H. Brown, K. H. Baines, B. J. Buratti, Roger N. Clark, P. D. Nicholson, G. Tobie
A newly discovered impact crater in Titan's Senkyo: Cassini VIMS observations and comparison with other impact features
Senkyo is an equatorial plain on Titan filled with dunes and surrounded by hummocky plateaus. During the Titan targeted flyby T61 on August 25, 2009, the Cassini Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft observed a circular feature, centered at 5.4° N and 341°W, that superimposes the dune fields and a bright plateau. This circular feature, which has been named
Authors
B. J. Buratti, Christophe Sotin, K. Lawrence, R. H. Brown, S. Le Mouelic, J.M. Soderblom, J. Barnes, Roger N. Clark, K. H. Baines, P. D. Nicholson
Simultaneous speciation of arsenic, selenium, and chromium: species, stability, sample preservation, and analysis of ash and soil leachates
An analytical method using high-performance liquid chromatography separation with inductively coupled plasma mass spectrometry (ICP-MS) detection previously developed for the determination of Cr(III) and Cr(VI) has been adapted to allow the determination of As(III), As(V), Se(IV), Se(VI), Cr(III), and Cr(VI) under the same chromatographic conditions. Using this method, all six inorganic species ca
Authors
Ruth E. Wolf, Suzette A. Morman, Philip L. Hageman, Todd M. Hoefen, Geoffrey S. Plumlee
The Moon Mineralogy Mapper (M3) imaging spectrometer for lunar science: Instrument description, calibration, on‐orbit measurements, science data calibration and on‐orbit validation
The NASA Discovery Moon Mineralogy Mapper imaging spectrometer was selected to pursue a wide range of science objectives requiring measurement of composition at fine spatial scales over the full lunar surface. To pursue these objectives, a broad spectral range imaging spectrometer with high uniformity and high signal-to-noise ratio capable of measuring compositionally diagnostic spectral absorptio
Authors
C. Pieters, P. Mouroulis, M. Eastwood, J. Boardman, R.O. Green, T. Glavich, P. Isaacson, D. Barr, M. Annadurai, R. Clark, D. Cate, S. Besse, A. Chatterjee, L. Cheek, J. Combe, D. Dhingra, V. Essandoh, S. Geier, J.N. Goswami, R. Green, V. Haemmerle, J. Head, L. Hovland, S. Hyman, R. Klima, T. Koch, G. Kramer, A.S.K. Kumar, K. Lee, S. Lundeen, E. Malaret, T. McCord, S. McLaughlin, J. Mustard, J. Nettles, N. Petro, K. Plourde, C. Racho, J. Rodriguez, C. Runyon, G. Sellar, C. Smith, H. Sobel, M. Staid, J. Sunshine, L. Taylor, K. Thaisen, S. Tompkins, H. Tseng, G. Vane, P. Varanasi, M. White, D. Wilson