Publications
Products (journal articles, reports, fact sheets) authored by current and past scientists are listed below. Please check the USGS Pubs Warehouse for other USGS publications.
Filter Total Items: 1913
Deciphering igneous and metamorphic events in high-grade rocks of the Wilmington complex, Delaware: Morphology, cathodoluminescence and backscattered electron zoning, and SHRIMP U-Pb geochronology of zircon and monazite Deciphering igneous and metamorphic events in high-grade rocks of the Wilmington complex, Delaware: Morphology, cathodoluminescence and backscattered electron zoning, and SHRIMP U-Pb geochronology of zircon and monazite
High-grade rocks of the Wilmington Complex, northern Delaware and adjacent Maryland and Pennsylvania, contain morphologically complex zircons that formed through both igneous and metamorphic processes during the development of an island-arc complex and suturing of the arc to Laurentia. The arc complex has been divided into several members, the protoliths of which include both intrusive...
Authors
J. N. Aleinikoff, W.S. Schenck, M.O. Plank, L.A. Srogi, C.M. Fanning, S.L. Kamo, H. Bosbyshell
On the discovery of CO nighttime emissions on Titan by Cassini/VIMS: Derived stratospheric abundances and geological implications On the discovery of CO nighttime emissions on Titan by Cassini/VIMS: Derived stratospheric abundances and geological implications
We present a quantitative analysis of CO thermal emissions discovered on the nightside of Titan by Baines et al. [2005. The atmospheres of Saturn and Titan in the near-infrared: First results of Cassini/VIMS. Earth, Moon, and Planets, 96, 119-147]. in Cassini/VIMS spectral imagery. We identify these emission features as the P and R branches of the 1-0 vibrational band of carbon monoxide...
Authors
K. H. Baines, P. Drossart, M. A. Lopez-Valverde, S.K. Atreya, Christophe Sotin, T.W. Momary, R. H. Brown, B. J. Buratti, R. N. Clark, P. D. Nicholson
Classification of leafy spurge with earth observing-1 advanced land imager Classification of leafy spurge with earth observing-1 advanced land imager
Leafy spurge (Euphorbia esula L.) is an invasive exotic plant that can completely displace native plant communities. Automated techniques for monitoring the location and extent of leafy spurge, especially if available on a seasonal basis, could add greatly to the effectiveness of control measures. As part of a larger study including multiple sensors, this study examines the utility of...
Authors
S. Stitt, R. Root, K. Brown, S. Hager, C. Mladinich, G.L. Anderson, K. Dudek, M.R. Bustos, R. Kokaly
Composition and physical properties of Enceladus' surface Composition and physical properties of Enceladus' surface
Observations of Saturn's satellite Enceladus using Cassini's Visual and Infrared Mapping Spectrometer instrument were obtained during three flybys of Enceladus in 2005. Enceladus' surface is composed mostly of nearly pure water ice except near its south pole, where there are light organics, CO2, and amorphous and crystalline water ice, particularly in the region dubbed the "tiger stripes...
Authors
R. H. Brown, R. N. Clark, B. J. Buratti, D. P. Cruikshank, J. W. Barnes, R.M.E. Mastrapa, J. Bauer, S. Newman, T. Momary, K. H. Baines, G. Bellucci, F. Capaccioni, P. Cerroni, M. Combes, A. Coradini, P. Drossart, V. Formisano, R. Jaumann, Y. Langavin, D. L. Matson, T. B. McCord, R.M. Nelson, P. D. Nicholson, B. Sicardy, Christophe Sotin
High-resolution CASSINI-VIMS mosaics of Titan and the icy Saturnian satellites High-resolution CASSINI-VIMS mosaics of Titan and the icy Saturnian satellites
The Visual Infrared Mapping Spectrometer (VIMS) onboard the CASSINI spacecraft obtained new spectral data of the icy satellites of Saturn after its arrival at Saturn in June 2004. VIMS operates in a spectral range from 0.35 to 5.2 ??m, generating image cubes in which each pixel represents a spectrum consisting of 352 contiguous wavebands. As an imaging spectrometer VIMS combines the
Authors
R. Jaumann, K. Stephan, R. H. Brown, B. J. Buratti, R. N. Clark, T. B. McCord, A. Coradini, F. Capaccioni, G. Filacchione, P. Cerroni, K. H. Baines, G. Bellucci, J.-P. Bibring, M. Combes, D. P. Cruikshank, P. Drossart, V. Formisano, Y. Langevin, D. L. Matson, R.M. Nelson, P. D. Nicholson, B. Sicardy, Christophe Sotin, L. A. Soderblom, C. Griffith, K.-D. Matz, Th. Roatsch, F. Scholten, C.C. Porco
Evidence for a polar ethane cloud on Titan Evidence for a polar ethane cloud on Titan
Spectra from Cassini's Visual and Infrared Mapping Spectrometer reveal the presence of a vast tropospheric cloud on Titan at latitudes 51?? to 68?? north and all longitudes observed (10?? to 190?? west). The derived characteristics indicate that this cloud is composed of ethane and forms as a result of stratospheric subsidence and the particularly cool conditions near the moon's north...
Authors
C.A. Griffith, P. Penteado, P. Rannou, R. Brown, V. Boudon, K. H. Baines, R. Clark, P. Drossart, B. Buratti, P. Nicholson, C.P. McKay, A. Coustenis, A. Negrao, R. Jaumann
Development and implementation of software systems for imaging spectroscopy Development and implementation of software systems for imaging spectroscopy
Specialized software systems have played a crucial role throughout the twenty-five year course of the development of the new technology of imaging spectroscopy, or hyperspectral remote sensing. By their very nature, hyperspectral data place unique and demanding requirements on the computer software used to visualize, analyze, process and interpret them. Often described as a marriage of...
Authors
J.W. Boardman, R. N. Clark, A.S. Mazer, L.L. Biehl, F.A. Kruse, J. Torson, K. Staenz
Cassini observations of flow-like features in western Tui Regio, Titan Cassini observations of flow-like features in western Tui Regio, Titan
A large (>3 ?? 104 km2), lobate, 5-??m-bright region seen by Cassini on Titan's leading equatorial region is best explained as a flow field. We discuss observations from the Visual and Infrared Mapping Spectrometer and Imaging Science Subsystem of the feature and present a map of the field. We establish relative ages of flow features and discuss possible formation mechanisms and the...
Authors
J. W. Barnes, R. H. Brown, J. Radebaugh, B. J. Buratti, Christophe Sotin, S. Le Mouelic, S. Rodriguez, E. P. Turtle, J. Perry, R. Clark, K. H. Baines, P. D. Nicholson
Cassini/VIMS hyperspectral observations of the HUYGENS landing site on Titan Cassini/VIMS hyperspectral observations of the HUYGENS landing site on Titan
Titan is one of the primary scientific objectives of the NASA-ESA-ASI Cassini-Huygens mission. Scattering by haze particles in Titan's atmosphere and numerous methane absorptions dramatically veil Titan's surface in the visible range, though it can be studied more easily in some narrow infrared windows. The Visual and Infrared Mapping Spectrometer (VIMS) instrument onboard the Cassini...
Authors
S. Rodriguez, S. Le Mouelic, Christophe Sotin, H. Clenet, R. N. Clark, B. Buratti, R. H. Brown, T. B. McCord, P. D. Nicholson, K. H. Baines
The future of imaging spectroscopy - Prospective technologies and applications The future of imaging spectroscopy - Prospective technologies and applications
Spectroscopy has existed for more than three centuries now. Nonetheless, significant scientific advances have been achieved. We discuss the history of spectroscopy in relation to emerging technologies and applications. Advanced focal plane arrays, optical design, and intelligent on-board logic are prime prospective technologies. Scalable approaches in pre-processing of imaging...
Authors
M.E. Schaepman, R.O. Green, S.G. Ungar, B. Curtiss, J. Boardman, A.J. Plaza, B.-C. Gao, S. Ustin, R. Kokaly, J.R. Miller, S. Jacquemoud, E. Ben-Dor, R. Clark, C. Davis, J. Dozier, D.G. Goodenough, D. Roberts, G. Swayze, E.J. Milton, Alexander F.H. Goetz
Evaluating minerals of environmental concern using spectroscopy Evaluating minerals of environmental concern using spectroscopy
Imaging spectroscopy has been successfully used to aid researchers in characterizing potential environmental impacts posed by acid-rock drainage, ore-processing dust on mangroves, and asbestos in serpentine mineral deposits and urban dust. Many of these applications synergistically combine field spectroscopy with remote sensing data, thus allowing more-precise data calibration, spectral...
Authors
G.A. Swayze, R. N. Clark, C.T. Higgins, R.F. Kokaly, K. Eric Livo, T.M. Hoefen, C. Ong, F.A. Kruse