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: 1826
Spectroscopic and x-ray diffraction analyses of asbestos in the World Trade Center dust: Asbestos content of the settled dust
On September 17 and 18, 2001, samples of settled dust and airfall debris were collected from 34 sites within a 1-km radius of the WTC collapse site, including a sample from an indoor location unaffected by rainfall, and samples of insulation from two steel beams at Ground Zero. Laboratory spectral and x-ray diffraction analyses of the field samples detected trace levels of serpentine minerals, inc
Authors
Gregg A. Swayze, Roger N. Clark, Stephen J. Sutley, Todd M. Hoefen, Geoffrey S. Plumlee, Gregory P. Meeker, Isabelle Brownfield, Keith E. Livo, Laurie C. Morath
GP Workbench Manual: Technical Manual, User's Guide, and Software Guide
GP Workbench is an open-source general-purpose geophysical data processing software package written primarily for ground penetrating radar (GPR) data. It also includes support for several USGS prototype electromagnetic instruments such as the VETEM and ALLTEM. The two main programs in the package are GP Workbench and GP Wave Utilities. GP Workbench has routines for filtering, gridding, and migrati
Authors
Charles P. Oden, Craig W. Moulton
Geophysical Studies Based on Gravity and Seismic Data of Tule Desert, Meadow Valley Wash, and California Wash Basins, Southern Nevada
Gravity and seismic data from Tule Desert, Meadow Valley Wash, and California Wash, Nevada, provide insight into the subsurface geometry of these three basins that lie adjacent to rapidly developing areas of Clark County, Nevada. Each of the basins is the product of Tertiary extension accommodated with the general form of north-south oriented, asymmetrically-faulted half-grabens. Geophysical inver
Authors
Daniel S. Scheirer, William R. Page, John J. Miller
Aeromagnetic Survey in Western Afghanistan: A Web Site for Distribution of Data
Aeromagnetic and related data were digitized from 1976 magnetic field
and survey route location maps of western Afghanistan. The magnetic
field data were digitized along contour lines from 33 maps in a series
entitled 'Map of Magnetic Field of Afghanistan (Western Area) Delta-Ta
Isolines,' compiled by V. A. Cnjagev and A. F. Bukhmastov. The survey
route locatio
Authors
Ronald E. Sweeney, Robert P. Kucks, Patricia L. Hill, Carol A. Finn
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 pole. Prefer
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
The atmospheres of Saturn and Titan in the near-infrared: First results of Cassini/Vims
The wide spectral coverage and extensive spatial, temporal, and phase-angle mapping capabilities of the Visual Infrared Mapping Spectrometer (VIMS) onboard the Cassini-Huygens Orbiter are producing fundamental new insights into the nature of the atmospheres of Saturn and Titan. For both bodies, VIMS maps over time and solar phase angles provide information for a multitude of atmospheric constituen
Authors
K. H. Baines, T.W. Momary, B. J. Buratti, D. L. Matson, R.M. Nelson, P. Drossart, B. Sicardy, V. Formisano, G. Bellucci, A. Coradini, C. Griffith, R. H. Brown, J.-P. Bibring, Y. Langevin, F. Capaccioni, P. Cerroni, R. N. Clark, M. Combes, D. P. Cruikshank, R. Jaumann, T.B. McCordt, V. Mennella, P. D. Nicholson, Christophe Sotin
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 mapping the
Authors
S. Stitt, R. Root, K. Brown, S. Hager, C. Mladinich, G.L. Anderson, K. Dudek, M.R. Bustos, R. Kokaly
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 implications o
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
Ostracods and facies of the Early and Middle Frasnian at Devils Gate in Nevada: Relationship to the Alamo Event
In order to document the Alamo Event and to investigate its influence on shallow-marine environments, we undertook a study of ostracods, conodonts, and analysis of the sedimentology of the lower member of the type Devils Gate Limestone, Six major carbonate microfacies (MF1-MF6) ranging from open-marine environments below storm wave base to pre-evaporitic supratidal lagoons were recognized. The sed
Authors
J.-G. Casier, I. Berra, Ewa Olempska, Charles Sandberg, A. Preat
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 (CO) near
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
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 the two tec
Authors
J.W. Boardman, R. N. Clark, A.S. Mazer, L.L. Biehl, F.A. Kruse, J. Torson, K. Staenz
Titan: Preliminary results on surface properties and photometry from VIMS observations of the early flybys
Cassini observations of the surface of Titan offer unprecedented views of its surface through atmospheric windows in the 1-5 ??m region. Images obtained in windows for which the haze opacity is low can be used to derive quantitative photometric parameters such as albedo and albedo distribution, and physical properties such as roughness and particle characteristics. Images from the early Titan flyb
Authors
B. J. Buratti, Christophe Sotin, R. H. Brown, M.D. Hicks, R. N. Clark, J. A. Mosher, T. B. McCord, R. Jaumann, K. H. Baines, P. D. Nicholson, T. Momary, D.P. Simonelli, B. Sicardy