Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5599
Road to the kingdom: A bedrock transect across the Pre-Silurian Rowe-Hawley Belt in central Vermont Road to the kingdom: A bedrock transect across the Pre-Silurian Rowe-Hawley Belt in central Vermont
No abstract available.
Authors
Jonathan Kim, Marjorie H. Gale, R. Coish, Jo Laird, Gregory J. Walsh
Identifying 5 years of land cover change across the nation: Updating NLCD 2001 to 2006 through image change detection Identifying 5 years of land cover change across the nation: Updating NLCD 2001 to 2006 through image change detection
No abstract available.
Authors
George Z. Xian, Collin G. Homer
The Shawangunk and Martinsburg Formations revisited; sedimentology, stratigraphy, mineralogy, geochemistry, structure and paleontology The Shawangunk and Martinsburg Formations revisited; sedimentology, stratigraphy, mineralogy, geochemistry, structure and paleontology
In southeastern New York Middle Silurian Shawangunk Formation (Figure 1), containing gray conglomerate, sandstone and shale, lies unconformably above the Ordovician Martinsburg Formation, consisting of shales and graywackes. In southwestern New York, near the Port Jervis area, The Shawangunk Formation is overlain by the Bloomsburg Red Beds, the same stratigraphic sequence that occurs in
Authors
H. R. Feldman, Jack B. Epstein, John A. Smoliga
TerraLook: A GIS-ready time-series of satellite imagery TerraLook: A GIS-ready time-series of satellite imagery
The goal of TerraLook is to provide satellite images that anyone can use to see changes in the Earth's surface over time. Landsat and other satellites have been collecting images of the Earth from Space for more than 35 years. TerraLook allows users to create their own collections of georeferenced simulated natural-color JPEG images from Landsat (circa 1975, 1990, 2005) and ASTER (2000...
Authors
Claudia Young, Gary Geller, Eugene A. Fosnight
Fractures, stress and fluid flow prior to stimulation of well 27-15, Desert Peak, Nevada, EGS project Fractures, stress and fluid flow prior to stimulation of well 27-15, Desert Peak, Nevada, EGS project
A suite of geophysical logs has been acquired for structural, fluid flow and stress analysis of well 27-15 in the Desert Peak Geothermal Field, Nevada, in preparation for stimulation and development of an Enhanced Geothermal System (EGS). Advanced Logic Technologies Borehole Televiewer (BHTV) and Schlumberger Formation MicroScanner (FMS) image logs reveal extensive drilling-induced...
Authors
Nicholas C. Davatzes, Stephen H. Hickman
Hydrogeologic characteristics and water levels of Wilcox aquifer in southwestern and northeastern Arkansas Hydrogeologic characteristics and water levels of Wilcox aquifer in southwestern and northeastern Arkansas
The Wilcox Group of Eocene and Paleocene age is located throughout most of southern and eastern Arkansas. The Wilcox Group in southern Arkansas is undifferentiated, while in northeastern Arkansas, the Wilcox Group is subdivided into three units: Flour Island, Fort Pillow Sand, and Old Breastworks Formation. The Wilcox Group crops out in southwestern Arkansas in discontinuous, 1 to 3 mi...
Authors
Aaron L. Pugh, Tony P. Schrader
Status and conservation of lampreys in California Status and conservation of lampreys in California
Abstract.—Lampreys are among the least studied group of fishes in California. At least seven species inhabit freshwater habitats within the state, including the Kern brook lamprey Lampetra hubbsi, a California endemic. Four species are micropredators on fish, Pacific lamprey Entosphenus tridentatus (formerly L. tridentata), river lamprey L. ayresii, Klamath lamprey E. similis (formerly L...
Authors
Peter B. Moyle, Larry R. Brown, Shawn D. Chase, Rebecca M. Quinones
Accuracy assessment of a 300 m global land cover map—The GlobCover experience Accuracy assessment of a 300 m global land cover map—The GlobCover experience
No abstract available.
Authors
Pierre Defourny, L. Schouten, S. Bartalev, S. Bontemps, P. Caccetta, A.J.W. de Wit, C. Di Bella, B. Gerard, Chandra Giri, G. Vond, G.W. Hazeu, A. Heinimann, M. Herold, J. Knoops, G. Jaffrain, R. Latifovic, H. Lin, P. Mayaux, C.W. Mucher, A. Nonguierma, H.-J. Stibig, E. Van Bogaert, C. Vancutsem, P. Bicheron, M. Leroy, O. Arino
Ecosystem modeling based upon remote sensing, site potential, and weather to monitor vegetation responses to climate, management, and disturbances Ecosystem modeling based upon remote sensing, site potential, and weather to monitor vegetation responses to climate, management, and disturbances
No abstract available.
Authors
Bruce K. Wylie, Jennifer Rover, K. Murnaghan, Larry L. Tieszen, Brian Brisco
Labeling landscape changes through automated disturbance vector matching Labeling landscape changes through automated disturbance vector matching
No abstract available.
Authors
Kurtis Nelson, Birgit Peterson