Conference Papers
Science Quality and Integrity
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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.
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Wild, scenic and rapid trip down the Colorado River trough: Desert Symposium field trip
This rapid trip will explore wild fluvial and tectonic events resulting in scenic and rugged topography. The extreme differences in elevation caused valleys to be choked by alluvium and incised by the Colorado River drainage system.
Authors
R. E. Reynolds, J. Faulds, P.K. House, Keith A. Howard, Daniel V. Malmon, C. F. Miller, P. A. Pearthree
Integrating image and GIS processing to map a complex landscape with national vegetation classification system protocols and high spatial resolution image data
No abstract available.
Authors
Amina Rangoonwala, Elijah Ramsey
Sources of seasonal water-supply forecast skill in the western US
Many water supplies in the western US depend on water that is stored in snowpacks and reservoirs during the cool, wet seasons for release and use in the following warm seasons. Managers of these water supplies must decide each winter how much water will be available in subsequent seasons so that they can proactively capture and store water and can make reliable commitments for later deliveries. Lo
Authors
Michael Dettinger
Two middle Pleistocene glacial-interglacial cycles from the Valle Grande, Jemez Mountains, northern New Mexico
A long-lived middle Pleistocene lake formed in the Valle Grande, a large moat valley of the Valles caldera innorthern New Mexico, when a post-caldera eruption (South Mountain rhyolite) dammed the drainage out of the caldera. Thedeposits of this lake were cored in May 2004 (GLAD5 project, hole VC-3) and 81 m of mostly lacustrine silty mud wererecovered. A tentative chronology has been established f
Authors
Peter J. Fawcett, Jeff Heikoop, Fraser Goff, R. Scott Anderson, L. Donohoo-Hurley, John William Geissman, Giday WoldeGabriel, Craig D. Allen, Catrina M. Johnson, Susan J. Smith, Julianna Fessenden-Rahn
Ontological foundations of transportation data for the National Map (USA)
No abstract available.
Authors
Dalia E. Varanka
Time scales and volumes of large ignimbrite-caldera eruptions in continental arc: Relation to assembly of subvolcanic batholiths
Volcanoes and upper-crustal plutons in diverse geologic settings tend to share common features of mineral and chemical compositions, emplacement age, and magmatic volume. Voluminous silicic ignimbrites associated with caldera sources, widespread components of Cordilleran arcs, have commonly been interpreted as broadly concurrent with assembly of upper-crustal batholiths. Tertiary ignimbrites in th
Authors
Peter W. Lipman
Invasive species management and research using GIS
Geographical Information Systems (GIS) are powerful tools in the field of invasive species management. GIS can be used to create potential distribution maps for all manner of taxa, including plants, animals, and diseases. GIS also performs well in the early detection and rapid assessment of invasive species. Here, we used GIS applications to investigate species richness and invasion patterns in fi
Authors
Tracy R. Holcombe, Thomas J. Stohlgren, Catherine S. Jarnevich
Cause and solution for false upstream boat velocities measured with a StreamPro acoustic doppler current profiler
In 2003, Teledyne RD Instruments introduced the StreamPro acoustic Doppler current profiler which does not include an internal compass. During stationary moving-bed tests the StreamPro often tends to swim or kite from the end of the tether (the instrument rotates then moves laterally in the direction of the rotation). Because the StreamPro does not have an internal compass, it cannot account for t
Authors
David S. Mueller, Mike S. Rehmel, Chad R. Wagner
Ultrahigh resolution topographic mapping of Mars with HiRISE stereo images: Methods and first results
The Mars Reconnaissance Orbiter (MRO) arrived at Mars on 10 March 2006 and began its primary science phase in November. The High Resolution Imaging Science Experiment (HiRISE) on MRO is the largest, most complex camera ever flown to another planet. Plans call for this scanner to image roughly 1% of Mars by area at a pixel scale of 0.3 m during the next Mars year. Among the thousands of images w
Authors
Randolph L. Kirk, Elpitha Howington-Kraus, Mark R. Rosiek, Debbie Cook, Jeffery A. Anderson, Kris J. Becker, Brent A. Archinal, Laszlo P. Keszthelyi, R. King, Alfred S. McEwen
Cartography for lunar exploration: Current status and planned missions
The initial spacecraft exploration of the Moon in the 1960s–70s yielded extensive data, primarily in the form of film and television images, that were used to produce a large number of hardcopy maps by conventional techniques. A second era of exploration, beginning in the early 1990s, has produced digital data including global multispectral imagery and altimetry, from which a new generation of di
Authors
Randolph L. Kirk, Brent A. Archinal, Lisa R. Gaddis, Mark R. Rosiek
High-resolution climate records of the past 2,400 years from the offshore of northernmost California and central Oregon
High resolution diatom and pollen data from piston core TN062 0550 off northernmost California, and Kasten core WW7710A-26 off coastal Oregon, are compiled for the past 2,400 years. Diatom proxy data for Fall SST from both cores record warm SST's in the intervals from ca. AD 400 to 600, and from ca. AD 1050 to 1300 (later part of the Medieval Warm Period). The intervening AD 650 to 1000 interval,
Authors
John A. Barron, Linda E. Heusser
Gas generation from groundwater interaction with an iron treatment wall, Fry Canyon, Utah, USA
Gas generation from groundwater interaction with a field-scale zero-valent iron permeable reactive barrier (ZVI PRB) was measured and simulated with the geochemical reaction path model PHREEQC. Due to anaerobic corrosion of Fe (0) within the ZVI PRB, measured total dissolved gas (TDG) pressure exceeded hydrostatic pressure resulting in ebullition and depletion in dissolved noble gases. Geochemical
Authors
D.L. Naftz, B.J. Stolp, C.C. Fuller, T. Snyder, M. Wilkins