Interactions among wildland fires in a long-established Sierra Nevada natural fire area
B.M. Collins, J.D. Miller, A. E. Thode, M. Kelly, J. W. van Wagtendonk, S.L. Stephens
2009, Ecosystems (12) 114-128
We investigate interactions between successive naturally occurring fires, and assess to what extent the environments in which fires burn influence these interactions. Using mapped fire perimeters and satellite-based estimates of post-fire effects (referred to hereafter as fire severity) for 19 fires burning relatively freely over a 31-year period, we demonstrate...
Geology and geomorphology of Bear Lake Valley and upper Bear River, Utah and Idaho
M.C. Reheis, B.J.C. Laabs, D. S. Kaufman
2009, Special Paper of the Geological Society of America 15-48
Bear Lake, on the Idaho-Utah border, lies in a fault-bounded valley through which the Bear River flows en route to the Great Salt Lake. Surficial deposits in the Bear Lake drainage basin provide a geologic context for interpretation of cores from Bear Lake deposits. In addition to groundwater discharge, Bear...
Diverse lavas from closely spaced volcanoes drawing from a common parent: Emmons Lake Volcanic Center, Eastern Aleutian Arc
M. Mangan, T. Miller, C. Waythomas, F. Trusdell, A. Calvert, P. Layer
2009, Earth and Planetary Science Letters (287) 363-372
Emmons Lake Volcanic Center (ELVC) on the lower Alaskan Peninsula is one of the largest and most diverse volcanic centers in the Aleutian Arc. Since the Middle Pleistocene, eruption of ~ 350 km3 of basalt through rhyolite has produced a 30 km, arc front chain of nested calderas and overlapping...
Field camp: Using traditional methods to train the next generation of petroleum geologists
J.O. Puckette, N.H. Suneson
2009, Special Paper of the Geological Society of America 25-34
The summer field camp experience provides many students with their best opportunity to learn the scientific process by making observations and collecting, recording, evaluating, and interpreting geologic data. Field school projects enhance student professional development by requiring cooperation and interpersonal interaction, report writing to communicate interpretations, and the development of...
The use of fluoride as a natural tracer in water and the relationship to geological features: Examples from the Animas River Watershed, San Juan Mountains, Silverton, Colorado
Dana J. Bove, Katherine Walton-Day, Briant A. Kimball
2009, Geochemistry: Exploration, Environment, Analysis (9) 125-138
Investigations within the Silverton caldera, in southwestern Colorado, used a combination of traditional geological mapping, alteration-assemblage mapping, and aqueous geochemical sampling that showed a relationship between geological and hydrologic features that may be used to better understand the provenance and evolution of the water. Veins containing fluorite, huebnerite, and elevated...
Ultrahigh resolution topographic mapping of Mars with MRO HiRISE stereo images: Meter-scale slopes of candidate Phoenix landing sites
Randolph L. Kirk, Elpitha Howington-Kraus, Mark R. Rosiek, Jeffery A. Anderson, Brent A. Archinal, Kris J. Becker, D.A. Cook, Donna M. Galuszka, Paul E. Geissler, Trent M. Hare, I.M. Holmberg, Laszlo P. Keszthelyi, Bonnie L. Redding, W.A. Delamere, D. Gallagher, J.D. Chapel, Eric M. Eliason, R. King, Alfred S. McEwen
2009, Journal of Geophysical Research E: Planets (114)
The objectives of this paper are twofold: first, to report our estimates of the meter‐to‐decameter‐scale topography and slopes of candidate landing sites for the Phoenix mission, based on analysis of Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) images with a typical pixel scale of 3 m and Mars Reconnaissance...
Geochemical evolution of a high arsenic, alkaline pit-lake in the Mother Lode Gold District, California
Kaye S. Savage, Roger P. Ashley, Dennis K. Bird
2009, Economic Geology (104) 1171-1211
The Harvard orebody at the Jamestown gold mine, located along the Melones fault zone in the southern Mother Lode gold district, California, was mined in an open-pit operation from 1987 to 1994. Dewatering during mining produced a hydrologic cone of depression; recovery toward the premining ground-water configuration produced a...
Plants and ventifacts delineate late Holocene wind vectors in the Coachella Valley, USA
Peter G. Griffiths, R. H. Webb, M. Fisher, Allan Muth
2009, Aeolian Research (1) 63-73
Strong westerly winds that emanate from San Gorgonio Pass, the lowest point between Palm Springs and Los Angeles, California, dominate aeolian transport in the Coachella Valley of the western Sonoran Desert. These winds deposit sand in coppice dunes that are critical habitat for several species,...
Fast forward modeling of Titan's infrared spectra to invert VIMS/Cassini hyperspectral images
S. Rodriguez, Stéphane Le Mouélic, P. Rannou, J. #NAME? Combe, L.L. Corre, G. Tobie, J. W. Barnes, Christophe Sotin, R. H. Brown, K. H. Baines, B. J. Buratti, R. N. Clark, P. D. Nicholson
2009, Conference Paper, WHISPERS '09 - 1st Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing
The surface of Titan, the largest icy moon of Saturn, is veiled by a very thick and hazy atmosphere. The Visual and Infrared Mapping Spectrometer onboard the Cassini spacecraft, in orbit around Saturn since July 2004, conduct an intensive survey of Titan with the objective to understand the complex nature...
How the continents deform: The evidence from tectonic geodesy
Wayne R. Thatcher
2009, Annual Review of Earth and Planetary Sciences (37) 237-262
Space geodesy now provides quantitative maps of the surface velocity field within tectonically active regions, supplying constraints on the spatial distribution of deformation, the forces that drive it, and the brittle and ductile properties of continental lithosphere. Deformation is usefully described as relative motions among elastic blocks and...
Documentation for the 2008 update of the United States National Seismic Hazard Maps
Mark D. Petersen, Arthur D. Frankel, Stephen C. Harmsen, Charles S. Mueller, Kathleen M. Haller, Russell L. Wheeler, Robert L. Wesson, Yuehua Zeng, Oliver S. Boyd, David M. Perkins, Nicolas Luco, Edward H. Field, Chris J. Wills, Kenneth S. Rukstales
2008, Open-File Report 2008-1128
The 2008 U.S. Geological Survey (USGS) National Seismic Hazard Maps display earthquake ground motions for various probability levels across the United States and are applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. This update of the maps incorporates new findings on earthquake...
The ecological future of the North American bison: Conceiving long-term, large-scale conservation of a species
E.W. Sanderson, Kent Redford, Bill Weber, K. Aune, Dick Baldes, J. Berger, Dave Carter, C. Curtin, James N. Derr, S.J. Dobrott, Eva Fearn, Craig Fleener, Steven C. Forrest, Craig Gerlach, C. Cormack Gates, J.E. Gross, P. Gogan, Shaun M. Grassel, Jodi A. Hilty, Marv Jensen, Kyran E. Kunkel, Duane Lammers, R. List, Karen Minkowski, Tom Olson, Chris Pague, Paul B. Robertson, Bob Stephenson
2008, Conservation Biology (22) 252-266
Many wide-ranging mammal species have experienced significant declines over the last 200 years; restoring these species will require long-term, large-scale recovery efforts. We highlight 5 attributes of a recent range-wide vision-setting exercise for ecological recovery of the North American bison (Bison bison) that are broadly applicable to other species and...
Hydrated silicate minerals on Mars observed by the Mars Reconnaissance Orbiter CRISM instrument
J.F. Mustard, S.L. Murchie, S.M. Pelkey, B.L. Ehlmann, R.E. Milliken, J. A. Grant, J.-P. Bibring, F. Poulet, J. Bishop, E. N. Dobrea, L. Roach, F. Seelos, R. E. Arvidson, S. Wiseman, R. Green, C. Hash, D. Humm, E. Malaret, J.A. McGovern, K. Seelos, T. Clancy, R. Clark, D. des Marais, N. Izenberg, A. Knudson, Y. Langevin, T. Martin, P. McGuire, Robert Morris, M. Robinson, T. Roush, M. Smith, G. Swayze, H. Taylor, T. Titus, M. Wolff
2008, Nature (454) 305-309
Phyllosilicates, a class of hydrous mineral first definitively identified on Mars by the OMEGA (Observatoire pour la Mineralogie, L’Eau, les Glaces et l’Activitié) instrument1,<a id="ref-link-abstract-2" title="Poulet, F. et...
EAARL coastal topography– Northeast barrier islands 2007: Bare earth
Amar Nayegandhi, John Brock, A. H. Sallenger, C. Wayne Wright, Xan Yates, Jamie M. Bonisteel
2008, Data Series 398
These remotely sensed, geographically referenced elevation measurements of Lidar-derived bare earth (BE) topography were produced collaboratively by the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and accurate datasets of...
EAARL coastal topography–Northeast Barrier Islands 2007: First surface
Amar Nayegandhi, John Brock, A. H. Sallenger, C. Wayne Wright, Xan Yates, Jamie M. Bonisteel
2008, Data Series 397
These remotely sensed, geographically referenced elevation measurements of Lidar-derived first surface (FS) topography were produced collaboratively by the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. This project provides highly detailed and accurate datasets...
EAARL Topography: Jean Lafitte National Historical Park and Preserve 2006
Amar Nayegandhi, John Brock, C. Wayne Wright, Martha Segura, Xan Yates
2008, Data Series 389
These remotely sensed, geographically referenced elevation measurements of Lidar-derived first surface (FS) and bare earth (BE) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Gulf Coast Network, Lafayette, LA; and the National...
EAARL coastal topography - Northern Gulf of Mexico
Amar Nayegandhi, John Brock, Abby Sallenger, C. Wayne Wright, Laurinda J. Travers, James Lebonitte
2008, Data Series 384
These remotely sensed, geographically referenced elevation measurements of Lidar-derived coastal topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility, VA. One objective of this research is to...
EAARL submerged topography– U.S. Virgin Islands 2003
Amar Nayegandhi, John Brock, C. Wayne Wright, Sara Stevens, Xan Yates, Jamie M. Bonisteel
2008, Data Series 395
These remotely sensed, geographically referenced elevation measurements of Lidar-derived submerged topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), South Florida-Caribbean Network, Miami, FL; and the National Aeronautics and Space Administration (NASA), Wallops...
EAARL topography - Natchez Trace Parkway 2007: First surface
Amar Nayegandhi, John Brock, C. Wayne Wright, Martha Segura, Xan Yates
2008, Data Series 392
These remotely sensed, geographically referenced elevation measurements of Lidar-derived first surface (FS) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Gulf Coast Network, Lafayette, LA; and the National Aeronautics and Space Administration...
EAARL coastal topography — Fire Island National Seashore 2007
Amar Nayegandhi, John Brock, C. Wayne Wright, Sara Stevens, Xan Yates, Jamie M. Bonisteel
2008, Data Series 391
These remotely sensed, geographically referenced elevation measurements of Lidar-derived first surface (FS) and bare earth (BE) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI; and...
EAARL topography - Vicksburg National Military Park 2008: Bare earth
Amar Nayegandhi, John Brock, C. Wayne Wright, Martha Segura, Xan Yates
2008, Data Series 390
These remotely sensed, geographically referenced elevation measurements of Lidar-derived bare earth (BE) topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Gulf Coast Network, Lafayette, LA; and the National Aeronautics and Space Administration...
EAARL coastal topography — Sandy Hook 2007
Amar Nayegandhi, John Brock, C. Wayne Wright, Sara Stevens, Xan Yates, Jamie M. Bonisteel
2008, Data Series 393
These remotely sensed, geographically referenced elevation measurements of Lidar-derived topography were produced as a collaborative effort between the U.S. Geological Survey (USGS), Florida Integrated Science Center (FISC), St. Petersburg, FL; the National Park Service (NPS), Northeast Coastal and Barrier Network, Kingston, RI; and the National Aeronautics and Space Administration (NASA),...
Ground-Water Flow, 2004-07, and Water Quality, 1992-2007, in McBaine Bottoms, Columbia, Missouri
Brenda Joyce Smith, Joseph M. Richards
2008, Scientific Investigations Report 2008-5182
The U.S. Geological Survey, in cooperation with the city of Columbia, Missouri, and the Missouri Department of Conservation, collected ground-water quality data, surface-water quality data, and water-level data in McBaine Bottoms, southwest of Columbia. McBaine Bottoms, adjacent to the Missouri River, is the location of the municipal-supply well field for...
Mapping "old" versus "young" piñon-juniper stands with a predictive topo-climatic model in north-central New Mexico, USA
B. F. Jacobs, W.H. Romme, Craig D. Allen
2008, Ecological Applications (18) 1627-1641
Piñon pine and juniper woodlands in the southwestern United States are often represented as an expanding and even invasive vegetation type, a legacy of historic grazing, and culpable in the degradation of western rangelands. A long-standing emphasis on forage production, in combination with recent hazard fuel concerns, has prompted a...
A Compilation of Provisional Karst Geospatial Data for the Interior Low Plateaus Physiographic Region, Central United States
Charles J. Taylor, Hugh L. Nelson
2008, Data Series 339
Geospatial data needed to visualize and evaluate the hydrogeologic framework and distribution of karst features in the Interior Low Plateaus physiographic region of the central United States were compiled during 2004-2007 as part of the Ground-Water Resources Program Karst Hydrology Initiative (KHI) project. Because of the potential usefulness to environmental...
