Landsat-7 ETM+ on-orbit reflective-band radiometric stability and absolute calibration
B. L. Markham, K. J. Thome, J. A. Barsi, E. Kaita, Dennis L. Helder, J. L. Barker, Pat Scaramuzza
2004, IEEE Transactions on Geoscience and Remote Sensing (42) 2810-2820
Launched in April 1999, the Landsat-7 Enhanced Thematic Mapper Plus (ETM+) instrument is in its sixth year of operation. The ETM+ instrument has been the most stable of any of the Landsat instruments. To date, the best onboard calibration source for the reflective bands has been the Full Aperture Solar...
Landsat-5 bumper-mode geometric correction
James C. Storey, Mike Choate
2004, IEEE Transactions on Geoscience and Remote Sensing (42) 2695-2703
The Landsat-5 Thematic Mapper (TM) scan mirror was switched from its primary operating mode to a backup mode in early 2002 in order to overcome internal synchronization problems arising from long-term wear of the scan mirror mechanism. The backup bumper mode of operation removes the constraints on scan start and...
Hydrogeology and quality of ground water in Orange County, Florida
James C. Adamski, Edward R. German
2004, Water-Resources Investigations Report 2003-4257
Ground water is the main source of water supply in central Florida and is critical for aquatic habitats and human consumption. To provide a better understanding for the conservation, development, and management of the water resources of Orange County, Florida, a study of the hydrogeologic framework, water budget, and ground-water...
Biodiversity and ecosystem functioning: Synthesis and perspectives
Beth A. Middleton, James B. Grace
2004, Restoration Ecology (12) 611-612
Does diversity matter in restored communities? This edited book explores the diversity–function debate, which has raged in ecology during the past several decades. The diversity–function question is relevant in restoration, but the question has not yet received a straightforward hearing in the field of restoration science. None of the authors...
Calibration strategies for a groundwater model in a highly dynamic alpine floodplain
L. Foglia, P. Burlando, Mary C. Hill, S. Mehl
2004, Conference Paper
Most surface flows to the 20-km-long Maggia Valley in Southern Switzerland are impounded and the valley is being investigated to determine environmental flow requirements. The aim of the investigation is the devel-opment of a modelling framework that simulates the dynamics of...
Implications of latest Pennsylvanian to middle permian paleontological and U-Pb SHRIMP data from the tecomate formation to re-dating tectonothermal events in the acatlán complex, Southern Mexico
J. Duncan Keppie, Charles Sandberg, B.V. Miller, J. L. Sanchez-Zavala, R.D. Nance, Forrest G. Poole
2004, International Geology Review (46) 745-753
Limestones in the highly deformed Tecomate Formation, uppermost unit of the Acatlán Complex, are latest Pennsylvanian—earliest Middle Permian in age rather than Devonian, the latter based on less diagnostic fossils. Conodont collections from two marble horizons now constrain its age to range from latest Pennsylvanian to...
Icelandic analogs to Martian flood lavas
Laszlo P. Keszthelyi, Thorvaldur Thordarson, Alfred McEwen, Henning Haack, Marie-Noelle Guilbaud, Stephen Self, Matti J. Rossi
2004, Geochemistry, Geophysics, Geosystems (5)
We report on new field observations from Icelandic lava flows that have the same surface morphology as many Martian flood lava flows. The Martian flood lavas are characterized by a platy‐ridged surface morphology whose formation is not well understood. The examples on Mars include some of...
Reply to comment on “Precise K–Ar, 40Ar/39Ar, Rb–Sr and U–Pb mineral ages from the 27.5 Ma Fish Canyon Tuff reference standard” by M.A. Lanphere and H. Baadsgaard
Marvin A. Lanphere
2004, Chemical Geology (211) 389-390
No abstract available....
Mojave Desert Ecosystem Program: Central Mojave vegetation database
Kathryn A. Thomas, Todd Keeler-Wolf, Janet Franklin, Peter Stine
2004, Report
Department of Defense (DOD) and the other desert managers are developing and organizing scientific information needed to better manage the natural resources of the Mojave Desert. Scientific, natural, and cultural resource professionals in the Mojave have agreed upon the importance of developing mechanisms by which land management decisions can be...
LIDAR derived 5m resolution bare earth and first return digital elevation model of the Paine Run Watershed, Augusta County, Virginia
Peter G. Chirico
2004, Open-File Report 2004-1320
Topogrid Derived 10 Meter Resolution Digital Elevation Model of the Shenandoah National Park and Surrounding Region, Virginia
Peter G. Chirico, Seth D. Tanner
2004, Open-File Report 2004-1321
Explanation The purpose of developing a new 10m resolution DEM of the Shenandoah National Park Region was to more accurately depict geologic structure, surfical geology, and landforms of the Shenandoah National Park Region in preparation for automated landform classification. Previously, only a 30m resolution DEM was available through the National Elevation...
Potentiometric surface of the upper Floridan aquifer in the St. Johns River Water Management District and vicinity, Florida, May 2004
Sandra L. Kinnaman, Leel Knowles Jr.
2004, Open-File Report 2004-1377
This map depicts the potentiometric surface of the Upper Floridan aquifer in the St. Johns River Water Management District and vicinity in May 2001. Potentiometric contours are based on water-level measurements collected at 684 wells during the period May 2 - 30, near the end of the dry season. The...
Transtensional deformation in the Lake Tahoe region, California and Nevada, USA
Richard A. Schweickert, M.M. Lahren, K.D. Smith, J. F. Howle, G. Ichinose
2004, Tectonophysics (392) 303-323
Dextral transtensional deformation is occurring along the Sierra Nevada–Great Basin boundary zone (SNGBBZ) at the eastern edge of the Sierra Nevada microplate. In the Lake Tahoe region of the SNGBBZ, transtension is partitioned spatially and temporally into domains of north–south striking normal faults and transitional domains with conjugate strike-slip faults....
What makes hydromagmatic eruptions violent? Some insights from the Keanakāko'i Ash, Kı̄lauea Volcano, Hawai'i
Larry G. Mastin, Robert L. Christiansen, Carl Thornber, Jacob B. Lowenstern
2004, Journal of Volcanology and Geothermal Research (137) 15-31
Volcanic eruptions at the summit of Kilauea Volcano, Hawai'i, are of two dramatically contrasting types: (1) benign lava flows and lava fountains; and (2) violent, mostly prehistoric eruptions that dispersed tephra over hundreds of square kilometers. The violence of the latter eruptions has been attributed to mixing of water and...
Book review, Uranium resource processing and secondary resources
Daniel Olson, W.I. Finch, Branjena Misha
2004, AAPG Bulletin (88) 1208-1210
No abstract available. ...
Topographic controls on post-Oligocene changes in ice-sheet dynamics, Prydz Bay region, east Antarctica
J. Taylor, M Siegert, A. J. Payne, M. J. Hambrey, P.E. O’Brien, A. K. Cooper, G. Leitchenkov
2004, Geology (32) 197-200
Within the general trend of post-Eocene cooling, the largest and oldest outlet of the East Antarctic Ice Sheet underwent a change from ice-cliff to ice-stream and/or ice-shelf dynamics, with an associated switch from line-source to fan sedimentation. Available geological data reveal little about the causes of these changes in ice...
Assessing conceptual models for subsurface reactive transport of inorganic contaminants
James A. Davis, Steven B. Yabusaki, Carl Steefel, John M. Zachara, Gary P. Curtis, George D. Redden, Louise J. Criscenti, Bruce D. Honeyman
2004, Eos, Transactions, American Geophysical Union (85) 449-445
In many subsurface situations where human health and environmental quality are at risk (e.g., contaminant hydrogeology petroleum extraction, carbon sequestration, etc.),scientists and engineers are being asked by federal agency decision-makers to predict the fate of chemical species under conditions where both reactions and transport are processes of first-order importance.In 2002,...
Stress orientations at intermediate angles to the San Andreas Fault, California
Jeanne L. Hardebeck, Andrew J. Michael
2004, Journal of Geophysical Research B: Solid Earth (109)
There are currently two competing models for the frictional strength of the San Andreas Fault in California: the strong-fault model and the weak-fault model. The strong-fault model predicts the maximum horizontal compressive stress axis to be at low angles to the fault, while the relatively weak fault model predicts it...
Geodetic and seismic constraints on some seismogenic zone processes in Costa Rica
E. Norabuena, Timothy Dixon, Susan Schwartz, Heather DeShon, Andrew Newman, Marino Protti, Victor Gonzalez, LeRoy Dorman, Ernst Flueh, Paul Lundgren, Frederick Pollitz, Dan Sampson
2004, Journal of Geophysical Research B: Solid Earth (109)
New seismic and geodetic data from Costa Rica provide insight into seismogenic zone processes in Central America, where the Cocos and Caribbean plates converge. Seismic data are from combined land and ocean bottom deployments in the Nicoya peninsula in northern Costa Rica and near the Osa peninsula in southern Costa...
Geodetic and seismic constraints on some seismogenic zone processes in Costa Rica
E. Norabuena, Timothy Dixon, Susan Savitt Schwartz, Heather R. DeShon, Andrew Newman, Marino Protti, Victor Gonzalez, LeRoy Dorman, Ernst Flueh, Paul Lundgren, Frederick Pollitz, Dan Sampson
2004, Journal of Geophysical Research B: Solid Earth (109)
New seismic and geodetic data from Costa Rica provide insight into seismogenic zone processes in Central America, where the Cocos and Caribbean plates converge. Seismic data are from combined land and ocean bottom deployments in the Nicoya peninsula in northern Costa Rica and near the Osa peninsula in southern Costa...
Mitigation of earthquake damage
George Plafker
2004, Book chapter, Meeting Challenges with Geologic Maps
The article describes the use of a geologic map to help mitigate earthquake damage along the Denali Fault where the Trans-Alaska Pipeline crosses. Geologic mapping of bedrock and unconsolidated deposits reveals a history of horizontal right-lateral slip and local vertical separations at the fault. It was determined that the eastern...
RADAR: The Cassini Titan Radar Mapper
C. Elachi, M.D. Allison, L. Borgarelli, P. Encrenaz, E. Im, M.A. Janssen, W.T.K. Johnson, Randolph L. Kirk, R. D. Lorenz, J. I. Lunine, D.O. Muhleman, S.J. Ostro, G. Picardi, F. Posa, C.G. Rapley, L.E. Roth, R. Seu, Laurence A. Soderblom, S. Vetrella, S. D. Wall, C. A. Wood, H. A. Zebker
2004, Space Science Reviews (115) 71-110
The Cassini RADAR instrument is a multimode 13.8 GHz multiple-beam sensor that can operate as a synthetic-aperture radar (SAR) imager, altimeter, scatterometer, and radiometer. The principal objective of the RADAR is to map the surface of Titan. This will be done in the imaging, scatterometer, and radiometer modes. The RADAR...
SVFlux and ChemFlux: Software for two-dimensional/three-dimensional finite element variably saturated flow and transport modeling
Chunmiao Zheng, Paul A. Hsieh, Shawn Matott
2004, Groundwater (42) 804-808
SVFlux and ChemFlux are a pair of finite element models designed to simulate the movement of water and contaminants in two and three dimensions under variably saturated conditions. The transport simulator ChemFlux is designed as a companion to the flow simulator SVFlux. SVFlux and ChemFlux are commercial products developed by...
Questa baseline and pre-mining ground-water quality investigation 4. Historical surface-water quality for the Red River Valley, New Mexico, 1965 to 2001
Ann S. Maest, D. Kirk Nordstrom, Sara H. LoVetere
2004, Scientific Investigations Report 2004-5063
Historical water-quality samples collected from the Red River over the past 35 years were compiled, reviewed for quality, and evaluated to determine influences on water quality over time. Hydrologic conditions in the Red River were found to have a major effect on water quality. The lowest sulfate concentrations were associated...
Seepage study of Mapleton Lateral Canal near Mapleton, Utah, 2003
Chris D. Wilkowske, Jeff V. Phillips
2004, Scientific Investigations Report 2004-5210
A study was conducted during the summer of 2003 on Mapleton Lateral Canal near Mapleton, Utah, to determine gain or loss of flow in the canal from seepage. Measurements were made in May, June, July, and September of 2003. The uppermost reach of the canal had an apparent average loss...
