Monograph for using paleoflood data in Water Resources Applications
R.E. Swain, R.D. Jarrett
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
The Environmental and Water Resources Institute (EWRI) Technical Committee on Surface Water Hydrology is sponsoring a Task Committee on Paleoflood Hydrology to prepare a monograph entitled, "Use of Paleoflood and Historical Data in Water Resources Applications." This paper introduces the subject of paleoflood hydrology and discusses the topics, which are...
The wetland continuum: A conceptual framework for interpreting biological studies
N.H. Euliss Jr., J. W. LaBaugh, L.H. Fredrickson, D.M. Mushet, Murray K. Laubhan, G.A. Swanson, T. C. Winter, D.O. Rosenberry, R.D. Nelson
2004, Wetlands (24) 448-458
We describe a conceptual model, the wetland continuum, which allows wetland managers, scientists, and ecologists to consider simultaneously the influence of climate and hydrologic setting on wetland biological communities. Although multidimensional, the wetland continuum is most easily represented as a two-dimensional gradient, with ground water and atmospheric water constituting the...
Simulating the dynamics of linear forests in Great Plains agroecosystems under changing climates
Q. Guo, J.R. Brandle, M.M. Schoeneberger, D. Buettner
2004, Canadian Journal of Forest Research (34) 2564-2572
Most forest growth models are not suitable for the highly fragmented, linear (or linearly shaped) forests in the Great Plains agroecosystems (e.g., windbreaks, riparian forest buffers) where such forests are a minor but ecologically important component of the land mosaics. This study used SEEDSCAPE, a recently modified gap model designed...
Commentary: A cautionary tale regarding use of the National Land Cover Dataset 1992
Wayne E. Thogmartin, Alisa L. Gallant, Melinda G. Knutson, Timothy J. Fox, Manuel J. Suarez
2004, Wildlife Society Bulletin (32) 970-978
Digital land-cover data are among the most popular data sources used in ecological research and natural resource management. However, processes for accurate land-cover classification over large regions are still evolving. We identified inconsistencies in the National Land Cover Dataset 1992, the most current and available representation of land cover for...
Using borehole flow data to characterize the hydraulics of flow paths in operating wellfields
F. Paillet, J. Lundy
2004, Conference Paper, Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000: Building Partnerships
Understanding the flow paths in the vicinity of water well intakes is critical in the design of effective wellhead protection strategies for heterogeneous carbonate aquifers. High-resolution flow logs can be combined with geophysical logs and borehole-wall-image logs (acoustic televiewer) to identify the porous beds, solution openings, and fractures serving as...
Gene flow and genetic characterization of Northern Goshawks breeding in Utah
Sarah A. Sonsthagen, Sandra L. Talbot, C.M. White
2004, Condor (106) 826-836
Adult movement and natal dispersal data demonstrate that Northern Goshawks (Accipiter gentilis) are able to travel over long distances, suggesting a large functional population. However, these data are unable to determine whether these movements contribute to gene flow among adjacent breeding areas. We used eight microsatellite DNA loci and mitochondrial...
Land cover mapping of North and Central America—Global Land Cover 2000
Rasim Latifovic, Zhi-Liang Zhu
2004, Remote Sensing of Environment (89) 116-127
The Land Cover Map of North and Central America for the year 2000 (GLC 2000-NCA), prepared by NRCan/CCRS and USGS/EROS Data Centre (EDC) as a regional component of the Global Land Cover 2000 project, is the subject of this paper. A new mapping approach for transforming satellite observations acquired by...
Summary of studies supporting cumulative effects analysis of upper Yellowstone River channel modifications
Gregor T. Auble, Zachary H. Bowen, Ken D. Bovee, Adrian H. Farmer, Natalie R. Sexton, Terry J. Waddle
2004, Open-File Report 2004-1442
During the last several decades, portions of the upper Yellowstone River have been modified for flood control and erosion prevention. The U.S. Army Corps of Engineers is responsible for administration of a permit program for evaluating construction activities affecting rivers, streams, and wetlands. The Corps regulates activities under the authority...
Surface complexation model of uranyl sorption on Georgia kaolinite
T.E. Payne, J.A. Davis, G.R. Lumpkin, R. Chisari, T.D. Waite
2004, Applied Clay Science (26) 151-162
The adsorption of uranyl on standard Georgia kaolinites (KGa-1 and KGa-1B) was studied as a function of pH (3–10), total U (1 and 10 μmol/l), and mass loading of clay (4 and 40 g/l). The uptake of uranyl in air-equilibrated systems increased with pH and reached...
Subsurface temperature as a passkey for exploration of mature basins: Hot anticlines - A key to discovery?
D. F. Merriam
2004, Oil & Gas Journal (102) 29-34
Temperature anomalies associated with oil-producing structures in the US Midcontinent and similar cratonic areas probably can be used reliably as a passkey for petroleum exploration in mature areas, and thus the concept of hot anticlines could be a key to discovery. Analysis of accumulated data during the past several decades...
Real-time seismic monitoring needs of a building owner - And the solution: A cooperative effort
M. Çelebi, A. Sanli, M. Sinclair, S. Gallant, D. Radulescu
2004, Earthquake Spectra (20) 333-346
A recently implemented advanced seismic monitoring system for a 24-story building facilitates recording of accelerations and computing displacements and drift ratios in near-real time to measure the earthquake performance of the building. The drift ratio is related to the damage condition of the specific building. This system meets the owner's...
Estimating V̄s(30) (or NEHRP site classes) from shallow velocity models (depths < 30 m)
David M. Boore
2004, Bulletin of the Seismological Society of America (94) 591-597
The average velocity to 30 m [V??s(30)] is a widely used parameter for classifying sites to predict their potential to amplify seismic shaking. In many cases, however, models of shallow shear-wave velocities, from which V??s(30) can be computed, do not extend to 30 m. If the data for these cases...
Uranium-series coral ages from the US Atlantic Coastal Plain-the "80 ka problem" revisited
J.F. Wehmiller, K. R. Simmons, H. Cheng, R. Lawrence Edwards, J. Martin-McNaughton, L.L. York, D.E. Krantz, C.-C. Shen
2004, Quaternary International (120) 3-14
Uranium series coral ages for emergent units from the passive continental margin US Atlantic Coastal Plain (ACP) suggest sea level above present levels at the end of marine oxygen isotope stage (MIS) 5, contradicting age-elevation relations based on marine isotopic or coral reef models of ice equivalent sea level. We...
Tectonic histories between Alba Patera and Syria Planum, Mars
R. C. Anderson, J. M. Dohm, A. F. C. Haldemann, T.M. Hare, V.R. Baker
2004, Icarus (171) 31-38
Syria Planum and Alba Patera are two of the most prominent features of magmatic-driven activity identified for the Tharsis region and perhaps for all of Mars. In this study, we have performed a Geographic Information System-based comparative investigation of their tectonic histories using published geologic map information and Mars Orbiter...
Nitrogen fluxes and retention in urban watershed ecosystems
P.M. Groffman, N.L. Law, K.T. Belt, L.E. Band, G. T. Fisher
2004, Ecosystems (7) 393-403
Although the watershed approach has long been used to study whole-ecosystem function, it has seldom been applied to study human-dominated systems, especially those dominated by urban and suburban land uses. Here we present 3 years of data on nitrogen (N) losses from one completely forested, one agricultural, and six urban/suburban...
Ontogenetic behavior and migration of Gulf of Mexico sturgeon, Acipenser oxyrinchus desotoi, with notes on body color and development
B. Kynard, E. Parker
2004, Environmental Biology of Fishes (70) 43-55
We observed Suwannee River Gulf sturgeon, Acipenser oxyrinchus desotoi, in the laboratory and found free embryos (first interval after hatching) hid under rocks and did not migrate. Thus, wild embryos should be at the spawning area. Larvae (first interval feeding exogenously) initiated a slow downstream migration, and some juveniles (interval...
The influence of diet, consumption and lipid use on recruitment of white bass
W.J. Eckmayer, F.J. Margraf
2004, Lakes and Reservoirs: Research and Management (9) 133-141
The abundance of white bass (Morone chrysops) in Lake Erie has declined in recent years, sparking interest in mechanisms influencing its recruitment. We evaluate two mechanisms affecting recruitment: diet and the potential for competition, and storage of lipid energy reserves and the relationship to overwinter survival. The fish in our...
Geographic structure of adelie penguin populations: overlap in colony-specific foraging areas
D. G. Ainley, C. A. Ribic, G. Ballard, S. Heath, I. Gaffney, B. J. Karl, K. J. Barton, P. R. Wilson, S. Webb
2004, Ecological Monographs (74) 159-178
In an investigation of the factors leading to geographic structuring among Ade??lie Penguin (Pygoscelis adeliae) populations, we studied the size and overlap of colony-specific foraging areas within an isolated cluster of colonies. The study area, in the southwestern Ross Sea, included one large and three smaller colonies, ranging in size...
Fishes of the Missouri national recreational river, South Dakota and Nebraska
C. R. Berry Jr., B. Young
2004, Great Plains Research (14) 89-114
Two sections of the Missouri River, one extending 94 km downstream from Gavins Point Dam, and the other extending 62 km downstream from Fort Randall Dam, are legally designated as National Recreational Rivers. An ichthyofaunal list and fish habitat data were needed for conservation planning by states and federal agencies...
The effects of habitat resolution on models of avian diversity and distributions: A comparison of two land-cover classifications
Joshua J. Lawler, Raymond. J. O’Connor, Carolyn T. Hunsaker, K. Bruce Jones, Thomas R. Loveland, Denis White
2004, Landscape Ecology (19) 517-532
Quantifying patterns is a key element of landscape analysis. One aspect of this quantification of particular importance to landscape ecologists is the classification of continuous variables to produce categorical variables such as land-cover type or elevation stratum. Although landscape ecologists are fully aware of the importance of spatial resolution in...
Lateral mixing in the Mississippi River below the confluence with the Ohio River
R. E. Rathbun, C.E. Rostad
2004, Water Resources Research (40)
Lateral dispersion coefficients for two dispersants were determined for three sections of the Mississippi River below the confluence with the Ohio River. The dispersants were the specific conductance and an industrial organic compound (trimethyltriazinetrione). Three models based on the stream tube concept were used, and lateral dispersion coefficients computed from...
Toward mapping surface deformation in three dimensions using InSAR
Tim J. Wright, Barry E. Parsons, Zhong Lu
2004, Geophysical Research Letters (31)
One of the limitations of deformation measurements made with interferometric synthetic aperture radar (InSAR) is that an interferogram only measures one component of the surface deformation — in the satellite's line of sight. We investigate strategies for mapping surface deformation in three dimensions by using multiple interferograms, with different imaging...
Comparing population size estimators for plethodontid salamanders
L.L. Bailey, T.R. Simons, K. H. Pollock
2004, Journal of Herpetology (38) 370-380
Despite concern over amphibian declines, few studies estimate absolute abundances because of logistic and economic constraints and previously poor estimator performance. Two estimation approaches recommended for amphibian studies are mark-recapture and depletion (or removal) sampling. We compared abundance estimation via various mark-recapture and depletion methods, using data from a three-year...
Active shortening of the Cascadia forearc and implications for seismic hazards of the Puget Lowland
S. Y. Johnson, R.J. Blakely, W. J. Stephenson, S. V. Dadisman, M. A. Fisher
2004, Tectonics (23)
Margin-parallel shortening of the Cascadia forearc is a consequence of oblique subduction of the Juan de Fuca plate beneath North America. Strike-slip, thrust, and oblique crustal faults beneath the densely populated Puget Lowland accommodate much of this north-south compression, resulting in large crustal earthquakes. To better understand this forearc deformation...
Structural model of the San Bernardino basin, California, from analysis of gravity, aeromagnetic, and seismicity data
M. Anderson, J. Matti, R. Jachens
2004, Journal of Geophysical Research B: Solid Earth (109)
The San Bernardino basin is an area of Quaternary extension between the San Jacinto and San Andreas Fault zones in southern California. New gravity data are combined with aeromagnetic data to produce two- and three-dimensional models of the basin floor. These models are used to identify specific faults that have...
