A new method to compute standard-weight equations that reduces length-related bias
K.G. Gerow, R. C. Anderson-Sprecher, W.A. Hubert
2005, North American Journal of Fisheries Management (25) 1288-1300
We propose a new method for developing standard-weight (Ws) equations for use in the computation of relative weight (Wr) because the regression line-percentile (RLP) method often leads to length-related biases in Ws equations. We studied the structural properties of W s equations developed by the RLP method through simulations, identified...
Potential for calibration of geostationary meteorological satellite imagers using the Moon
T.C. Stone, H. H. Kieffer, I.F. Grant
Butler J.J., editor(s)
2005, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Solar-band imagery from geostationary meteorological satellites has been utilized in a number of important applications in Earth Science that require radiometric calibration. Because these satellite systems typically lack on-board calibrators, various techniques have been employed to establish "ground truth", including observations of stable ground sites and oceans, and cross-calibrating with...
Virus fate and transport during artificial recharge with recycled water
Robert Anders, C.V. Chrysikopoulos
2005, Water Resources Research (41)
A field‐scale experiment was conducted at a research site using bacterial viruses (bacteriophage) MS2 and PRD1 as surrogates for human viruses, bromide as a conservative tracer, and tertiary‐treated municipal wastewater (recycled water) to investigate the fate and transport of viruses during artificial recharge. Observed virus concentrations were fitted using a...
A neural network approach for enhancing information extraction from multispectral image data
J. Liu, G. Shao, H. Zhu, S. Liu
2005, Canadian Journal of Remote Sensing (31) 432-438
A back-propagation artificial neural network (ANN) was applied to classify multispectral remote sensing imagery data. The classification procedure included four steps: (i) noisy training that adds minor random variations to the sampling data to make the data more representative and to reduce the training sample size; (ii) iterative or multi-tier...
Adsorption equilibrium of organic vapors on single-walled carbon nanotubes
S. Agnihotri, M.J. Rood, M. Rostam-Abadi
2005, Carbon (43) 2379-2388
Gravimetric techniques were employed to determine the adsorption capacities of commercially available purified electric arc and HiPco single-walled carbon nanotubes (SWNTs) for organic compounds (toluene, methyl ethyl ketone (MEK), hexane and cyclohexane) at relative pressures, p/p0, ranging from 1 ?? 10-4 to 0.95 and at isothermal conditions of 25, 37...
Summary of dimensionless Texas hyetographs and distribution of storm depth developed for Texas Department of Transportation research project 0–4194
William H. Asquith, Meghan C. Roussel, David B. Thompson, Theodore G. Cleveland, Xing Fang
2005, Report
Hyetographs and storm depth distributions are important elements of hydraulic design by Texas Department of Transportation engineers. Design hyetographs are used in conjunction with unit hydrographs to obtain peak discharge and hydrograph shape for hydraulic design. Storm-depth distributions can be used to assess the probability of a total rainfall depth...
Extraordinary flood response of a small urban watershed to short-duration convective rainfall
J. A. Smith, A.J. Miller, M.L. Baeck, P.A. Nelson, G. T. Fisher, K.L. Meierdiercks
2005, Journal of Hydrometeorology (6) 599-617
The 9.1 km2 Moores Run watershed in Baltimore, Maryland, experiences floods with unit discharge peaks exceeding 1 m3 s-1 km-2 12 times yr-1, on average. Few, if any, drainage basins in the continental United States have a higher frequency. A thunderstorm system on 13 June 2003 produced the record flood...
The 2003 eruption of Anatahan volcano, Commonwealth of the Northern Mariana Islands: Chronology, volcanology, and deformation
F. A. Trusdell, R. B. Moore, M. Sako, R.A. White, S.K. Koyanagi, R. Chong, J.T. Camacho
2005, Journal of Volcanology and Geothermal Research (146) 184-207
The first historical eruption on Anatahan Island occurred on 10 May 2003 from the east crater of the volcano. The eruption was preceded by several hours of seismicity. Two and a half hours before the outbreak, the number of earthquakes surged to more than 100 events per hour. At 0730...
Phosphorus component in AnnAGNPS
Y. Yuan, R.L. Bingner, F.D. Theurer, R.A. Rebich, P.A. Moore
2005, Transactions of the American Society of Agricultural Engineers (48) 2145-2154
The USDA Annualized Agricultural Non-Point Source Pollution model (AnnAGNPS) has been developed to aid in evaluation of watershed response to agricultural management practices. Previous studies have demonstrated the capability of the model to simulate runoff and sediment, but not phosphorus (P). The main purpose of this article is to evaluate...
A regional view of urban sedimentary basins in Northern California based on oil industry compressional-wave velocity and density logs
T.M. Brocher
2005, Bulletin of the Seismological Society of America (95) 2093-2114
Compressional-wave (sonic) and density logs from 119 oil test wells provide knowledge of the physical properties and impedance contrasts within urban sedimentary basins in northern California, which is needed to better understand basin amplification. These wire-line logs provide estimates of sonic velocities and densities for primarily Upper Cretaceous to Pliocene...
Conceptualization and simulation of the Edwards aquifer, San Antonio region, Texas
K.J. Lindgren, A.R. Dutton, S.D. Hovorka, S.R.H. Worthington, S. Painter
Beck B.F., editor(s)
2005, Conference Paper, Geotechnical Special Publication
Numerical ground-water flow models for the Edwards aquifer in the San Antonio region of Texas generally have been based on a diffuse-flow conceptualization. That is, although conduits likely are present, the assumption is that flow in the aquifer predominantly is through a network of small fractures and openings sufficiently numerous...
Influence of waves and horseshoe crab spawning on beach morphology and sediment grain-size characteristics on a sandy estuarine beach
N.L. Jackson, K.F. Nordstrom, D. R. Smith
2005, Sedimentology (52) 1097-1108
The effects of wave action and horseshoe crab spawning on the topography and grain-size characteristics on the foreshore of an estuarine sand beach in Delaware Bay, New Jersey, USA were evaluated using data collected over six consecutive high tides. Data were gathered inside and outside a 25 m long exclosure...
Insider censoring: Distortion of data with nondetects
D.R. Helsel
2005, Human and Ecological Risk Assessment (11) 1127-1137
Environmental data often include low-level concentrations below reporting limits. These data may be reported as "<RL," where RL is one of several types of reporting limits. Some values also may be reported as a single number, but flagged with a qualifier (J-values) to indicate a difference in precision as compared...
Carbon isotopes from fossil packrat pellets and elevational movements of Utah agave plants reveal the Younger Dryas cold period in Grand Canyon, Arizona
K.L. Cole, S.T. Arundel
2005, Geology (33) 713-716
Carbon isotopes in rodent fecal pellets were measured on packrat (Neotoma spp.) middens from the Grand Canyon, Arizona. The pellet samples reflect the abundance of cold-intolerant C4 and Crassulacean acid metabolism (CAM) plant species relative to the predominant C3 vegetation in the packrat diet. The temporal sequence of isotopic results...
Ontogenetic behavior and dispersal of Sacramento River white sturgeon, Acipenser transmontanus, with a note on body color
B. Kynard, E. Parker
2005, Environmental Biology of Fishes (74) 19-30
We studied Sacramento River white sturgeon, Acipenser transmontanus, in the laboratory to develop a conceptual model of ontogenetic behavior and provide insight into probable behavior of wild sturgeon. After hatching, free embryos initiated a low intensity, brief downstream dispersal during which fish swam near the bottom and were photonegative. The...
Coastal foredune displacement and recovery, Barrett Beach-Talisman, Fire Island, New York, USA
N.P. Psuty, J.P. Pace, J.R. Allen
2005, Zeitschrift fur Geomorphologie, Supplementband (141) 153-168
Coastal foredune mobility has been tracked at Fire Island National Seashore since 1976 with annual field surveys and analysis of frequent aerial photography. Sequential mapping of the foredune crestline depicts nearly islandwide displacement during major storm events, such as in 1992, and localized displacement during alongshore passage of inshore circulation...
Detrital illite crystals identified from crystallite thickness measurements in siliciclastic sediments
L. Aldega, D. D. Eberl
2005, American Mineralogist (90) 1587-1596
Illite crystals in siliciclastic sediments are heterogeneous assemblages of detrital material coming from various source rocks and, at paleotemperatures >70 ??C, of superimposed diagenetic modification in the parent sediment. We distinguished the relative proportions of 2M1 detrital illite and possible diagenetic 1Md + 1M illite by a combined analysis of...
Postseismic deformation following the June 2000 earthquake sequence in the south Iceland seismic zone
T. Arnadottir, Sigurjon Jonsson, F. F. Pollitz, W. Jiang, K.L. Feigl
2005, Journal of Geophysical Research B: Solid Earth (110) 1-13
We observe postseismic deformation on two spatiotemporal scales following Mw = 6.5 earthquakes in the south Iceland seismic zone on 17 and 21 June 2000. We see a rapidly decaying deformation transient lasting no more than 2 months and extending about 5 km away from the two main shock ruptures....
Relationships of field habitat measurements, visual habitat indices, and land cover to benthic macroinvertebrates in urbanized streams of the Santa Clara Valley, California
S.V. Fend, J.L. Carter, F.R. Kearns
2005, American Fisheries Society Symposium (2005) 193-212
We evaluated several approaches for measuring natural and anthropogenic habitat characteristics to predict benthic macroinvertebrate assemblages over a range of urban intensity at 85 stream sites in the Santa Clara Valley, California. Land cover was summarized as percentage urban land cover and impervious area within upstream buffers and the upstream...
A legacy of change: The lower Colorado River, Arizona-California-Nevada, USA, and Sonora-Baja California Norte, Mexico
G.A. Mueller, P.C. Marsh, W.L. Minckley
2005, American Fisheries Society Symposium (2005) 139-156
The lower Colorado is among the most regulated rivers in the world. It ranks as the fifth largest river in volume in the coterminous United States, but its flow is fully allocated and no longer reaches the sea. Lower basin reservoirs flood nearly one third of the river channel and...
Late Cenozoic sedimentation and volcanism during transtensional deformation in Wingate Wash and the Owlshead Mountains, Death Valley
H.G. Luckow, T.L. Pavlis, L.F. Serpa, B. Guest, D.L. Wagner, L. Snee, T.M. Hensley, A. Korjenkov
2005, Earth-Science Reviews (73) 177-219
New 1:24,000 scale mapping, geochemical analyses of volcanic rocks, and Ar/Ar and tephrochronology analyses of the Wingate Wash, northern Owlshead Mountain and Southern Panamint Mountain region document a complex structural history constrained by syntectonic volcanism and sedimentation. In this study, the region is divided into five structural domains with distinct,...
Microsatellite DNA markers for delineating population structure and kinship among the endangered Kirtland's warbler (Dendroica kirtlandii)
T.L. King, M.S. Eackles, A.P. Henderson, Carol I. Bocetti, D. Currie, J.M. Wunderle Jr.
2005, Molecular Ecology Notes (5) 569-571
We document the isolation and characterization of 23 microsatellite DNA markers for the endangered Kirtland's warbler (Dendroica kirtlandii), a Nearctic/Neotropical migrant passerine. This suite of markers revealed moderate to high levels of allelic diversity (averaging 7.7 alleles per locus) and heterozygosity (averaging 72%). Genotypic frequencies at 22 of 23 (95%)...
Modeling and measuring the nocturnal drainage flow in a high-elevation, subalpine forest with complex terrain
C. Yi, Russell K. Monson, Z. Zhai, D.E. Anderson, B. Lamb, G. Allwine, A.A. Turnipseed, Sean P. Burns
2005, Journal of Geophysical Research D: Atmospheres (110) 1-13
The nocturnal drainage flow of air causes significant uncertainty in ecosystem CO2, H2O, and energy budgets determined with the eddy covariance measurement approach. In this study, we examined the magnitude, nature, and dynamics of the nocturnal drainage flow in a subalpine forest ecosystem with complex terrain. We used an experimental...
Delayed effects of flood control on a flood-dependent riparian forest
Gabrielle L. Katz, Jonathan M. Friedman, Susan W. Beatty
2005, Ecological Applications (15) 1019-1035
The downstream effects of dams on riparian forests are strongly mediated by the character and magnitude of adjustment of the fluvial–geomorphic system. To examine the effects of flow regulation on sand-bed streams in eastern Colorado, we studied the riparian forest on three river segments, the dam-regulated South Fork Republican River...
Transboundary impacts on regional ground water modeling in Texas
K. Rainwater, J. Stovall, S. Frailey, L. Urban
2005, Conference Paper, Ground Water
Recent legislation required regional grassroots water resources planning across the entire state of Texas. The Texas Water Development Board (TWDB), the state's primary water resource planning agency, divided the state into 16 planning regions. Each planning group developed plans to manage both ground water and surface water sources and to...
