Amount of gas hydrate estimated from compressional- and shear-wave velocities at the JAPEX/JNOC/GSC Mallik 2L-38 gas hydrate research well
Myung W. Lee
1999, Bulletin of the Geological Survey of Canada 313-322
The amount of in situ gas hydrate concentrated in the sediment pore space at the JAPEX/JNOC/GSC Mallik 2L-38 gas hydrate research well was estimated by using compressional-wave (P-wave) and shear-wave (S-wave) downhole log measurements. A weighted equation developed for relating the amount of gas hydrate concentrated in the pore space...
Connecting onshore and offshore near-surface geology: Delaware's sand inventory project
K.W. Ramsey, R.R. Jordan, J.H. Talley
1999, Marine Georesources and Geotechnology (17) 185
Beginning in 1988, the Delaware Geological Survey began a program to inventory on-land sand resources suitable for beach nourishment. The inventory included an assessment of the native beach textures using existing data and developing parameters of what would be considered suitable sand textures for Delaware's Atlantic beaches. An assessment of...
Occurrence and behavior of the herbicide Prometon in the hydrologic system
P. D. Capel, A.H. Spexet, S.J. Larson
1999, Environmental Science & Technology (33) 674-680
Prometon, a triazine herbicide, is used for total vegetation control on industrial sites, on noncrop areas on farms, in and under asphalt, and to a small extent by homeowners. Prometon has often been detected in surface water and groundwater in studies reported in the literature, but its presence is seldom...
Estimation of potential runoff-contributing areas in the Kansas-Lower Republican River basin, Kansas
Kyle E. Juracek
1999, Water-Resources Investigations Report 99-4089
Digital soils and topographic data were used to estimate and compare potential runoff-contributing areas for 19 selected subbasins representing soil, slope, and runoff variability within the Kansas-Lower Republican (KLR) River Basin. Potential runoff-contributing areas were estimated separately and collectively for the processes of infiltration-excess and saturation-excess overland flow using a...
Relations of surface-water quality to streamflow in the Atlantic Coastal, lower Delaware River, and Delaware Bay basins, New Jersey, water years 1976-93
Kathryn Hunchak-Kariouk, Debra E. Buxton, R. Edward Hickman
1999, Water-Resources Investigations Report 98-4244
Relations of water quality to streamflow were determined for 18 water-quality constituents at 28 surface-water-quality stations within the drainage area of the Atlantic Coastal, lower Delaware River, and Delaware Bay Basins for water years 1976-93. Surface-water-quality and streamflow data were evaluated for trends (through time) in constituent concentrations during high...
An annotated bibliography of selected references on the estimated rates of direct ground-water discharge to the Great Lakes
N.G. Grannemann, T. L. Weaver
1999, Water-Resources Investigations Report 98-4039
Estimated rates of direct ground-water discharge to Lake Michigan range from 800 to 6,700 cubic feet per second. Highest rates are calculated for the northeastern shore of the lake. Using generalized values, total direct ground-water discharge to Lake Michigan was estimated to be about 2,700 cubic feet per second. Insufficient...
Subcutaneous anchor attachment increases retention of radio transmitters on Xantus' and marbled murrelets
Scott H. Newman, John Y. Takekawa, Darrell L. Whitworth, Esther E. Burkett
1999, Journal of Field Ornithology (70) 520-534
We modified a subcutaneous anchor attachment and achieved transmitter reten- tion times that exceeded those reported previously for other attachments used on alcids. Traditional suture and epoxy attachment methods were used on Xantus' Murrelets in 1995 and 1996, while the modified attachment was used for Xantus' Murrelets in 1996 and...
Emission of pesticides into the air
Berg F. Van Den F., R. Kubiak, W.G. Benjey, M.S. Majewski, S.R. Yates, G.L. Reeves, J.H. Smelt, A. M. A. Van Der Linden
1999, Conference Paper, Water, Air, and Soil Pollution
During and after the application of a pesticide in agriculture, a substantial fraction of the dosage may enter the atmosphere and be transported over varying distances downwind of the target. The rate and extent of the emission during application, predominantly as spray particle drift, depends primarily on the application method...
Effects of southern flying squirrels Glaucomys volans on red-cockaded woodpecker Picoides borealis reproductive success
K. S. Laves, Susan C. Loeb
1999, Animal Conservation (2) 295-303
Anecdotal data gathered from many populations suggest that southern flying squirrel (SFS, Glaucomys volans) use of the endangered red-cockaded woodpecker's (RCW, Picoides borealis) nest and roost cavities may negatively affect RCW populations. We conducted a controlled experiment to determine the effects of SFSs on RCW reproductive success. During the 1994 and 1995...
Recent advances in life history of Gulf of Mexico sturgeon, Acipenser oxyrinchus desotoi, in the Suwannee River, Florida, USA: A synopsis
K. J. Sulak, James P. Clugston
1999, Conference Paper, Journal of Applied Ichthyology
Gulf sturgeon spawn on portions of three sites in the upper Suwannee River, which may appropriately be described as spawning reefs. The same areas are utilized from year to year. Habitat factors important in spawning site determination include gravel/cobble substrate, the presence of eddy fields, a neutral to slightly alkaline...
Crystal growth mechanisms in miarolitic cavities in the Lake George ring complex and vicinity, Colorado
D. E. Kile, D. D. Eberl
1999, American Mineralogist (84) 718-724
The Crystal Peak area of the Pikes Peak batholith, near Lake George in central Colorado, is world-renowned for its crystals of amazonite (the blue-green variety of microcline) and smoky quartz. Such crystals, collected from individual miarolitic pegmatites, have a remakably small variation in crystal size within each pegmatite, and the...
Extirpation and recolonization in a metapopulation of an endangered fish, the tidewater goby
K. D. Lafferty, C. C. Swift, R.F. Ambrose
1999, Conservation Biology (13) 1447-1453
The tidewater goby (Eucyclogobius newberryi), an endangered species in the United States, occurs in a series of isolated coastal wetlands in California. Using historical presence-absence data and our own surveys, we estimated annual rates of extirpation and recolonization for several populations of the goby in southern California. As predicted, large...
Measurements of Reynolds stress profiles in unstratified tidal flow
M.T. Stacey, Stephen G. Monismith, J.R. Burau
1999, Journal of Geophysical Research C: Oceans (104) 10933-10949
In this paper we present a method for measuring profiles of turbulence quantities using a broadband acoustic doppler current profiler (ADCP). The method follows previous work on the continental shelf and extends the analysis to develop estimates of the errors associated with the estimation methods. ADCP data was collected in...
Fluid budgets at convergent plate margins: Implications for the extent and duration of fault-zone dilation
D.M. Saffer, B.A. Bekins
1999, Geology (27) 1095-1098
Faults at convergent plate boundaries are important conduits for fluid escape, and recent evidence suggests that fluid expulsion along them is both transient and heterogeneous. For the Nankai and Barbados convergent margins, we have used numerical models to investigate the long-term partitioning of...
Determination of uptake kinetics (sampling rates) by lipid-containing semipermeable membrane devices (SPMDs) for polycyclic aromatic hydrocarbons (PAHs) in water
J.N. Huckins, J. D. Petty, C.E. Orazio, J.A. Lebo, R.C. Clark, V.L. Gibson, W.R. Gala, K. R. Echols
1999, Environmental Science & Technology (33) 3918-3923
The use of lipid-containing semipermeable membrane devices (SPMDs) is becoming commonplace, but very little sampling rate data are available for the estimation of ambient contaminant concentrations from analyte levels in exposed SPMDs. We determined the aqueous sampling rates (R(s)s; expressed as effective volumes of water extracted daily) of the standard...
Phytoremediation of trichloroethene (TCE) using cottonwood trees
S.A. Jones, R. W. Lee, E. L. Kuniansky
Andrea Leeson, Bruce C. Alleman, editor(s)
1999, Conference Paper, Phytoremediation and innovative strategies for specialized remedial applications: Volume 5(6) of <i>Proceedings from the Battelle Memorial Institute international in situ and on-site bioreclamation symposium</i>
Phytoremediation uses the natural ability of plants to degrade contaminants in ground water. A field demonstration designed to remediate aerobic shallow ground water that contains trichloroethene began in April 1996 with the planting of cottonwood trees over an approximately 0.2-hectare area at the Naval Air Station, Fort Worth, Tx. Ground...
Use of generalized linear models and digital data in a forest inventory of northern Utah
Gretchen G. Moisen, Thomas C. Edwards Jr.
1999, Journal of Agricultural, Biological, and Environmental Statistics (4) 372-390
Forest inventories, like those conducted by the Forest Service's Forest Inventory and Analysis Program (FIA) in the Rocky Mountain Region, are under increased pressure to produce better information at reduced costs. Here we describe our efforts in Utah to merge satellite-based information with forest inventory data for the purposes of...
Geology and evolution of lakes in north-central Florida
J. L. Kindinger, J. B. Davis, J. G. Flocks
1999, Environmental Geology (38) 301-321
Fluid exchange between surficial waters and groundwater in karst environments, and the processes that control exchange, are of critical concern to water management districts and planners. High-resolution seismic data were collected from 30 lakes of north-central Florida. In each case study, lake structure and geomorphology were controlled by solution and/or...
Mass-balance measurements in Alaska and suggestions for simplified observation programs
D.C. Trabant, R.S. March
1999, Geografiska Annaler, Series A: Physical Geography (81) 777-789
US Geological Survey glacier fieldwork in Alaska includes repetitious measurements, corrections for leaning or bending stakes, an ability to reliably measure seasonal snow as deep as 10 m, absolute identification of summer surfaces in the accumulation area, and annual evaluation of internal accumulation, internal ablation, and glacier‐thickness changes.Prescribed field...
Comparison of temporal trends in ambient and compliance trace element and PCB data in pool 2 of the Mississippi River, USA, 1985-1995
J. Anderson, J. Perry
1999, Environmental Management (24) 497-507
The Intergovernmental Task Force on Monitoring has suggested studies on ambient (in-stream) and compliance (wastewater) data to determine if monitoring can be reduced locally or nationally. The similarity in temporal trends between retrospective ambient and compliance water-quality data collected from Pool 2 of the Mississippi River, USA, was determined for...
Behavioral correlates of heart rates of free-living Greater White-fronted Geese
Craig R. Ely, David H. Ward, Karen S. Bollinger
1999, Condor (101) 390-395
We simultaneously monitored the heart rate and behavior of nine free-living Greater White-fronted Geese (Anser albifrons) on their wintering grounds in northern California. Heart rates of wild geese were monitored via abdominally-implanted radio transmitters with electrodes that received electrical impulses of the heart and emitted a radio signal with each...
Style and origin of mid-Carboniferous deformation in the Illinois Basin, USA - Ancestral rockies deformation?
J.H. McBride, W.J. Nelson
1999, Tectonophysics (305) 249-273
The integration of outcrop, borehole, and seismic reflection data from the Illinois Basin and adjacent eastern Ozark Dome in Illinois and Missouri sheds new light on the style and origin of intra-cratonic deformation. Typical structures of this region are high-angle reverse faults in Precambrian basement that propagated upward to monoclines...
Standards for assessment of age and growth data for channel catfish
W.A. Hubert
1999, Journal of Freshwater Ecology (14) 313-326
Standards for the assessment of age and growth data for channel catfish (Ictalurus punctatus) were developed using published data. A representative set of 102 studies of individual populations from across the geographic range of channel catfish was selected. Percentile values (5, 10, 25, 50, 75, 90, and 95th)...
Active tectonics of the Seattle fault and central Puget sound, Washington - Implications for earthquake hazards
S. Y. Johnson, S. V. Dadisman, J.R. Childs, W. D. Stanley
1999, Geological Society of America Bulletin (111) 1042-1053
We use an extensive network of marine high-resolution and conventional industry seismic-reflection data to constrain the location, shallow structure, and displacement rates of the Seattle fault zone and crosscutting high-angle faults in the Puget Lowland of western Washington. Analysis of seismic profiles extending 50 km across the Puget Lowland from...
How many stakes are required to measure the mass balance of a glacier?
A. G. Fountain, A. Vecchia
1999, Geografiska Annaler, Series A: Physical Geography (81) 563-573
Glacier mass balance is estimated for South Cascade Glacier and Maclure Glacier using a one-dimensional regression of mass balance with altitude as an alternative to the traditional approach of contouring mass balance values. One attractive feature of regression is that it can be applied to...
