Proceedings of a workshop on the development and evaluation of habitat suitability criteria: A compilation of papers and discussions presented at Colorado State University, Fort Collins, Colorado, December 8-12, 1986
Ken Bovee, J.R. Zuboy
1988, Book
The development of reliable habitat suitability criteria is critical to the successful implementation of the Instream Flow Incremental Methodology (IFIM), or any other habitat based evaluation technology. It is also a fascinating topic of research, for several reasons. First, the “science” of habitat quantification is relatively young. Descriptions of habitat...
Habitat requirements of New Mexico’s endangered salamanders
Cindy A. Ramotnik, N.J. Scott
1988, Report, Management of amphibians, reptiles, and small mammals in North America: Proceedings of the symposium
We measured habitat components for two state-listed endangered salamanders in New Mexico in 1986 and 1987. Both species are restricted to mesic environments within high-elevation, mixed coniferous forests. Steep slope and high elevation were the most useful variables for predicting the occurrence of Jemez Mountains salamanders and Sacramento Mountain salamanders,...
Earthquakes, January-February 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 124-128
There was one major earthquake (7.0-7.9) during this reporting period, located in the Philippine Islands on February 24. The first earthquake-related deaths fro the year were reported in South Africa, Bangladesh, and California. In the United States, Southern California experienced a moderate earthquake on February 11. ...
A finite element model for tides and currents with field applications
Roy A. Walters
1988, Communications in Applied Numerical Methods (4) 401-411
A finite element model, based upon the shallow water equations, is used to calculate tidal amplitudes and currents for two field-scale test problems. Because tides are characterized by line spectra, the governing equations are subjected to harmonic decomposition. Thus the solution variables are the real and imaginary parts of the...
Simulation and video animation of canal flushing created by a tide gate
David H. Schoellhamer
1988, Conference Paper
A tide-gate algorithm was added to a one-dimensional unsteady flow model that was calibrated, verified, and used to determine the locations of as many as five tide gates that would maximize flushing in two canal systems. Results from the flow model were used to run a branched Lagrangian transport model...
Geochemistry of groundwater in tertiary and cretaceous sediments of the southeastern Coastal Plain in eastern Georgia, South Carolina, and southeastern North Carolina
Roger W. Lee, Donald J. Strickland
1988, Water Resources Research (24) 291-303
Geochemical samples of groundwater taken along hydrologic flow paths in eastern Georgia, South Carolina, and southeastern North Carolina, from noncalcareous sand aquifers, largely of Cretaceous age, are dominated by sodium and bicarbonate ions. Calcareous sand aquifers, largely of Tertiary age, contain water whose chemistry is dominated by calcium and bicarbonate...
Some considerations in modeling the mallard life cycle
Douglas H. Johnson, J.D. Nichols, M.J. Conroy, L.M. Cowardin
M.W. Weller, editor(s)
1988, Book chapter, Waterfowl in winter
We outline a population model proposed to accommodate the full life cycle of the mallard (Anas platyrhynchos). Events during the breeding season are better understood than events at other times of the year, but recent findings suggest the importance of phenomena away from the breeding grounds. Several processes are discussed...
Earthquakes, May-June 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 196-198
There were no major earthquakes during the months of May and June. Only one earthquake-related death was reported; this occurred on June 20 in the Philippine Islands. In the United States, three moderate earthquakes were expereinced in California but none crashed deaths or injuries. ...
Use of the truncated shifted Pareto distribution in assessing size distribution of oil and gas fields
J.C. Houghton
1988, Mathematical Geology (20) 907-937
The truncated shifted Pareto (TSP) distribution, a variant of the two-parameter Pareto distribution, in which one parameter is added to shift the distribution right and left and the right-hand side is truncated, is used to model size distributions of oil and gas fields for resource assessment. Assumptions about limits to...
Multi-model approach to petroleum resource appraisal using analytic methodologies for probabilistic systems
R. A. Crovelli
1988, Mathematical Geology (20) 955-972
The geologic appraisal model that is selected for a petroleum resource assessment depends upon purpose of the assessment, basic geologic assumptions of the area, type of available data, time available before deadlines, available human and financial resources, available computer facilities, and, most importantly, the available quantitative methodology with corresponding computer...
Liquid-vapor relations in the critical region of the system NaCl-H2O from 380 to 415°C: A refined determination of the critical point and two-phase boundary of seawater
James L. Bischoff, Robert J. Rosenbauer
1988, Geochimica et Cosmochimica Acta (52) 2121-2126
Pressure-temperature-composition (P-T-x) relations for coexisting vapor and liquid phases in the system NaCl-H2O were determined experimentally in the critical region from 380 to 415°C. The results provide much improved control on the P-T-x critical line in this region. The critical point of seawater (3.2 wt% NaCl solution), which is bracketed in the...
A conceptual framework for assessing cumulative impacts on the hydrology of nontidal wetlands
Thomas C. Winter
1988, Environmental Management (12) 605-620
Wetlands occur in geologic and hydrologic settings that enhance the accumulation or retention of water. Regional slope, local relief, and permeability of the land surface are major controls on the formation of wetlands by surface-water sources. However, these landscape features also have significant control over groundwater flow systems, which commonly...
Earthquakes, March-April 1988
W. J. Person
1988, Earthquakes & Volcanoes (USGS) (20) 167-171
There were two major earthquakes (7.0-7.9) during this reporting period. the first, a magnitude 7.6, was centered in the Gulf of Alaska on March 6 and the second, a magnitude 7.0, occurred near the coast of southern Peru on April 12. In the United States, the largest earthquake was the magnitude...
Cyclic development of igneous features and their relationship to high-temperature hydrothermal features in the Henderson porphyry molybdenum deposit, Colorado
R.B. Carten, E. P. Geraghty, B.M. Walker
1988, Economic Geology (83) 266-296
The Henderson porphyry molybdenum deposit was formed by the superposition of coupled alteration and mineralization events, of varying intensity and size, that were associated with each of at least 11 intrusions. Deposition of molybdenite was accompanied by time-equivalent silicic and potassic alteration. High-temperature alteration and mineralization are spatially and temporally...
The mechanics and three-dimensional internal structure of active magmatic systems: Kilauea volcano, Hawaii
M.P. Ryan
1988, Journal of Geophysical Research Solid Earth (93) 4213-4248
Interpretation of abundant seismic data suggests that Kilauea's primary conduit within the upper mantle is concentrically zoned to about 34-km depth. This zoned structure is inferred to contain a central core region of relatively higher permeability, surrounded by numerous dikes that are in intermittent hydraulic communication with each other and...
Identification, movement, growth, mortality, and exploitation of walleye stocks in Lake St. Clair and the western basin of Lake Erie
Robert C. Haas, Mary C. Fabrizio, Thomas N. Todd
1988, Fisheries Research Report 1954
The harvest of walleye by sport and commercial fisheries in lakes St. Clair and Erie is under a cooperative management program involving several states and two countries. In this report we present the results of a long-term tag-recapture study as well as corroborative evidence of stock discreteness fromstudies of...
Composition and stable-isotope geochemistry of natural gases from Kansas, Midcontinent, U.S.A.
P.D. Jenden, K.D. Newell, I.R. Kaplan, W.L. Watney
1988, Chemical Geology (71) 117-147
More than 28??1012 ft.3 (79??1010 m3) of natural gas and 5.3??109 bbl (8.4??108 m3) of oil have been produced in Kansas, U.S.A., from Paleozoic carbonate and sandstone reservoirs on structural uplifts and shallow embayments along the northern margin of the Anadarko basin. A heavily-explored, geologically well-characterized state, Kansas is an...
Elastic-wave propagation and site amplification in the Salt Lake Valley, Utah, from simulated normal faulting earthquakes
H.M. Benz, R. B. Smith
1988, Bulletin of the Seismological Society of America (78) 1851-1874
The two-dimensional seismic response of the Salt Lake valley to near- and far-field earthquakes has been investigated from simulations of vertically incident plane waves and from normal-faulting earthquakes generated on the basin-bounding Wasatch fault. The response to normal faulting earthquakes was simulated using a two-dimensional finite-element method and the plane-wave...
Uranium-series age estimates and paleoclimatic significance of Pleistocene tufas from the Lahontan basin, California and Nevada
Y. Lao, L. Benson
1988, Quaternary Research (30) 165-176
An extended chronology of Lahontan basin lake levels based on uranium-series age estimates correlates with the global ice-volume record. Lake highstands occur at or shortly after times of maximum ice-sheet size. Moderate size lakes occur when the global ice volume is about 80% of its maximum. The data indicate that...
A simple model for strong ground motions and response spectra
Erdal Safak, Charles Mueller, John Boatwright
1988, Earthquake Engineering and Structural Dynamics (16) 203-215
A simple model for the description of strong ground motions is introduced. The model shows that response spectra can be estimated by using only four parameters of the ground motion, the RMS acceleration, effective duration and two corner frequencies that characterize the effective frequency band of the motion. The model...
Fate of acetone in an outdoor model stream in southern Mississippi, U.S.A.
R. E. Rathbun, D. W. Stephens, D.J. Shultz, D. Y. Tai
1988, Journal of Hydrology (104) 181-209
The fate of acetone in water was investigated in an outdoor model stream located in southern Mississippi, U.S.A. Acetone was injected continuously for 32 days resulting in small milligram-perliter concentrations in the stream. Rhodamine-WT dye was injected at the beginning and at the end of the study to determine the...
Acute toxicity of Daphnia pulex to six classes of chemical compounds potentially hazardous to Great Lakes aquatic biota
Stephen B. Smith, Jacqueline F. Savino, Marc A. Blouin
1988, Journal of Great Lakes Research (14) 394-404
Of the six classes of chemicals potentially hazardous to Great Lakes aquatic biota, derivatives of polyaromatic hydrocarbons (PAHs) were the most acutely toxic (48-h EC 50) to Daphnia pulex. The other classes, listed in order of decreasing toxicity were alkyl halides, nitrogen-containing compounds, cyclic alkanes, heterocyclic nitrogen compounds, silicon-containing...
Pyrolysis g.c.-m.s. of a series of degraded woods and coalified logs that increase in rank from peat to subbituminous coal
Patrick G. Hatcher, H. E. Lerch III, R. K. Kotra, T.V. Verheyen
1988, Fuel (67) 1069-1075
Xylem tissue from degraded wood and coalified logs or stems was examined by pyrolysis g.c.-m.s. to improve understanding of the coalification process. The pyrolysis data, when combined with solid-state 13C n.m.r. data for the same samples, show several stages of evolution during coalification. The first stage, microbial degradation in peat, involves...
Analysis of geophysical well logs obtained in the State 2-14 borehole, Salton Sea geothermal area, California
Frederick L. Paillet, R. H. Morin
1988, Journal of Geophysical Research Solid Earth (93) 12981-12994
A complete suite of conventional geophysical well logs was obtained in the upper part of a 3220-m- deep borehole drilled into geothermally altered alluvial sediments on the southeastern edge of the Salton Sea. In situ temperatures greater than 300°C and an inability to cool parts of the borehole by circulation...
HELIOTHERMAL LAKE MODEL OF BORATE DEPOSITION IN THE MIOCENE FURNACE CREEK FORMATION, DEATH VALLEY REGION, CALIFORNIA.
Charles E. Barker, James M. Barker
Grayson S.J.Smith D.A., editor(s)
1988, Conference Paper, Preprint - Society of Mining Engineers of AIME
Heliothermal lakes are density-stratified with shallow submerged margins surrounding areally restricted deep pool(s) containing a dense brine overlain by a much less dense brine. The reflective brine interface allows solar energy to be trapped in the dense brine which may warm to over 90 degree C. Carbonate precipitated from the...
