Three-dimensional model simulation of steady-state ground-water flow in the Albuquerque-Belen Basin, New Mexico
J. M. Kernodle, W. B. Scott
1986, Water-Resources Investigations Report 84-4353
As part of the Southwest Alluvial Basins study, model was constructed to simulate the alluvial aquifer system underlying the Albuquerque-Belen Basin. The model was used to simulate the steady-state flow condition assumed to have existed prior to 1960. Until this time there apparently were no long-term groundwater level changes of...
Mines and prospects of the Butte 1° x 2° Quadrangle, Montana
James E. Elliott, Jeffrey S. Loen, K. K. Wise, Michael J. Blaskowski
1986, Open-File Report 86-632
The Butte quadrangle, in the Northern Rocky Mountains of southwestern Montana, has had a long, productive, and colorful mining history. Butte, the city from which the quadrangle takes its name, is located in the most famous mining district of the quadrangle. This district, the Butte or Summit Valley district, has...
Habitat Suitability Index Models and Instream Flow Suitability Curves: Chinook salmon
Robert F. Raleigh, William J. Miller, Patrick C. Nelson
1986, FWS/OBS 82/10.122
A review and synthesis of existing information were used to develop a Habitat Suitability Index (HSI) model for the Chinook salmon (Oncorhynchus tshawytscha). The model consolidates habitat use information into a framework appropriate for field application, and is scaled to produce an index between 0.0 (unsuitable habitat) to 1.0 (optimum...
Discharge ratings for control gates at Mississippi River Lock and Dam 13, Fulton, Illinois
Albert J. Heinitz
1986, Water-Resources Investigations Report 86-4134
The water level of the navigation pools on the Mississippi River are maintained by the operation of tainter and roller gates at the locks and dams. Discharge ratings for the gates on Lock and Dam 13, at Fullerton, Illinois, were developed from current-meter discharge measurements made in the forebays of...
Simulation of streamflow temperatures in the Yakima River basin, Washington, April-October 1981
J. J. Vaccaro
1986, Water-Resources Investigations Report 85-4232
The effects of storage, diversion, return flow, and meteorological variables on water temperature in the Yakima River, in Washington State, were simulated, and the changes in water temperature that could be expected under four alternative-management scenarios were examined for improvement in anadromous fish environment. A streamflow routing model and Lagrangian...
Hydrology of carbonate aquifers in southwestern Linn County and adjacent parts of Benton, Iowa, and Johnson Counties, Iowa
Kenneth Wahl, Bill J. Bunker
1986, Water Supply Bulletin 15
Groundwater is the major source of water in Linn County and the surrounding area. Approximately 90 percent of the groundwater production is from Silurian, Devonian, and Quaternary aquifers. The Silurian and Devonian aquifers consist of limestone and dolomite with minor shale beds, which have a regional dip to the southwest of...
An oil spill and hazardous waste vulnerability modeling approach (Coastal Louisiana)
Floyd O. Stayner, James B. Johnston, James D. Scurry
1986, Conference Paper, Geographic information systems for environmental protection : A workshop
No abstract available....
A two-water model of aluminum mobilization and immobilization in a natural soil system
Isabelle M. Cozzarelli
1986, Thesis
No abstract available....
Morphology and age of fault scarps in the Rio Grande Rift, south-central Colorado
Steven M. Colman, William P. Rogers, R. M. Kirkham
William P. Rogers, Robert M. Kirkham, editor(s)
1986, Report, Contributions to Colorado Seisrnicity and Tectonics: A 1986 Update
Fault scarps in the Rio Grande rift of Colorado provide most of the evidence of paleoseismicity in the state, and are thus a major focus of assessments of earthquake hazards. Critical components of such assessments are the ages of past faulting events; age control is scarce and generally coarse for...
The non-transferability of a Cretaceous coal model in the San Juan Basin of New Mexico and Colorado
James E. Fassett
1986, GSA Special Papers (210) 155-171
The San Juan Basin of northwest New Mexico and southwest Colorado contains several Upper Cretaceous coal-bearing formations. The coals in these formations were deposited in environments associated with repeated transgressions and regressions of the Western Interior seaway in Late Cretaceous time. A detailed subsurface and surface study of the coal...
A population model for a long-lived, resprouting chaparral shrub: Adenostoma fasciculatum
Thomas J. Stohlgren, Philip W. Rundel
1986, Ecological Modelling (34) 245-257
Extensive stands of Adenostoma fasciculatum H.&A. (chamise) in the chaparral of California are periodically rejuvenated by fire. A population model based on size-specific demographic characteristics (thinning and fire-caused mortality) was developed to generate probable age distributions within size classes and survivorship curves for typical stands. The model was modified to...
Mississippi embayment aquifer system in Mississippi: Geohydrologic data compilation for flow model simulation
J. K. Arthur, R.E. Taylor
1986, Journal of the American Water Resources Association (22) 1021-1029
As part of the Gulf Coast Regional Aquifer System Analysis (GC RASA) study, data from 184 geophysical well logs were used to define the geohydrologic framework of the Mississippi embayment aquifer system in Mississippi for flow model simulation. Five major aquifers of Eocene and Paleocene age were defined within this...
Environmental regulation and influence of the eyes and pineal gland on the gonadal cycle and spawning in channel catfish (Ictalurus punctatus)
K. B. Davis, C. A. Goudie, B.A. Simco, R. MacGregor III, N. C. Parker
1986, Ecological and Evolutionary Physiology (59) 717-724
Blinded, pinealectomized, or blinded and pinealectomized female channel catfish (Ictalurus punctatus) were placed with normal (unoperated on) control fish in outdoor tanks at constant temperature (21 ± 2 C) or earthen ponds (ambient conditions) in February or August, when they were 21 or 27 mo old. Fish were sampled through...
Fire adaptation in Neblinaria celiae (Theaceae), a high-elevation rosette shrub endemic to a wet equatorial tepui
T.J. Givnish, R.W. McDiarmid, W.R. Buck
1986, Oecologia (70) 481-485
Neblinaria celiae (Theaceae), a rosette shrub endemic to the exceedingly rainy summit of remote Cerro de la Neblina in southern Venezuela, has a previously undescribed set of adaptations to fire. Its growth form entails sparse branching, massive terminal leaf rosettes, and thick bark. It is highly fire-tolerant, with a survival rate...
Changing climate: Geothermal evidence from permafrost in the Alaskan Arctic
Arthur H. Lachenbruch, B. Vaughan Marshall
1986, Science (234) 689-696
Temperature profiles measured in permafrost in northernmost Alaska usually have anomalous curvature in the upper 100 meters or so. When analyzed by heat-conduction theory, the profiles indicate a variable but widespread secular warming of the permafrost surface, generally in the range of 2 to 4 Celsius degrees during the last...
The Center Pond pluton: The restite of the story (phase separation and melt evolution in granitoid genesis)
T. A. Scambos, M.C. Loiselle, D. R. Wones
1986, American Journal of Science (286) 241-280
The Center Pond pluton is a calc-alkaline post-tectonic Acadian body intruding chlorite grade Silurian metasediments of E-central Maine. Mapping and petrographic work reveal that the pluton contains 5 igneous rock types; quartz diorite, hornblende-biotite granodiorite, biotite granite, porphyritic granite, and aplitic granite. The linearity of major and trace element trends...
Influence of welded boundaries in anelastic media on energy flow, and characteristics of P, S-I, and S-II waves: Observational evidence for inhomogeneous body waves in low-loss solids
Roger D. Borcherdt, Gary Glassmoyer, Leif Wennerberg
1986, Journal of Geophysical Research B: Solid Earth (91) 11503-11518
A general computer code, developed to calculate anelastic reflection-refraction coefficients, energy flow, and the physical characteristics for general P, S-I, and S-II waves, quantitatively describes physical characteristics for wave fields in anelastic media that do not exist in elastic media. Consideration of wave fields incident on boundaries between anelastic media shows that scattered...
Short-period strain (0.1–105 s): Near-source strain field for an earthquake (ML 3.2) near San Juan Bautista, California
M.J.S. Johnston, Roger D. Borcherdt, A. T. Linde
1986, Journal of Geophysical Research B: Solid Earth (91) 11497-11502
Measurements of dilational earth strain in the frequency band 25–10−5 Hz have been made on a deep borehole strainmeter installed near the San Andreas fault. These data are used to determine seismic radiation fields during nuclear explosions, teleseisms, local earthquakes, and ground noise during seismically quiet times. Strains of less than...
Landform modifications at a nuclear-waste burial site
J. R. Gray
1986, Conference Paper, Proceedings, Fourth Federal Interagency Sedimentation Conference: Interagency Advisory Committee on Water Data, Subcommittee on Sedimentation, Las Vegas
No abstract available....
Monitoring grizzly bear population trends
L.L. Eberhardt, R.R. Knight, B.M. Blanchard
1986, Journal of Wildlife Management (50) 613-618
A simple different equation model was developed to provide additional perspective on observed mortality and trend data on Yellowstone grizzly bears (Ursus arctos horribilis). Records of mortalities of adult females from 1959 to 1985 were utilized, in conjunction with data on females with cubs. The overall downward trend...
Introduction to stream network habitat analysis
John M. Bartholow, Terry J. Waddle
1986, Report
Increasing demands on stream resources by a variety of users have resulted in an increased emphasis on studies that evaluate the cumulative effects of basinwide water management programs. Network habitat analysis refers to the evaluation of an entire river basin (or network) by predicting its habitat response to alternative...
Recovery of compacted soils in Mojave Desert ghost towns
Robert H. Webb, John W. Steiger, Howard G. Wilshire
1986, Soil Science Society of America Journal (50) 1341-1344
Residual compaction of soils was measured at seven sites in five Mojave Desert ghost towns. Soils in these Death Valley National Monument townsites were compacted by vehicles, animals, and human trampling, and the townsites had been completely abandoned and the buildings removed for 64 to 75 yr. The soils studied...
Theory, construction and operation of simple tensiometers
David I. Stannard
1986, Groundwater Monitoring and Remediation (6) 70-78
The tensiometer, introduced by Richards and Gardner (1936) has been a tool often ignored in unsaturated zone investigations. Hazardous waste disposal studies that require values of unsaturated zone matric potentials will expand tensiometer use. Familiarity with operation and installation principles is necessary to ensure quality data collection.The essential elements of...
The temperature dependence of isothermal moisture vs. potential characteristics of soils
J. R. Nimmo, E.E. Miller
1986, Soil Science Society of America Journal (50) 1105-1113
A method has been developed for rapid, transient measurement of hysteretic soil-moisture characteristics as a function of temperature. While a varying soil-water pressure was imposed on a thin sample by means of flexible membranes held in firm contact with the soil, water content was measured by gamma-ray attenuation, and matric...
Hydrogeochemistry of sulfide and arsenic-rich tailings and alluvium along Whitewood Creek, South Dakota (Part 1 of 3 parts)
F. M. M. Morel, J. Rouse, J. L. Schnoor, M. G. Wolman, J. A. Cherry
1986, Mineral & Energy Resources (29)
During 100 years prior to 1977, Whitewood Creek, SD, received about 1 billion tons of arsenic-rich and sulfide-mineral rich tailings from gold mining operations. A hydrogeochemical investigation conducted in 1983-84 focused on four local study areas on the flood plain where tailings deposits exist on top of moderately permeable alluvium....
