Physical Sciences and Mathematics Commons^™

Nebraska Groundwater Level (Decline & Rise) And Location Of Registered Wells, 1983

Conservation and Survey Division

No abstract provided.

Variation Of Whole Body Components As An Indicator Of Habitat Quality In Geomys Bursarius And Peromyscus Maniculatus, Joseph W. Nietfeldt

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Energy Conservation In Corn Production, Wilbur W. Frye

Soil Science News and Views

On-farm production of food and fiber uses about 3% of the annual U.S. energy consumption. About one-third of this energy is directly from fossil fuels used in farm tractors and trucks and for crop drying, while about one-fourth is used in manufacturing and transporting fertilizers. Tillage and N fertilizers are the two largest uses of energy in non-irrigated product ion of crops which are not dried artificially. Thus, the greatest effects of energy conservation can be achieved in these two areas.

Geology Newsletter- 1982, Department Of Geology

Geological and Environmental Sciences News

Vol. 1 No. 7

• Dear Alumni and Friends
• Capital Fund Drive
• Geology/ Earth Science Club News
• Faculty News
• Alumni News

Review Of Current Drainage Investigations In Western Australia, R A. Nulsen

Resource management technical reports

No abstract provided.

Progress Report On Effects Of Contour Banking On Surface Runoff At The Berkshire Valley Experimental Catchment (Near Moora) 1961-82, K J. Bligh

Resource management technical reports

The time lag prior to peak runoff following rains of comparable high intensity increased by approximately 80 per cent in the largest event after the construction of contour banks. Although 80 per cent more runoff also occurred because the catchment was wetter and had been cultivated for three years in a row, the peak rate of runoff increased by only approximately 20 per cent. That the peak rate was not increased by 80 per cent, may be primarily attirbuted to the effect of the contour banks.

Curbur Station : Inventory Of The Range And Its Management, Alexander Mcrae Holm

Resource management technical reports

Ten land systems were identified, descriped and mapped. potential feed status was assessed for each land system. The land systems were then ranked accordingly and stocking rates allocated. Wongdong saline shrublands was considered to be the most productive system and Narryer hills, outcrops and breakaways the least productive. An assessment was made of the range condition and erosion status of the least. These assessments indicated that most of the pastures had been heavily utilized in the past.

Quobba Point Chalet Development Land Capability Study [And] Environmental Consideration, J R H Riches, L E. Chalmers

Resource management technical reports

The preferred area for development is the Old Stabilised Dune System. The Hind Dune Flat is a stable area but is limited in size. Other environmental and town planning considerations may militate against development of this area for Chalet Development.

Mass And Energy Exchanges Of Soybeans: Microclimate-Plant Architectural Interactions, Dennis D. Baldocchi

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Does No-Till Change Soil Management Practices?, Robert L. Blevins

Soil Science News and Views

Successful no-tilling requires a different approach to soil management practices. Since continuous no-tillage systems leave residues on the soil surface without mechanically mixing them into the plow layer and since lime and fertilizer are surface-applied, no-tilled soils have biological, chemical and physical properties contrasting with those of a plowed soil. For any crop production system to be widely accepted and used it must provide and maintain desirable physical properties of the soil, control erosion and replace nutrients removed by crops and other losses. This can be accomplished in a no-till system if proper management is used.

Evaluation Of Low-Temperature Geothermal Potential In Cache Valley, Utah, Janet L. De Vries

All U.S. Government Documents (Utah Regional Depository)

The purpose of this research was to continue the assessment of the low-temperature geothermal resources of Cache Valley, Utah initiated by the Utah Geological and Mineral Survey under U.S. Department of Energy (DOE) contract DE-AS07-77ET 28393. Field work consisted of locating 90 wells and springs throughout the study area, collecting water samples for later laboratory analyses, and field measurement of pH, temperature, bicarbonate alkalinity, and electrical conductivity. Na+, K+, Ca+2, Mg+2, SiO2, Fe, SO4-2, C1-, F-, and total dissolved solids were determined in the laboratory. Temperature profiles were measured in 12 additional, unused wells. Thermal gradients calculated from the profiles …

Toxic Organic Compounds In Surface Sediments From Elizabeth And Patapsco Rivers And Estuaries, Rudolph H. Bieri, Chris Hein, Robert J. Huggett, Philip Shou, Harold Slone, Craig Smith, Chih-Wu Su

Reports

This study is an extension of a Chespeake Bay-wide analysis of toxic organic substances into the Elizabeth and Patapsco River subestuaries. Twenty-eight surface sediment samples from the.Elizabeth River and 40 surface sediment samples from the Patapsco, were analyzed in detail for the presence of mainly aromatic and polar organic compounds. Approximately 310 distinct compounds were identified by gas chromatography-mass spectrometry in the Elizabeth River samples, and about 480 in the Patapsco. Total aromatic concentrations ranged from 440,000 to 3,100 ppb in the Elizabeth and from 2.7 x 106 to 6100 ppb in the Patapsco. Similar to observation in the.Chesapeake Bay, …

Soil Ph: What It Is, How It Is Measured, Why It Is Important, John H. Grove

Soil Science News and Views

Soil pH is related to the hydrogen ion (H⁺) activity of the soil-water system. The chemical definition of pH is as follows: pH=-log (H⁺). In other words, for a pH drop of 1 unit (e. g. from pH 6 to pH 5) there will be a ten~fold increase in H⁺ activity in the soil solution. If pH 1 rises by 1 unit, only one-tenth as much acidity will be present in solution. As such, pH is only a measure of the active acidity in the soil water solution bathing plant roots. This fraction of total …

Southeastern Utah Nuclear Waste Transportation Study, Bechtel Group Inc.

All U.S. Government Documents (Utah Regional Depository)

This report is published as a product of the National Waste Terminal Storage (NWTS) Program. The objective of this program is the development of terminal waste storage facilities in deep stable geologic formations for high-level nuclear waste, including spent fuel elements from commercial power reactors and transuranic nuclear waste for which the Federal Government is responsible.

The initial purpose of this study was to analyze and compare possible transport modes and corridors connecting each of four candidate sites in Utah with existing rail lines of the Denver and Rio Grande Western Railroad (D&RG) or the Atchison, Topeka, and Santa Fe …

Research On Atmospheric Volcanic Emissions: An Overview, James P. Friend, Alan R. Bandy, Jarvis L. Moyers, William H. Zoller, Richard E. Stoiber, Arnold L. Torres, William I. Rose, M. Patrick Mccormick, David C. Woods

Department of Geological and Mining Engineering and Sciences Publications

The project "Research on Atmospheric Volcanic Emissions" is a unique effort by NASA and university scientists to investigate the detailed chemical nature of plumes from volcanic eruptions. The major goals of the project are to: 1) understand the impact major eruptions will have on atmospheric chemistry processes, 2) understand the importance of volcanic emissions in the atmospheric geochemical cycles of selected species, 3) use knowledge of the plume chemical composition to diagnose and predict magmatic processes. Project RAVE'S first mission used the NASA Lockheed Orion P-3 outfitted with equipment to measure concentrations of the gases SO₂, OCS, H …

Liming Tobacco Soils, J. L. Sims

Soil Science News and Views

Control of soil acidity by liming is very important in successful tobacco culture. Adding lime to an acid soil increases the availability of nearly all plant nutrient elements, increases the efficiency of added fertilizers, and prevents the toxic effects of high concentrations of soluble aluminum, manganese, and iron. It is a natural tendency for most Kentucky soils to become acid with time due to losses of bases (calcium, magnesium, potassium, and sodium) from soil by rainfall, However, tobacco soils possess certain unique problems that warrant careful monitoring of soil pH every two to three years.

Gully, Scour Hole, And Pothole Development At The Base Of The Gering Formation (Miocene?), Southeastern Banner County, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Several sediment-filled paleovalleys belonging to the Arikaree Group of Miocene (?) age occur in southeastern Banner County, Nebraska. One gully and a main paleovalley exhibit, respectively, erosional features like those in modern gullies in the area and like those on the bedrock floors of modern straight streams carrying an appreciable sediment load. Scour holes and a pothole on the valley floor of the main paleovalley are similar to those produced experimentally on the bed of a straight stream.

Early History Of The Atlantic Ocean And Gas Hydrates On The Blake Outer Ridge: Results Of The Deep Sea Drilling Project Leg 76, Robert E. Sheridan, Felix M. Gradstein, Leo A. Barnard, Deborah M. Bliefnick, Dan Habib, Peter D. Jenden, Hideo Kagami, Everly M. Keenan, John Kostecki, Keith A. Kvenvolden, Michel Moullade, James Ogg, Alastair H.F. Robertson, Peter H. Roth, Thomas H. Shipley, Larry Wells, Jay L. Bowdler, Pierre H. Cotillon, Robert B. Halley, Hajimu Kinoshita, James W. Patton, Kenneth A. Pisciotto, Isabella Premoli-Silva, Margaret M. Testarmata, Richard V. Tyson, David K. Watkins

Department of Earth and Atmospheric Sciences: Faculty Publications

Leg 76 of the Deep Sea Drilling Project achieved two major scientific objectives. The first objective was met at Site 533, where on the Blake Outer Ridge, gas hydrates were identified by geophysical, geochemical, and geological studies. Gas-hydrate decomposition produced a volumetric expansion of 20:1 of gas volume to pore-fluid volume; this expansion exceeded by about a factor of four the volume of gas that could be released from solution in pore water under similar conditions. The gas hydrate includes methane, ethane, propane, and isobutane but apparently excluded normal butane and higher molecular weight hydrocarbons as predicted from gas hydrate …

Fall Fertilization Programs, William O. Thom

Soil Science News and Views

Achieving recommended fertility levels for the next season's crop is important enough that it should not be subject to all the uncertainties of spring weather. Fall offers more time for careful planning of fertilizer and lime requirements based on good soil tests. Fields are generally in good condition to support application equipment without creating excessive soil compaction.

Atrazine Degradation, Sorption And Bioconcentration In Water Systems, Duane C. Wolf, Ramon L. Jackson

Technical Reports

The herbicide atrazine is used extensively to control broadleaf and grass weeds in such crops as sorghum and corn. A small portion of the atrazine may be lost from the area of application by surface runoff and could enter a stream or lake. The objective of this study was to evaluate atrazine degradation, sorption, and bioconcentration in watersediment systems. The results indicated that sediments with lower pH values and higher organic matter levels adsorbed higher levels of atrazine than sediments with neutral pH values and lower organic matter levels. Microbial decomposition of the herbicide was slow under the conditions of …

Groundwater In The Inner Bluegrass Karst Region, Kentucky, John Thrailkill, Lawrence E. Spangler, William M. Hopper Jr., Michael R. Mccann, Joseph W. Troester, Douglas R. Gouzie

KWRRI Research Reports

The hydrogeology of about 12% of the 5600 km² Inner Bluegrass Karst Region of central Kentucky was investigated by water tracing and other techniques. Using fluorescent dyes adsorbed on fabric and charcoal detectors, 96 traces (average length 2.7 km, maximum length 15 km) resulted in the identification of 38 groundwater basins (with areas up to 15 km²). Within the basins, subsurface flow is in a dendritic conduit system at depths up to 30 m below the surface, while in the interbasin areas which separate them flow is generally less than 5 m deep. Each groundwater basin discharges …

Seasonal And Yearly Fluctuations Of Soil Tests, Lloyd W. Murdock

Soil Science News and Views

One of the most important management tasks of a good farmer is taking a good soil sample. The recommendations based on these samples will help determine yield and profitability. A number of factors have an effect on the soil test results.

An Ecological Analysis Of Relic Diatoms In Sediments Of Las Vegas Bay, Lake Mead, David Ross Hetzel

Publications (WR)

Relic diatoms in sediments of the inner Las Vegas Bay, near the Las Vegas Wash sewage inflow, were examined in order to assess historic trophic conditions in this area of Lake Mead. Diatom sedimentation rates and ratios of Araphidineae/Centrales (A/C) diatom groups were determined from sediment cores collected in the old wash channel 1.5 km from the sewage inflow (station 2), in a small cove 1.5 km further downstream (station 3) and in an adjacent embayment off Gypsum Wash (station 4). Diatom sedimentation rates generally increased from the bottom to the top of each core, but pronounced minima existed at …

Nebraska's Platte River: A Graphic Analysis Of Flows, Ray Bentall

Conservation and Survey Division

WSP-53

Impact Of Urban Stormwater Runoff On The Water Quality Of The Subsurface Lost River, Bowling Green, Kentucky, Donald Rice

Masters Theses & Specialist Projects

Bowling Green, Kentucky is located in a distinctive karst region, characterized by subsurface drainage. The Lost River is a large subsurface stream which flows beneath the city. It receives much of the stormwater runoff from Bowling Green, since most of the city's runoff is directed underground. Significant pollutants in Bowling Green's stormwater runoff were identified from water quality test results of storm event grab samples, and a composite sample, of runoff entering the urban By-Pass Cave. Water quality test results were also obtained from storm event grab samples, and a composite sample, of the Lost River at the Blue Hole …

Water-Soluble Material On Aerosols Collected Within Volcanic Eruption Clouds, David B. Smith, Robert A. Zielinski, William I. Rose, B. J. Huebert

Department of Geological and Mining Engineering and Sciences Publications

In February and March of 1978, filter samplers mounted on an aircraft were used to collect the aerosol fraction of the eruption clouds from three active Guatemalan volcanoes (Fuego, Pacaya, and Santiaguito). The samples were collected on Teflon (Fluoropore) filters with a nominal pore diameter of 0.5μm. The mass of air sampled by the filters ranged from 0.15 to 6.6 kg. The particulate material collected consisted of fragments of angular silicate ash and droplets of what is interpreted as dilute H₂SO₄ and HCl. After collection of the samples, each filter was rinsed with 60 ml of distilled-deionized …

Small Particles In Plumes Of Mount St. Helens, William I. Rose, Raymond L. Chuan, D. C. Woods

Department of Geological and Mining Engineering and Sciences Publications

Particles in the size range of 0.1–25 micrometers were sampled by aircraft carrying a quartz crystal microcascade in the Mount St. Helens plume on three dates in August and September 1980. Two of the sampling dates represented ‘typical’ emissions of the volcano between plinian eruptions. One sampling flight was made 1–4 hours before the small plinian eruption of August 7, 1980, when the plume had become discontinuous and visibly darker. Size distributions were determined, and individual particles were studied by using scanning electron microscopy. The plume sampled on August 7, before the eruption, contained mainly approximately 2 micrometer diameter silicic …

Water Problems & Issues Affecting United States-Mexico Relations: Policy Options & Alternatives, Albert E. Utton

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

42 pages.

Contains 6 pages of endnotes.

The Sale, Lease Or Exchange Of Indian Water Rights For Energy Development, Thomas W. Fredericks

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

34 pages.

Contains references.

Weather Resources Management And Interbasin Transfer Law [Outline], Ray Jay Davis

New Sources of Water for Energy Development and Growth: Interbasin Transfers: A Short Course (Summer Conference, June 7-10)

21 pages (includes illustrations).