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Articles 4051 - 4080 of 4561

Full-Text Articles in Oceanography and Atmospheric Sciences and Meteorology

Movement And Transformation Of Selected Organic Pollutants In Subsurface Environmet In Arkansas, Ali U. Shaikh Jun 1987

Movement And Transformation Of Selected Organic Pollutants In Subsurface Environmet In Arkansas, Ali U. Shaikh

Arkansas Water Resources Center Technical Reports

Several subsurface soil and groundwater samples from eastern, southern and central Arkansas were analyzed for chlorinated organic compounds commonly used as pesticides and industrial chemicals. No significant amount of these compounds were found in these samples. The adsorption/partition characteristics of some of these compounds, such as dichlorophenols, aldrin and endrin, were determined in siltloam, sandyloam and clay soils collected from the above geographical locations. Results indicate that there is considerable difference in retention capability of different types of soils with respect to different pollutants. The partition coefficient of a particular compound in a certain type of soil can be related …


Assessment Of The Effects Of Household Chemicals Upon Individual Septic Tank Performances, Mark A. Gross Jun 1987

Assessment Of The Effects Of Household Chemicals Upon Individual Septic Tank Performances, Mark A. Gross

Arkansas Water Resources Center Technical Reports

A laboratory study and a field study were performed to determine the amounts of specific household chemicals required to destroy bacteria populations in individual domestic septic tanks. The particular chemicals evaluated include liquid chlorine bleach, High Test Hypochlorite (HTH), Lysol disinfectant and Drano crystal. The laboratory study was performed to determine the approximate chemical concentrations to destroy the bacteria in the septic tank, and the field study showed the actual effect of the chemicals upon the bacteria in terms of reduction of the number of bacteria in the septic tank as well as the time required for the bacterial population …


Estimating Potential Ground And Surface Water Pollution From Land Application Of Poultry Litter, J. T. Gilmour, D. C. Wolf, P. M. Gale Jun 1987

Estimating Potential Ground And Surface Water Pollution From Land Application Of Poultry Litter, J. T. Gilmour, D. C. Wolf, P. M. Gale

Arkansas Water Resources Center Technical Reports

In 1985, more than 750 million broiler chickens were produced in Arkansas. During the same year over 15 million laying chickens produced 3.6 million eggs. The waste products of these agricultural production systems, poultry litter and manure, were about 1 million metric tons. As a result of land application of these wastes, about 5,000 metric tons of annnonium N and 12,000 metric tons of mineralized nitrogen were applied to Arkansas pastures in 1985. Manures contributed about 2-3 percent of the total. The objective of this research was to quantify major components of the nitrogen cycle which influence the ground and …


Qualitative And Quantitative Aquatic Algal Data Compilation To Determine Macrotrends- Iii, Richard L. Meyer Jun 1987

Qualitative And Quantitative Aquatic Algal Data Compilation To Determine Macrotrends- Iii, Richard L. Meyer

Arkansas Water Resources Center Technical Reports

A data base of the algae of Arkansas ecoregions has been established by the use of a relational data base management system (dBase III plus). The system was chosen to be readily available for a variety of microcomputers using MS- and PC-DOS. The data base contains taxonomic fields from division through variety, synonymy, authors, initial description, date and definitive descriptive source. The data are cross-referenced by ecoregion, Round's community and subcommunity designations. The data base contains approximately 1,500 taxonomic records in all divisions and classes of freshwater algae. The data are sortable by any of the included parameters. The data …


Chemical Properties Of Soils And Streams In Natural And Disturbed Forest Ecosystems In The Ouachita Mountains, R. S. Beasley, E. L. Miller, E. R. Lawson Jun 1987

Chemical Properties Of Soils And Streams In Natural And Disturbed Forest Ecosystems In The Ouachita Mountains, R. S. Beasley, E. L. Miller, E. R. Lawson

Arkansas Water Resources Center Technical Reports

One year of pre-harvest and five years of post-harvest water chemistry data were collected and analyzed for N03-N, TKN, TP, OP, K and Ca on nine small watersheds in the Ouachita Mountains of central Arkansas. Gross exports of all nutrients except TKN were significantly increased by cl earcutting followed by mechanical site preparation and broadcast burning of slash. Discharge-weighted nutrient concentrations were increased only for OP, K and Ca. The treatment effect was brief, lasting only one year. The first harvest of a selection system regime had no measurable effect on gross losses or concentrations of nutrients. Precipitation chemistry measurements …


Development Of A Combined Quanity And Quality Model For Optimal Groundwater Management, R. C. Peralta, J. Solaimanian, S. A. Prathapar, C. L. Griffis Jun 1987

Development Of A Combined Quanity And Quality Model For Optimal Groundwater Management, R. C. Peralta, J. Solaimanian, S. A. Prathapar, C. L. Griffis

Arkansas Water Resources Center Technical Reports

Presented is a procedure for incorporating solute transport as linear constraints within computer models for optimizing regional groundwater extraction strategies. The MODCON modelling procedure uses linear goal programming, embedded linearized equations for flow and solute transport and a MOC simulation model. Assumed is 2D flow and solute transport and a dispersed conservative contaminant. The MODCON procedure develops steady groundwater extraction strategies that will satisfy future groundwater quality constraints while simultaneously causing future piezometric heads to be as close to current heads as possible. The procedure is applied to a 160 square mile area in southeastern Arkansas.


Land Use Effects On Ground Water Quality In Carbonate Rock Terrain, Kenneth F. Steele, James C. Adamski Jun 1987

Land Use Effects On Ground Water Quality In Carbonate Rock Terrain, Kenneth F. Steele, James C. Adamski

Arkansas Water Resources Center Technical Reports

A control site with a natural setting and an experimental site with significant agriculture land use were studied in the Ozark Region of Arkansas in order to determine the effect of land use on water quality in a carbonate rock terrain. The vast majority of the two sites have the Boone Limestone exposed which combined with the underlying St. Joe is the major aquifer for drinking water in the area. The sites also are similar in terms of lineament patterns (number, length and orientation), soil, slope and vegetation. Ground water samples were collected primarily from springs during three seasons (late …


Physical Data, Anon. Jun 1987

Physical Data, Anon.

Publications (WR)

Data collected at various stations around the Lake Mead vicinity. Air temperature, lake elevation, weather, and wind velocity is recorded, as well as the depth, temperature, oxygen, conductivity, and pH. Standard.


Oil Spill Liability And Compensation: A Review Of The Existing Mechanisms And A Look At The Future, Gary A. Reiter May 1987

Oil Spill Liability And Compensation: A Review Of The Existing Mechanisms And A Look At The Future, Gary A. Reiter

Marine Affairs Theses and Major Papers

This study provides an examination of the existing United States Federal laws and international regimes regarding oil spill liability and compensation, and the manner in which they have been implemented by regulation and policy. The presentation concludes with discussion of and arguments concerning various proposed Federal comprehensive liability and compensation legislation. Emphasis is placed on the unsuccessful legislative proposals of the 99th Congress and the effects that similar legislation, if passed by the 100th congress, may have on current response policies and Federal and state governments. In particular, the effects of the proposed legislation on state's sovereignty and response operations …


Las Vegas Wash And Lake Mead Proposed Water Quality Standards: Revisions And Rationale, State Of Nevada: Division Of Environmental Protection May 1987

Las Vegas Wash And Lake Mead Proposed Water Quality Standards: Revisions And Rationale, State Of Nevada: Division Of Environmental Protection

Publications (WR)

Rationale of review and for proposed changes to the Nevada Pollution Control Regulations (NAC 445.1354, 445.1355, 445.1356, 455.1367, 445.1352, 445.1353, 445.1350, 445.1351) before the State Environmental Commission on June 23 and 24, 1987.


Comparison Of Littoral And Limnetic Zooplankton Communities Of Lake Mead, Patrick Joseph Sollberger May 1987

Comparison Of Littoral And Limnetic Zooplankton Communities Of Lake Mead, Patrick Joseph Sollberger

Publications (WR)

Microfaunal communities were studied in littoral (inshore) and limnetic (offshore) areas of the lower basin in Lake Mead to compare species composition and abundance between the two zones. Planktonic forms (zooplankton) dominated inshore and offshore habitats and the occurrence of littoral species was low. Therefore, high similarity in zooplankton species composition was found among all sampling stations. This was perhaps due to two main factors: (i) the physical and chemical environment among the stations were very similar and (ii) the lack of aquatic vegetation in the littoral zone reduced the occurrence of littoral species.

Although species composition did not vary …


Raw Nutrient Data, Leanna Gail May 1987

Raw Nutrient Data, Leanna Gail

Publications (WR)

Data collected at various stations around Lake Mead. Includes information about substances present in various water samples.


Products Tanker Shipping And Shipbuilding, Di Jin Jan 1987

Products Tanker Shipping And Shipbuilding, Di Jin

Marine Affairs Theses and Major Papers

First the entire products tanker market system, including the petroleum products market, products tanker shipping market and the products tanker shipbuilding market, is introduced. The relationship among principal elements is discussed. General information about petroleum products and products tankers is described. Then, the world petroleum products market and products tanker shipping market are examined referring to 1985 Drewry report. Finally, the analysis of products tanker shipbuilding market is made by analyzing the statistics of the products tankers ordered between 1980 and 1986 according to Fairplay orderbook. Major aspects, such as flag, owner, shipbuilder, vessel tonnage, dimensions, speed and engine, are …


Study Of The Ocean Transportation Of Chemicals, Joseph A. Meyertholen Jan 1987

Study Of The Ocean Transportation Of Chemicals, Joseph A. Meyertholen

Marine Affairs Theses and Major Papers

The growth of the chemical industry over the past 30 years has contributed significantly to the increased volume of hazardous cargo transported by ocean vessel. The properties of some chemicals in commerce, particularly intermediate products, are such that their movement represents a risk to society in terms of environmental damage, bodily injury, and carcinogenic effects that may not surface for years. This study traces the development of the ocean chemical transportation system with emphasis on the technology, management and regulatory regime that has evolved to control these risks. Selected incidents involving hazardous chemical cargoes are reviewed, highlighting the industry and …


Balancing Conservation And Development In Maryland's Coastal Zone: A Program Evaluation, James G. Turek Jan 1987

Balancing Conservation And Development In Maryland's Coastal Zone: A Program Evaluation, James G. Turek

Marine Affairs Theses and Major Papers

An evaluation of a federal regulatory program administered by the Baltimore District Corps of Engineers (COE), governing certain development activities in Maryland's coastal zone, was conducted to (1) identify cumulative development and wetland impact outcomes that occurred over a 5-year (1981-1985) period; and (2) assess a component of the decision-making process that resulted in these outcomes. This study focuses specifically on program coordination between the COE and the National Marine Fisheries Service (NMFS) to evaluate how the process has been affected by (1) programmatic changes resultant of the Reagan Administration's regulatory reform; and (2) societal demands as indicated by changes …


Maritime Boundaries Between Trinidad And Tobago/Venezuela/Barbados And Grenada - Its Impact On Offshore Oil, Patty Marajh Jan 1987

Maritime Boundaries Between Trinidad And Tobago/Venezuela/Barbados And Grenada - Its Impact On Offshore Oil, Patty Marajh

Marine Affairs Theses and Major Papers

The future of the economy of Trinidad and Tobago is heavily dependent upon the exploitation of the hydrocarbon resources in its continental shelf. Trinidad's geographical proximity to the Venezuelan mainland is relevant because both states share the same continental shelf in areas not delimited by the 1942 gulf of Paria Treaty. The continental shelves of Barbados and Grenada also intersect and these areas have not been delimited and defined by any agreement. The current expansion of the exploration and exploitation of crude oil and natural gas have raised several problems within recent years. This thesis will focus attention to the …


Alternative Federal Outer Continental Shelf Oil And Gas Leasing Procedures: Lessons From Programs In Alabama And Texas, Christopher Watson Lynch Jan 1987

Alternative Federal Outer Continental Shelf Oil And Gas Leasing Procedures: Lessons From Programs In Alabama And Texas, Christopher Watson Lynch

Marine Affairs Theses and Major Papers

This study is a comparative analysis of the offshore oil and gas leasing programs of Alabama, Texas, and the Federal government. It focuses upon the legal and political, rather than resource, technological, or economic problems that have left the Federal program with a record of unmet expectations and growing frustration. The long history of turmoil that has embroiled the Federal leasing program since the 1969 Santa Barbara oil spill and Arab oil crises is reviewed. The leasing and regulatory programs of Alabama, Texas, and the Federal government are outlined. Alternatives to current Federal procedures, reflecting State practices, are considered, including …


The Exclusive Economic Zone-Considerations For Management With Special Reference To Developing Nations, John G. Catena Jan 1987

The Exclusive Economic Zone-Considerations For Management With Special Reference To Developing Nations, John G. Catena

Marine Affairs Theses and Major Papers

Having successfully initiated and developed the legal aspects of the Exclusive Economic Zone (EEZ) the challenge which now arises for the developing coastal nations is to implement an ocean management system to more fully realize the potential benefits of extended jurisdiction. This study discusses the needs and problems developing nations may encounter in developing such a management system and also considers the ways and means to meet these needs and overcome these problems. The study suggests that coastal nations should adopt an integrated three phased ocean policy process consisting of a (1) priority establishment phase (policy formulation) (2) strategic phase …


Licensing Of The U. S. Maritime Personnel: The International Impacts, Warren G. Schneeweis Jan 1987

Licensing Of The U. S. Maritime Personnel: The International Impacts, Warren G. Schneeweis

Marine Affairs Theses and Major Papers

This paper examines the international and Federal efforts to enhance safety at sea and the protection of the marine environment through the development of standards to improve the training and strengthen the professional qualifications of seafarers. Special regard is made to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978, signed by the United States in 1979, and to the proposed amendments to the Federal regulations for licensing U. S. maritime personnel which will bring the U. S. licensing scheme in general conformance with that Convention. This research should lessen resistance to U. S. ratification of …


Importance Of Predation By Adult Trout On Mortality Rates Of Fingerling Rainbow Trout Stocked In East Canyon Reservoir, Utah, Wayne A. Wurtsbaugh Jan 1987

Importance Of Predation By Adult Trout On Mortality Rates Of Fingerling Rainbow Trout Stocked In East Canyon Reservoir, Utah, Wayne A. Wurtsbaugh

Watershed Sciences Faculty Publications

Personnel from Utah State University, working in cooperation with the Utah Division of Wildlife Resources and the Utah Cooperative Fish and Wildlife Research Unit, are attempting to determine various sources of mortality of fingerling rainbow trout (Salmo gairdneri) stocked into mid-elevation reservoirs in the State. Returns of planted fish are often much below desired levels. Angler surveys indicate that in East Canyon Reservoir, fishermen harvest only about 30% of the fingerling trout stocked, and this is a much higher return than in many other waters.


Microhabitat Selection And Diel Movements Of Juvenile Rainbow Trout (Salmo Gairdneri) Introduced Into Mid-Elevation Reservoirs In Utah, Wayne A. Wurtsbaugh, Roger Tabor Jan 1987

Microhabitat Selection And Diel Movements Of Juvenile Rainbow Trout (Salmo Gairdneri) Introduced Into Mid-Elevation Reservoirs In Utah, Wayne A. Wurtsbaugh, Roger Tabor

Watershed Sciences Faculty Publications

The distribution and movement patterns of fingerling rainbow trout stocked into reservoirs in Utah were investigated with · SCUBA observations and by vertical gill netting. For several weeks after stocking, fingerling trout (ca. 80 mm standard length) were strongly oriented to the shore, and selected habitats providing cover. During the underwater observations, no fish were seen below depths of 2 meters. Two weeks after stocking, the fingerlings were most abundant under docks near where they were planted, indicating that dispersal was relatively slow. Jacob's electivity indices for natural substrates in water 0-1.5 meter deep were in sand, gravel, cobble, boulders …


Acceleration Of Nutrient Uptake By Phytoplankton In A Coastal Upwelling Ecosystem: A Modeling Analysis, Richard C. Zimmerman, James N. Kremer, Richard C. Dugdale Jan 1987

Acceleration Of Nutrient Uptake By Phytoplankton In A Coastal Upwelling Ecosystem: A Modeling Analysis, Richard C. Zimmerman, James N. Kremer, Richard C. Dugdale

OES Faculty Publications

Studies of upwelling centers in the eastern Pacific suggest that maximum rates of nitrate uptake (light and nutrient saturated) increase, or shift-up, as newly upwelled water moves downstream. The rate of shift-up appears to be related to irradiance and the ambient concentration of limiting nutrient at the time of upwelling. A mathematical model was developed to evaluate effects of irradiance and initial nitrate concentration on temporal patterns of shift-up and subsequent time scales of nutrient utilization over a range of simulated upwelling conditions. When rates consistent with field studies were used, complete shift-up was possible only under certain conditions, and …


Genesis Of Marine Terrace Soils, Barbados, West Indies: Evidence From Mineralogy And Geochemistry, Daniel R. Muhs, Russell C. Crittenden, John N. Rosholt, Charles A. Bush, Kathleen C. Stewart Jan 1987

Genesis Of Marine Terrace Soils, Barbados, West Indies: Evidence From Mineralogy And Geochemistry, Daniel R. Muhs, Russell C. Crittenden, John N. Rosholt, Charles A. Bush, Kathleen C. Stewart

United States Geological Survey: Staff Publications

Well-developed, clay-rich soils dominated by interstratified kaolinite-smectite are found on the uplifted coral reef terraces on the island of Barbados. The reef limestone is unlikely to have been the soil parent material however, because it is 98 per cent CaCO, and geomorphic evidence argues against the 20 m of reef solution required to produce the soils by this process. The mineralogy of the sand, silt, and clay fractions of the soils, and trace element geochemistry, suggest that aeolian materials carried on the trade winds from Africa, volcanic ash from the island of St. Vincent, and quartz from Tertiary bedrock on …


Optimal Groundwater Mining Methods, Richard C. Peralta, Krzysztof G. Kowalski Dec 1986

Optimal Groundwater Mining Methods, Richard C. Peralta, Krzysztof G. Kowalski

Arkansas Water Resources Center Technical Reports

No abstract provided.


Cliff-Height And Slope-Angle Relationships In A Chronosequence Of Quaternary Marine Terraces, San Clemente Island, California, Russell Crittenden, Daniel R. Muhs Sep 1986

Cliff-Height And Slope-Angle Relationships In A Chronosequence Of Quaternary Marine Terraces, San Clemente Island, California, Russell Crittenden, Daniel R. Muhs

United States Geological Survey: Staff Publications

Zusammenfassung. Eine Abfolge quartarer Strandterrassen auf ~an Clemente Island, Kalifornien, liefert einen Rahmen fur die quantitative Analyse der Anderungen an vom Meer verlassenen Kustenkliffen als Funktion der Zeit. Es wurde eine Abschatzung der Anwendbarkeit von BUCKNAM & ANDERSON (1979) log-lin~arer Beziehung zwischen Wandhohe und Hangwinkel durchgefuhrt, indem Brandungskliffhohe und maximale Hangwinkel verwendet wurden. Die Ergebnisse zeigen eine regelhafte Zunahme des Hangwinkels mit dem Logarithmus der Kliffhohe, und Kliffe einer bestimmten Hohe zeigen m,it der Zeit eine Abnahmedes maximalen Hangwinkels. 1m ganzen waren die Relationen schwacher als fur FluBterrassen und Bruchstufen in unverfestigten Materialen, aber die Methode kann wahrscheinlich verwendet werden, …


Long-Term Effects Of Tillage On The Retention And Transport Of Soil Water, H. D. Scott, L. S. Wood, W. M. Miley Jun 1986

Long-Term Effects Of Tillage On The Retention And Transport Of Soil Water, H. D. Scott, L. S. Wood, W. M. Miley

Arkansas Water Resources Center Technical Reports

Quantitative measurements were made of the physical and chemical properties of two virgin prairie soils, Crowley and Jay, that remain in their native Arkansas environments and of similar soils that had been tilled extensively. Comparisons were made of soil properties at several depths. When compared with the tilled soils the virgin soils had higher organic matter contents, saturated hydraulic conductivities and water retained at several applied pressures. Bulk densities and hydraulic resistances were lower in the virgin soils. For the Crowley silt loam, values of pH and elemental contents of the virgin soil were higher than those of the tilled …


Algal Growth Potentials And Heavy Metal Concentrations Of The Primary Streams To Upper Beaver Lake, Richard L. Meyer, W. Reed Green, Kenneth F. Steele, Diana Wickliff Jun 1986

Algal Growth Potentials And Heavy Metal Concentrations Of The Primary Streams To Upper Beaver Lake, Richard L. Meyer, W. Reed Green, Kenneth F. Steele, Diana Wickliff

Arkansas Water Resources Center Technical Reports

Meyer and Green (1984) demonstrated the probable inhibition of algal growth potential by heavy metals in upper Beaver Lake. Upper Beaver Lake receives water from three tributaries. One contains a small reservoir and the combined streams receive sewage input. Collections were made approximately monthly at eight sites for the Algal Assay Bottle Test (AABT) and heavy metal analysis. In general, AABT results indicated that the collections above the sewage lnput were phosphorus limited while those below were nitrogen or combined nitrogen and phosphorus limited. Growth inhibition occurred during summer and early fall at various sites with greater inhibition at the …


Local Water Resource Information Management System, David G. Parker, Sandra C. Parker Jun 1986

Local Water Resource Information Management System, David G. Parker, Sandra C. Parker

Arkansas Water Resources Center Technical Reports

A Beaver Lake water quality database has been designed as a relational database. It has been implemented using software called R:base 5000, a system available for microcomputers using MS- or PC- DOS operating systems. The data in the database include that concerned with the author(s), title, date of publication, agency doing the study, agency funding the study and complete reference for the document. Other aspects of the database are designed to allow retrievals based on any author, study dates, parameters measured and keywords.


The Behavior Of Soluble Salt In Sharkey Clay- Ii, J. T. Gilmour, R. E. Baser, H. D. Scott, J. A. Ferguson Jun 1986

The Behavior Of Soluble Salt In Sharkey Clay- Ii, J. T. Gilmour, R. E. Baser, H. D. Scott, J. A. Ferguson

Arkansas Water Resources Center Technical Reports

Soluble salts have been shown to accumulate in Arkansas soils in sufficient quantities to impair crop plant growth. The major objective of this study was to describe the behavior of soluble chloride salt over long time periods in Sharkey clay - a major Mississippi Delta soil. Prior to flooding rice, leaching of chloride in response to rainfall was observed. The inclusion of a sandy subsoil layer reduced this effect presumably by limiting downward movement of water under unsaturated conditions. No lateral movement of the chloride salt was found during the period prior to flooding. Removal of soluble chloride salts from …


Qualitative And Quantitative Aquatic Algal Data Compilation To Determine Macrotrends- Ii, Richard L. Meyer Jun 1986

Qualitative And Quantitative Aquatic Algal Data Compilation To Determine Macrotrends- Ii, Richard L. Meyer

Arkansas Water Resources Center Technical Reports

A database of the algae of Arkansas has been established by the use of a relational database management system (dBase III). The system was chosen to be readily available for microcomputers using MS and PC-DOS. The database contains taxonomic fields from division through variety, synonomy, authors, starting date and definitive descriptive source. The data is cross-referenced by ecoregion, community and subcommunity. The database contains nearly 1,500 taxonomic records in all division and classes of freshwater algae. These data are sortable by any of the included parameters. The data have been used to initiate the publication of the algal flora of …