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Investigation Of The Relationship Of Earthquakes And Underground Waste Disposal In The El Dorado Area, Arkansas, Randel Cox, Roy B. Vanarsdale

Arkansas Water Resources Center Technical Reports

From December, 1983 to September, 1989 twelve small earthquakes were recorded for the El Dorado, Arkansas area. Magnitudes of these earthquakes were well below damaging levels. Prior to this time no seismicity was reported in the area, suggesting that the earthquakes were not naturally occurring and may have been the result of human activity. El Dorado is located at the margin of a region of underground waste brine disposal and along a major fault zone. Elevated pore pressures resulting from brine disposal may have reduced the normal (locking) stresses across fault surfaces and triggered fault movement. Two injection wells (Great …

The Role Of Inositol Phosphate Cascade In Visual Excitation Of Invertebrate Microvillar Photoreceptors, Tamara M. Frank, A. Fein

Marine & Environmental Sciences Faculty Articles

The identity of the transmitter(s) involved in visual transduction in invertebrate microvillar photoreceptors remains unresolved. In this study, the role of inositol 1,4,5-trisphosphate (IP₃) was examined in Limulus ventral photoreceptors by studying the effects on the light response of heparin and neomycin, agents that inhibit the production or action of IP₃. Both heparin and neomycin reduce responses to brief flashes of light and the transient component of responses to steps of light, and also inhibit IP₃-induced calcium release, indicating that IP₃ plays a direct role in invertebrate visual excitation. The effects of BAPTA, …

Analytical Modeling And Simulation For Investigation Of A Digital Gas Filter Correlation Radiometer, Catherine P. Mcgowan

Electrical & Computer Engineering Theses & Dissertations

This thesis investigates a digital gas filter correlation radiometer called the Tropospheric Radiometer for Atmospheric Chemistry and Environmental Research (TRACER), which will be used to remotely measure carbon monoxide at three levels in the troposphere. The nadir-viewing radiometer measures the differential absorption of radiation through the atmosphere at 4.67@m and 2.33pm wavelengths. This thesis develops an analytical model of the TRACER measurement process to evaluate the effect of varying certain system parameters on the measurement. The independent sampling criterion and the response of linear systems to random signals are explained. A parametric simulation model is also developed to evaluate the …

Modifications To Mcnp, Version 3b: Incorporating A Variable Density Atmosphere. Addendum, David L. Monti, Kirk A. Mathews

AFIT Documents

MCNP version 3B was modified to incorporate a continuously variable density atmosphere. This was accomplished by representing the variation of air density as a function of altitude with a series of continuous piecewise exponential curves up to a maximum altitude of 1000 km. User-written subroutines and functions were written which incorporated these piecewise functions. These subroutines and functions were subsequently incorporated into a production version of MCNP. Several MCNP subroutines and files were modified in support of these modifications. This report discusses detailed information regarding the theoretical development of the variable density model, the user written subroutines and functions, the …

Final Report: Biological Monitoring Of The John U. Lloyd Beach Renourishment: 1989, Richard E. Dodge, Steven C. Hess, Charles Messing

Marine & Environmental Sciences Faculty Reports

In 1987, Nova University (Contractor) with ERM South (Subcontractor) was awarded a contract to provide biological monitoring services for the John U Lloyd State Recreation Area Beach Renourishment Project. A notice to proceed for the initial biological monitoring (Phase I - Preconstruction) was issued in February, 1989. Phase I preconstruction field monitoring took place in February and March, 1989. Phase II post-construction field work took place in August and Spetember, 1989. Phase III post-construction field monitoring took place in August, 1990. Laboratory work occurred from March, 1989 to January, 1991. Renourishment dredging took place from May 16, 1989 to July …

Grape Density Records And Density Cyclicity, Eystein Jansen, Larry A. Mayer, Shipboard Scientific Party

Affiliate Scholarship

No abstract provided.

Ontong Java Plateau, Leg 130: Synopsis Of Major Drilling Results, W. H. Berger, Loren W. Kroenke, Larry A. Mayer, Shipboard Scientific Party

Affiliate Scholarship

Sixteen holes were drilled at five sites on the northeastern flank of Ontong Java Plateau during Leg 130 (Sites 803 through 807). All of these sites are near the equator, but are at different depths (803: 02°26.0'N, 3410 m; 804: 01°00.3'N, 3861 m; 805: 01°13.7'N, 3188 m; 806: 00°19.1'N, 2520 m; and 807: 03°36.4'N, 2805 m). One of our goals was to obtain a depth transect of Neogene carbonate deposition for reconstructing the history of ocean climate, chemistry, and productivity, and for understanding the origin of acoustic reflectors. Another goal was to achieve considerable penetration into basement for elucidating the …

Wombalano Yerang, New Genus And Species Of Corophioid (Crustacea, Amphipoda) From The Great Barrier Reef, Australia, James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

Wombalano is characterized by having a interlocked basket of large spines on the bases of male gnathopod 2; these bases arc curved inward to afford the interlocking capability.

This genus differs from Lemboides Stebbing in the even more shortened inner ramus of uropod 3, in the simple mandibular palp, the fused articles of the flagellum on antenna 2, and the immense basket-shovel formed of spines on articl 2 of male gnathopod 2.

High-Resolution, Whole-Core Magnetic Susceptibility Data From Leg 130, Ontong Java Plateau, John A. Tarduno, Larry A. Mayer, Robert Musgrave

Affiliate Scholarship

High-resolution, whole-core magnetic susceptibility data, recorded at 3-cm intervals, were obtained for advanced hydraulic piston (APC) cores at Sites 805, 806, and 807 of Leg 130 on the Ontong Java Plateau. In this initial report, we present a preliminary evaluation of these data for their use in core correlations and paleoclimatic studies. The data allow detailed intrasite correlations between the offset APC cores and provide a means for intersite correlations of Pleistocene sediments. Variations in magnetic susceptibility values probably mirror variations in terrestrial influx and may act as proxy indicators of climate. Highly coherent cyclicity, representing Milankovitch orbital frequencies, is …

Ua66/8/2 Climate Of Bowling Green, Kentucky, Wku Kentucky Climate Center, Glen Conner, John Ternent

WKU Administration Documents

Climatological summary of weather and temperatures for Bowling Green, Kentucky between 1961 and 1990.

Ua35/11 Student Honors Research Bulletin, Wku Honors Program

WKU Administration Documents

The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.

• Alkolibi, Fahad. Bowling Green Urban Heat Island
• Chattin, John. John Grimes' Abandoning of Religion in James Baldwin's Go Tell It on the Mountain
• Clark, Michelle. Abortion and the Moral Status of the Fetus
• Garrett, Kristy. The Making of a Serial Killer
• Lilley, Elizabeth. Is Environmental Recovery Possible in Prince William Sound Following the Alaskan Oil Spill?
• McMurtry, Brian. Biblical Imagery and Symbols in El Arbol De Oro
• Metzger, Kim. The Rise and Fall …

Performance Of Annual Legumes And Their Mixes Under Different Crop:Pasture Rotation., P. Evans

Experimental Summaries - Plant Research

Trial 86KA64, 86KA65 and 86KA66

Performance of annual legumes and their mixtures under different crop:pasture rotations.

Seed reserves, especially in the 1:1 rotation treatment, are on average below 100 kg/ha and in many cases below 50 kg/ha for all three soil types. Because of this the 1991 season will be used to fertilize, control weeds, and apply a grazing management system to favour legume production and seed set. No crop will be sown in 1991.

Sub clover flowering, sequential sowings.

Location: Katanning

To provide seven different temperature and photoperiod regimes, eight cultivars of sub clover ranging in maturity from Nungarin …

Photis Trapherus, A New Elephantine Species From The Caribbean Sea (Crustacea: Amphipoda), James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

Photis trapherus differs from its Californian counterpart, P. elephantis, in characters of male pereopod 6: the smallness of the posteroventral tooth on article 2, the longer article 4 with separated posterior keel and no significant posteroventrallobe, the relatively thinner article 2; the lack of distal expansion on article 4 of pereopod 7; the distinct concavity and defining tooth on the palms of gnathopods 1-2.

Preconstruction Report: Biological Monitoring Of The Hollywood-Hallandale Beach Renourishment: 1991, Richard E. Dodge, Walter Goldberg, Steven C. Hess, Charles Messing

Marine & Environmental Sciences Faculty Reports

In 1990, Nova University (Contractor) with Coral Reef Associates and ERM South (Subcontractors) was awarded a contract to provide biological monitoring services for the Hollywood Hallandale Beach Renourishment Project. A notice to proceed for the initial biological monitoring (Preconstruction) was issued in August, 1990. Preconstruction field monitoring took place in October, 1990. Laboratory work was begun at the start of 1991 following the analysis of samples from the previous John U. Lloyd beach renourishment monitoring. Renourishment dredging is tentatively scheduled to take place starting in April or May, 1991. Sediment is scheduled to be removed and subsequently placed on the …

Two New Species Of Netamelita From The Caribbean Sea (Crustacea: Amphipoda: Gammaridea), James Darwin Thomas, J. L. Barnard

Marine & Environmental Sciences Faculty Articles

The previously described species of Netamelita from California and the Gulf of Mexico are reviewed and two new species, N. brocha and N. tabaci, are described from the Florida Keys and Belize, respectively. A key to the species of Netamelita is provided. In the Caribbean Sea these species live on fine coralgal muds in forereef environments at depths of 30-40 m in a distinctive amphipod assemblage dominated by the genera Garosyrrhoe and Metaceradocus. The two new species of Netamelita were observed to plough through fine surficial flocculent materials, head downward, with urosomal appendages elevated above the sediment surface.

Potential Impacts Of Biomass Production In The United States On Biological Diversity, James H. Cook, Jan Beyea, Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Biomass could be a renewable source of energy and chemicals that would not add CO₂ to the atmosphere. It will become economically competitive as its cost decreases relative to energy costs, and biotechnology is expected to accelerate this trend by increasing biomass productivity. Pressure to slow global warming may also make biomass more attractive. Substantial dependence on biomass would entail massive changes in land use, risking serious reductions in biodiversity through destruction of habitat for native species. Forests could be managed and harvested more intensively, and virtually all arable land unsuitable for high-value agriculture or silviculture might be used …

Littoral And Limnetic Zooplankton Communities In Lake Mead, Nevada-Arizona, Usa, Patrick J. Sollberger, Larry J. Paulson

Publications (WR)

Zooplankton were collected from adjacent littoral and limnetic sites in Lake Mead, Nevada-Arizona, USA. Limnetic species dominated both littoral and limnetic zooplankton communities; littoral species rarely exceeded 2% of monthly total zooplankton densities. Low species richness of littoral taxa and high similarity in species composition between littoral and limnetic habitats appeared to result from uniform horizontal physical and chemical environments, due to horizontal mixing, and from the absence aquatic macrophytes. Significant differences in spatial distribution occurred in phytoplankton biomass, total zooplankton density, and fish "abundances; highest concentrations of these factors occurred nearest an inflow high in nutrients and progressively declined …

The Diet And Feeding Habits Of The Southern Stingray, Dasyatis Americana, In Tropical Shallow Marine Habitats, David S. Gilliam

HCNSO Student Theses and Dissertations

The diet and feeding habits of the southern stingray, Dasyatis americana, were investigated through aerial surveys, land-based observations, and quantitative analysis of stomach contents. The field research was conducted in the Exuma Cays Land and Sea Park, central Bahamas. Systematic aerial surveys and the land-based observations were made to determine population density and feeding periodicity in terms of time or tidal phase. In August, 1989, systematic surveys were flown over two cays in the Park; a 12 km² area around Waderick Wells Cay and a 21km² area around Shroud Cay. Both survey areas were flown three times …

Winter 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Spring 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Summer 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Fall 1991, Nsu Oceanographic Center

Currents

No abstract provided.

Florida's Water Resources, Armalee Feegan B.A., David Wallace

Environmental Education Resources

Edited by Joan Bray and Teri Rosen. Northeast Florida Institute for Science, Mathematics and Computer Education.

This booklet is an overview of Florida's water resources such as groundwater, aquifers, rivers, springs, and other bodies of water. It also discusses management, problems with pollution, and water conservation.

Barrier Islands, Felicia West Ed.D., David Wallace

Environmental Education Resources

Edited by Joan Bray and Teri Rosen.

This booklet is an overview on the formation, structure, and role that barrier islands, dunes, barrier flats, and salt marshes play in the environment and water ecosystems. In addition, it explains the need to protect them and conserve these features.

Observations Of The Phytoplankton Standing Crop At The Shelf Margin Of The Mid Atlantic Bight, Bruce B. Wagoner, Harold G. Marshall

Biological Sciences Faculty Publications

A comparison of the total percentage cell abundance and cell biovolume relationships of major phytoplankton categories was made between two station sets across the shelf margin. Diatom values for abundance and biovolume were greater at oceanic stations compared to the outer shelf stations, with dinoflagellates having the reverse pattern. The composite contributions to biovolume and abundance in the standing crop from other phytoplankton categories were greater over the outer shelf than beyond the shelf margin. The major source of biovolume (biomass) from the outer shelf and these oceanic stations came from the diatoms and dinoflagellates, with an average mean of …

Observations Of A Cyclonic Ring: Gulf Stream Coalescence Event Over The Blake Plateau, Julie Mcclean-Padman, Larry P. Atkinson

CCPO Publications

Hydrographic data collected in September 1980 over the Blake Plateau were analyzed using a combination of empirical search and inverse techniques. Five sections, extending from the continental shelf break eastward across the Blake Plateau, were positioned at approximately 1-degrees intervals between 28-degrees and 32-degrees-N. The empirical search procedure was applied to four closed regions (boxes), constructed from adjacent sections, where each region was assumed to consist of two conservative layers. Five geostrophic velocity sections were obtained using the average optimum reference level for the four boxes. The inverse technique provided barotropic correction velocities that caused all layers to conserve mass. …

Lingin Derived Organic Matter In Georgia Coastal Waters, Mary Ann Moran, Lawrence R. Pomeroy, Edward S. Sheppard, Larry P. Atkinson

CCPO Publications

The importance of riverine- and saltmarsh-derived organic matter to the food web of Georgia coastal waters has been a focus of ecological research over the past thirty years. Studies based on energy budgets, carbon flux measurements, and stable isotope ratios have generally implicated marsh detritus as an important, although not always dominant, source of organic matter within the marshes and adjacent estuaries (Teal 1962, Odum and de la Cruz 1967, Haines 1977, Peterson and Howarth 1987). However, data on the contribution of exported marsh and riverine organic matter to productivity futher offshore, in continental shelf waters off the coast of …

Hydrogen Sulfide And Radon In And Over The Western North Atlantic Ocean, T. W. Andreae, Gregory A. Cutter, N. Hussain, J. Radford-Knoery, M. O. Andreae

OES Faculty Publications

Atmospheric measurements of radon and hydrogen sulfide, and seawater measurements of total sulfide, free sulfide, and carbonyl sulfide, were made on a cruise in the western North Atlantic Ocean (October 24 to November 9, 1989). Measured values for ²²²Rn ranged from 3 to 70 pCi m⁻³, those for atmospheric hydrogen sulfide from 1 to 85 parts per trillion, and those for dissolved total and free sulfide in seawater from 33 to 930 pmol L⁻¹ and 0 to 73 pmol L⁻¹, respectively. A positive correlation between ²²²Rn and atmospheric H₂S was observed. …

Reservoir Sedimentation Studies, D C. Boudurant, R H. Livesey

United States Army Corps of Engineers, Omaha District

It must be recognized that, when a reservoir is constructed on a stream, all or most of the sediment transported into the reservoir by the stream will be deposited there. With few exceptions, there is no practical method for reducing or eliminating the sediment inflow; thus it is necessary to anticipate and to provide for resulting problems. The major problem is, of course, the accumulative loss of storage capacity. Other items of importance include the distribution of the sediment with respect to various storage increments, the effect on the chemical or physical quality of the water, ecological effects, and the …

Seasonal Phytoplankton Assemblages Associated With The Chesapeake Bay Plume, Harold G. Marshall

Biological Sciences Faculty Publications

Waters associated with the Chesapeake Bay plume were highly variable, unstable, and subject to the influence of flow patterns into and out of the Bay. Seasonal phytoplankton assemblages were identified for this region, with the phytoplankton development similar to the seasonal spring-fall growth maxima over the shelf, yet influenced by the multi-pulsed patterns often noted in the lower Bay. Major dominants included species common to both the shelf and lower Chesapeake Bay.