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Contribution To The Relationship Between Solar Radiation And Sunshine Duration In The Tropics: A Case Study Of Experimental Data At Ilorin, Nigeria, Sunday O. Udo

Turkish Journal of Physics

From monthly average daily values of clearness index and relative sunshine spanning a period of two years, two equations (linear and quadratic) of the Angstrom-Prescott model have been developed for the estimation of global solar irradiation at Ilorin (Lat. 8°32'N, Long. 4°34'E), a tropical location. Comparison of the regression coefficients of the linear type model showed that the values are quite consistent with those quoted in the literature for the Tropics. The predictive efficiencies of these two models are also compared with those which are believed to be applicable globally, and those developed for the Nigerian environment. Although some of …

From Sand To Sandstone: Documenting The Total Change During Diagenesis, Wilfrido Solano-Acosta

All-Inclusive List of Electronic Theses and Dissertations

The objective of this study is to provide a more comprehensive picture of sandstone diagenesis from a different perspective; starting from an analog sand serving as a precursor of a lithified sandstone.

The Role Of Environmental Analogs In Identifying Potentially Invasive Woody Plants In Iowa, Mark P. Widrlechner

Journal of the Iowa Academy of Science: JIAS

Americans cultivate a large and diverse range of introduced woody plants as important sources of food and forest products, as well as for urban horticulture, amenity and wildlife plantings, and windbreaks. A small number of these species have become serious pests, disrupting well-established native plant communities or functioning as range and agricultural weeds. More of these species are not serious pests today, but have escaped cultivation and serve as potential sources of future outbreaks. Two other sources of potentially invasive woody plants are found among species that are not or are only rarely cultivated, about which we often know little …

The Progression Of Recycling In Bowling Green, Kentucky, Susan Marklin

Masters Theses & Specialist Projects

Recycling is an important issue when dealing with solid waste. It keeps many tons of garbage out of our landfills and prolongs landfill life. Although many people in the Bowling Green area participate in the mandatory recycling program, there are still many who do not. The number of people who participate in the program has steadily grown over the past five years; however, there are still many people who need to get involved. This research argues that much effort has been put into recycling in recent years at the global, national, and local level. However, it also argues that even …

The Petrology And Geochemistry Of Volcán Huaynaputina, Southern Peru, Steven R. Schubring

All-Inclusive List of Electronic Theses and Dissertations

The 1600 eruption of Vol can Huaynaputina in Southern Peru was one of the largest historic eruptions (VEl 6). The eruption proceeded in three stages containing the same mineral assemblage of plagioclase>homblende>biotite> Fe-Ti oxides±apatite. Differences in crystal content, vesicularity, volatile content, temperature estimates, and the presence of disequilibrium textures have brought into question the petrogenesis of the 1600 eruption products. This work strives to quantify the pre- and syn-eruption magmatic conditions in order to ascertain the petrogenesis of the eruption products. Stage I was less evolved(~ 73% Si02), volatile rich (:S 5.3% H20), crystal poor (17- 26 wt. …

1998 Debris Flows Near The Yakima River, Kittitas County, Washington—Some Geomorphic Implications, Martin R. Kaatz

Geography Faculty Scholarship

The geomorphic consequences of debris flows and their asso- ciated storms have been documented in many parts of the United States. Few, if any, have been studied and documented in central Washington. The importance of recurrent debris flows in sculpting Washington landscapes has not been generally recognized compared to other processes. Arid and semi-arid regions are particularly vulnerable to debris flows triggered by sudden intense thunderstorms. Most such areas are sparsely populated and eyewitnesses are uncommon. By contrast, semi-arid central Washington is relatively well popu- lated, and there are likely to be people who have observed the storms. Such witnesses …

The State Of Eritrea Ministry Of Land, Water And Environment, Department Of Environment, Eritrea

East Africa

It is widely agreed today that anthropogenic greenhouse gas (GHG) concentrations in the atmosphere is creating imbalances in the natural cycle of the earth’s climate, best known as climate change. Scientific evidence has shown that the earth has been increasingly getting warmer and warmer. Nine of the ten warmest years, for example, have occurred since 1990. The resultant global change of climate has been of major concern to the international community and the adoption of the United Nations Framework Convention on Climate Change (UNFCCC) in 1992 at the Earth Summit held in Rio de Janeiro, Brazil, was a big step …

Solid Waste Management In Oil And Gas Pipelines Application To Asab Field, Abdulqader M Alkamali

Theses

Managing solid waste, and any other wastes in general, is an environmental need, an economical choice and a legal requirement. Preserving the environment while lowering the cost becomes a necessity when liabilities are of concern.

Solid wastes generated from oil and gas industrial activities are very diverse in their characteristics, large in their amounts and many of which are hazardous in nature. Thus, the need to manage these wastes is an obvious mandate. Oil and gas industrial activities include exploration, drilling, production, processing, refining, manufacturing and exporting. Associated with these activities, other supporting services; such as, maintenance, civil, transportation, storage, …

Regional Variations Of Kachina Iconography In Eastern Pueblo Rock Art, Dara Leigh Saville

Geography ETDs

This research addresses the problem of identifying patterns of regional variation in the kachina iconography of the Eastern Pueblo Province. Data produced in this study is also used to reevaluate the Rio Grande Hypothesis, which proposes a Jornada Mogollon origin for Pueblo kachinas. The author examines a sample of kachina images that are present in the rock art of the Rio Grande Valley and Eastern Mountain region of central New Mexico. The sample includes kachinas from the Lyden site on Black Mesa, Frijoles Canyon of Bandelier National Monument, Piedras Marcadas Canyon of Petroglyph National Monument, Cerro Indio at San Acacia, …

Application Of Morphometric Relationships To Active Flow Networks Within The Mammoth Cave Watershed, John Glennon

Masters Theses & Specialist Projects

Numerous quantitative relationships have been formulated to describe the nature of surface-drainage networks. These parameters have been used in various studies of geomorphology and surface-water hydrology, such as flood characteristics, sediment yield, and evolution of basin morphology. Little progress has been made in applying these quantitative descriptors to karst flow systems due to the lack of sufficiently complete data and inadequate technology for processing the large, complex data sets. However, as a result of four decades of investigation, an abundance of data now exists for the Mammoth Cave Watershed providing the opportunity for broader quantitative research in the organization of …

The Role Of Small And Medium Enterprises In The Economy Of Slovakia, Jaroslav Kling

Student Work

The aim of this paper is to analyze the role of small and medium enterprises in the economy of Slovakia. The changes of 1989 brought about the changes of society and economy as well. In the period of transformation of the Slovak economy, small and medium enterprises have been often considered to be a critical element of economic revival. The study answers to what extent this expectation has been met. Legal and institutional frameworks of the small and medium enterprises development are analyzed. Popular attitudes toward entrepreneurs, views and opinions of the key representatives of entrepreneurs and state representatives are …

Orbitally Induced Oscillations In The East Antarctic Ice Sheet At The Oligocene/Miocene Boundary, Tim R. Naish, Ken J. Woolfe, Peter J. Barrett, Gary S. Wilson, Cliff Atkins, Steven M. Bohaty, Christian J. Bücker, Michele Claps, Fred J. Davey, Gavin B. Dunbar, Alistair G. Dunn, Christopher R. Fielding, Fabio Florindo, Michael J. Hannah, David M. Harwood, Stuart A. Henrys, Lawrence A. Krissek, Mark Lavelle, Jaap Van Der Meer, William C. Mcintosh, Frank Niessen, Sandra Passchier, Ross D. Powell, Andrew P. Roberts, Leonardo Sagnotti, Reed P. Scherer, C. Percy Strong, Franco Talarico, Kenneth L. Verosub, Giuliana Villa, David K. Watkins, Peter-N. Webb, Thomas Wonik

Department of Earth and Atmospheric Sciences: Faculty Publications

Between 34 and 15 million years (Myr) ago, when planetary temperatures were 3-4°C warmer than at present and atmospheric CO₂ concentrations were twice as high as today, the Antarctic ice sheets may have been unstable. Oxygen isotope records from deep-sea sediment cores suggest that during this time fluctuations in global temperatures and high-latitude continental ice volumes were influenced by orbital cycles. But it has hitherto not been possible to calibrate the inferred changes in ice volume with direct evidence for oscillations of the Antarctic ice sheets. Here we present sediment data from shallow marine cores in the western Ross …

Student Fact Book, Fall 2001, Twenty-Fifth Annual Edition, Wright State University, Office Of Student Information Systems, Wright State University

Wright State University Student Fact Books

The student fact book has general demographic information on all students enrolled at Wright State University for Fall Quarter, 2001.

Earth News, V25, Fall 2001, Department Of Earth Science, University Of Northern Iowa.

Earth News

Inside this issue:

--- News from the Department Head
--- Earth Science Staff Activities
--- Earth Science Majors
--- 2001 Earth Science Graduates
--- Student Research Presentations
--- Student Internships
--- STORM: Science center for Teaching, Outreach, and Research on Meteorology
--- Studies in the Geology of Iowa for Teachers
--- Earth Science Student Assistants
--- Sigma Gamma Epsilon - Gamma Sigma Chapter
--- Gifts to the Department of Earth Science
--- 2001-2002 Scholarship and Award Recipients
--- 2001 Spring Trip Summary
--- Earth Science Seminar Series
--- Rapa Nui Expedition - March 2000
--- Alumni Profile - Larry J. …

Water Resources Review - Fall 2001 Vol 14 No 2, Annis Water Resources Institute

AWRI Reviews

No abstract provided.

Validation Of Land Surface Models Using Satellite-Derived Surface Temperature, Joshua Rhoads, Ralph Dubayah, Dennis Lettenmaier, Greg O'Donnell, Venkataraman Lakshmi

Faculty Publications

This research examines the feasibility of using remotely sensed surface temperature for validation and updating of land surface hydrologic models. Surface temperature simulated by the Variable Infiltration Capacity (VIC) hydrologie model is compared over the Arkansas-Red River basin with surface temperature retrievals from TOVS and GOES. The results show that modeled and satellite-derived surface temperatures agree well when aggregated in space or time. In particular, monthly mean temperatures agree on the pixel scale, and basin mean temperatures agree instantaneously. At the pixel scale, however, surface temperatures from both satellites were found to have higher spatial and temporal variabilities than the …

Public Reaction To Mandated Language For U.S. Drinking Water Quality Reports, Branden B. Johnson

RISK: Health, Safety & Environment (1990-2002)

The author discusses results of a survey evaluating the mandated language for United States drinking water quality reports.

Journalists' Views Of The Environment: Issues And Challenges, Bernadette West, Jane Lewis, Michael Greenberg

RISK: Health, Safety & Environment (1990-2002)

In advocating the use of an environmental handbook for journalists, the authors report on a survey of reporters and editors regarding salient environmental issues in different regions of the United States and e emphasis placed on environmental reporting in newsrooms.

C-Band Sar Backscatter Characteristics Of Arctic Sea And Land Ice During Winter, Konrad Steffen, John Heinrichs

Geosciences Faculty Publications

Synthetic Aperture Radar (SAR) data has become an important tool for studies of polar regions, due to high spatial resolution even during the polar night and under cloudy skies. We have studied the temporal variation of sea and land ice backscatter of twenty-four SAR images from the European Remote Sensing satellite (ERS-1) covering an area in Lady Ann Strait and Jones Sound, Nunavut, from January to March 1992. The presence of fast ice in Jones Sound and glaciers and ice caps on the surrounding islands provides an ideal setting for temporal backscatter studies of ice surfaces. Sample regions for eight …

Experimental Diatom Dissolution And The Quantification Of Microfossil Preservation In Sediments, D. B. Ryves, S. Juggins, Sherilyn C. Fritz, R. W. Battarbee

Department of Earth and Atmospheric Sciences: Faculty Publications

Four laboratory experiments on fresh, modern diatoms collected from lakes in the Northern Great Plains of North America were carried out to assess the effects of dissolution on diatom abundance and composition. Marked differences in mean dissolution susceptibility exist between species, despite sometimes significant intra- specific variation between heterovalves. Twenty-four taxa were ranked according to susceptibility to dissolution using an exponential decay model of valve abundance. This dissolution ranking was used to derive two weighted indices of sample preservation. A third index (F) was based on a simple binary classification of valve morphology into dissolved and pristine categories, …

Puerto Rican Karst - A Vital Resource, Ariel E. Lugo, Leopoldo Miranda Castro, Abel Vale, Tania Del Mar López, Enrique Hernández Prieto, Andrés García Martinó, Alberto R. Puente Rolón, Adrianne G. Tossas, Donald A. Mcfarlane, Tom Miller, Armando Rodríguez, Joyce Lundberg, John Thomlinson, José Colón, Johannes H. Schellekens, Olga Ramos, Eileen Helmer

WM Keck Science Faculty Papers

The limestone region of Puerto Rico covers about 27.5 percent of the island's surface and is subdivided into the northern, southern, and dispersed limestone areas. All limestone areas have karst features. The karst belt is that part of the northern limestone with the most spectacular surficial karst landforms. It covers 142,544 ha or 65 percent of the northern limestone. The karst belt is the focus of this publication, although reference is made to all limestone regions. The northern limestone contains Puerto Rico's most extensive freshwater aquifer, largest continuous expanse of mature forest, and largest coastal wetland, estuary, and underground cave …

Dye Tracing To Delineate Drainage Basins And Determine Groundwater Sensitivity, Mammoth Cave, Kentucky; With Special Reference To Potential Groundwater Contamination From Spills Along Interstate I-65, Arthur Capps

Masters Theses & Specialist Projects

The Mammoth Cave System of south central Kentucky encompasses more than 560 km of surveyed cave passages. The largest groundwater basin (244 km2) found within this cave system emerges from the Turnhole Bend Spring on the Green River. During high flow conditions, water from this groundwater basin will spill over into the Echo River section of the cave. Previous research, including cave mapping and dye tracing (Quinlan and Ray, 1989; Currens and Ray, 1998; Coons, 1994), has delineated the boundaries of spring groundwater basins for numerous springs along the Green and Barren Rivers. These data showed that 60% of the …

Trichodesmium Spp.: Numerical Studies Of Resource Competition, Carbohydrate Ballasting, And Remote-Sensing Reflectance, Tonya Denise Clayton

OES Theses and Dissertations

In recent years, a new appreciation for the role of diazotrophy in the oceans has emerged. This dissertation reports on three modeling studies designed to investigate ecological processes associated with Trichodesmium spp., the most conspicuous marine diazotroph: (1) characterization of a generalized model Trichodesmium and issues of macronutrient resource competition; (2) carbohydrate ballasting by Trchodesmium and implications for the formation of surface accumulations; and (3) the vertical distribution of Trichodesmium and implications for detection from space.

The first study focuses on issues of nitrogen and phosphorus competition and ecosystem structure. It utilizes a simple ecosystem model that includes dissolved nitrogen …

A New Approach To Understanding Canid Populations Using An Individual-Based Computer Model: Preliminary Results, William C. Pitt, Frederick F. Knowlton, Paul W. Box

United States Department of Agriculture Wildlife Services: Staff Publications

Ensuring the welfare of wild canid populations depends upon the ability to integrate species biology, the environmental aspects upon which those populations depend, and the factors controlling species abundance. Toward this end, we developed an individual-based computer model using Swarm to mimic natural coyote populations. Swarm is a software platform that allows the user to describe individual behaviors for all individuals, link those behaviors in each concurrent time step, and assemble behaviors and objects in a hierarchical framework. Our model stands apart from previous modeling efforts because it relies on field data and explicitly incorporates behavioral features, such as dominance …

Baseflow Separation Based On Storage-Outflow Modelling Of Streamflow Recessions, With Application To Semi- Arid Catchments In Tanzania, S Mwakalila

Tanzania Journal of Engineering and Technology (TJET)

Discharge in many rivers is Often fed by baseflow provided by drainage of the saturated zone in the shallow permeable soils. It is becoming clear that the outflow from this saturated zone is not linear proportional to storage as is commonly assumed in many algorithms. The objectives Of this study theretore, are first to explore the extent to which the assumption of linearity in storage-outflow relationships is valid and secondly to introduce an alternative approach to baseflow separation algorithms for estimating direct mnoff time series. Numerical analysis Of streamflow recessions from the semi-arid catchments of the Great Ruaha basin in …

Agenda: Two Decades Of Water Law And Policy Reform: A Retrospective And Agenda For The Future, University Of Colorado Boulder. Natural Resources Law Center, Hydrosphere Resource Consultants, Modrall, Sperling, Roehl, Harris & Sisk, P.A., Patrick & Stowell, P.C., Perkins Coie Llp, The William And Flora Hewlett Foundation

Two Decades of Water Law and Policy Reform: A Retrospective and Agenda for the Future (Summer Conference, June 13-15)

1 v. (various pagings) ; 29 cm

"Sponsors: Hydrosphere Resource Consultants; Modrall, Sperling, Roehl, Harris & Sisk, P.A.; Patrick & Stowell, P.C.; Perkins Coie LLP; The William and Flora Hewlett Foundation."

Conference speakers, moderators and/or panelists included University of Colorado School of Law professors Gary C. Bryner, Douglas S. Kenney, Sarah Krakoff, Kathryn Mutz, David H. Getches, Lawrence J. MacDonnell and James N. Corbridge, Jr.

Includes bibliographical references

The conference will examine the agenda for reforming and improving water law that has developed during the past two decades in the West, assesses what has (and has not) been accomplished by …

Factors And State Electric Utility Deregulation Policy Influences On Green Power Marketers, Richard Orlusky

Theses

The electric power industry has been restructuring over the last several years to allow market competition in purchasing electric power. Power generation that was traditionally provided by the local electric utility has been deregulated in order to introduce customer choice. The renewable energy sector of the power industry will have to compete with conventional fossil fuel power generators in this market. This research focused on factors and state deregulation policies that are of importance to Green Power Marketers in a retail power market. Green Power Marketers providing service in California, Pennsylvania and New Jersey retail power markets were surveyed to …

Early Public Participation And Support For A Brownfields Redevelopment Project : A Study On Perth Amboy, Leena A. Raut

Theses

Public participation is an important aspect of brownfields redevelopment. Because brownfields are a localized issue, those most affected by a site should have a say in its redevelopment. Both the process of redevelopment and the final outcome must measure the success of a brownfields project.

Perth Amboy, New Jersey, in conjunction with the Middlesex County Vocational School System, is in the process of preparing former brownfields land into a new vocational -technical high school. Residents were notified after the decision had been made, rather than be included from the start of the decision-making process. Residents within a 500-foot radius were …

The Search For A Meteorite Concentration Mechanism In The Allan Hills Icefields, Luke Probst

Honors Capstones

Capstone submitted as a graduation requirement for the BSU Honors Program.

Educating The Public About School Mathematics, Zalman Usiskin

Humanistic Mathematics Network Journal

No abstract provided.