Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1081 - 1110 of 2102

Full-Text Articles in Entire DC Network

Gardner V. Board Of County Commissioners Of Wasatch County : Brief Of Appellant, Utah Court Of Appeals Jan 2005

Gardner V. Board Of County Commissioners Of Wasatch County : Brief Of Appellant, Utah Court Of Appeals

Utah Court of Appeals Briefs (1996–2006)

BRIEF OF THE APPELLANTS APPEAL FROM THE FINAL ORDERS OF THE FOURTH DISTRICT COURT, UTAH COUNTY, JUDGES JAMES R. TAYLOR & ANTHONY W. SCHOFIELD


Ground Penetrating Radar Response To Thin Layers: Examples From Waites Island, South Carolina, Swagata Guha Jan 2005

Ground Penetrating Radar Response To Thin Layers: Examples From Waites Island, South Carolina, Swagata Guha

USF Tampa Graduate Theses and Dissertations

Thin layers (layers that are not resolvable in terms of GPR wavelengths) are very common in sedimentary deposits. To better understand ground penetrating radar (GPR) wave behavior in sequences of thin layers with contrasting electromagnetic parameters, 1D FDTD simulations are run for simple layer distributions. Laminated (mm-scale) sequences can produce reflected energy with 10-20% of the amplitude of reflections from equivalent isolated contacts. Amplitude spectra from laminae packages are shifted toward higher frequencies. Such spectral shifts in radar profiles may potentially be used as indicators of fine-scale laminations. A comparative study of GPR records and models generated from core data …


Mapping, Habitat Characterization, And Fish Surveys Of The Deep-Water Oculina Coral Reef Marine Protected Area: A Review Of Historical And Current Research., John K. Reed, Andrew N. Shepard, Christopher C. Koenig, Kathryn M. Scanlon, R. G. Gilmore Jan 2005

Mapping, Habitat Characterization, And Fish Surveys Of The Deep-Water Oculina Coral Reef Marine Protected Area: A Review Of Historical And Current Research., John K. Reed, Andrew N. Shepard, Christopher C. Koenig, Kathryn M. Scanlon, R. G. Gilmore

Faculty Scholarship

Deep-water Oculina coral reefs, which are similar in structure and development to deep-water Lophelia reefs, stretch 167 km (90 nm) at depths of 60-100 m along the eastern Florida shelf of the United States. These consist of numerous pinnacles and ridges, 3-35 m in height, that are capped with thickets of living and dead coral, Oculina varicosa. Extensive areas of dead Oculina rubble are due in part to human impacts (e.g., fish and shrimp trawling, scallop dredging, anchoring, bottom longlines, and depth charges) but also may be due in part to natural processes such as bioerosion, disease, or global warming.


Oil & Gas Law - Royalty Dethroned: Wyoming's Approach To Gathering Costs, Rickey Turner Jan 2005

Oil & Gas Law - Royalty Dethroned: Wyoming's Approach To Gathering Costs, Rickey Turner

Wyoming Law Review

No abstract provided.


Integrating Visible, Near Infrared And Short Wave Infrared Hyperspectral And Multispectral Thermal Imagery For Geological Mapping At Cuprite, Nevada, Xianfeng Chen Jan 2005

Integrating Visible, Near Infrared And Short Wave Infrared Hyperspectral And Multispectral Thermal Imagery For Geological Mapping At Cuprite, Nevada, Xianfeng Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Visible, near infrared (VNIR), and short wave infrared (SWIR) hyperspectral and thermal infrared (TIR) multispectral remote sensing have become potential tool for geological mapping. In this dissertation, a series of studies were carried out to investigate the potential impact of combining VNIR/SWIR hyperspectral and TIR multispectral data for surface geological mapping. First, a series of simulated data sets based on the characteristics of hyperspectral AVIRIS and multispectral TIR MASTER sensors was created from surface reflectance and emissivity library spectra. Five common used classification methods including minimum distance, maximum likelihood, spectral angle mapper (SAM), spectral feature fitting (SFF), and binary encoding …


New Stratigraphic Subdivision, Depositional Environment, And Age Estimate For The Upper Cretaceous Djadokhta Formation, Southern Ulan Nur Basin, Mongolia, Demberelyin Dashzeveg, Lowell Dingus, David B. Loope, Carl C. Swisher Iii, Togtokh Dulam, Mark R. Sweeney Jan 2005

New Stratigraphic Subdivision, Depositional Environment, And Age Estimate For The Upper Cretaceous Djadokhta Formation, Southern Ulan Nur Basin, Mongolia, Demberelyin Dashzeveg, Lowell Dingus, David B. Loope, Carl C. Swisher Iii, Togtokh Dulam, Mark R. Sweeney

Department of Earth and Atmospheric Sciences: Faculty Publications

Studies of key and newly discovered sections of the Upper Cretaceous Djadokhta Formation along the southern margin of the Ulan Nur Basin allow a new subdivision based on lithology. The formation and its members were mapped at both Bayn Dzak, an area that includes the Flaming Cliffs, and Tugrugyin Shireh, an area about 50 km to the northwest of Bayn Dzak. Stratigraphic sections at both localities were remeasured. The considerably enlarged formation comprises a lower Bayn Dzak Member, dominated by moderate reddish orange sands with subordinate mudstone units, and an upper Tugrugyin Member, composed of pale orange to light gray …


Sedimentary And Tectonic Evolution Of The Flint Creek Basin West-Central Montana, Ryan A. Portner Jan 2005

Sedimentary And Tectonic Evolution Of The Flint Creek Basin West-Central Montana, Ryan A. Portner

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.


Lidar Based Predevelopment Digital Elevation Model Of Southeastern Palm Beach County, Florida, Mary Beth Stoddard Jan 2005

Lidar Based Predevelopment Digital Elevation Model Of Southeastern Palm Beach County, Florida, Mary Beth Stoddard

Electronic Theses and Dissertations 2000 - 2009

A new technique was devised that produces a LIDAR based predevelopment Digital Elevation Model and offers a more superior visualization, of the natural landscape prior to development, than the Bare Earth Model produced by Florida International University's Hurricane Center. Two locations in southeastern Florida have been chosen for this study. The first site is utilized as a control for testing the model and contains a present day ridge system that runs north and south through the Boca Raton cemetery. The second site is a paleowatershed, the Yamato Marsh which was located in Delray Beach. Modeling of the marsh site will …


Quantitative Clay Mineralogy Of Several Louisiana Soils, Johan Forsman Jan 2005

Quantitative Clay Mineralogy Of Several Louisiana Soils, Johan Forsman

LSU Master's Theses

A method was developed to simplify the approach to obtaining a better quantitative representation (QR) of complex clay mineral assemblages by XRD analysis. The method has eight steps: 1) preparation of samples with preferred orientation; 2) qualitative identification of phases; 3) peak decomposition to obtain precise locations of individual peaks contained within broad diffraction bands; 4) creation of a library of theoretical XRD patterns by modeling of one-dimensional XRD patterns; 5) selection of experimental library patterns; 6) employing the LINEST function found in common spreadsheet software to fit library patterns to experimental patterns; 7) evaluation of results to determine needed …


Neotectonic Framework Of The North-Central Alaska Range Foothills, Sean Patrick Bemis Dec 2004

Neotectonic Framework Of The North-Central Alaska Range Foothills, Sean Patrick Bemis

Geosciences

The northern foothills of the Alaska Range form a northward-convex salient at the apex of this orogen and the Denali fault. Despite the proximity of the northern foothills to the Denali fault and several historic large-magnitude earthquakes, the tectonic framework of this region has not been well-studied. A distinct pattern of east-trending folds and faults exists in both the bedrock and the geomorphic features. To assess the active structures of the region, I interpreted previous geologic mapping, developed cross-sections across the foothills belt, analyzed topographic and stream profiles, mapped the sequence of Quaternary fluvial terraces, and performed GPS transects across …


Geosciences Newsletter - 2004, Department Of Geosciences Nov 2004

Geosciences Newsletter - 2004, Department Of Geosciences

Geological and Environmental Sciences News

Vol. 1, No. 29

  • Mohamed Sultan, Chairperson
  • Faculty News
  • Emeriti News
  • Department News
  • Graduate Student News
  • Awards & Graduations
  • Alumni News
  • Field Trips
  • Outstanding Alumni Academy
  • Special Honor
  • New Faces in the Geosciences


Geodetic And Sconstraints On Some Seismogenic Zone Processes In Costa Rica, Edmundo Norabuena, Timothy H. Dixon, Susan Schwartz, Heather Deshon, Andrew Newman, Marino Protti, Victor Gonzalez, Leroy Dorman, Ernst R. Flueh, Paul Lundgren, Fred Pollitz, Dan Sampson Nov 2004

Geodetic And Sconstraints On Some Seismogenic Zone Processes In Costa Rica, Edmundo Norabuena, Timothy H. Dixon, Susan Schwartz, Heather Deshon, Andrew Newman, Marino Protti, Victor Gonzalez, Leroy Dorman, Ernst R. Flueh, Paul Lundgren, Fred Pollitz, Dan Sampson

School of Geosciences Faculty and Staff Publications

New seismic and geodetic data from Costa Rica provide insight into seismogenic zone processes in Central America, where the Cocos and Caribbean plates converge. Seismic data are from combined land and ocean bottom deployments in the Nicoya peninsula in northern Costa Rica and near the Osa peninsula in southern Costa Rica. In Nicoya, inversion of GPS data suggests two locked patches centered at 14 ± 2 and 39 ± 6 km depth. Interplate microseismicity is concentrated in the more freely slipping intermediate zone, suggesting that small interseismic earthquakes may not accurately outline the updip limit of the seismogenic zone, the …


Proclamations, National Monuments, And The Scope Of Judicial Review Under The Antiquities Act Of 1906, Roberto Iraola Oct 2004

Proclamations, National Monuments, And The Scope Of Judicial Review Under The Antiquities Act Of 1906, Roberto Iraola

William & Mary Environmental Law and Policy Review

No abstract provided.


Construction Of A Late Pleistocene Paleothermometer Based On Amino Acid Racemization In Fossil Succinea Shells, Richard Ayres Walther Sep 2004

Construction Of A Late Pleistocene Paleothermometer Based On Amino Acid Racemization In Fossil Succinea Shells, Richard Ayres Walther

USF Tampa Graduate Theses and Dissertations

Racemization kinetics of amino acids, determined for the commonly occurring fossil gastropod Succinea, facilitates the ability to construct an accurate and precise paleothermometer to estimate paleotemperatures over specific time intervals during the last 150,000 years in parts of Central Europe. Racemization within the carbonate shell of Succcinea is induced at high temperatures over increasing intervals of time in the laboratory and measured for aspartic acid (asp), glutamic acid (glu), valine (val), and phenylalanine (phe), by reverse-phase liquid chromatography.

The activation energy (Ea), frequency factor (A), and forward rate constant (k1) of the Arrhenius equation are determined from …


An Unusually Large Aulocopella Winnipegensis And Associated Demosponges From The Upper Ordovician Beaverfoot Formation, Southeastern British Columbia, J. Keith Rigby, Paul A. Johnston Aug 2004

An Unusually Large Aulocopella Winnipegensis And Associated Demosponges From The Upper Ordovician Beaverfoot Formation, Southeastern British Columbia, J. Keith Rigby, Paul A. Johnston

Faculty Publications

An unusually large specimen of the rare digitate to bladed Aulocopella winnipegensis Rauff and three relatively normal sized specimens of ashtray-shaped Hudsonospongia? sp. constitute the first record of demosponges from the Upper Ordovician Beaverfoot Formation in southeastern British Columbia and the first record of these taxa from western Canada. Gross form and canal structure are well preserved, but dolomitization and (or) coarse microsphaeroidal silicification have obliterated spicules and other structural details. We interpret these sponges as epifaunal recliners, without means of attachment to the substrate, a life mode rarely encountered in the modern sponge biota.


Computer Modeling Of Geology In The Sparta And Montpelier Quadrangles Of Clay And Chickasaw Counties, Mississippi: A Tantalizing Near Miss, Jason Defibaugh Y Chávez Aug 2004

Computer Modeling Of Geology In The Sparta And Montpelier Quadrangles Of Clay And Chickasaw Counties, Mississippi: A Tantalizing Near Miss, Jason Defibaugh Y Chávez

Theses and Dissertations

This project attempted to combine digital data sets to define and map geologic features in the Sparta and Montpelier quadrangles of Chickasaw and Clay counties in northeastern Mississippi. LANDSAT TM, digital elevation, and soil permeability data was used in conjunction with reference data for the Sparta quadrangle to build a computer model. Variables used in the model were: geology, slope, soil permeability, vegetation indices, the first three bands of a tasseled cap transformation, and drainage frequency. The data used was LANDSAT TM 30 meter imagery, digital elevation models, also at 30 meter resolution, Penn State STASGO soils data, and the …


Accuracy Of Neural Network Classifiers In Humid Tropical Areas, Genong Yu Aug 2004

Accuracy Of Neural Network Classifiers In Humid Tropical Areas, Genong Yu

All-Inclusive List of Electronic Theses and Dissertations

This research develops a better understanding of the use of neural networks in the context of tropical land cover characterization using multiple scale remotely sensed data. Results of the research contributed to developing a robust neural network classifier suitable to use for humid tropical land cover classification in areas such as Altamira, Brazil. Research was focused upon the following: (1) performance ofneural networks with different ancillary data- such as DEM (digital elevation model) and its derivatives; (2) effect of spatial scale on neural network classifiers using remote sensing data from IKONOS, Landsat TM, ASTER, and MODIS; (3) accuracy of neural …


Visualizing The Geology Of Lake Trout Spawning Sites: Northern Lake Michigan, Peter Dartnell, Peter Barnes, James V. Gardner, Kristen Lee May 2004

Visualizing The Geology Of Lake Trout Spawning Sites: Northern Lake Michigan, Peter Dartnell, Peter Barnes, James V. Gardner, Kristen Lee

Center for Coastal and Ocean Mapping

Geologists and biologists are working together to understand the links between lake floor geology (composition and shape) and the distribution of lake trout throughout their life cycle. Lake floor geology is one of the main factors determining where lake trout spawn, feed, and hide. In support of ongoing research to study Lake Michigan trout habitats, the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers mapped the morphology of principle lake trout spawning sites. Using the Army Corps of Engineer's SHOALS airborne lidar (Light Detection and Ranging) system we mapped six regions in Northern Lake Michigan in …


Amcs Activities Newsletter, No. 27, May 2004, Bill Mixon May 2004

Amcs Activities Newsletter, No. 27, May 2004, Bill Mixon

KIP Articles

Contents: Authors' Addresses -- New AMCS Bulletins -- Mexico News -- Long and Deep Caves Lists -- Deep Pits List -- Proyecto Cerro Rabon 2004 -- Mexpe 2002 - Sistema Tepapa -- Caving in Sistema Cheve, Oaxaca -- Caves on the Jalpan Quadrangle, Queretaro -- Ox Bel Ha, Spring 2003 -- Maya Cave Shrines, Quintana Roo -- Speciation in Aquatic Trogloxenes in Cenotes -- Caving in Cuetzalan -- History: First Speleological Survey of Mexico Trip -- Chiropterphobia -- Gruta de San Sebastian -- Grutas de Balancanche -- Diving the Cheve Sumps -- Caves of Atoyac, Veracruz -- Geography of Caves …


A Case History Of Site Instability Due To The Presence Of A Shale Layer Above Sloping Bedrock, Sanjeev Kumar, Braja M. Das, Michael L. Hall Apr 2004

A Case History Of Site Instability Due To The Presence Of A Shale Layer Above Sloping Bedrock, Sanjeev Kumar, Braja M. Das, Michael L. Hall

International Conference on Case Histories in Geotechnical Engineering

A study conducted for St. Louis County of Missouri, United States of America classified several areas of the county as unstable for any type of construction because of the presence of high plastic shaley clay or clayey shale on sloping bedrock. These areas are considered to have a potential for site instability to occur due to any change in natural conditions that may increase the moisture content of the high plastic shaley clay or clayey shale. A two-story parking garage, founded on shallow foundations, constructed in one of the potentially unstable zones, showed some movement after several years of its …


Environmental Geotechnics To Study A Historical Town, Filippo Ciuffi Apr 2004

Environmental Geotechnics To Study A Historical Town, Filippo Ciuffi

International Conference on Case Histories in Geotechnical Engineering

The present paper summarizes the original approach, the different stages and the most innovative results of an interdisciplinary research activity, carried out on the subsoil of a historical site, in a seismic area, in Italy: the old town of Potenza, capital of the Basilicata Region. The entire Research-work has been designed and implemented within a total period of about 3 years. The paper is divided into twelve paragraphs and is organized logically, so that the reader can follow the development sequence of the different, interdisciplinary activities, detailed in the “Research General Flow-Chart”. After the Introduction [paragraph 1.0.0], the Philosophical Approach …


Eleven Case Studies Of Failures In Geotechnical Engineering, Engineering Geology, And Geophysics: How They Could Have Been Avoided, David Cummings, Frank J. Kenton Apr 2004

Eleven Case Studies Of Failures In Geotechnical Engineering, Engineering Geology, And Geophysics: How They Could Have Been Avoided, David Cummings, Frank J. Kenton

International Conference on Case Histories in Geotechnical Engineering

When a failure occurs, geotechnical engineers, engineering geologists, and geophysicists assign its cause to an event that immediately precedes the failure, such as an earthquake, heavy rainfall, flood, or other natural event. Assigning the failure to the immediate event is misplaced; the metastasis occurred because marginally stable conditions were allowed to exist through substandard investigations by the technical personnel, improper design, and inadequate review by the permitting agency. The fundamental cause of the failure is human error and is manifested in one or more of six categories. (1) Before the investigation, during discussions with the client. (2) During the investigation, …


Stone Column Ground Improvement Against Liquefaction For The Preveza-Aktio Immersed Tunnel, Christos Vrettos, Stavros Savidis Apr 2004

Stone Column Ground Improvement Against Liquefaction For The Preveza-Aktio Immersed Tunnel, Christos Vrettos, Stavros Savidis

International Conference on Case Histories in Geotechnical Engineering

The construction of the road fixed-link crossing between Preveza and Aktio on the north-western coast of Greece has recently been completed. The project consists of an immersed single-tube tunnel under the strait and two cut-and-cover tunnels at the ends of the immersed part. The immersed section is constructed of eight precast rectangular concrete elements placed on the sea bottom at a depth of 25 m. The site is characterized by high seismicity. Foundation soil consists of Holocene marine sediments comprising irregular layers of sands, silts and clays that extend to great depth in the central part of the strait. Along …


Impact Of Geographical Information Systems On Geotechnical Engineering, J. David Rogers, Ronaldo Luna Apr 2004

Impact Of Geographical Information Systems On Geotechnical Engineering, J. David Rogers, Ronaldo Luna

International Conference on Case Histories in Geotechnical Engineering

Over the last four decades Geographical Information Systems (GIS) have emerged as the predominant medium for graphic representation of geospatial data, including geotechnical, geologic and hydrologic information routinely used by geotechnical and geoenvironmental engineers. GIS allow unlimited forms of spatial data to be co-mingled, weighted and sorted with any number of physical or environmental factors. These data can also be combined with weighted political and aesthetic values to create hybrid graphic products capable of swaying public perceptions and decision making. The downside of some GIS products is that their apparent efficacy and crispness can also be deceptive, if data of …


Meet Our Authors And Speakers, Multiple Authors Apr 2004

Meet Our Authors And Speakers, Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Estimation Of Maximum Advance In Kaka-Reza Water Conveyance Tunnel At 700 Meter Depth, D. Azizmohammadi, H. Abbasi Apr 2004

Estimation Of Maximum Advance In Kaka-Reza Water Conveyance Tunnel At 700 Meter Depth, D. Azizmohammadi, H. Abbasi

International Conference on Case Histories in Geotechnical Engineering

The purpose of this research is the determination of maximum rate of advance in one stage of blasting in middle zone of Kaka-Reza water conveyance tunnel. In this zone of tunnel with average 700 meters of overburden, based on geological and geo-mechanical conditions, the supporting system will install immediately after excavation. The methodology of this research is combined of direct strain evaluation technique (DSET), numerical modeling (FLAC 2D) and convergence analysis. The research is done in three stages. At the first stage, the allowable strain in surrounding rock mass of tunnel is calculated based on DSET. At the second stage, …


Florida's Energy Future: Opportunities For Our Economy, Environment And Security, Florida Solar Energy Center, Philip W. Fairey Jan 2004

Florida's Energy Future: Opportunities For Our Economy, Environment And Security, Florida Solar Energy Center, Philip W. Fairey

FSEC Energy Research Center®

The future of Florida's economy, environment and security is inextricably intertwined with our energy use decisions. Our state has one of the nation's fastest growing populations, promoting rapid expansion of an energy industry that imports its fuel supplies. Florida exports approximately $32 billion per year for these energy fuels. Moreover, the Florida economy depends critically on tourism and agriculture, and the fuels and energy products that maintain them. Our pristine environment is the primary natural resource supporting this unique economic engine and the adverse effects of our rapidly growing energy use now stress it. Our State's economic well-being and security …


Earth Day, Every Day, University Of South Alabama Jan 2004

Earth Day, Every Day, University Of South Alabama

Conservation/Energy Alternatives

Bibliography and photographs of a display of government documents from the University of South Alabama.


Late Albian Dinosaur Tracks From The Cratonic (Eastern) Margin Of The Western Interior Seaway, Nebraska, Usa, R. M. Joeckel, J. M. Cunningham, R. G. Corner, P. L. Phillips, G. A. Ludvigson Jan 2004

Late Albian Dinosaur Tracks From The Cratonic (Eastern) Margin Of The Western Interior Seaway, Nebraska, Usa, R. M. Joeckel, J. M. Cunningham, R. G. Corner, P. L. Phillips, G. A. Ludvigson

School of Natural Resources: Faculty Publications

No abstract provided.


Uis Commission On Volcanic Caves Newsletter, No. 42, October 2004, Jan Paul G. Van Der Pas Jan 2004

Uis Commission On Volcanic Caves Newsletter, No. 42, October 2004, Jan Paul G. Van Der Pas

Union Internationale de Spéléologie (UIS) Commission on Volcanic Caves

Contents: Chairman & editorial address -- Latest News -- Takanori Ogawa -- Spallanzani-Father of Vulcanospeleology -- Lazzaro Spallanzani: The Father of Vulcanospeleology (1729-1799) -- News from Kenya -- Proceedings Catania 1999 -- Report sent by Dr. Trimmel -- Report from a visit of a lava cave in Indonesia nearly 20 years ago -- Bill Halliday's permit to access Mowich Cave -- Letter from John Ouimet -- About Listinf of Lava Tube Caves -- The ASU Global Lava Tube Database: A New and Expanding Resource -- Database on Icelandic caves -- A Data Base and classification system for the Azorean volcanic …