Index Catalog // ScholarsArchive@OSU

Identification of irrigation practices using photographic and optical-mechanical scanning remote sensing techniques

Creator:: Naim, Shamim
Abstract:: Irrigation is essential for profitable agriculture in the western United States. It is the largest consumer of water and power in Oregon. Conflicting uses of water and power and their scarcity demands judicious planning for allocation of these resources. Creditable baseline data are not only needed for irrigated crop acreages,...
Resource Type:: Dissertation

Determination of geographic information system database characteristics : an application of the information integration theory

Creator:: Brooks, Kris
Abstract:: The development of a geographic information system (GIS) requires the development of large databases of spatially related information. Scale, resolution and the classification of thematic data can vary considerably in terms of the level of detail at which the data are compiled and converted to machine readable form. The level...
Resource Type:: Dissertation

The influence of map complexity on interpolation accuracy.pdf

Creator:: Young, Brian K.
Abstract:: In this paper "map complexity" refers to the inherent intricacy of a mapped geographic pattern. Map complexity and sample size are two variables shown to influence the accuracy of interpolated dasymetric maps. An automated experiment was designed to investigate the precise relationship among map complexity, sample size, and the accuracy...
Resource Type:: Masters Thesis

Equal contrast tint progressions for computer cartography

Creator:: Bernert, Joseph A.
Abstract:: A psychophysical bisectioning experiment was performed to evaluate equal steps within tint progressions on a high resolution graphics terminal. In the bisectioning experiment each respondent partitioned a tint progression by interactively defining colors that were perceptually equidistant between two previously defined colors. Twenty test subjects performed the test on the...
Resource Type:: Masters Thesis

A Methodology to directly input data from an uncontrolled aerial photograph into a vector based geographic information system

Creator:: Sneed, Jacquelin M.
Abstract:: Historically the U.S. Forest Service has used uncorrected aerial photographs to delineate proposed and past management activities on the land base it manages. Transferring a boundary from an image not planimetrically correct to a planimetrically corrected image introduces errors. Positional accuracy of boundaries affects the number of acres the Forest...
Resource Type:: Masters Thesis

Accuracy of community-based spatial data collection in a GIS

Creator:: Wood, Matthew N.
Abstract:: Training high school students to conduct field mapping and data collection of wildlife habitat on public lands produces important data for local government geographic information systems and introduces students to the field of geography. However, the positional accuracy of the spatial data is important for use in a GIS, as...
Resource Type:: Capstone Project

Color specification and cartography: a comparison of the Munsell Color System and the HLS system

Creator:: Yeaple, Anne
Abstract:: Progress in the development of color CRT's and color graphic hard-copy devices offers a new tool for the thematic mapper. From a cartographic perspective, the technology for displaying and producing color maps has advanced without concern for cartographic principles and conventions in the employment of color. Since it is necessary...
Resource Type:: Capstone Project

Expert systems in computer cartography

Creator:: Ulshoefer, Veit Stefan
Abstract:: The purpose of this paper is to describe the application of expert system concepts to cartographic problems. Expert systems, a subfield of artificial intelligence, are computer programs based on knowledge and symbolic reasoning. The basic principles of expert systems will be explained. Areas of cartography that are most suitable for...
Resource Type:: Capstone Project

The development of a Geographic Information System (GIS) for the Greenbelt Land Trust of Corvallis, Oregon

Creator:: Scarlett, Desiree
Abstract:: The purpose of this project, therefore, is to develop a GIS for a small geographical area that is currently of high priority to the GLT. The development of this GIS will be documented in a sequential fashion, so that it may serve as a framework for future endeavors. This paper...
Resource Type:: Capstone Project

Digital slope-aspect display using nearly continuous hue classes

Creator:: Weston, Frederick N.
Abstract:: Slope-aspect is the compass direction of a slope at a particular location on a given surface, and can provide a graphic tool for people who require an understanding of the pattern of slope-aspect variation across a landscape. Slope-aspect maps can be helpful for terrain analysis, watershed management, building site analysis,...
Resource Type:: Capstone Project

Geographic Information System model rating old-growth stand significance on the Olympic National Forest

Creator:: Wettengel, William M.
Abstract:: With increased attention being focused on the remaining old-growth forest resource in the Pacific Northwest a way to ecologically rate forest stands is needed to assist the U.S. Forest Service in its management decisions. A Geographic Information System (GIS) model was developed to rate old-growth stands in a 49,500 acre...
Resource Type:: Capstone Project

Production of an animated cartography sample for teaching and instruction, with musings on the nature and usefulness of animated maps

Creator:: Whaley, Kristine A.
Abstract:: Animated cartography is still a new field. It has been experimented with for years, but it has not gained general usage except partially in use by the news media. Nevertheless, certain subjects cry out for displaying the patterns of movement over time, such as historical patterns of migration and settlement,...
Resource Type:: Capstone Project

Multivariate thematic map visualization of the Oregon 2001 drought

Creator:: Theirl, David M.
Abstract:: The visualization of climate patterns is a major theme in cartography. Short-term dramatic weather events such as hurricanes and tornado outbreaks are mapped and displayed immediately in order to capitalize on the sensational nature of the events, and to quickly and accurately convey the information to emergency workers and the...
Resource Type:: Capstone Project

The affect of pattern on gray tone area symbols: a psychophysical experiment

Creator:: Selle, Anthony R.
Abstract:: Equal value gray scales are frequently employed by cartographers to choose gray tone area symbols. Several researchers have tried to quantify perceived gray tone as a function of percent area inked or reflectance but results have varied. The influence of pattern and texture on gray tone perception is considered a...
Resource Type:: Capstone Project

An inventory of Oregon county land use maps with recommendations for future standardization

Creator:: Batch, Donna Jeanne
Abstract:: An inventory of existing land use maps developed by Oregon county planning departments has been made through use of questionnaires and interviews. The degree of consistency has been examined with regard to the types of base maps, scales, projections, base information, and classification schemes employed. Recommendations have been made for...
Resource Type:: Capstone Project

Hypermedia: potential for storing, managing and communicating natural resource information

Creator:: Barrington, Mack R.
Abstract:: Efficient management of natural resources requires the ability to utilize and integrate information. The challenge is to fully utilize this information base with its various degrees of accessibility, ever increasing volume and dispersed nature. The manager must be familiar with media types used to store, manage and communicate this information....
Resource Type:: Capstone Project

An application of photogrammetric techniques to the measurement of historic photographs

Creator:: Strausz, David A. Jr
Abstract:: The application of the collinearity solution by resection of the interior and exterior orientation parameters of historical photographs is investigated. The spatial coordinates of seven or more identifiable control points in the field of view of an historical photograph, combined with image coordinates of the control point images, allow solution...
Resource Type:: Capstone Project

Perception of Munshell chromas for computer-assisted map design

Creator:: Katz, Leslie E.
Abstract:: For many years, psychologists have studied the principles of psychophysics. Recently, cartographers have been considering psychophysical theory in color attribute analysis to aid in the design of maps. An experiment was conducted using the partitioning method by which the Munsell value scale was determined to find (R,G,B) coordinates giving equally...
Resource Type:: Capstone Project

The use of GIS in the analysis and prediction of available salmon habitat in an Oregon coastal stream

Creator:: Newton, Ann M.
Abstract:: Because of declines in salmon populations in recent years, the health of salmon habitat, in particular, is the focus of many resource agencies. The objective of this study is to use GIS to predict the location of suitable habitat. With data from an extensive set of stream surveys, GIS was...
Resource Type:: Capstone Project

Volcanic vulnerability : Determining the relationship between urban proximity to volcanoes and human development

Creator:: Hogue, Jennifer A.
Abstract:: Many studies have looked at human settlements around individual volcanoes for volcanic risk analyses, but few have done a comparative study to identify possible global patterns. With the use of Landsat ETM+ data, this study identifies and compares urban proximity to the Decade Volcanoes to identify volcanic settlement patterns. These...
Resource Type:: Capstone Project

From myth to reality: mapping the Northwest 1790 to 1850

Creator:: Mathewson, Sandy
Abstract:: The prevailing image of the Northwest at the beginning of the nineteenth century, as portrayed on maps published at the time, was based more on myth and wishful thinking than on geographic fact. During the next fifty years these myths were exploded as exploration of this previously unknown territory progressed,...
Resource Type:: Capstone Project

Historic preservation tracking project city of Corvallis, Oregon

Creator:: Lewis, Toby A.
Abstract:: This paper discusses the methods used to create a maintainable tracking system for used by the City of Corvallis' Plaiming Division for the purpose of historic preservation. The system includes a Microsoft Access2000 database and an ArcView GIS component. In addition to this, there is a web site component of...
Resource Type:: Capstone Project

Issues in the design of GIS databases for biodiversity assessments

Creator:: Minotti, Priscilla Gail
Abstract:: National and international organizations are developing spatial databases to assess the distribution of Biodiversity using geographic information systems (GIS). Currently, there are no guidelines or standards for building GIS databases for biodiversity assessment because database design is discipline-dependent and most biodiversity disciplines lack spatial traditions. The present research analyzes the...
Resource Type:: Capstone Project

Interactive mapping on the World Wide Web

Creator:: Musser, Karl
Abstract:: The World Wide Web is a promising new media for cartography. It allows the creation of interactive maps that can be accessed by the general public. There is a wide variety both in methods used and in the overall quality of current Web sites. This report reviews the state of...
Resource Type:: Capstone Project

Using Data Loss and Duplication Maps to study data use associated with nearest-neighbor resampling

Creator:: Perigny, Mathew
Abstract:: Nearest-neighbor resampling is a common procedure used by cartographers to reproject raster data sets. This type of resampling is useful because it retains the data from the original raster data set. However, during nearest-neighbor resampling some of the original data will be lost as it is reprojected, while other data...
Resource Type:: Capstone Project

Analysis of riparian vegetation age structure and forest land ownership in the Central Oregon Cascades

Creator:: Purnell, Christopher S.
Abstract:: Vegetation along the banks of mountain streams in the western Oregon Cascades comprises an integral part of the transition zone between land and water based ecosystems, and as such, is a vitally important and unique natural resource. Forestry is a major land use in this region, and harvesting riparian vegetation...
Resource Type:: Capstone Project

Deconstructing density : Assessing the per capita influence on vegetation and impervious surface area in Corvallis, Oregon

Creator:: Rempel, Marco Gascho
Abstract:: The density at which urban areas are developed has become a contentious issue, with advocates for compact cities in conflict with advocates for larger lots and suburban development. This research paper examines the associated impact of population density (grouped by residential zones) as measured by vegetation (Normalized Difference Vegetation Index)...
Resource Type:: Capstone Project

A comparison and contrast of pcARC/INFO vs. AutoCAD

Creator:: Smith, Pamela Ann
Abstract:: This paper explores the confusion that exists between general definitions of what constitutes a GIS or CAD system. Then a comparison and contrast is made of microcomputer versions of GIS and CAD programs using as examples two of the most popular, pcARC/INFO and Aut0CAD. The differences and similarities are discussed...
Resource Type:: Capstone Project

Interactive choropleth mapping using high resolution color graphics

Creator:: Spielman, Julie B.
Abstract:: A program, Color Choropleth Mapping System (CCMS), has been developed to provide high quality color choropleth maps at the Geography Department at Oregon State University. The program operates interactively and is menu-driven. When developing the software for mapping programs, programmers need to be aware of cartographic theory, as well as...
Resource Type:: Capstone Project

A site suitability model for Acacia koa reforestation on Mauna Kea, Hawai'i, utilizing a GIS

Creator:: Splean, Scott L.
Abstract:: A site suitability analysis for reforestation of the endemic Hawaiian forest tree koa (Acacia koa var. hawaiiensis) was performed. The study will assist the Hawai'i Resource Conservation and Development's (RCD) Forestry Committee in their effort to develop a master land use plan for koa regeneration on the Island of Hawai'i....
Resource Type:: Capstone Project

A TM-based hardwood-conifer mixture index for closed canopy forests in the Oregon Coast Range

Creator:: Maiersperger, Thomas K.
Abstract:: The purpose of this study was to develop, implement, and test methods for quantifying the relative proportion of hardwood and conifer cover from Thematic Mapper (TM) imagery. The research was focused on closed canopy forests in the Oregon Coast Range, where hardwood, conifer, and mixed stand conditions are prevalent. Based...
Resource Type:: Capstone Project

Sound in hypermedia for geographical and environmental interpretation and analysis

Creator:: Elle, R. Ingvar
Abstract:: This paper explores the use of hypermedia m geographical and environmental analysis, focusing on the use of sound. After providing essential definitions the paper presents a brief history of multimedia and hypertext (the combination of which lead to the term hypermedia) and object oriented programming. The concept of the hypermap...
Resource Type:: Capstone Project

Mapping from airphotos to determine disturbance in streamside land use

Creator:: Ely, Jane F.
Abstract:: High resolution land use/land cover information from stream riparian areas is useful in understanding instream biotic assemblages, and is often not available for geographical research. A classification system was developed which provides the types of information about the riparian buffer thought to be important in providing good habitat for, or...
Resource Type:: Capstone Project

Geometric laws for moire patterns produced by cartographic tint screens

Creator:: Greenfield, Leslie Susan
Abstract:: Moire patterns have been identified by printers as undesirable screen patterns caused by incorrect angling of overprinted halftones. These patterns are being examined by cartographers as a possible alternative to traditional methods of producing patterned areas on maps. Map design guidelines are needed before the use of moires can become...
Resource Type:: Capstone Project

Biophysical spectral regionalization of the Pacific Northwest using Advanced Very High Resolution Radiometer Imagery

Creator:: Greninger, Jon F.
Abstract:: Satellite imagery has become an efficient and time effective tool that may aid in the development of regional terrestrial and aquatic resource management schemes. A methodology utilizing National Oceanic and Atmospheric Administration (NOAA) Advanced Very High Resolution Radiometer (AVHRR) imagery, 1.1 kilometer spatial resolution at nadir, was developed for delineating...
Resource Type:: Capstone Project

Development of a GIS for the Marys River Watershed for fish and wildlife analysis

Creator:: Callahan, Brady
Abstract:: GIS technology has reached a point where it can be utilized by nonprofessionals in a desktop environment. This paper reviews the implementation of a pilot project for developing a localized-natural resource GIS. The resulting GIS was custom designed to answer questions posed by fish and wildlife biologists who need to...
Resource Type:: Capstone Project

An evaluation of species-area curves created from a systematically sampled date set using an automated accumulation technique

Creator:: Dale, Becci
Abstract:: This paper examines the influence of species, method, and area on automated species-area curve created from a systematically sampled data set. Because this is a new approach to species-area curves, three tests were run to evaluate the performance of the data sets and accumulation technique. The tests involved 1) range...
Resource Type:: Capstone Project

Remote sensing methodology for bioenvironmental surveillance in the vicinity of the Boardman Coal-Fired Power Plant, Oregon

Creator:: Denkers, D. Scott
Abstract:: In 1979, the Geographic Applications Laboratory of the Department of Geography, Oregon State University, was retained by the Portland General Electric Company to form and supervise a program to monitor the bioenvironment in the vicinity of the Boardman Coal-Fired Power plant. This partially fulfills requirements of the Department of Energy...
Resource Type:: Capstone Project

Mapping the potential acidic deposition in southwestern California using ambient air concentrations of acid precursors

Creator:: Doherty, David D.
Abstract:: Attempts to map the distribution of acidic deposition have been inadequate, particularly in areas of seasonal or limited rainfall. Ambient air concentrations of acid precursors may be used to monitor and map the distribution of potential acidic deposition. A network of stations in California currently monitor these ambient air concentrations....
Resource Type:: Capstone Project

Photorealistic landscape visualization : A step towards a Digital Earth

Creator:: Dey, Ryan M.
Abstract:: A Digital Earth is a visualization tool that uses the latest technologies to embed vast quantities of geographic data into easily understood information. By creating three-dimensional landscape visualizations that look as photorealistic as current technology allows, it becomes possible to see, explore, and spatially understand parts of the Earth as...
Resource Type:: Capstone Project

Extending the Ecosystem Management Decision Support system to enable data migration

Creator:: Crouse, Kenneth
Abstract:: In this work software is developed to take an ecosystem management tool used by the US Forest Service, the Ecosystem Management Decision Support (EMDS) system, and enhance its utility by capturing the results of an ecosystem assessment and saving them in a format that facilitates importation into other management tools,...
Resource Type:: Capstone Project

Vegetation analysis and spatial visualization of a tidal salt marsh

Creator:: Buchner, Ed L.
Abstract:: Mitchell Marsh, a tidal salt marsh in the Salmon River Estuary, was diked in the early 1960s. Restoration of the marsh, which began in late 1978, consisted of partial dike removal. Several studies have been conducted in the marsh, addressing the status of the developing salt marsh plant communities. Species...
Resource Type:: Capstone Project

Specification of cartographic layer tinting schemes for color graphic monitors

Creator:: Bradbury, Jaimie L.
Abstract:: This study provides some guidelines using and comparing the RGB (red, green, blue), HSV (hue, saturation, value), and HLS (hue, lightness, saturation) color specification systems to help designers of computer produced layer tinted maps to select appropriate and effective colors from the immense palette provided by modern color monitors. Map...
Resource Type:: Capstone Project

4D data visualization incorporating time into 3D animations

Creator:: Boright, Jonathan
Abstract:: ArcView 3D Analyst is a powerful geospatial tool, and has proven very useful in 3D visualization and analysis. In most cases, 3D data models are temporally static, representing only one instance in time. For many applications, the 'missing' time dimension is of great significance, and there is a need to...
Resource Type:: Capstone Project

The effects of lineage on spatial data quality

Creator:: Blair, Brent R.
Abstract:: When the Spatial Data Transfer Standard is adopted as a Federal Information Processing Standard, a Quality Report containing sections on lineage, accuracy, logical consistency, and completeness will be required of agencies producing digital cartographic data. This Quality Report diverges significantly from the "U.S. National Map Accuracy Standards", in place for...
Resource Type:: Capstone Project

OSU 360 : developing a virtual tour mapping infrastructure for Oregon State University

Creator:: Waggoner, Scott
Abstract:: Details the development of the OSU 360 virtual tour system (www.oregonstate.edu/osu360) from May 2008 to May 2009. OSU 360 is a collaboration between the Department of Geosciences, University Housing and Dining Services, Central Web Services, Web Communications, and Admissions/Enrollment. This article details the project development from determining goals, distinguishing locations,...
Resource Type:: Capstone Project

Aspen age structure and stand conditions on elk winter range in the northern Yellowstone ecosystem

Creator:: Larsen, Eric J.
Abstract:: Aerial photographs and field sampling were used to compare aspen (Populus tremuloides) age structure and stand conditions on elk winter range in the northern Yellowstone ecosystem. The elk winter ranges studied were the northern range in Yellowstone National Park (YNP) and the Gallatin National Forest and the Sunlight/Crandall elk winter...
Resource Type:: Dissertation

Comparing intercell distance and cell wall midpoint criteria for discrete global grid systems

Creator:: Gregory, Matthew Jay
Abstract:: Many diverse applications have begun to study processes and patterns at a global scale. To aid in this research, discrete global grid systems (DGGSs) are data models which enable environmental modeling, monitoring and sampling across the earth at a variety of spatial scales. A DGGS can be evaluated on a...
Resource Type:: Masters Thesis

Small circle subdivision method for development of global sampling grid

Creator:: Song, Lian
Abstract:: Modern environmental monitoring and modeling requires a good global grid system for survey sampling and accurate, spatially complete data collection of relevant environmental phenomena. A prime requirement for the global grid system is that the global sampling grids be regular and equal in area and have minimal shape distortion. None...
Resource Type:: Masters Thesis

The use of remote sensing in an integrated approach for stress detection on the cultivated cranberry

Creator:: Thoma, Michael N.
Abstract:: Remote sensing is an attractive method for the detection and monitoring of crop stress. The feasibility of using remote sensing for the detection and monitoring of fungal diseases, insects, weeds, and non-infectious diseases affecting the cultivated cranberry (Vaccinium macrocarpon Ait.) is evaluated. A study on the fungal disease twig blight...
Resource Type:: Masters Thesis

Multi-spatial scale representation of landscape transitions using landsat thematic mapper data and scale-space filters

Creator:: Lindeman, Dale R.
Abstract:: This thesis considered current approaches to describing landscape pattern, identified scale issues associated with defining objects, and explored techniques to reliably group elements based on land cover as represented by satellite imagery. It was recognized that there is an important need to develop tools that can be applied using remotely...
Resource Type:: Masters Thesis

Mapping the thermal climate of the H. J. Andrews Experimental Forest, Oregon

Creator:: Smith, Jonathan W.
Abstract:: The H. J. Andrews Experimental Forest in the Cascades of central Oregon provides a unique opportunity to study spatial climate patterns on a relatively small scale. Historical records at the 64 square-kilometer site provide a spatiallydense 30-year dataset. Thermal regimes at the H. J. Andrews are generally known but the...
Resource Type:: Masters Thesis

Epsilon, generalization and probability in spatial data bases

Creator:: Honeycutt, Dale M.
Abstract:: Cartographic generalization results In locational Inaccuracies of the generalized feature. The cartographer expresses the amount of generalization and the locational inaccuracy of the feature through map design and choice of map scale. This information is often lost when the map is digitized. In the environment of geographic Information systems, the...
Resource Type:: Capstone Project

Geographic information systems : some considerations for use in geographic research and analysis

Creator:: Herstrom, Andrew A.
Abstract:: The major considerations for acquiring and using a geographic information system (G..I.S.) for regional or national geographical research and analysis are examined in this paper. After defining what a G.I.S. is, some of the more practical and useful functions of a G.I.S. in day-to--day geographical work are outlined. Finally, the...
Resource Type:: Capstone Project

Geographic information systems : suitability to a land use planning problem

Creator:: Harmon, Robert C.
Abstract:: Geographic Information Systems (GIS) is a burgeoning field with its roots in geography. It is increasingly being used by a large variety of disciplines, including land use planning, as a decision support tool to help solve complex spatial problems. At Oregon State University, researchers have developed an analog model which...
Resource Type:: Masters Thesis

A translator program converting a digitized map into the format of the American proposed standard for digital cartographic data

Creator:: Langen, Gido
Abstract:: The American Proposed Standard for Digital Cartographic Data presents the new national exchange format which allows the transfer of spatial data among parties that may use different computer hardware and different operating system software. A translator program for the conversion of the AutoCAD DXf data structure to the Standard's output...
Resource Type:: Masters Thesis

Cartographic and projective techniques for a Corvallis area electrical load forecast

Creator:: Troseth, Steven
Abstract:: The Corvallis area study is made to help evaluate the local need for additional system capacity ten years in the future. The product of the study is an areally detailed projection of electrical demand. The demand is derived in two steps: the location, nature, and intensity of specific land uses...
Resource Type:: Masters Thesis

Habitat quality and assessing risks to avian biodiversity

Creator:: Barczak, Mary J.
Abstract:: Models that assess the risk to biodiversity from landscape change can help communities prioritize planning decisions. Accurate representation of the ecology and life history traits of species is necessary. This study introduces the use of habitat quality in a biodiversity risk model to determine the significance of habitat quality when...
Resource Type:: Masters Thesis

Computerized delineation of watersheds using digital elevation model data

Creator:: Flewelling, Douglas Mark
Abstract:: A method for delineating watersheds by computer using digital elevation model (OEM) data is presented. The five steps in this process are detailed and examples are shown. The algorithm was tested using a manually created OEM for a small area in Northern California. Three basins were delineated using the delineation...
Resource Type:: Masters Thesis

Airborne videography as a classification and validation technique for Landsat TM-based vegetation mapping

Creator:: Barrett, Charley, 1965-
Abstract:: The Oregon Department of Fish and Wildlife's (ODFW) Ecological Analysis Center (EAC) is in the process of creating, from Landsat Thematic Mapper (TM) imagery, a vegetation map of Oregon that will meet the latest standards set by the National Gap Analysis Program. Since field verification is often expensive and by...
Resource Type:: Masters Thesis

Relationships between grass canopy characteristics and Landsat Thematic Mapper bands

Creator:: Ripple, William J.
Abstract:: The relationships between spectral reflectance in the Landsat Thematic Mapper (TM) bands and grass canopy variables were evaluated using in situ remote sensing techniques. Reflectance data were collected from experimental plots of annual ryegrass (Lolium multiflorum) and tall fescue (Festuca arundinacea) using a Barnes Modular Multiband Radiometer (MMR). The canopy...
Resource Type:: Dissertation

Effects of scale properties on biodiversity mapping in Oregon

Creator:: Kennelly, Patrick J., (Patrick Joseph)
Abstract:: The effect of scale is an important concern in mapping of biodiversity. Scale issues include the grid cell size used for analysis and the effect of the extent and internal boundaries. Because biodiversity analysis involves combinatorial processes, determining the proper scale is data dependent and cannot be predicted from the...
Resource Type:: Dissertation

The application of spatial data analysis and visualization in the development of landscape indicators to assess stream conditions

Creator:: Buckley, Aileen R.
Abstract:: The main theme of this research is the application of geographic techniques in a study involving environmental monitoring and analysis of the associations between landscape and in-stream characteristics in the Pacific Northwest. The geographic techniques used in this study include (1) geographic information systems (GIS) coupled with statistical analysis and...
Resource Type:: Dissertation

Land cover change along the Willamette River, Oregon

Creator:: Oetter, Doug Rudolph, 1962-
Abstract:: The Willamette River and its floodplain in northwest Oregon have changed dramatically since European settlement. At one time, the river was a vast complex system of braided channels with a broad floodplain forest; it has now been simplified by channelization and dams, and the forest has been removed to support...
Resource Type:: Dissertation

A per-segment approach to improving aspen mapping from remote sensing imagery and its implications at different scales

Creator:: Heyman, Ofer
Abstract:: A per-segment classification system was developed to map aspen (Populus tremuloides) stands on Winter Ridge in central Oregon from remote sensing imagery. A 1-meter color infrared (CIR) image was segmented based on its hue and saturation values to generate aspen "candidates", which were then classified to show aspen coverage according...
Resource Type:: Dissertation

The effects of land use changes on forest fires in major islands of Indonesia

Creator:: Lumban-Tobing, Pago L.
Abstract:: The study examines the effect of forest clearance on fire occurrences in major islands of Indonesia, namely: Borneo, Sumatra, Sulawesi and Irian Jaya. The working hypothesis of the study is that forest clearing is a necessary predecessor for extensive fires to occur. The study is designed to test the idea...
Resource Type:: Dissertation

Practitioner’s hands and academic eyes : a practical approach to improving disaster preparedness and response

Creator:: Thompson, Wiley C.
Abstract:: This dissertation primarily uses observations made during the 2005 Kashmir earthquake relief effort and available disaster literature to address problems that impede effective and efficient disaster preparedness and response. Three manuscripts form the body of the dissertation. The manuscripts are thematically linked through the Emergency Management Cycle. Each manuscript examines...
Resource Type:: Dissertation

Modeling the Environmental Protection Agency's level IV ecoregions within the Klamath Mountains of Southern Oregon and Northern California : a Geographic Information System approach

Creator:: Zanger, Christopher
Abstract:: Ecoregions are regions of relative homogeneity with respect to specific ecosystem variables (Bailey 1976; Omernik 1995). There has been an increasing awareness that effective management of environmental resources must be undertaken with an ecosystem perspective (Omernik, 1995). Ecoregions serve as a spatial framework for assessing, managing, and monitoring ecosystems that...
Resource Type:: Capstone Project

The visualization of perspective systems and iconology in Dürer’s cartographic works : an in-depth analysis using multiple methodological approaches

Creator:: Wörz, Adèle Lorraine
Abstract:: This dissertation uses a new methodological approach for an in-depth analysis of three cartographic works. Studies within the discipline of the history of cartography have followed various methodologies throughout the past century. This dissertation argues that in order to come to a more complete understanding of how maps were produced...
Resource Type:: Dissertation

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