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Spatial Analysis Of Topography For Glacier Mapping In The Western Himalaya, Lubica Cverckova
Spatial Analysis Of Topography For Glacier Mapping In The Western Himalaya, Lubica Cverckova
Student Work
Understanding climate change requires accurate assessment of the Earths cryosphere, as glacier fluctuations directly and indirectly reflect changes in radiative forcing and temperature and precipitation patterns. Direct assessment of alpine glaciers in high-mountains is notoriously difficult, and assessment from space represents the only practical alternative for assessing regional and global ice-fluctuation patterns. The mapping of debris-covered glaciers is especially problematic, as glacier surfaces exhibit spectral reflectance patterns similar to surrounding rock and sediment. Therefore, multispectral analysis of satellite imagery does not permit accurate delineation. Consequently, the use of satellite-derived topographic information and spatial analysis were evaluated for mapping the Raikot …
A Spatial Analysis Of The Foreign-Born Population In Douglas Sarpy County, Nebraska – 2000, Leigh Anne L. Opitz
A Spatial Analysis Of The Foreign-Born Population In Douglas Sarpy County, Nebraska – 2000, Leigh Anne L. Opitz
Student Work
For a city that was initially settled mostly by Europeans, the recent immigrants largely from non-European countries, arriving in a changed urban and societal setting, have altered the settlement geography of Omaha, Nebraska. Due to the economic attainment of many newcomers to the country, many immigrant groups are able to settle in more prosperous areas than previous immigrants, and therefore live further away from the inner city. The transportation infrastructure throughout the city has also improved since the beginning of the century, so immigrants are able widen their geographic mobility. The resulting settlement pattern of these new immigrants is therefore …
All About A Line: The Sidney-Black Hills Trail's Impact On The Cultural Landscape Of Western Nebraska And South Dakota, Abbey R. Mcnair
All About A Line: The Sidney-Black Hills Trail's Impact On The Cultural Landscape Of Western Nebraska And South Dakota, Abbey R. Mcnair
Student Work
When driving through western Nebraska and South Dakota, one can identify artifacts and signs of an earlier highway. In some places the wagon ruts and foundations of previous foundations are still visible; in other places the highway is represented through markers and signs erected by historically minded organizations. The presence of these signs, markers, and wagon ruts mark representations o f the Sidney-Black Hills Trail on the landscape. The presence o f the wagon ruts and settlement foundations mark a representation of the trail as it was and gives one a view of the real American West; a West that …
Interactive Topographic Web Mapping Using Scalable Vector Graphics, Peter Pavlicko
Interactive Topographic Web Mapping Using Scalable Vector Graphics, Peter Pavlicko
Student Work
Large scale topographic maps portray detailed information about the landscape. They are used for a wide variety o f purposes. USGS large scale topographic maps at 1:24,000 have been traditionally distributed in paper form. With the advent of the Internet, these maps can now be distributed electronically. Instead of common raster format presentation, the solution presented here is based on a vector approach. The vector format provides many advantages compared to the use of a raster-based presentation. This research shows that Scalable Vector Graphics (SVG) is a promising technology for delivering high quality interactive topographic maps via the Internet, both …
Acculturation And Geographic Mobility: The Sudanese Refugees In Omaha, Nebraska, Shelby Lynn Sack
Acculturation And Geographic Mobility: The Sudanese Refugees In Omaha, Nebraska, Shelby Lynn Sack
Student Work
Geographic mobility, defined simply as an individual’s ability to move from point A to point B, is a significant element in an individual’s process of adaptation - possibly affecting an individual’s social mobility. With more than 2,000 Sudanese refugees who have settled in Omaha, Nebraska, in the last few years, this study set out to identify the dominant cultural and situational factors that affect the mobility of this population. This thesis research incorporated both qualitative and quantitative techniques into the methodological design. Semistructured interviews were conducted to collect the data, which was then utilized to create activity space maps. Though …
Anisotropic-Reflectance Correction Of Multispectral Satellite Imagery In Complex Mountain Terrain, Stephen B. Cacioppo
Anisotropic-Reflectance Correction Of Multispectral Satellite Imagery In Complex Mountain Terrain, Stephen B. Cacioppo
Student Work
The utilization of satellite imagery acquired over rugged terrain is problematic because of anisotropic reflectance. A variety of environmental factors, such as the atmosphere and the topography, cause significant variation in the irradiant and radiant flux. Consequently, satellite imagery must be radiometric ally corrected to account for these variations which influence the at-satellite spectral response. In mountain terrain, the topographic effect is very pronounced, and satellite imagery must be normalized utilizing various techniques. The purpose of this research was to evaluate various implementations of the Minnaert correction technique which were designed to account for the influence of topography and land …
An Analysis Of The Impacts Of Land Use Change And Greenspace On Runoff Rates In An Urbanized Watershed, Kelly Anne Niemeyer
An Analysis Of The Impacts Of Land Use Change And Greenspace On Runoff Rates In An Urbanized Watershed, Kelly Anne Niemeyer
Student Work
This study utilizes the HEC-1 hydrologic model interface within the Watershed Modeling System (WMS) software program to analyze the impacts of urban development and greenspace within a sub-basin of the Papillion Creek Watershed in eastern Nebraska. The sub-basin, located in Douglas County, Nebraska, is currently 30% developed. Four additional land use scenarios were created. The first three scenarios represent a progression of land development from current to complete development. The fourth depicts a completely developed sub-basin with an added greenspace system. Digital terrain data was used within WMS to delineate the basin and its sub-basins. Runoff rates were generated for …
Post-Depositional Weathering Of Cave Sediments In Berry Cave, Pulaski County, Missouri, Melissa L. Milner
Post-Depositional Weathering Of Cave Sediments In Berry Cave, Pulaski County, Missouri, Melissa L. Milner
Student Work
Berry Cave is a vadose system, and is classified as a branchwork cave with superposed anastomotic mazes. The cave is situated in the non-glaciated karst region of Roubidoux Creek in Pulaski County, south-central Missouri. Two types of sediment deposits have been identified in the cave: an allogenic fine clay fill preserved in a stream cut canyon and an autogenic/allogenic loam comprising a debris flow. The surface soil above the cave is silt loam, and is the source for the sediments o f the debris flow in Berry Cave. Three episodes o f geomorphic development have been determined to be related …
The Geography And Geomorphic Development Of Gifford Point Near Bellevue, Nebraska, Constance L. Watson
The Geography And Geomorphic Development Of Gifford Point Near Bellevue, Nebraska, Constance L. Watson
Student Work
Anthropogenic influences frequently produce more lasting effects on the landscape than natural forces (Hook, 1994). Many areas of the world have been altered to accommodate human needs. Throughout history, rivers have been diverted or dammed in attempts to provide safe travel routes, irrigation, or energy. Gifford Point is as much a product of human forces - the need for a stable, navigable waterway - as it is of the Missouri River from which it was originally formed. This study explores the factors contributing to geomorphic changes to the point during the past 100 years with emphasis on anthropogenic changes resulting …
Changes In Land Cover And Nesting Habitat For The Interior Least Tern And Piping Plover Along The Missouri River: 1983-1991, Todd D. Noble
Changes In Land Cover And Nesting Habitat For The Interior Least Tern And Piping Plover Along The Missouri River: 1983-1991, Todd D. Noble
Student Work
This thesis examines land cover changes that affect shorebird habitat at four sites along the Missouri River using wetland habitat and hydrologic data. Wetland habitat data was aggregated into four land cover categories, including one which corresponded with potential shorebird nesting habitat. Type, location, and quantity of land cover changes at each site were determined between 1983 and 1991. Impacts upon tern and plover nesting habitat were assessed by analyzing changes in the corresponding land cover category. Associated hydrologic information, including gage heights and discharge records, were utilized to help understand local conditions. It was found that there were substantial …
The Improvement Of Digital Image Classification Over An Urban Area: A Probabilistic Relaxation Approach, Yafei Lu
Student Work
Digital image classification is a technique to extract land cover information from imagery using certain classification schemes. Additional information, either in a map, digital or verbal format, from multi-sources other than satellite imagery can be integrated into a classification scheme to improve its performance. The research in this field is essential because data interpretation has long been a weak link between the functions of two powerful systems: data acquisition by the remote sensing system and data storage, renewal and retrieval by the geographic information system - that has been more and more involved in the geographical research with the development …
An Improved Method Of Assigning Spatial Characteristics In A Raster Environment, Richard A. Benack
An Improved Method Of Assigning Spatial Characteristics In A Raster Environment, Richard A. Benack
Student Work
This thesis will attempt to develop an improved method of handling spatial characteristics in a raster GIS environment. The possibility of assigning multiple variables to a single location in a raster map will be explored. This will be done by developing a non-traditional Geographic Information System (GIS) called the Advanced Raster Analysis Subsystem (ARASS). ARASS will constitute one stop in the continuing evolution of GIS.
Texture Measures Ofspatial Patterns On Thematic Mapper Imagery: An Experiment., Li Bin
Texture Measures Ofspatial Patterns On Thematic Mapper Imagery: An Experiment., Li Bin
Student Work
The digital format of remote sensing data facilitates the measurement of spatial patterns. The concept of measurability of spatial patterns has important geographic implications and may open up an alternative applications for satellite remote sensing of urban areas. Texture analysis, a set of techniques developed in pattern recognition, is found to be useful in measuring spatial pattern on digital imagery. Two approaches of texture analysis are selected. One is Haralick's Spatial Dependence M atrix, the other is Jernigan's, et. al., Entropy-based texture measures. They perform in spatial domain and frequency domain respectively. Ten subimage areas in Omaha suburb are selected …
Land Use Changes Through Time: Mapping The Hard Core Of Omaha, Nebraska's Cbd, 1940-1980, Rebecca Dawn Hawley
Land Use Changes Through Time: Mapping The Hard Core Of Omaha, Nebraska's Cbd, 1940-1980, Rebecca Dawn Hawley
Student Work
The study addresses and follows the changing nature and character of Omaha, Nebraska's hard core between 1940 and 1980 by mapping its extent and examining its land use content for each year studied: 1940, 1951, 1961, 1970, and 1980. In order to map Omaha's hard core, a methodology based upon earlier studies was devised which allowed the area in question to be delimited through time using land use as a base. In addition to the hard core movements, the positions of the peak land value intersection and the arithmetic mean center were included for each time increment, demonstrating spatial change …
A Geographic Information System For Residential Development Plans: Generating Physical "Desirability" Surfaces, Kyle E. Juracek
A Geographic Information System For Residential Development Plans: Generating Physical "Desirability" Surfaces, Kyle E. Juracek
Student Work
Residential development on the urban fringe is a complex process. Developers are confronted with a diversity of considerations that has made site selection a difficult task. A possible solution may be the creation of a comprehensive information system to aid developers in their general site selection decisions. This study, then, is intended as a first step toward the development of such a system. The primary objectives of the study were four-fold: (1) to demonstrate that there is more to a landscape than meets the eye; (2) to provide developers with a unique way of looking at some of the geographic …
The Affect Of Geographic Setting On Community Growth, Development And Redevelopment Planning At Waldport, Oregon, David R. Perry
The Affect Of Geographic Setting On Community Growth, Development And Redevelopment Planning At Waldport, Oregon, David R. Perry
Student Work
Geographical site and situation play an important role in community growth and in making planning recommendations. Geology, topography, climate and soils strongly influence early growth and development, determining the shape of the community and providing parameters affecting economic activities. The human situation in terms of ethnic groups, technology and the spatial relationship of the community site to regional population centers, explains the long-range evolution of the settlement. The physical landscape normally places certain constraints on human activities that require an expenditure of time, money and effort ot overcome. Additionally, human geography determines the social, economic and political needs and potentials …
The Feasibility Of Using A Geographic Information System To Monitor Change In A Portion Of The Rural-Urban Fringe In Omaha, Nebraska, John Ross
Student Work
Geographers and cartographers have long been interested in using new methods that make it possible to investigate and depict different aspects of the physical and human/cultural environment. In recent years, Geographic Information Systems (GIS) have proven to be useful in studying spatial relationships and may be useful in monitoring certain types of change in the environment. A GIS is most often a computerized system designed to store, manipulate, analyze, and display large volumes of spatial data. The various applications of geographic information system have yet to be explored.
Development Of A Small Area Population And Housing Estimating Systems For The City Of Omaha, Stephen Warren Kinzy
Development Of A Small Area Population And Housing Estimating Systems For The City Of Omaha, Stephen Warren Kinzy
Student Work
The need, for population housing information describing the conditions of our urban areas has become critical for city and county governments in their attempts to deal with such problems as urban growth, inner city decay and redevelopment, location of public facilities, and allocation of city services. No longer can the decennial census inventories be used as the only source of urban information. City and county governments must develop methods of estimating population and housing characteristics between census enumerations that can provide accurate, timely and meaningful information concerning the urban community. This information must then be made available to local decision …
Great Plains-Rocky Mountain Camping: A Spatial Analysis, Dennis E. Bussom
Great Plains-Rocky Mountain Camping: A Spatial Analysis, Dennis E. Bussom
Student Work
As our society becomes increasingly leisure-oriented with the growth of disposable personal income and shorter work periods, the need for recreation facilities continues to rise. Government agencies have attempted to meet this demand by the expansion of public facilities within the total outdoor rcreation resource complex. Similarly, commerical entrepreneurs have recognized the profit potential fo specific recreation elements with a resulting increase in facilities such as commerical campgrounds. Because of the difficulties in obtaining data, economic demand and supply studies have been limited mostly to the public sector. An early study stated that variables affecting public and commerical recreation facilities …
Geomorphic Mapping And Topographic Analysis Of The Barker Reservoir Area, Utah, William Clement Putnam
Geomorphic Mapping And Topographic Analysis Of The Barker Reservoir Area, Utah, William Clement Putnam
Student Work
A wide variety of geomorphic processes have interacted to produce a complex landscape in the High Plateaus of Utah. This study centers on the high southern slopes of the Aquarius Plateau in the drainage basin of North Creek where the landscape is primarily the result of mass-wasting processes and the subsequent modification of the mass-wasting deposits by fluvial action. The High Plateaus are composed of essentially flat-lying sedimentary strata overlain in places by volcanic rocks and separated by the scarps of highangle normal faults with the downthrow primarily on the west side. The climate and vegetation associations of the High …
The Role Of An English Land Company In The Settlement Of Northwestern Iowa And Southwestern Minnesota: A Study In Historical Geography, James P. Reed
The Role Of An English Land Company In The Settlement Of Northwestern Iowa And Southwestern Minnesota: A Study In Historical Geography, James P. Reed
Student Work
Scholars of frontier settlement have been aware for a long time that the westward expansion of the United States involved far more than the legendary "advancing wave" of hardy and determinedly independent pioneers, seeking "free" landon which to build themselves a permanent home and begin life anew. That the homeseeker played an important role in western settlement certainly cannot be seriously challenged. Indeed, a less mythical version of this particular kind of pioneer probably was, in the end, the most important of all. Scholarly research in recent years however, has revealed that the homeseeker was not very often the first …
An Inventory Of Land Use, Northwest, Omaha, Keith A. Nollen
An Inventory Of Land Use, Northwest, Omaha, Keith A. Nollen
Student Work
Spatial growth has been a significant factor contributing to and resulting from the changing structure of American cities. This research project attempts to identify the spatial growth and the resulting land use patterns and areal associations of a portion of the dynamic growth area of Omaha, Nebraska.
Changing Land Use Patterns In Cass County, Nebraska 1941-1971, Horst Dieter Albrecht
Changing Land Use Patterns In Cass County, Nebraska 1941-1971, Horst Dieter Albrecht
Student Work
This thesis is a study of the changing land use patterns of Cass County, Nebraska. Data for this thesis was obtained from government agencies and field research conducted by the author. The economic base of the county has traditionally been agriculture and agriculture continues to comprise the largest single occupation in the county. Average farm size is increasing, a trend which will continue to reduce the number of smaller, family operated farms. Although the number of inarms has been steadily declining, the value of land and per capita income has been rising. In terms of value received, cattle raising has …
Pomme De Terre Reservoir: A Study In Geographic Change, Michael W. Jinks
Pomme De Terre Reservoir: A Study In Geographic Change, Michael W. Jinks
Student Work
Since the early 1950's the U.S. Corps of Engineers have been quite active in Missouri, especially in the Ozark region. By developing several large flood control projects two distinct "lake areas" have emerged. One is located along the south central Missouri-Arkansas boundary in some of the most rugged portions of the Ozarks. The other lake area is located just inside the west central portion of the Missouri Ozarks. Though less rugged than the former it is still comparatively rough, with local relief approaching 200 feet along some rivers.