Browsing by Subject "Geographic information systems (GIS)"
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Item A lost home in the birthplace of Texas: Unraveling the history of the McAdoo Plantation Home through archaeological, geographical, and historical investigations(2013-08) Fischer, Heather A; Walter, Tamra L.; Jordan, MichaelIn the mid-19th century, General John David McAdoo operated a plantation in Washington County, Texas. General McAdoo spent the early years of his professional and political life living on a plantation, and eventually became a successful lawyer and military figure. Notably, he was a General in the Texas State Troops and a member of the Texas Supreme Court. Today, little remains of the original plantation, and historical records are scarce. Archaeological excavations of the foundations of what may be the main plantation house during the 2012 Texas Tech Field School are providing information about the house's history and its relationship to the McAdoo Plantation. The investigations of 41WT69 resulted in an extensive collection of artifacts, spatial data and historic information. This thesis will use the archaeological, geographical, and historical data collected during the field school, to achieve three objectives. This first objective is to define the extant remains of the structure, and the second objective is to examine if the remains of the 41WT69 structure is the same structure depicted in visual and oral histories. The third objective is to determine if there is any connection between the structure and the McAdoo plantation. Through the comparison of the archaeological data and the historical records, the architecture and history of the 41WT69 structure and its connection to McAdoo plantation will be better understood.Item An investigation of the use of electromagnetic induction methods and ground penetrating radar in the study of ephemeral streams(Texas Tech University, 1998-05) Burrell, Jeffrey FranklinThe objective of this research is to investigate the appUcation of frequency domain electromagnetic methods (FDEM) and ground penetrating radar (GPR) to the study of ephemeral streams within the Caprock Escarpment region of the Southem High Plains.Item Changes in black-tailed prairie dog towns on the Texas Panhandle determined by a geographic information system(Texas Tech University, 2001-05) Ernst, Andrea E.This study provided current, technologically advanced data on present populations and distributions of black-tailed prairie dog towns on the Texas High Plains.Additionally, these data provided up-to-date acreage estimates to further enhance conservation assessment and strategy plans recently being developed and coordinated by state and federal wildlife agencies. One main objective of this study was to determine if black-tailed prairie dog towns on the Texas High Plains, greater than 40 hectares (100 acres), were of the same size and spatial distribution in 1991 as they were in 1998. This was accomplished by (I) creating a GIS coverage of locations and size of prairie dog towns surveyed in 1991 and (2) determining the current (1998) black-tailed prairie dog population. Both the historical and current population estimates were obtained by utilizing aerial photography followed by final incorporation into the GIS. Once the prairie dog town GIS coverages were produced, differences of acreage were compared between years.Item Computer-aided mapping of Complex A at La Venta, Mexico(Texas Tech University, 2004-05) Sandoval, Rodrigo V.The Olmec site of La Venta in the state of Tabasco, Mexico, is one of the most Important early Mesoamerican cities. This thesis presents the process of creating a prototype Geographic Information System (GIS) of the site's Complex A area. The proposed reconstructive research design using a GIS aims at ensuring that despite the material losses that this site has experienced, the knowledge gained from archaeological excavations spanning the last 60 years will be easily accessible to any and all who wish to learn more or continue work on this site.Item Evaluating global positioning system (GPS) accuracy and precision among receivers(Texas Tech University, 2002-05) Ginsburg, Cherise Nöelle CarrNot availableItem Evaluation of groundwater quality in Castro, Dawson, and Terry Counties $c by Ajay Ramachandran.(Texas Tech University, 2004-08) Ramachandran, AjayNot availableItem Hurricane wind damage simulation using GIS (geographic information system)(Texas Tech University, 2001-05) Fernández, Carlos C.Hurricanes are among the most powerful and dangerous natural phenomena. Every year in the United States, hurricanes are responsible for casualties and billions of dollars in property damage. Recently, researchers have been able to reasonably anticipate the number of hurricanes that will develop during a hurricane season and even how many of those hurricanes will make landfall in the United States. Unfortunately, forecasters have not been able to determine the areas that will be affected by landfalling hurricanes on a given year, so that local governments and emergency agencies could reduce the impact of these windstorms. Nonetheless, the ability to predict property damage in a particular region due to a simulated hurricane could be a valuable tool for wind damage mitigation, post-storm recovery, and reliable insurance underwriting for structures against wind damage. This study presents a prediction scheme to estimate wind-induced damage to buildings of an area subjected to hurricane winds. The methodology involves the simulation of hurricane winds, application of geographic information system (GIS) platforms, and determination of damage to structures using a wind damage prediction model and an up-to-date database of building characteristics. The result of the analysis is an estimate of wind damage in dollar loss based on the current market value of the buildings. A case study demonstrates the application of the proposed method. The simulation of hurricane winds consists of wind strength vectors likely to result from a predefined hurricane. This simulation is accomplished using a hurricane wind field model (for winds prior to landfall) and a hurricane decay model (for winds after landfall). Once the hurricane winds are produced, GIS software is used to visualize and query the wind field. The wind field is overlaid on top of the existing buildings of the area, which allows determination of the maximum wind speed sustained by each building. Finally, given the maximum wind speed and building attributes for each building, a damage function gives an estimate of the total damage loss (in dollars)..Item Integrated approach to cyclone wind analysis and disaster planning for the Bangladesh coast(Texas Tech University, 2006-12) Islam, Tanveerul; Peterson, Richard E.; Mehta, Kishor C.; Haq, SaifTropical cyclones present the most serious natural hazard in the coastal areas of Bangladesh. In the past century, two of the deadliest tropical cyclones in modern history hit the coast of Bangladesh and each caused more death counts than the total number of casualties from all of the past U.S. hurricanes. Being a developing country, government and a majority of people in Bangladesh cannot afford to prepare for natural hazards and there is lack of research and mitigation measures to reduce the impact of damage from tropical cyclones. The purpose of this study is to understand the characteristics of landfalling tropical cyclones in Bangladesh and the associated risk and vulnerability in the coastal areas, which can help taking proper mitigation measures and would contribute towards effective disaster planning. Wind and storm surge are crucial factors in the determination of how much damage occurs in the coastal areas in association with any tropical cyclone. It is also important to delineate the regions based on cyclone risk and vulnerability for planning considerations. In this dissertation, the wind and storm surge from the tropical cyclones along the coast of Bangladesh are analyzed using the Monte Carlo simulations and cyclone risk and vulnerable regions of the coastal areas are identified. A reliable and comprehensive climatological database for the landfalling tropical cyclones, first of its kind for Bangladesh has been developed in this purpose for a 127-year period (1877-2003).Item Locating potential sites for marine protected areas in the Gulf of Mexico(Texas Tech University, 2003-12) O'Brien, Daniel JNot availableItem Mapping GIS Across Texas Libraries(Texas Digital Library, 2023-05-16) Jones, Sylvia; Carter, Kate; Been, JoshuaIn this poster, we will describe the work of the TDL GIS Interest Group’s Survey and Outreach Subcommittee in developing a dashboard that maps GIS support in academic libraries across the state. Our poster will describe the development of the original survey and dashboard and the updates we have incorporated into its second iteration. The GIS Across TX survey and dashboard have helped inform our understanding of GIS services provided by libraries, and can help connect librarians who have interests and/or responsibilities related to GIS. This poster aims to promote awareness of this resource, ensure representation of all libraries on the map, and encourage interested librarians to join the group and connect to the wider network of like-minded, maptastic colleagues!Item Spatial analysis of surface collected materials at the Lubbock Lake Landmark utilizing geographic information systems(Texas Tech University, 2002-08) Gill, Matthew INot availableItem Spatial and temporal variability in cotton yield in relation to soil apparent electrical conductivity, topography, and remote sensing imagery(Texas Tech University, 2005-12) Guo, Wenxuan; Maas, Stephan J.; Zartman, Richard E.; Bronson, Kevin F.; Segarra, Eduardo; Nagihara, SeiichiAnalysis of data from multiple fields over several years provides the ability to determine under what conditions precision agriculture may be suitable. The objectives of this study were to: a) evaluate the spatial variability in cotton (Gossypium hirsutum L.) yield; b) assess the temporal stability in cotton yield over different growing seasons; c) determine the spatial and temporal variability in cotton yield in relation to soil apparent electrical conductivity (ECa), terrain attributes, and bare soil brightness; d) delineate potential management zones based on ECa, terrain attributes, and bare soil brightness obtained from satellite images and evaluate the consistency of the management zones over different growing seasons. This study was conducted on eight commercially managed cotton fields on the Southern High Plains of Texas from 2000 to 2003. Yield data were collected using harvesters equipped with yield monitors and global positioning systems (GPS). Digital elevation data were collected using a real time kinematic (RTK) GPS system. Elevation, slope, and curvatures were derived from the digital elevation data. The Normalized difference vegetation index (NDVI) was derived from multiple in-season Landsat remote sensing images. Bare soil brightness was obtained from two pre-season Landsat remote sensing images. Three potential management zones for each field in each year were delineated using the k-means and the fuzzy c-means methods. Two fields with high spatial variability in yield and soil properties were temporally stable in relative yield distribution over the four years, while the other fields were not stable. Remote sensing images explained up to 70% of yield variability in fields with high variability in yield. The strongest relationship between yield and remote sensing images occurred in the middle of the growing seasons. Soil apparent electrical conductivity, terrain attributes, and bare soil brightness explained up to 81% of yield variability, which varied with fields and years. A greater amount of yield variability was explained in drier years than in wet years. Apparent electrical conductivity and bare soil brightness were more important in explaining yield variability than terrain attributes. Both k-means and fuzzy c-means were able to separate yield and the soil properties, but k-means tended to delineate more consistent and distinct management zones. Fields with higher variability in yield and soil properties tended to have more consistent management zones over different growing seasons. Based on the results from this study, soil apparent electrical conductivity and bare soil brightness appear to be the most important soil characteristics evaluated in this study for determining management zones in the Southern High Plains of Texas. Fields with high spatial variability in yield and soil conditions appear to be better suited for PA applications.