Geographic Information Sciences Commons^™

Comparison Result For The Prediction Accuracy Of Seawater Intrusion Based On Different Sample Sizes And Land Cover Characteristics Using Inverse Distance Weighting And Kriging, Ni Made Mega Melliana Suastini, Mochammad Firman Ghazali, Ananda Dermawan, Choirunnisa Salsabila, Lauditta Zahra, Mila Aulia

Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments)

This study aims to determine seawater intrusion (SWI) based on sample sizes' contribution to land cover characteristics' accuracy using inverse distance weighting (IDW) and Kriging. The SWI is explained based on the extracted salt concentration from the dissolved soil. Here, this study used 24 samples of salt concentration, namely salinity samples collected by systematic random sampling and divided into two groups: ground control points (GCP) and independent checkpoints (ICP). Two interpolation methods, namely IDW and Kriging, are used to make a spatial prediction of the SWI, and their results are evaluated based on their accuracy by observing the root mean …

Prepare For, Respond To, Recover, And Learn From Disasters: Using Data-Driven Methods To Model And Understand Disaster Resilience, Jinwen Xu

USF Tampa Graduate Theses and Dissertations

Community resilience reflects the ability of human communities to prepare for, respond to, recover, and learn from disastrous events. Community resilience carries different meanings in different phases of disaster management (i.e., preparedness, response, recovery, and mitigation). With the emergence of new geospatial data sources, human activities now can be captured through social media, mobile signals, and nighttime illuminations, which makes it possible to describe the conditions among various communities before, during, and after disasters. Therefore, this dissertation explored the use of different types of geospatial data sources (social media, nighttime light remote sensing, land-use data, and census survey data) during …

Spatial Mismatch Between Electric Vehicles (Evs) And Ev Charging Stations In Florida, Chuang Yin

USF Tampa Graduate Theses and Dissertations

Carbon emission is a key contributor to global warming and climate change. Reducing carbon emissions has posed as a challenge for several decades, prompting a rising alliance of nations, municipalities, corporations, and other establishments to commit to achieving net-zero emissions. One of the trends in many countries is to replace traditional internal combustion engine (ICE) vehicles with alternative fuel vehicles, especially electric vehicles (EVs). The Global EV Outlook 2021 report by IEA reveals that there was a 41% surge in the registration of electric cars in 2020, resulting in the sale of approximately 3 million electric cars worldwide. Since the …

Estimating Solar Energy Production In Urban Areas For Electric Vehicles, Shaimaa Ahmed

Theses and Dissertations

Cities have a high potential for solar energy from PVs installed on buildings' rooftops. There is an increased demand for solar energy in cities to reduce the negative effect of climate change. The thesis investigates solar energy potential in urban areas. It tries to determine how to detect and identify available rooftop areas, how to calculate suitable ones after excluding the effects of the shade, and the estimated energy generated from PVs. Geographic Information Sciences (GIS) and Remote Sensing (RS) are used in solar city planning. The goal of this research is to assess available and suitable rooftops areas using …

Risk Analysis For Asset Protection In Hoyt Arboretum, Portland, Or, Nathan Kossnar

Masters in GIS Practicum Reports

In order to fulfill Tree Risk Assessment Qualification (TRAQ) certification obligations to the International Society of Arboriculture (ISA), this project delineated areas within Hoyt Arboretum where tree hazards have the potential to fall on important infrastructure and areas of frequent use. The project utilized Metro’s RLIS lidar data to generate a canopy height model which was then applied to a variable window filter (vwf) algorithm to determine individual tree heights and locations throughout the park. Previously defined protection areas were used to determine which surrounding trees have the potential to damage structures or injure park visitors in the chance of …

Community Gis Workshop Design & Delivery: Columbia County Geographic Workshop At Scappoose Public Library, Marty Marquis

Masters in GIS Practicum Reports

Geographic information systems (GIS) provide tools for industry, government, and the public to describe, visualize and organize space both conceptually and materially. Because the technology is complicated and potentially expensive, it is often out of the reach of those communities that might most benefit from its use, even as it’s routinely wielded by business interests, bureaucrats, and representative bodies to identify and legitimize administrative boundaries, potential areas for growth and profit, spatially oriented legislation (restricted areas, zoning), and so forth. Communities whose members know how to use a GIS gain potential advantages in deploying narratives that contest official plans for …

Gis Analyst, Tyler Balthrop

College of the Environment Internship Reports

Actalent allowed me to work as a paid internship for Wiser Imagery Services as a GIS Analyst. As a GIS analyst day to day my job can be completely different every single day or it could be the exact same thing day after day. It just depends on the deadlines, the client we are working for and the task at hand. Often the contracts that Wiser receives are with the federal government. Many of the positions do require security clearances but not all. However, that is not to say that the information does not hold value to potential harmful actors.

Comparison Of Gis Methods For Estimating The Social Vulnerability In Response To Natural Hazards In The West Part Of The City Of Tualatin, Alex Troy

Geography Masters Research Papers

The influence of natural hazards on social vulnerability is an important topic in the risk analysis of natural disasters in the human-environment system. Due to the difficulty of directly measuring social vulnerability, composite indexes are used as a surrogate. Social vulnerability indexes attempt to characterize access to societal and local social services during or after disastrous events, using various indicators such as age, gender, ethnicity, socioeconomic status, housing organization, access to shelters, and medical facilities. Geographic information systems (GIS) are used for vulnerability analysis due to their visualization methods and demographic data analysis. However, limitations in GIS applications for social …

Multisensory Experiences In Archaeological Landscapes—Sound, Vision, And Movement In Gis And Virtual Reality, Heather Richards-Rissetto, Kristy Primeau,, David E. E. Witt, Graham Goodwin

Department of Anthropology: Faculty Publications

Archaeologists are employing a variety of digital tools to develop new methodological frameworks that combine computational and experiential approaches which is leading to new multisensory research. In this article, we explore vision, sound, and movement at the ancient Maya city of Copan from a multisensory and multiscalar perspective bridging concepts and approaches from different archaeological paradigms. Our methods and interpretations employ theory-inspired variables from proxemics and semiotics to develop a methodological framework that combines computation with sensory perception. Using GIS, 3D, and acoustic tools we create multisensory experiences in VR with spatial sound using an immersive headset (Oculus Rift) and …

Evaluating Behavioral Intention To Increase Classroom Geotechnology Usage Following Geoinquiry Implementation, Erika S. Klose

Theses, Dissertations and Capstones

As educational practices include foundational and cutting-edge preparation, the value of problem-based instruction employing industry-standard technologies increases. Geospatial technologies (GST), are a group of professional technologies, including GIS (Geographic Information Systems), used by industries to make informed decisions with spatial data. This study investigated educator behavioral intention to use GIS/GST in classroom practice, and the moderating effect, if any, of the GeoInquiry, a curricular resource. The UTAUT framework was employed to evaluate and quantify the factors impacting behavioral intention (performance expectancy, effort expectancy, social influence, and facilitating conditions). These data were examined to identify moderation by GeoInquiry usage. One hundred …

Developing A Standard Operating Procedure For Irrigated Agricultural Field Delineation And Irrigation Identification Using Examples From The Oregon-Idaho Border And Central California, Scott Milleson

Masters in GIS Practicum Reports

This practicum draws from experience working as an intern for The Freshwater Trust (an environmental nonprofit organization based in Portland, Oregon) from June to December of 2022. The work performed in this internship involved the delineation of agricultural fields using ArcGIS Online, an online collaborative mapping tool, as well as identifying and assigning irrigation type attributes on the Oregon-Idaho border along the Snake River, and the Deschutes Basin.

The purpose of this practicum project is to create a generalized guide for the delineation of agricultural fields and identification of irrigation type using a standard operating procedure for GIS interns, mapathon …

Delineating A Stream Network At Gale Crater, Mars, On Arcgis Pro: A Geographic Information Systems Approach, Elpidio Guzman De La Cruz

West Chester University Master’s Theses

The northwestern region of the Gale crater experienced flooding in the past. Delineation of stream networks for the northwestern region of Gale Crater, Mars employing geographic information systems (GIS) techniques is applied. The stream network produced by the algorithm in the study traverses the clay unit in Gediz Vallis, and visual HiRISE imagery analysis correlates with a topologic cross section of an inverted river channel of 750 meters wide and 90 meters deep. HiRISE imagery analysis further confirms a sulfate and clay stratigraphic unit in a stream 125 meters wide and 25 meters deep. Lastly, data smoothing procedures in the …

Wiser Imaging Services Internship, Tyler Balthrop

College of the Environment Internship Reports

Actalent allowed me to work as a paid internship for Wiser Imagery Services as a GIS Analyst. As a GIS analyst day to day my job can be completely different every single day or it could be the exact same thing day after day. It just depends on the deadlines, the client we are working for and the task at hand. Often the contracts that Wiser receives are with the federal government.

Dept Of Ecology - Gis Intern, Keiman Park-Egan

College of the Environment Internship Reports

This mapping was done in ArcGIS Desktop, an older predecessor to ArcGIS Pro. The first step of mapping a claim is to look it up in the Department of Ecology’s Water Resources Database. Each claim that we map has a digitized written application which tells us (more or less) of the person filing the claim, and the location of that claim. Afterwards, I would have to transcribe and map the location as best as I can in ArcGIS Desktop.

Linkages Between Atmospheric Circulation, Weather, Climate, Land Cover And Social Dynamics Of The Tibetan Plateau, Shobha Kumari Yadav

Graduate Theses, Dissertations, and Problem Reports

The Tibetan Plateau (TP) is an important landmass that plays a significant role in both regional and global climates. In recent decades, the TP has undergone significant changes due to climate and human activities. Since the 1980s anthropogenic activities, such as the stocking of livestock, land cover change, permafrost degradation, urbanization, highway construction, deforestation and desertification, and unsustainable land management practices, have greatly increased over the TP. As a result, grasslands have undergone rapid degradation and have altered the land surface which in turn has altered the exchange of heat and moisture properties between land and the atmosphere. But gaps …

Structural Analysis And Interpretation Of Deformation Along The Keweenaw Fault System From Lake Linden To Mohawk, Michigan, Nolan G. Gamet

Dissertations, Master's Theses and Master's Reports

The Keweenaw fault is likely the most significant and most studied fault associated with the Midcontinent Rift System. The fault roughly bisects the Keweenaw Peninsula and places Portage Lake Volcanics (~1.1 Ga) over much younger Jacobsville Sandstone (~1.0 Ga). Published bedrock geology maps with cross sections from the 1950s show the fault as a single continuous trace that is locally associated with smaller cross faults and splays. The accompanying cross-sections show hanging-wall volcanic strata having a well-defined, listric geometry with dip decreasing away from the fault to the northwest.

This M.S. thesis presents a structural analysis and interpretation of the …

Modeling Spatial Access To Healthcare, Yaxiong Shao

Graduate Research Theses & Dissertations

Health disparity has been a persistent concern in the United States, and the COVID-19 pandemic has brought more attention to this ongoing challenge. Improving access to healthcare is a crucial step toward achieving health equity and starts with accurately measuring and portraying the existing landscape of access to healthcare. Even though numerous spatial accessibility models have been proposed to measure the spatial accessibility to healthcare, many gaps still exist. The main purpose of this dissertation is to develop novel models and leverage recently available datasets for a more accurate portrayal of true spatial accessibility. Three models were developed to address …

Advancing Estuarine Shoreline Change Analysis Using Small Uncrewed Autonomous Systems, Thomas R. Allen, Devon Eulie, Mariko Polk, George Mcleod, Robert Stuart, Alexandra Garnand, A. J. Manning (Editor)

Political Science & Geography Faculty Publications

Estuarine shorelines face the threats of accelerating sea-level rise, recurrent storms, and disruptions of natural sediment and ecological adjustments owing to historic human interventions. The growing availability and technical capability of uncrewed systems (UxS), including remote or autonomous aerial and surface vessels, provide new opportunities to study and understand estuarine shoreline changes. This chapter assesses the state of the technology, interdisciplinary science and engineering literature, and presents case studies from the Chesapeake Bay, Virginia, and coastal North Carolina, USA, that demonstrate new insights into coastal geomorphic processes and applications to managing complex and dynamic estuarine shorelines. These technologies enhance the …

Comparison Of Water Column Properties Derived From An Autonomous Underwater Vehicle And Satellite Based Sources In Lake Michigan, David Bennion

Master's Theses and Doctoral Dissertations

Autonomous underwater vehicles (AUVs) are an emerging technology increasingly being employed in geoscience and ecosystem research in the Great Lakes, capitalizing on their ability to sample large areas fitted with a variety of sensors. Previous to AUV use, chlorophyll measurements were either collected at discrete locations accessed by boats or derived from satellite remote sensing data. An advantage of AUVs is the ability to detect the presence of subsurface formations such as a deep chlorophyll layer or directly measure features such as the extent of the photic zone, which provides the opportunity to compare these in situ measured features to …

Using Gis To Better Understand The Cracker Community Of Pat's Island In The Ocala National Forest, Florida, Nicholas Kopp

Electronic Theses and Dissertations, 2020-

This research uses GIS methods to contextualize a Florida Cracker community in the Ocala National Forest. My case study is drawn from two seasons of fieldwork and supporting desktop surveys associated with Pat's Island, the home of multiple Cracker families. Cracker culture is historically categorized by its efforts to avoid modernization and prevent the commercialization of traditional lifeways in the quickly shifting society of late-19th and early 20th-century Florida. The geospatial expressions of these Cracker values are an emphasis on semi-remote living, adaptations to a unique environmental context, and the development of a semi-self-sufficient community. This research evaluates how GIS …