Geography Commons^™

Spatial Temporal Patterns Of Us Landslides In Recent Decades And Climate Change, Karissa Duff

Graduate Research Theses & Dissertations

The frequency and intensity of extreme rainfall events are on the rise in recent decades around the world due to climate change and the trend is projected to continue. Intensified rainfall is a well-known trigger for landslide hazards. The impact of climate change on landslide hazards is a research question of practical importance, as landslides can cause billions of dollars in damage and significant loss of human lives annually. However, previous studies have often focused on specific events with limited spatial and temporal scales. Here we report our preliminary results of leveraging modern geospatial statistical tools in GIS using both …

Workable Seams, Jackson Mills Smith

Graduate Student Theses, Dissertations, & Professional Papers

In Jackson Mills Smith’s Workable Seams, readers encounter the stories, landscapes, and lives of rural Knox County, Indiana, from the oscillating vantage of a Hoosier boy raised with a Cajun sensibility. After relocating from Louisiana to the river bottoms of the crossroad state at a young age, the speaker gradually uncovers a local history only previously understood in fragmentary shards and fading glimpses.

Alternating between semi-lyrical embodied experiences and memories, documentary pieces in conversation with the state’s historical archive, and the retelling of exaggerated local yarns, poetry is a means of inquiry in Workable Seams. Topics range from …

Indigenous Access And Use On Private Land: A Toolkit For Heart Of The Rockies Land Trust Members, Ian James Craighead

Graduate Student Theses, Dissertations, & Professional Papers

No abstract provided.

Remote Sensing - Based Mapping And Analysis Of Winter Cover Crop Adoption For Sustainable Agriculture, Minnehaha County, Belinda Buechler

Electronic Theses and Dissertations

Winter cover crops planted by farmers such as cereal rye, crimson clover, radishes, hairy vetch, and winter wheat are used to conserve and protect the soil during winter. These crops offer numerous benefits such as improving soil health, reducing erosion, fixing nitrogen, increasing carbon sequestration, and weed suppression. Over time, winter cover cropping has been recognized as a sustainable agricultural practice and has gained attention from Federal and State conservation programs, farmers, and non-governmental organizations. Due to their vital benefits, agencies such as the United States Department of Agriculture (USDA), Natural Resources Conversation Services (NRCS) have partnered with cost-share programs …

Shifting Waters: A 41-Year Time-Series Analysis Of Surface Water Change In The Prairie Pothole Region, Madison Dejarlais

Electronic Theses and Dissertations

The Prairie Pothole Region (PRR) is a landscape defined by a dynamic surface water system, with wetlands, lakes, and rivers playing critical roles in supporting biodiversity, regulating floods, and maintaining hydrological balance. This study conducts a time-series analysis of surface water change in the PPR from 1984 to 2024, using remote sensing tools including Google Earth Engine, ArcGIS Pro, and ENVI. 41 annual surface water presence rasters were compiled into a cumulative dataset, allowing for both year-to-year comparisons and broader trend analysis. Results indicate that the presence of surface water in the PPR has not followed a simple linear trend. …

Multi-Source Remote Sensing–Based Soil Moisture Prediction Using Machine Learning, Niraj Neupane

Electronic Theses and Dissertations

Soil moisture (SM) plays a central role in climatic and environmental processes, influencing shear strength of soil, agricultural productivity, land–atmosphere interactions, and hydrologic functioning. However, accurately estimating SM across diverse climatic regions remains challenging due to spatial heterogeneity, limited in situ measurements, and inconsistencies in sensor resolution. Machine learning (ML) and remote sensing offer promising avenues for improving SM prediction, yet many existing approaches struggle with generalization across climatic gradients and often fail to capture temporal variability. This study integrates multi-source satellite and climate datasets, including SMAP L4_SM, MODIS land surface temperature, Daymet meteorological variables, and in situ observations from …

Family Roots And Research Journal Unm Emeritus Professor José A. Rivera, José A. Rivera Ph.D

Faculty Publications

This article is an abbreviated life narrative of UNM Emeritus Professor of Community and Regional Planning, José A. Rivera. It begins with highlights of his family ancestry and continues with an account of his educational experiences K-12 and into a decade of university life as a student while earning a bachelor’s, two master’s and a doctorate. He taught at UNM for 35 years while also conducting research in his areas of interest, mostly in community irrigation studies, mutual aid societies, and rural development. The main body in the article focuses on positions he held at UNM and on publications that …

Sports Facilities, Trails, And Travel Cost: A Non-Market Valuation Case Study Of Parks In Montana, Clemens Walter Wilson

Graduate Student Theses, Dissertations, & Professional Papers

This study applies the travel cost valuation method to urban parks in the State of Montana in an effort to determine whether parks with attributes related to exercise have greater value for recreationalists. By observing real recreation behaviour of urban park visitors through the use of cellphone mobility data, recreational demand for varying parks can be ascertained. To model recreational demand, the random utility model (RUM) and multinomial logit model (MNL) are leveraged to understand choice probabilities of parks, based on the attributes of parks, including sports facilities and trails. This study finds that there are positive and significant relationships …

Human-Bear Conflicts In Western Montana: Mapping Attractants And Prevention Efforts, Jessica Nichole Reyes

Graduate Student Theses, Dissertations, & Professional Papers

Human-bear conflicts (conflicts) are rising across North America, largely due to the expansion of the wildland-urban interface into bear habitat. These conflicts are driven by ecological and human factors, including habitat fragmentation, loss of natural food sources and the widespread availability of human-related attractants such as garbage, fruit trees, and bird feeders. While studies increasingly examine the ecological and spatial predictors of conflicts, fewer have explored how attractant types, land cover changes, and local geography shape conflict trends. Montana communities have long managed bear conflicts, but recent increases in incidents and human-caused bear mortalities—alongside expanding grizzly bear populations—have prompted growing …

Atmospheric Chemistry Experiment (Ace) V.5.3 Winds: Validation And Model Comparisons, Matthew Wyatt, Peter F. Bernath, Chris Boone, Leo Lavy, Ryan Johnson

Physics Faculty Publications

The Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) uses limb geometry to measure transmittance spectra of Earth's atmosphere by solar occultation. Line-of-sight wind speeds can be derived via Doppler shifts of molecular lines in infrared spectra. The wind look direction angles relative to geodetic north are derived from geometry. We validate the new ACE version 5.3 (v.5.3) line-of-sight winds with MIGHTI and meteor radar vector wind observations and find a -15 m s^-¹ (+15 m s^-¹) sunrise (sunset) shift above 80 km. We also compare line-of-sight winds from ACE-FTS v.5.2 and v.5.3 with vector winds from …

An Exploratory Study Of Ukrainian Refugee Resettlement Patterns And Education Resource Needs In Poland, Marta Gintowt

West Chester University Graduate Theses, Dissertations, and Final Projects

The ongoing Russian invasion of Ukraine that started in late February 2022 triggered a refugee crisis that reverberated throughout Europe. During the onset of the invasion, an estimated five million Ukrainian refugees, mostly women, children, and the elderly, fled to countries in Europe and beyond. Countries were not prepared for the magnitude of the initial influx of refugees, who are a vulnerable population who require specific immediate and long-term supports. As three years have passed since the start of the war, the needs of refugees have evolved, and resources providing educational support to refugee children have taken on increased importance. …

Streamlining Digital Elevation Model Construction From Historical Aerial Photographs: The Impact Of Reference Elevation Data On Spatial Accuracy, Xin Hong, Christopher H. Roosevelt

All Works

This study proposes a streamlined workflow for producing historical digital elevation models (hDEMs) from scanned 1950s aerial photographs using structure-from-motion and multi-view-stereo (SfM-MVS) techniques along with co-registration methods. We also conducted a sensitivity analysis to assess the impact of DEM references with varying spatial resolutions on the SfM-MVS process and co-registration accuracy. The DEM references included a 30 m SRTM DEM (low resolution), a 12 m TanDEM-X DEM (medium resolution), and a 5 m DEM provided by the General Directorate of Mapping of the Ministry of National Defense, Republic of T & uuml;rkiye (high resolution). Results indicate that higher resolution …

Earth Observations Reveal Impacts Of Climate Variability On Maize Cropping Systems In Sub-Saharan Africa, Adomas Liepa, Michael Thiel, Hannes Taubenböck, Doris Klein, Ingolf Steffan-Dewenter, Marcell K. Peters, Sarah Schönbrodt-Stitt, Insa Otte, Tobias Landmann, Zeyaur R. Khan, Michael Ochieng Obondo, Frank Chidawanyika, Emily A. Martin, Tobias Ullmann

All Peer-Reviewed Publications

In Kenya, climate variability and change threaten smallholder, rainfed farms, with crop failures, yield reductions, and pest infestations. Efficient agroecological strategies, such as Push-Pull intercropping, offer documented benefits including pest control, improved soil fertility, and water conservation compared to traditional maize monocropping. To date, no studies exist comparing traditional maize monocropping and Push-Pull intercropping using earth observation tools over several growing seasons in East Africa. Our research addresses this by harmonizing Landsat 7, 8, 9 with Sentinel-2 remote sensing time series from 2016 to 2023. Phenological metrics of 15 growing seasons are extracted based on a threshold method using the …

Annual Diversity Of Honey Bee Pollen Sources In Two Pumpkin Growing Landscapes, Machakos County, Kenya, Marystella W. Nang’Oni, Muo Kasina, Rebecca Karanja, Mary M. Guantai, Rahab N. Kinyanjui, Evanson R. Omuse, Michael H.G. Lattorff, Elfatih M. Abdel-Rahman, Marian Adan, Samira A. Mohamed, Thomas Dubois

All Peer-Reviewed Publications

Multi-floral foraging sources for honey bee (Apis mellifera L.) have been threatened by landscape changes and unsustainable farming practices. In East Africa, the biodiversity of forage resources that could support honey bees, especially in agricultural lands, remains least explored. This study investigated pollen diversity for honey bees in Yatta and Masinga Sub-counties in Machakos County, Kenya. Honey bee hives were installed on eight pumpkin (Cucurbita maxima Duchesne ex Lam) farms (one hive per farm) in two varying landscape vegetation classes (low and medium) based on normalized difference vegetation index (NDVI). Pollen traps were installed at the hive entrance and pollen …

Land Target Detection Algorithm In Remote Sensing Images Based On Deep Learning, Wenyi Hu, Xiaomeng Jiang, Jiawei Tian, Shitong Ye, Shan Liu

Electrical & Computer Engineering Faculty Publications

Remote sensing technology plays a crucial role across various sectors, such as meteorological monitoring, city planning, and natural resource exploration. A critical aspect of remote sensing image analysis is land target detection, which involves identifying and classifying land-based objects within satellite or aerial imagery. However, despite advancements in both traditional detection methods and deep-learning-based approaches, detecting land targets remains challenging, especially when dealing with small and rotated objects that are difficult to distinguish. To address these challenges, this study introduces an enhanced model, YOLOv5s-CACSD, which builds upon the YOLOv5s framework. Our model integrates the channel attention (CA) mechanism, CARAFE, and …

Landscapes Of State Capitalism: Reconciling The Vernacular, National Development Imaginaries, And Green Capital Accumulation, Sol Andrew Stokols

Research Collection College of Integrative Studies

This article theorizes ‘state capitalist landscapes’ as a unique spatial form shaped by state-owned developers that reconcile economic goals with national development imperatives and symbolic national imaginaries. State capitalist landscapes, I argue, integrate economically productive spaces with natural spaces to symbolize imaginaries of the nation. Through an inductive case study methodology, this article surveys three industrial zones developed and/or under development by state owned developers: Singapore's Jurong, China's Xiong’an New Area, and Thailand's Wangchan Valley. In each of these cases, natural landscapes are integrated into new economic zones in order to construct specific symbolic and/or political imaginaries of the nation: …

Art/Place Making In A Settler Colonial Context: A Critical Place Inquiry On The Haldimand Tract/Kitchener-Waterloo From A White Settler Perspective, Haley Sheppard

Theses and Dissertations (Comprehensive)

Although critical place scholars implicate artists in settler colonial processes of placemaking, there is little information on how white settler artists (WSAs) might use their creative practice to support practices of accountability and solidarity with Indigenous resurgence. This research responds to this gap by investigating the creative practices of WSAs located on the Haldimand Tract/in Kitchener-Waterloo (KW), and how they might approach critical, contextual practices in their creative work. A critical place inquiry was combined with ethnographic research principles and a transformative critical research paradigm. Six WSAs participated in mobile interviews, which took place in a location significant to them. …

Operationalizing Intersectionality Analysis For Urban Agriculture In Quito, Ecuador, Laine N. Young

Theses and Dissertations (Comprehensive)

This thesis outlines the results of a case study in Quito, Ecuador with the municipally led participatory urban agriculture project, AGRUPAR, an internationally recognized project that promotes women’s empowerment, traditional knowledge, agroecology, and livelihoods. It works to improve the lives of those experiencing high levels of poverty in Quito. This dissertation applies an intersectional analysis to urban agriculture research to enhance attention to power relations, social justice, and equity within its scholarly and practical realms. Intersectionality is an understanding that people have unique experiences of oppression based on their unique social location (what intersecting social categories they belong to) and …

Nature For All? Assessing Equitable Public Access To National Urban Parks In Canada: A Comparative Analysis, Andrew Tenute

Theses and Dissertations (Comprehensive)

The number of health challenges is rising both globally and in Canada. Research consistently shows that time spent in nature can mitigate some of these health challenges, offering significant mental, physical, and well-being benefits. Parks and protected areas in Canada, including the expansion of the National Urban Park (NUP) program by Parks Canada, provide valuable opportunities for nature-based engagement. However, access to these spaces is unjust, as many individuals face structural, intrapersonal, and interpersonal constraints. While prior studies have explored the motivations and well-being outcomes of women and Black, Indigenous, and People of Colour (BIPOC) individuals, there remains a limited …

Integrating Indigenous Values And Community Strengths To Achieve Indigenous Food Sovereignty And Community Well-Being In The Ka’A’Gee Tu First Nation, Northwest Territories, Jennifer K. Temmer

Theses and Dissertations (Comprehensive)

Northern Indigenous communities face disproportionate impacts from interconnected challenges related to climate change, food security, health, and cultural preservation, that threaten traditional food systems and practices. While there is a growing recognition of the importance of community-driven solutions, existing frameworks fail to integrate Indigenous values and local priorities effectively. This research addresses this gap by exploring how the Ka’a’gee Tu First Nation (KTFN) is responding to these crises through climate change adaptation efforts focused on food system sustainability as a pathway to self-sufficiency and community well-being. To contribute to these efforts, this dissertation uses Participatory Action Research to facilitate community-driven …

Coupling Remote Sensing And Modelling To Monitor The Spatial Distribution And Trends Of Surface Temperature And Ice Thickness On Sub-Arctic Lakes, Gifty Attiah

Theses and Dissertations (Comprehensive)

Lake surface temperature (LST), lake ice thickness (LIT), and lake ice phenology (LIP) play significant roles in the diverse regional processes of freshwater in cold regions. They offer direct indications of regional weather and climate conditions, and their interactions with the atmosphere impact climate processes. Furthermore, lake ice is valuable to northern communities, such as those in the Northwest Territories (NWT). Ice roads, including the longest ice road in the NWT, spanning over 80 lakes, are constructed during winter to haul goods to and from industrial establishments (e.g., mines) and for travel within and between communities. A significant challenge to …

Co-Creation, Interpretations And Engagement With A Movement-Based Symbol For Climate Justice: A Qualitative Inquiry, Kai Reimer-Watts

Theses and Dissertations (Comprehensive)

The climate crisis demonstrates with complete clarity the need for massive systems-level changes towards far more sustainable societies. Global and local emissions need to decline rapidly to mitigate intensifying climate breakdown, accompanied by climate and sustainability solutions, to secure a far more stable, safe, and just future for all people and all life. Within these changes, engaging in our communities is essential to support and co-create broader solutions to help advance more sustainable societies, reduce negative impacts of a changing climate, and to move towards cultures and systems that recognize natural limits and centre care for people and planet.

‘Climate …

South-South Migration: Examining The Links Between Food Security And Migration From Ghana To Qatar, Bernard Owusu

Theses and Dissertations (Comprehensive)

This dissertation contributes to the migration-development literature by integrating food security into the analysis of South-South migration. While migration and development have been extensively studied, the connection between migration and food security remains underexplored, particularly in South-South migration contexts. The dissertation highlights the role of migration as both a coping strategy for food insecurity and a source of vulnerability for migrants in the specific context of temporary labour migration between Ghana and Qatar. Addressing this gap, the research examines how migration decisions are influenced by food insecurity in Ghana, the food security challenges faced by Ghanaian migrants in Qatar, and …

From The Intimate, Regional To The Global: Examining The Indian International Student Migration To Canada, Neil Amber Judge

Theses and Dissertations (Comprehensive)

This dissertation examines Indian international student migration to Canada focusing on students from the north Indian state of Punjab, a region with extensive history of migration and transnational social ties to Canada. Punjab has historically been the predominant sending region within India to Canada, and which continues to dominate in the present phase of international student migration to Canada. The pursuit of higher education has become particularly popular in Punjab. Furthermore, Canada has recently emerged as a significant international study destination following its international education strategy aimed to attract and increase the number of international students. The study employs qualitative …

Factors Contributing To Fatalities In Helicopter Emergency Medical Service Accidents, Jenna Korentsides, Joseph R. Keebler, Mihhail Berezovski, Alex Chaparro

Publications

INTRODUCTION: T his study aimed to update and reinforce previous research on helicopter emergency medical service accidents in the United States. By investigating predictors of fatalities after helicopter emergency medical service crashes through the application of machine learning techniques, we updated existing data sets and sought to uncover patterns that traditional analysis might not reveal.

METHODS: Using the National Transportation Safety Board database, the authors analyzed a dataset of 267 helicopter emergency medical service accidents between 1991–2022. We first calculated fatalities odds ratios for each condition. We then plotted geospatial locations of all reported accidents. Finally, we used XGBoost regression …

Ensemble Machine Learning Approaches For Bathymetry Estimation In Multi-Spectral Images, Kazi A. Islam, Omar Abdul-Hassan, Hongfang Zhang, Victoria Hill, Blake Schaeffer, Richard Zimmerman, Jiang Li

OES Faculty Publications

Traditional bathymetry measures require a large number of human hours, and many bathymetry records are obsolete or missing. Automated measures of bathymetry would reduce costs and increase accessibility for research and applications. In this paper, we optimized a recent machine learning model, named CatBoostOpt, to estimate bathymetry based on high-resolution WorldView-2 (WV-2) multi-spectral optical satellite images. CatBoostOpt was demonstrated across the Florida Big Bend coastline, where the model learned correlations between in situ sound Navigation and Ranging (Sonar) bathymetry measurements and the corresponding multi-spectral reflectance values in WV-2 images to map bathymetry. We evaluated three different feature transformations as inputs …

High Antarctic Coastal Productivity In Polynyas Revealed By Considering Remote Sensing Ice-Adjacency Effects, Hilde Oliver, Jessica S. Turner, Alexandre Castagna, Henry Houskeeper, Heidi Dierssen

OES Faculty Publications

Ocean color-based estimates of Antarctic net primary productivity (NPP) have indicated low nearshore productivity in ice-adjacent waters, contrasting with coupled physical–biogeochemical models. To understand this discrepancy, we assessed satellite records of polynya NPP by comparing field data with two satellite imagery datasets derived using different processing schemes. Our results indicate historical underestimation of chlorophyll a for imagery obtained using default atmospheric correction processing within approximately 100 km of ice-covered coastlines due to adjacency effects. Using radiative transfer modeling, we find that biases in ocean color polynya observations due to adjacency effects correspond to the high albedo of ice and snow. …

Statement From The Indiana Academy Of The Social Sciences And Board Of Directors

Midwest Social Sciences Journal

No abstract provided.

In Memoriam: Bruce Bigelow, 1943 - 2025, Kenneth Colburn

Midwest Social Sciences Journal

No abstract provided.

Editor-In-Chief's Note, Surekha Rao

Midwest Social Sciences Journal

No abstract provided.