Geography Commons^™

Nasa’S Ecostress Satellite Reveals Widespread Midday Depression In Ecosystem Evapotranspiration, Jingyi Bu, Jingfeng Xiao, Joshua B. Fisher, Yiqi Luo

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Plants often exhibit a midday depression in water use (i.e., transpiration), reflecting a constraint on their ability to sustain maximum water transport, which may occur at the cost of reduced photosynthesis. Eddy covariance observations and geostationary satellites cannot quantify this widespread phenomenon globally while resolving fine-scale spatial variability. Using evapotranspiration measurements from the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) and machine learning, we quantify the global distribution of midday depression in evapotranspiration. Midday depression primarily occurs during peak-growing seasons in temperate zones and dry periods in the tropics, with a morning shift of the peak evapotranspiration time …

Blue Space As Amenity And Disamenity: Disparity In Interstitial Water Bodies, Mara Pirone

Geography Honors Projects

Access to environmental amenities is distributed unevenly across urban areas, often due to discriminatory institutional practices such as redlining and racial covenants. Urban blue spaces (lakes, streams, rivers) can serve as either an environmental amenity or dis-amenity, depending on development and investment strategies. This paper explores how institutional racism, measured by variables such as historic redlining and racial covenant practices, shapes access to blue space as an amenity in the Twin Cities. Our results show that access to large, well-maintained, and well-invested blue space is distributed unevenly. Studying this relationship shows how cities continue to promote environmental injustice in interstitial …

Covid-19, Politicization, And Vaccine Hesitancy: A Spatiotemporal Analysis Of Non-Medical Exemptions In Minnesota, 2014-2024, Benjamin Arnold

Geography Honors Projects

Vaccination rates have declined due to the growing hesitancy by many parents to vaccinate their children, signified by an increasing amount of non-medical exemptions. While there has been previous spatial analysis of exemption patterns as a threat to herd immunity, there has not been much post-COVID. This analysis provides a modern analysis of changing exemption clustering in Minnesota, while also considering the impact of public health being increasingly politicized. We used kindergarten vaccination data for 1475 elementary schools to analyze the evolution of clustering and predictors of NMEs across space and time in Minnesota, from 2014 to 2024.

Largest Generations In The Mountain West States, 2024, Anirudh Polagani, Kian Parikh, Mohit Pande, Sean Curry, Kristian Thymianos, Olivia K. Cheche, Caitlin J. Saladino, William E. Brown Jr.

Demography

This fact sheet presents population data by generation and by state, identifying which generation represents the largest share of the population in Mountain West states. The data are derived from the Brookings Institution report, "Baby boomers are turning 80: A closer look at the generation that reshaped America," by William Frey. This fact sheet compares the 2024 population of each generation, from Pre-Baby Boom to Gen Alpha, to identify the largest generation in each of the five Mountain West states: Arizona, Colorado, Nevada, New Mexico, and Utah.

“Turn The Faucet”: Right-Wing Hydrosocial Imaginaries Of Irrigation Water In The Western United States, Alexander Reid Ross, Thien-Kim Bui, Alida Cantor

Geography Faculty Publications and Presentations

The second administration of United States President Donald Trump has taken an authoritarian, centralized approach to governance in the United States. Water management is one area in which the president has attempted to show dominance. This research theorizes President Trump’s concept of water in the United States West as a “hydrosocial imaginary” in which the release of water from rivers and reservoirs indicates virility, action, and power, instead of liberal cautiousness and prudence. By ordering the release of two billion gallons of water from California’s Central Valley into the dry Tulare Basin one hundred miles north of Los Angeles for …

Contrasting Coastal Dune Environments In Chile, Aurora Christianson

Discovery Day - Daytona Beach

Emerging coastalization and urbanization threats to the prehistoric Concón Dunes and Humedal de Mantagua coastal area of Chile is being investigated by researchers via uncrewed aircraft systems (UAS) in "Contrasting Coastal Dune Environments in Chile." Four UAS were utilized: Anzu Raptor T, DJI Mavic 3E, DJI Mavic 3M, and DJI Air 3 to collect various images of the coastal dunes. Multispectral and RGB cameras gather images by photogrammetry to create orthomosaics and monitor vegetation indexes in Pix4Dmapper. Thermal cameras provided images in rainbow, white hot infrared, and black hot infrared schemes to monitor wildlife and vegetation. The normalized difference vegetation …

Evaluating The Impact Of Ai-Assisted Tools On Novice Interface Design For Combat Search And Rescue Operations, Louis Pandolfo, Kaylee H. Akerlund, Cassidi Ellison, Sierra Martinez

Discovery Day - Daytona Beach

Combat Search and Rescue (CSAR) operations are specialized military missions with the goal of rescuing personnel from hostile territory, often involving helicopters and elite teams tasked with locating and stabilizing survivors. It is imperative to a mission's success that any interface used by rescuers is efficient and usable, as they work under high risk, high stress, and time limited conditions. This study examined how access to artificial intelligence (AI) design tools influence novice interface design under a time constraint. Participants completed an interface design exercise based on a simulated U.S. Navy maritime disaster and CSAR mission. The overall aim of …

Drug Seizures, Entry Points, And Social Vulnerability In The Us, Taryn Eddy

Discovery Day - Daytona Beach

Drug trafficking into the United States remains a significant homeland security challenge, shaped by transportation infrastructure, border dynamics, and community vulnerability. This study conducts a spatial analysis of U.S. Customs and Border Protection (CBP) drug seizure activity in relation to major transportation entry points and county-level social vulnerability. Using ArcGIS Pro, drug seizure data are mapped by CBP Field Office and overlaid with key infrastructure layers, including land ports of entry, international airports, seaports, and interstate highway corridors. County-level Social Vulnerability Index (SVI) data from the CDC/ATSDR are incorporated to assess whether areas experiencing high seizure activity are also characterized …

Automated Classification, Measurement, And Semantic Segmentation Of Open-Web Joists From Point Cloud Data, Justin Raymond Dworacek

Theses and Dissertations

This thesis presents a BIM-oriented methodology for the automated classification, measurement, and segmentation of structural trusses from point cloud data. A real truss point cloud and a complementary synthetic dataset derived from CADBIM Revit families were used to develop and evaluate the workflow. Classification was performed using a rule-based Python algorithm based on principal component analysis, side-view feature extraction, and family-specific geometric decision logic, while a separate family-aware script was used to extract key truss dimensions. Semantic segmentation was evaluated using a PointTransformerV3 model to separate truss and non-truss points in mixed point cloud scenes. The results demonstrated strong performance …

Mountain Development In Nepal: Settlements, Infrastructure, And Economic Transformation, Keshav Bhattarai, Ambika P. Adhikari

Himalayan Research Papers Archive

As Nepal urbanizes, expands infrastructure, strengthens local governments, and explores deeper connectivity with India and China, climate change is increasing floods, landslides, heat, and water insecurity. Rapid internal migration, rising disaster risks, youth outmigration, and dependence on remittances are also revealing the limits of conventional urban development, especially in the mountainous region. The central challenge for Nepal is no longer just to accommodate growing towns and cities, but to build settlements that are safe, productive, environmentally resilient, and capable of sustaining long-term prosperity.

This paper argues that Nepal's urban future must be guided by a new development paradigm centered on …

Waterfront Ecologies: Coastal Resilience And Urbanization In Cali-Baja Region, Agniya Seliuzhytskaya

McNair Summer Research Program

This research contributes to “Waterfront Ecologies,” a binational initiative addressing urbanization and climate change along the San Diego-Tijuana coastal area and watershed systems. By examining the threshold between land and water, this paper investigates the impacts of sea-level rise, coastal erosion, watershed contamination, and rapid urban development. The study employs a case-study methodology focused on coastal conditions within the Cali-Baja region. Through this framework, it reviews planning history, environmental reports, and past precedent studies. Methodologically, the project produces analytical drawings and comprehensive base maps that synthesize regional environmental systems, urban patterns, topography, hydrology, and infrastructure.

Preliminary findings reveal that post-colonial …

Mono Gold: An Informal Account Of The Geology, Production, And History Of Mono County Gold And Silver Mining Districts, D. D. Trent

Eastern Sierra History Journal

Mono Gold explores the mining production, technology, and history of the Eastern Sierra, with a special focus on Mono County. Author Dee Trent, a geologist, spent decades visiting, researching, and photographing each of the mining operations discussed in this book-length monograph.

Using A Social-Ecological-Technological Systems Approach For Assessing Vulnerabilities Downstream Of Dams, Michael J. Englert

All Graduate Reports and Creative Projects, Fall 2023 to Present

Dam failure is rare, but when it occurs the consequences can extend far beyond the structure of the dam itself. This project assessed vulnerabilities downstream of Utah’s 189 state-regulated, high-hazard dams using a Social-Ecological-Technological Systems (SETS) approach. The purpose of the project was to look beyond engineering and structural risk alone and identify the people, protected ecosystems, critical infrastructure, and land cover types located within mapped dam inundation zones.

Potential inundation zone maps were obtained from the Utah Division of Water Rights Dam Safety Section. They were processed using ArcGIS Pro and integrated with publicly available nationwide geospatial datasets to …

A Novel Edge-Based Accuracy Assessment Framework For Target Detection From Remotely Sensed Images, Yingfan Zhang, Weiyi Hou, Lyndon Estes, Rui Lu, Shijie Zhu, Aiyin Zhang, Zhou Shi, Su Ye

Geography

Accuracy assessment is critical for evaluating map quality and improving algorithms for target detection in remotely sensed images. Traditional methods for assessing a target-detection task were often performed by estimating the relative pixels of correct and incorrect identifications (e.g., F1 score). However, this approach only considers the pixel-by-pixel agreement and ignores important aspects of positional errors and target object quality. To provide comprehensive diagnostic information, we propose a novel edge-based accuracy assessment framework. This framework firstly applied a newly proposed assessment tool, Dynamic Epsilon-band Accuracy Function (DEAF), which is a linear fitting function from a series of edge accuracies associated …

Nasa Earth Exchange HawaiʻI Downscaled Climate Projections Cmip6 (Nex-Hidcp-Cmip6) Dataset, Bridget Thrasher, Ian Brosnan, Abby Frazier, Kristen Sanflippo, Matthew P. Lucas

Geography

Hawaiʻi’s complex topography, pronounced microclimates, and geographic isolation make coarse-scale global climate model output inadequate for local planning, and high-resolution climate projections tailored to the state have until now been lacking. To address this gap, we introduce the NASA Earth eXchange Hawaiʻi Downscaled Climate Projections CMIP6 (NEX-HIDCP-CMIP6), a new archive of downscaled historical and future climate projections based on output from Phase 6 of the Coupled Model Intercomparison Project (CMIP6) over the State of Hawaiʻi. The dataset covers the years 1950–2100 and includes three variables (maximum temperature, minimum temperature, and precipitation) from five CMIP6 experiments (the historical experiment and the …

Casual Killing In The Home: Ecological Citizenship And The Micro-Geopolitics Of Mosquito Cohabitation, Orlando Woods, Junxi Qian

Research Collection College of Integrative Studies

This article explores how the visceral acts of being bitten by and killing mosquitoes can underpin the formation of ecological citizenship. This form of citizenship is premised on human-nature entanglement and raises questions concerning how the rights and responsibilities stemming from such entanglement become distributed across the public and private domains. As a space in which mosquito cohabitation is contested daily, the home is a key site through which ecological citizenship can be forged and theoretical debates concerning urban political ecology can be extended. Human-mosquito entanglements in the home can reveal the limits of public pest management strategies, the partiality …

Community Efforts To Fulfill The Availability Of Green Open Space (Rth) Through Activities Urban Farming (Case Study: Rw 01, Rawasari Village, Johar Baru District, Central Jakarta Administrative City), Fajri Ananda Hade

Cities and Urban Development Journal

Background: The Special Capital Region (DKI) of Jakarta's achievements in the Global City indicators for environmental and sustainability aspects include meeting the availability of micro and macro scale green open spaces (RTH) to optimize space utilization. The need for RTH refers to Law No. 26 of 2007 concerning the availability of RTH with a percentage of 30%.

Aims: This study reviews community efforts to fulfill the availability of green open space through urban farming activities in the Central Jakarta Administrative City with a case study of the RW 01 area, Rawasari Village, Johar Baru District.

Methods: This research method …

Dynamic Analysis Of The Role Of Border Area Teachers In Implementing The Deep Learning Approach Through Visual Mapping Assisted By Cousal Loop Diagram (Cdl), Siprianus Jewarut, Usman Usman, Rikardus Sehajun, Pramatatya Resindra Widya

Jurnal Pendidikan Geografi: Kajian, Teori, dan Praktek dalam Bidang Pendidikan dan Ilmu Geografi

Bengkayang is one of the districts in Kalimantan Province. This regency is very special because it is located right on the border between Indonesia and Serikin Sarawak, Malaysia. The condition of the border area certainly leaves various challenges due to the area's location quite far from the city center and a fairly large area. This situation presents a very significant challenge in efforts to improve the quality of education and human resources of the community in the Bengkayang region. Based on the actual conditions in the field, various limitations were found, ranging from the lack of availability of educational facilities …

Climate Change And Desert Ecosystem Resilience: A Systematic Review Of Impacts, Adaptation Strategies, And Sustainability Pathways, Ghada Abd Elsattar Mohammed Oraby, Garmat Zahra

Jurnal Pendidikan Geografi: Kajian, Teori, dan Praktek dalam Bidang Pendidikan dan Ilmu Geografi

Desert ecosystems are among the most climate-sensitive environments on Earth, where rising temperatures, altered precipitation regimes, and increasing aridity threaten ecosystem stability, biodiversity, and ecological functioning. Despite covering more than one-third of the global land surface, a comprehensive understanding of how climate change affects desert ecosystem resilience and the effectiveness of adaptation strategies remains limited. This study conducted a systematic review following the PRISMA framework to evaluate the impacts of climate change on desert ecosystem resilience and to identify effective adaptation and restoration pathways. A total of 16 high-quality studies were selected from 403 records retrieved from the Scopus database. …

Trends And Directions Of Sustainable Halal Tourism Development: A Systematic Literature Review With Special Reference To Malaysia, Anna Mariana Zebua, Bayu Wijayanto, Dedi Hermon, Febriandi Febriandi, Rosmadi Fauzi

Jurnal Pendidikan Geografi: Kajian, Teori, dan Praktek dalam Bidang Pendidikan dan Ilmu Geografi

As an emerging sector in the global tourism industry, halal tourism is projected to inspire behavioral changes and policy strategies rooted in sustainability principles, particularly within faith-based communities and from the perspective of tourism geography in Malaysia. This study aims to identify research trends, analyze key sustainability determinants, and determine the direction of sustainable halal tourism development in Malaysia through a Systematic Literature Review (SLR) following PRISMA guidelines, screening 20 articles from Scopus, Google Scholar, and Web of Science (2020–2025). Findings reveal that halal tourism development is shaped by national policy integration, uniform certification systems, and strong institutional coordination. Sustainability …