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2023

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Articles 541 - 570 of 574

Full-Text Articles in Geography

Mapping Landcover Change And Population Displacement Of Lakshmipur District, Bangladesh Due To Riverbank Erosion From 2001-2021: A Geospatial Approach, Israt Jahan Jan 2023

Mapping Landcover Change And Population Displacement Of Lakshmipur District, Bangladesh Due To Riverbank Erosion From 2001-2021: A Geospatial Approach, Israt Jahan

College of Graduate Studies: Theses & Dissertations

Due to the geographical setting, the Lakshmipur district of Bangladesh experiences adverse effects of global climate change that include but are not limited to natural disasters such as tropical cyclones, storm surges, coastal flooding, and riverbank erosion. While riverbank erosion is an implicit impact of climate change, it directly affects human settlements, agricultural activity, and the overall livelihoods of people in this area. Examining the spatiotemporal changes in land cover and population due to riverbank erosion in this region could help us better understand the dynamics of human-environmental relations. This study aimed to classify land cover for every five years …


The Influence Of Urban Forms And Street Infrastructure On Pedestrian-Motorist Collisions, Taylor J. Foreman Jan 2023

The Influence Of Urban Forms And Street Infrastructure On Pedestrian-Motorist Collisions, Taylor J. Foreman

College of Graduate Studies: Theses & Dissertations

Unwalkable cities are afflicted by serious issues such as increasing rates of pedestrian traffic accidents, public health concerns, and the denied right to have an accessible city. This study examines how different types of urban forms and street infrastructure contribute to the prevalence of traffic accidents in two major metropolitan cities in the United States: Atlanta, Georgia, and Boston, Massachusetts. This study utilizes geospatial analysis through the Average Nearest Neighbor and Optimized Hot Spot Analysis tools to determine the spatial distribution of traffic accidents throughout both cities. Additionally, statistical tests were conducted to explore the relationships between the number of …


Reflections On A Career Unplanned, Robert A. Glazer Jan 2023

Reflections On A Career Unplanned, Robert A. Glazer

Gulf and Caribbean Research

Sometimes life takes unexpected turns. I never planned to be a marine biologist; yet, after a long and unpredictable journey, that’s exactly where I found myself. After obtaining my B.S. in Fishery Biology from Colorado State University, I found myself meandering from job to job like a golden retriever following some vague scent. At first, I was hired by the Wyoming Game and Fish Department to work seasonally in Grand Teton National Park on the freshwater trout fisheries. Soon thereafter, I found myself cultivating oysters, clams, and other shellfish in California. The skills I developed there as an algologist led …


Feasibility Of Earthships As Sustainable Homes In Brookings County, South Dakota, Whitney Sunkwah Yeboah Jan 2023

Feasibility Of Earthships As Sustainable Homes In Brookings County, South Dakota, Whitney Sunkwah Yeboah

Electronic Theses and Dissertations

Addressing the issue of housing deficit while providing affordable and sustainable homes is a significant problem in the United States today. This has prompted architects to design homes with less adverse environmental impacts despite their affordability, hence the birth of sustainable housing. Earthships are sustainable homes built from recycled materials, utilize solar or wind energy, and function as self-sufficient units. The study's main aim is to assess residents' perceptions of earthships and their willingness to adopt earthships in Brookings County, South Dakota. The research employs online surveys to garner data from residents, and data are analyzed using mixed methods. Results …


Airport Ground Access Choice Between Transportation Network Companies And Parking: A Case Study Of Hartsfield-Jackson Atlanta International Airport, Sen Wang, Yichen Zheng, Yi Gao Jan 2023

Airport Ground Access Choice Between Transportation Network Companies And Parking: A Case Study Of Hartsfield-Jackson Atlanta International Airport, Sen Wang, Yichen Zheng, Yi Gao

International Journal of Aviation, Aeronautics, and Aerospace

The segment between home and airports is an essential component in all air transportation trips. Travelers normally have different ground access options to commence their journeys. Using Hartsfield-Jackson Atlanta International Airport as a special case, this study proposes a theoretical framework for quantifying and comparing the overall cost of driving and parking at airport and the use of Transportation Network Companies (TNCs) ridesharing services such as Uber. Based on the cost comparison, we design an interactive web application to visualize the utility advantage area and summarize the corresponding demographic information. Our study has the potential to benefit airports, TNC operators, …


Assessing The Impact Of The Yellowstone Tv Series On Montana's Tourism Economy, Patrick Barkey, Melissa Weddell Jan 2023

Assessing The Impact Of The Yellowstone Tv Series On Montana's Tourism Economy, Patrick Barkey, Melissa Weddell

Institute for Tourism and Recreation Research Publications

The hugely successful and popular dramatic television show Yellowstone, which portrays the fictional Dutton family ranch in Montana, has sparked the interest of a worldwide audience in our state. In addition to its critical and commercial success, the show has emerged as a significant factor in the marketing of Montana, with its more than 10 million viewers treated to storylines, characters and scenery of the mountain west. How has the show’s success affected the arrival and subsequent spending of visitors to the state? A new study jointly produced by the Bureau of Business and Economic Research (BBER) and the Institute …


A Comprehensive Satellite-Based Assessment Across The Pacific Arctic Distributed Biological Observatory Shows Widespread Late-Season Sea Surface Warming And Sea Ice Declines With Significant Influences On Primary Productivity, Karen E. Frey, Josefino C. Comiso, Larry V. Stock, Luisa N C Young, Lee W. Cooper, Jacqueline M. Grebmeier Jan 2023

A Comprehensive Satellite-Based Assessment Across The Pacific Arctic Distributed Biological Observatory Shows Widespread Late-Season Sea Surface Warming And Sea Ice Declines With Significant Influences On Primary Productivity, Karen E. Frey, Josefino C. Comiso, Larry V. Stock, Luisa N C Young, Lee W. Cooper, Jacqueline M. Grebmeier

Geography

Massive declines in sea ice cover and widespread warming seawaters across the Pacific Arctic region over the past several decades have resulted in profound shifts in marine ecosystems that have cascaded throughout all trophic levels. The Distributed Biological Observatory (DBO) provides sampling infrastructure for a latitudinal gradient of biological "hotspot" regions across the Pacific Arctic region, with eight sites spanning the northern Bering, Chukchi, and Beaufort Seas. The purpose of this study is two-fold: (a) to provide an assessment of satellite-based environmental variables for the eight DBO sites (including sea surface temperature (SST), sea ice concentration, annual sea ice persistence …


Four Fundamental Questions To Evaluate Land Change Models With An Illustration Of A Cellular Automata–Markov Model, Cláudia M. Viana, Robert Gilmore Pontius, Jorge Rocha Jan 2023

Four Fundamental Questions To Evaluate Land Change Models With An Illustration Of A Cellular Automata–Markov Model, Cláudia M. Viana, Robert Gilmore Pontius, Jorge Rocha

Geography

Numerous models exist for users to simulate land change to communicate with an audience concerning future land change. This article raises four fundamental questions to help model users decide whether to use any model: (1) Can the user understand the model? (2) Can the audience understand the model? (3) Can the user control the model? (4) Does the model address the goals of the specific application? This article applies these questions to the popular cellular automata–Markov (CA–Markov) model as IDRISI’s CA–Markov module expresses. Sensitivity analysis examines 120 ways to set the module’s parameters. Verification compares the module’s behavior to the …


Situational Analysis And Urban Theory, Mark Davidson Jan 2023

Situational Analysis And Urban Theory, Mark Davidson

Geography

Urban geographers have been pursuing divergent theoretical projects. Some have pushed urban theory to become ageographical, the goal being to search out and explain of a globally omnipotent urbanization process. Others have moved in a different direction, seeking to detail how singular constellations of processes produce only particular urban places. This theoretical divergence has led some to question whether middle-range urban theories continue to have purchase today. This paper seeks to contribute to this attempt to rekindle an interest in middle-range urban theory by examining the relevance of Karl Popper’s situational analysis to how we understand contemporary urbanization. © The …


Carnivore And Ungulate Occurrence In A Fire-Prone Region, Sara J. Moriarty-Graves Jan 2023

Carnivore And Ungulate Occurrence In A Fire-Prone Region, Sara J. Moriarty-Graves

Cal Poly Humboldt theses and projects

Increasing fire size and severity in the western United States causes changes to ecosystems, species’ habitat use, and interspecific interactions. Wide-ranging carnivore and ungulate mammalian species and their interactions may be influenced by an increase in fire activity in northern California. Depending on the fire characteristics, ungulates may benefit from burned habitat due to an increase in forage availability, while carnivore species may be differentially impacted, but ultimately driven by bottom-up processes from a shift in prey availability. I used a three-step approach to estimate the single-species occupancy of four large mammal species: mountain lion (Puma concolor), coyote …


Toxic Timescapes: Examining Toxicity Across Time And Space, Simone M. Müller, May-Brith Ohman Nielsen Jan 2023

Toxic Timescapes: Examining Toxicity Across Time And Space, Simone M. Müller, May-Brith Ohman Nielsen

Ohio University Press Open Access Books

An interdisciplinary environmental humanities volume that explores human-environment relationships on our permanently polluted planet.

While toxicity and pollution are ever present in modern daily life, politicians, juridical systems, media outlets, scholars, and the public alike show great difficulty in detecting, defining, monitoring, or generally coming to terms with them. This volume’s contributors argue that the source of this difficulty lies in the struggle to make sense of the intersecting temporal and spatial scales working on the human and more-than-human body, while continuing to acknowledge race, class, and gender in terms of global environmental justice and social inequality.

The term toxic …


Artistic Engagement With Monadnock: A Hermeneutic Phenomenological Study, Jonathan W. Coffin Jan 2023

Artistic Engagement With Monadnock: A Hermeneutic Phenomenological Study, Jonathan W. Coffin

Antioch University Dissertations & Theses

This hermeneutic phenomenological study discloses the lived experience of creating art in association with New Hampshire’s Mount Monadnock. This study reveals the potential for artistic invention in association with place gradually to undermine an established sense of separation from environment and to prompt conscious awareness of continuity with environment. A series of interviews with four artists who create art of or in the presence of Monadnock revealed in the lived experience of creating Monadnock art a process that consists of five phases: first encounter, abstract appreciation, existential understanding, sustained attention, and continuity. A hermeneutic circular method of interpretation based upon …


Children Tell Landscape-Lore Among Perceptions Of Place: Relating Ecocultural Digital Stories In A Conscientizing/Decolonizing Exploration, Meredith Jean Bird Miller Jan 2023

Children Tell Landscape-Lore Among Perceptions Of Place: Relating Ecocultural Digital Stories In A Conscientizing/Decolonizing Exploration, Meredith Jean Bird Miller

Antioch University Dissertations & Theses

We know that when children feel a sense-of-relation within local natural environments, they are more prone to feel concern for them, while nurturing well-being and resilience in themselves and in lands/waters they inhabit. Positive environmental behaviors often follow into adulthood. Our human capacities for creating sustainable solutions in response to growing repercussions of global warming and climate change may grow if more children feel a sense of belonging in the wild natural world. As educators, if we listen to and learn from students’ voices about how they engage in nature, we can create pedagogical experiences directly relevant to their lives. …


Nannies And Public Space: Reproductive Labor In Richmond, Va, Hannah D. Woehrle Jan 2023

Nannies And Public Space: Reproductive Labor In Richmond, Va, Hannah D. Woehrle

Theses and Dissertations

In the realm of urban planning, the gendered and spatial dynamics of childcare as a field of labor have been historically overlooked. This thesis addresses this gap by examining the geographies shaped by nannies in Richmond, VA, and their implications for urban planning in the context of the evolving neoliberal "new" economy. Existing research focuses on the geographies of children and burgeoning sectors of gig work in the neoliberal city. This study positions itself at the intersection of these areas, focusing on nannies as long standing gig workers within the childcare network, uniquely positioned to be affected by economic transitions. …


Embodying Arts Festivals As Infrastructural Transformation Of Places, Bernadette Quinn Jan 2023

Embodying Arts Festivals As Infrastructural Transformation Of Places, Bernadette Quinn

Books/Book chapters

Arts festivals are important forms of cultural production and consumption (Négrier 2015). Irrespective of genre (e.g., visual arts, music or film) and whether single or multidisciplinary, their primary endeavour is to engage people in the making, showcasing and performance of art. Yet arts festivals do not necessarily receive recognition or attention based on their cultural attributes alone. Festivals and events have become “central to entrepreneurial cities’ efforts to generate commerce, regenerate place and stand out on the highly competitive global stage” (Quinn et al. 2020, 1875). Along with arts and cultural activities more generally, recent decades have seen cities use …


Playing From The Edge: Music Festivals And Broadcasting Practices In The West Cork Region Of Ireland, Enya Moore Dr., Bernadette Quinn, Brian Vaughan Dr Jan 2023

Playing From The Edge: Music Festivals And Broadcasting Practices In The West Cork Region Of Ireland, Enya Moore Dr., Bernadette Quinn, Brian Vaughan Dr

Presentations

A study of arts festivals' experiences of adopting digital practices in the period 2020-2022. The context is rural and the qualitative data were gathered in West Cork in the south west of Ireland.


Understanding Visitor Recreation Experiences On Montana's Public Lands, Kara Grau, Megan Schultz, Glenna Brown, Melissa Weddell Jan 2023

Understanding Visitor Recreation Experiences On Montana's Public Lands, Kara Grau, Megan Schultz, Glenna Brown, Melissa Weddell

Institute for Tourism and Recreation Research Publications

The grandeur of Montana’s public lands attracts visitors from all over the world who want to experience the beautiful parks, wilderness, wildlife, and waters. Montana is ranked 10th in the nation in federal land ownership, with about 30% or 27 million acres, followed by state agencies that manage a little over 5 million acres. Moreover, Montana is the gateway to the iconic Glacier and Yellowstone National Parks.


Epigenetics And Social Inequalities In Asthma And Allergy, Elizabeth S. Clausing, Cassidy J. Tomlinson, Amy L. Non Jan 2023

Epigenetics And Social Inequalities In Asthma And Allergy, Elizabeth S. Clausing, Cassidy J. Tomlinson, Amy L. Non

School of Global Integrative Studies: Faculty Publications

Respiratory illnesses, such as asthma and allergy disorders, are disproportionately more common among minority racial/ethnic groups and those of low socioeconomic status. In the United States, asthma prevalence and severity are highest among Puerto Ricans (19.2%), American Indians/Alaska Natives (13%), and Black Americans (12.7%) and higher in families living below the poverty threshold than among those living above it (11% vs 8%–9%).1 Many studies of asthma/allergy inequalities assume that genetic differences underlie racial/ethnic differences in these disorders, pointing to genetic ancestry differences between races, but most genetic variants fail to explain racial/ethnic differences and are usually studied only in …


A Network Perspective On Multi-Scale Water Governance In The Lake Champlain Basin, Vermont, Patrick Bitterman, Christopher Koliba, Anna Singer Jan 2023

A Network Perspective On Multi-Scale Water Governance In The Lake Champlain Basin, Vermont, Patrick Bitterman, Christopher Koliba, Anna Singer

School of Global Integrative Studies: Faculty Publications

The prevalence and persistence of harmful cyanobacterial blooms demonstrate the importance of governance systems that effectively engage with many actors to address nonpoint pollution from a variety of sources across multiple spatial domains. Although the importance of social-ecological alignment on effective governance is increasingly clear, governance systems often evolve incrementally and in a manner that fails to adequately align resources and governance networks with biophysical structures, processes, and legacies. Through a survey of water governance actors in the Lake Champlain Basin, we map the structure of the water governance network and identify the key information brokers, flows of resources, and …


Comparison Of Water Column Properties Derived From An Autonomous Underwater Vehicle And Satellite Based Sources In Lake Michigan, David Bennion Jan 2023

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 …


Monitoring Bull Kelp (Nereocystis Leutkeana) Remotely At High Resolutions, Hannah E. Joss Jan 2023

Monitoring Bull Kelp (Nereocystis Leutkeana) Remotely At High Resolutions, Hannah E. Joss

Cal Poly Humboldt theses and projects

Bull kelp (Nereocystis leutkeana) is a foundational seaweed in nearshore, marine systems, traditionally supporting economically important fisheries, extracting nutrients in its vicinity, and sequestering carbon and transporting it great distances to subsidize shallow and deep-sea environments. Bull kelp is also a culturally important species for some indigenous peoples along the northeastern Pacific coastline and provides a harvestable product with growing demand. Global trends in kelp distribution show patterns of decline, and the immense loss of northern California bull kelp forests in response to climatic changes have highlighted the need for alternative sources of kelp, both for the product …


Hawker Culture And Its Infrastructure: Experiences And Contestations In Everyday Life, Lily Kong, Aidan Wong Jan 2023

Hawker Culture And Its Infrastructure: Experiences And Contestations In Everyday Life, Lily Kong, Aidan Wong

Research Collection College of Integrative Studies

Hawker foods characterize urban Asia, with similarities and differences across cities that forge both cultural commonalities and distinctions. From the itinerant to the fixed location, from the temporary sites to the purpose-built, hawker foods are served in informal settings, with varying degrees of tradition and innovation, hygiene and squalidness, local authenticity and globalized influence. In the side-streets of Beijing where local delicacies such as scorpion are served, to the abundant food cart vendors on Bangkok streets, to the warung (small, typically family-owned eateries) in Surabaya, and the carefully planned and designed hawker centres in Singapore, hawker culture is a distinctive …


Impacts Of Land Cover Change On Urban Heat Island (Uhi) In Denver From 1985 To 2020, Sadia Islam Ritu Jan 2023

Impacts Of Land Cover Change On Urban Heat Island (Uhi) In Denver From 1985 To 2020, Sadia Islam Ritu

Electronic Theses and Dissertations

Rapid urbanization due to land use and land cover change has become one of the major problems in the fastest-growing cities during the past few decades. Land surface temperature has changed dramatically due to urban expansion, and it is a major driver of urban eco-environmental change. Increasing temperature leads to the Urban Heat Island (UHI) problem in rapidly growing cities like Denver, contributing to global warming at multiple scales. UHI study is significant to monitor and mitigate the urban heat islandrelated problem in the study area Denver. Satellite remote sensing analysis ready data (ARD) with 30 m resolution based on …


Method Of Validating Satellite Surface Reflectance Product Using Empirical Line Method, Meghraj Kc Jan 2023

Method Of Validating Satellite Surface Reflectance Product Using Empirical Line Method, Meghraj Kc

Electronic Theses and Dissertations

Atmospherically corrected surface reflectance (SR) products are used for reliable monitoring of land surfaces and are the standard products of Landsat sensors. Due to increased demand for SR products, a need exists to verify that the L2C2 (Level-2 Collection-2) SR products are precise and accurate. The Level-2 Collection 2 (L2C2) SR Product is processed satellite imagery data that corrects for atmospheric effects such as absorption and scattering, providing a more accurate representation of Earth's surface. The validation of SR products using ground truth measurement is essential. This study aims to develop and evaluate a validation methodology for satellite SR products. …


การวิเคราะห์การเปลี่ยนแปลงการใช้ประโยชน์ที่ดินที่มีผลต่อลักษณะของน้ำท่าในลุ่มน้ำระยอง, ปทิตตา กฤตย์จิรกร Jan 2023

การวิเคราะห์การเปลี่ยนแปลงการใช้ประโยชน์ที่ดินที่มีผลต่อลักษณะของน้ำท่าในลุ่มน้ำระยอง, ปทิตตา กฤตย์จิรกร

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้มีวัตถุประสงค์เพื่อวิเคราะห์การเปลี่ยนแปลงการใช้ประโยชน์ที่ดินที่มีผลต่อปริมาณน้ำท่าในลุ่มน้ำระยอง วิธีการวิจัยเริ่มจากจำลองการเกิดน้ำท่าด้วยแบบจำลอง Soil and Water Assessment Tool (SWAT) โดยสอบเทียบค่าพารามิเตอร์และทดสอบประสิทธิภาพแบบจำลองด้วยปริมาณน้ำท่าตรวจวัดรายวันใน พ.ศ. 2558-2563 จากนั้นวิเคราะห์รูปแบบการเปลี่ยนแปลงการใช้ประโยชน์ที่ดินในลุ่มน้ำระยองระหว่าง พ.ศ. 2553-2559 เพื่อคาดการณ์การใช้ประโยชน์ที่ดินใน พ.ศ. 2570 2575 และ 2580 ด้วยแบบจำลอง CA-Markov ผลการศึกษาพบว่าแบบจำลองสามารถคาดการณ์กราฟน้ำท่าได้ในระดับพอใช้ในลุ่มน้ำดอกกราย ลุ่มน้ำหนองปลาไหล และลุ่มน้ำคลองใหญ่ ในขณะที่ลุ่มน้ำทับมาคาดการณ์ปริมาณน้ำท่าในช่วงอัตราการไหลสูงได้ต่ำกว่าความเป็นจริง ส่วนลุ่มน้ำบ้านค่ายไม่สามารถจำลองปริมาณน้ำท่าได้อย่างถูกต้อง สำหรับการเปลี่ยนแปลงการใช้ประโยชน์ที่ดินของลุ่มน้ำระยอง พบว่าพื้นที่สิ่งปลูกสร้างมีแนวโน้มเพิ่มขึ้นทุกปีและการใช้ประโยชน์ที่ดินภาคเกษตรกรรมบางประเภท มีแนวโน้มลดลง จึงกำหนดสถานการณ์การจำลองการใช้ประโยชน์ที่ดินในอนาคตได้ 2 แบบ ที่มีพื้นที่อุตสาหกรรมเพิ่มขึ้นและเกษตรกรรมลดลงในอัตราที่ต่างกัน โดยใน พ.ศ. 2570 2575 2580 พบว่าลุ่มน้ำระยองมีปริมาณน้ำท่าเพิ่มขึ้นร้อยละ 23.18 24.95 25.94 จาก พ.ศ. 2563 ในสถานการณ์ที่อุตสาหกรรมเพิ่มขึ้นเฉลี่ยต่อปีร้อยละ 0.5 และพื้นที่เกษตรกรรมลดลงเฉลี่ยต่อปีร้อยละ 0.5 การใช้ประโยชน์ที่ดินประเภท พืชไร่ ยางพารา อุตสาหกรรม และพื้นที่ชุมชน สามารถอธิบายการเปลี่ยนแปลงปริมาณน้ำท่าของลุ่มน้ำระยองได้มากที่สุดทั้ง 2 สถานการณ์ (R2 ระหว่าง 0.85-0.99) เมื่อพิจารณาลุ่มน้ำย่อย พบว่าลุ่มน้ำทับมามีปริมาณน้ำท่าเพิ่มขึ้นมากที่สุดจาก พ.ศ. 2563 ร้อยละ 50.40 เนื่องจากมีพื้นที่อุตสาหกรรมและชุมชนเพิ่มขึ้นและพื้นที่เกษตรกรรมลดลงมากกว่าลุ่มน้ำย่อยอื่น


อิทธิพลของปรากฏการณ์เอนโซต่อการเกิดพายุฤดูร้อนในภาคตะวันออกเฉียงเหนือตอนบนของประเทศไทย, นาวิน เสริมสุข Jan 2023

อิทธิพลของปรากฏการณ์เอนโซต่อการเกิดพายุฤดูร้อนในภาคตะวันออกเฉียงเหนือตอนบนของประเทศไทย, นาวิน เสริมสุข

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้ศึกษาและวิเคราะห์ลักษณะและรูปแบบทางพื้นที่ของปริมาณฝนจากพายุฤดูร้อนตามสภาวะของปรากฏการณ์เอนโซ ในภาคตะวันออกเฉียงเหนือตอนบนของประเทศไทยด้วยแบบจำลอง Weather Research and Forecasting (WRF) วิธีการวิจัยเริ่มจากประมวลผลแบบจำลอง WRF ด้วยชุดพารามิเตอร์ทางคิวมูลัส 4 ชุด ได้แก่ Kain-Fritsh (KF) Bett-Miller-Janjic (BMJ) Grell-Devenyi (GD) และ Grell-3D (G3) ในเดือนมีนาคมถึงพฤษภาคม พ.ศ. 2560-2564 จากนั้นตรวจสอบความถูกต้องด้วยข้อมูลเรดาร์ตรวจอากาศสกลนครที่ปรับแก้ความเอนเอียงเชิงพื้นที่ (Spatially Variable Bias Correction) ด้วยข้อมูลจากสถานีตรวจวัดอากาศภาคพื้นดิน 5 แห่ง ผลการศึกษาพบว่าชุดพารามิเตอร์ BMJ มีประสิทธิภาพเหมาะสมที่สุดในการจำลองปริมาณฝนจากพายุฤดูร้อน โดยมีความคลาดเคลื่อน (RMSE) ของปริมาณฝนรายชั่วโมงและความเร็วลมจากข้อมูลเรดาร์ เท่ากับ 4.98 มิลลิเมตร และ 4.78 นอต ตามลำดับ เมื่อวิเคราะห์ลักษณะและรูปแบบของฝนจากแบบจำลอง WRF ในเดือนมีนาคมและเมษายน พ.ศ. 2553-2564 พบว่าส่วนใหญ่เป็นกลุ่มฝนขนาดเล็กถึงปานกลาง (พื้นที่เฉลี่ย 409.52 ตารางกิโลเมตร) โดยมีกลุ่มของพื้นที่ฝนตกหนัก (มากกว่า 35 มิลลิเมตร/วัน) โดยเฉลี่ย 1-3 กลุ่มต่อวัน ช่วงปลายเดือนเมษายนปริมาณฝนมีความผันแปรสูงกว่าต้นเดือนพฤษภาคมซึ่งแสดงถึงการเกิดสภาพอากาศรุนแรงในบางปี ส่วนเดือนพฤษภาคมกลุ่มของพื้นที่ฝนตกหนักมีจำนวนมากขึ้น มีขนาดพื้นที่ใหญ่ขึ้นและต่อเนื่องกันบนพื้นที่จากอิทธิพลของลมมรสุมฤดูร้อนและร่องความกดอากาศต่ำเขตศูนย์สูตร สำหรับความสัมพันธ์กับค่า Oceanic Niño Index (ONI) พบว่า สภาวะเอลนีโญที่เริ่มต้นขึ้นในฤดูร้อนหรือก่อนฤดูร้อน 3 เดือน ทำให้ปริมาณฝนรายวันและพื้นที่ฝนหนักรายวันในเดือนมีนาคมและเมษายนลดลง (r ระหว่าง -0.44 ถึง -0.86 และ -0.24 ถึง -0.93 ตามลำดับ) ส่วนสภาวะลานีญาเฉพาะที่เริ่มต้นขึ้นในฤดูร้อนเท่านั้นส่งผลให้ปริมาณฝนรายวันในช่วงครึ่งเดือนหลังของมีนาคมและเมษายนเพิ่มขึ้น (r = -0.86 และ -0.58 ตามลำดับ) สำหรับพื้นที่ฝนหนักเพิ่มขึ้นเฉพาะครึ่งเดือนหลังของเมษายนเท่านั้น (r = -0.59) ดังนั้นจึงสรุปได้ว่าสภาวะเอนโซส่งผลต่อปริมาณฝนในช่วงเดือนมีนาคมและเมษายนชัดเจนกว่าเดือนพฤษภาคม


Displacement, Place Attachment, And Other Characteristics Of Anglers On The Yellowstone River, Zachary L. Jones Jan 2023

Displacement, Place Attachment, And Other Characteristics Of Anglers On The Yellowstone River, Zachary L. Jones

Graduate Student Theses, Dissertations, & Professional Papers

Yellowstone River has seen increasing recreational use as Montana has grown and out of state visitation has increased, leading to some locals voicing concerns of crowding. River recreation, as with many outdoor recreational activities, has participants that may be considered to be sensitive to crowded conditions and place a high value on solitude. Considering these perceptions, there is reason to believe that these participants may change their river use patterns if or when the perceived level of crowding exceeds their tolerance thresholds. Further, monitoring efforts conducted at river access sites often do not fully capture users that are already displaced …


An Interdisciplinary Approach To Understanding Ecosystem Processes And Human Perceptions Of Montana’S Mountain Lakes, Carly Innis Jan 2023

An Interdisciplinary Approach To Understanding Ecosystem Processes And Human Perceptions Of Montana’S Mountain Lakes, Carly Innis

Graduate Student Theses, Dissertations, & Professional Papers

Mountain lake ecosystems are critical in their roles in global biogeochemical cycling and providing vital ecosystem services, including freshwater resources, ecological habitats, and recreational opportunities. Ecological processes in mountain lakes, especially those occurring in the littoral, or near-shore zones, are linked to society and can be negatively influenced by human behavior, consequently threatening ecosystem services a lake provides. To investigate this problem, this study interrogates two inter-related issues. First, I assessed ecosystem metabolic services of biological activity that demonstrate a lake’s role in carbon cycling through sampling and monitoring a series of mountain lakes. During the summer of 2022, we …


Pathways To Sustainability: Industry, Development, Business, Agriculture, Economy, And Politics, Andreas Hernandez, Pablo Arias-Benavides, Dayana C.M. Machada, Ousmane Pame, Alice Main, Per Moller Jan 2023

Pathways To Sustainability: Industry, Development, Business, Agriculture, Economy, And Politics, Andreas Hernandez, Pablo Arias-Benavides, Dayana C.M. Machada, Ousmane Pame, Alice Main, Per Moller

Geography and Environmental Studies Faculty Publications

In this chapter we examine six compelling on-the-ground experiences, which are demonstrating pathways to sustainability, resilience and regeneration. Each case opens a pathway to sustainability in a key sphere of human activity: industry, development, business, agriculture, economy and politics. These experiences are creating new social imaginaries embodied in the practical forms of new politics and economics aimed at profound democratizations of human life, and towards a creative realignment of humans with the rest of the web of life. These social imaginaries are both open and encompassing. They are open in the sense that they can be filled with new possibilities …


The Vital Role Of Dehcho Dene Knowledges In Climate Change & Permafrost Thaw Adaptation In Jean Marie River First Nation Nwt, Mackenzie Bell Jan 2023

The Vital Role Of Dehcho Dene Knowledges In Climate Change & Permafrost Thaw Adaptation In Jean Marie River First Nation Nwt, Mackenzie Bell

Theses and Dissertations (Comprehensive)

Across the globe climate change has become an issue of growing concern for both Indigenous and non – Indigenous peoples alike. In Northern Canada this narrative is no different. For Indigenous groups such as the Jean Marie River First Nation (JMRFN) anthropogenic climate change is not only a reality but is visible through their daily interactions with the environment around them. Additional insight pertaining to these climatic changes and their impacts can be found through analyzing the traditional knowledge systems of the JMRFN and how these before mentioned interactions have changed over time. This two-year participatory research project has investigated …