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Articles 2761 - 2790 of 12402
Full-Text Articles in Entire DC Network
Bone Flute:Exploring Voices From The Margins Of Entrepreneurship With Expressive Therapies, Cherith A. Pedersen
Bone Flute:Exploring Voices From The Margins Of Entrepreneurship With Expressive Therapies, Cherith A. Pedersen
Expressive Therapies Dissertations
The problem under investigation is the lived experiences of marginalized entrepreneurs in Barbados. The group of entrepreneurs being explored have been marginalized culturally, institutionally, and resourcefully. The research questions were: How do marginalized entrepreneurs experience business-related encounters due to their identity? How does their identity and use of their “voice” in business situations, position them as businesspersons? Can photography illustrate how they see themselves as businesspersons? There were eight participants in the study, who ranged in age from 18 to 69 years. They were three females and five males who belonged to diverse marginalized identities such as a single mother, …
Abolition Ecologies And The Making Of Freedom As A Place In Bayview-Hunters Point, Spencer Daniel O'Hara
Abolition Ecologies And The Making Of Freedom As A Place In Bayview-Hunters Point, Spencer Daniel O'Hara
Master's Theses
In this paper, I critically explore the subjectivities of Hunters Point Naval Shipyard (HPNS), part of the largest redevelopment project in San Francisco since 1906. Applying an abolition ecologies framework, I ask what explains the duplicity of the Shipyard as a site of radioactive contamination and capital accumulation, and in the same time-space one that creates the conditions for radical place-making. Hunters Point Naval Shipyard is a former commercial and military shipyard located on a peninsula in southeastern San Francisco. Motivated by its desire for a major shipbuilding and repair facility to project maritime power in the Pacific, the Navy …
No. 09: Emerging Digital Technologies And Cross-Border Food Remittances Of Zimbabwean Migrants In Cape Town, South Africa, During The Early Covid-19 Pandemic, Sean Sithole, Daniel Tevera, Mulugeta F. Dinbabo
No. 09: Emerging Digital Technologies And Cross-Border Food Remittances Of Zimbabwean Migrants In Cape Town, South Africa, During The Early Covid-19 Pandemic, Sean Sithole, Daniel Tevera, Mulugeta F. Dinbabo
Migration and Food Security (MiFOOD) Network
This paper examines the emerging unexplored synergies between digital-mobile technologies and cross-border food remittances in Southern Africa. Cell phones and apps or applications for smart mobile devices offer migrants new formal ways of sending food remittances. With large volumes of cash and non-cash items flowing through it, the South Africa-Zimbabwe remittance corridor is a priority market for these new fintech companies. However, recent discussions on digital remittances have focused largely on cash transfers. Similarly, limited attention has been paid to food remittances in the broad discussion on remittances, even though cross-border food transfers are crucial for food and nutrition security …
Health Disparities: Ranking Horry County's Most Disadvantaged Communities, Stephen Borders, Jacob Bradley, Mackenzie Cannon, William Hall
Health Disparities: Ranking Horry County's Most Disadvantaged Communities, Stephen Borders, Jacob Bradley, Mackenzie Cannon, William Hall
Public Health
Horry County is a rapidly growing region in South Carolina, with a diverse population of over 300,000 residents. Despite this growth, the county faces significant health challenges, including high rates of chronic diseases, such as diabetes and obesity, and a shortage of healthcare providers in certain areas. These challenges are exacerbated by the county's socio-economic disparities, with many low-income residents lacking access to basic health services. Our approach is to address these challenges by identifying the areas within the county with the greatest unmet needs, also known as disadvantaged communities. By identifying the needs of Horry County’s most disadvantaged communities, …
The Affective Landscapes Of Herbalism In New Mexico, Samantha Angelou Stroud
The Affective Landscapes Of Herbalism In New Mexico, Samantha Angelou Stroud
Geography ETDs
Herbalism, or practices which use plants for medicinal purposes, is tied to traditions in several cultures of the American Southwest, including Indigenous herbal medicine, Mexican-American curanderismo, and Western herbal traditions. Herbalism has been steadily gaining mainstream popularity since the late 1960s, alongside counterculture, holistic health, and back-to-nature movements, introducing many newcomers to the practice. This study asks: How does herbalism create and attach meaning to plants, cultures, and place in New Mexico? What are the affective landscapes produced by herbalism in New Mexico? And, to what extent do meaningful attachments manifest in ethics and actions of care? I argue that …
21st Century Political Agronomy: Between Collapse And Apocalypse In The Capitalist World System, Harrison Raskin
21st Century Political Agronomy: Between Collapse And Apocalypse In The Capitalist World System, Harrison Raskin
Honors Scholar Theses
Examinations of the causal chain between ecological impacts and food shortages reveal significant impending global disturbances. This paper draws a causal link between ecological impacts and low food productivity which will lead to food insecurity and economic crises in the near term. Further, this paper argues that food insecurity may lead to the collapse of the capitalist world system. This threat is contrasted with “business as usual” climate models which, rather than depicting the collapse of the capitalist world system, depict its persistence throughout the collapse of the world ecology.
Spatial Conservation Planning In The Southeastern United States: Alignments And Opportunities, Bradly Stewart Thornton
Spatial Conservation Planning In The Southeastern United States: Alignments And Opportunities, Bradly Stewart Thornton
Theses and Dissertations
Conservation managers and planners need the ‘best available science’ to support robust and defensible decisions, ensuring that public resources are appropriately allocated. Spatial planning products and decision-support tools developed for this purpose should enable partner organizations to achieve focus, coordination, and increased effectiveness in their investments and actions. Whereas conservation partnerships have historically created distinct planning tools, there is increasing interest for improved coordination, communication, and unifying biological datasets to improve the cohesiveness of regional management activities. We sought to inform spatial conservation planning efforts in the southeastern United States through the development of species distribution models for focal avian …
Evaluation Of Early Maturing Cultivars, Optimal Harvest Timing, And Canopy Reflectance Of Peanut To Maximize Grade And Yield, Joseph Bryan Whittenton
Evaluation Of Early Maturing Cultivars, Optimal Harvest Timing, And Canopy Reflectance Of Peanut To Maximize Grade And Yield, Joseph Bryan Whittenton
Theses and Dissertations
Peanut digging timing is difficult to predict due to indeterminate growth and peanut pods maturing underground, resulting in the need to research methods that provide consistent measurements, while reducing time and effort for farmers and researchers. Experiments were conducted to evaluate the accuracy of the Maturity Index 1 and Maturity Index 2 in predicting peanut grade, the accuracy of the North Carolina 2 degree day method in predicting peanut yield, and remote sensing vegetative indices sensitivity equivalence (SEq) to peanut Maturity Index 2 and harvest grade (TSMK) for cultivars IPG-914 and Georgia-06G in Mississippi.
Maturity Index 1 and …
Du Undergraduate Showcase: Research, Scholarship, And Creative Works, Caitlyn Aldersea, Justin Bravo, Sam Allen, Anna Block, Connor Block, Emma Buechler, Maria De Los Angeles Bustillos, Arianna Carlson, William Christensen, Olivia Kachulis, Noah Craver, Kate Dillon, Muskan Fatima, Angel Fernandes, Emma Finch, Colleen Cassidy, Amy Fishman, Andrea Francis, Stacia Fritz, Simran Gill, Emma Gries, Rylie Hansen, Shannon Powers, Jacqueline Martinez, Zachary Harker, Ashley Hasty, Mykaela Tanino-Springsteen, Kathleen Hopps, Adelaide Kerenick, Colin Kleckner, Ci Koehring, Elijah Kruger, Braden Krumholz, Maddie Leake, Lyneé Alves, Seraphina Loukas, Yatzari Lozano Vazquez, Haley Maki, Emily Martinez, Sierra Mckinney, Audrey Mitchell, Kipling Newman, Audrey Ng, Megan Lucyshyn, Andrew Nguyen, Stevie Ostman, Casandra Pearson, Alexandra Penney, Julia Gielczynski, Tyler Ball, Anna Rini, Christina Rorres, Simon Ruland, Helayna Schafer, Emma Sellers, Sarah Schuller, Claire Shaver, Kevin Summers, Isabella Shaw, Madison Sinar, Claudia Pena, Apshara Siwakoti, Carter Sorensen, Madi Sousa, Anna Sparling, Alexandra Revier, Brandon Thierry, Dylan Tyree, Maggie Williams, Lauren Wols
Du Undergraduate Showcase: Research, Scholarship, And Creative Works, Caitlyn Aldersea, Justin Bravo, Sam Allen, Anna Block, Connor Block, Emma Buechler, Maria De Los Angeles Bustillos, Arianna Carlson, William Christensen, Olivia Kachulis, Noah Craver, Kate Dillon, Muskan Fatima, Angel Fernandes, Emma Finch, Colleen Cassidy, Amy Fishman, Andrea Francis, Stacia Fritz, Simran Gill, Emma Gries, Rylie Hansen, Shannon Powers, Jacqueline Martinez, Zachary Harker, Ashley Hasty, Mykaela Tanino-Springsteen, Kathleen Hopps, Adelaide Kerenick, Colin Kleckner, Ci Koehring, Elijah Kruger, Braden Krumholz, Maddie Leake, Lyneé Alves, Seraphina Loukas, Yatzari Lozano Vazquez, Haley Maki, Emily Martinez, Sierra Mckinney, Audrey Mitchell, Kipling Newman, Audrey Ng, Megan Lucyshyn, Andrew Nguyen, Stevie Ostman, Casandra Pearson, Alexandra Penney, Julia Gielczynski, Tyler Ball, Anna Rini, Christina Rorres, Simon Ruland, Helayna Schafer, Emma Sellers, Sarah Schuller, Claire Shaver, Kevin Summers, Isabella Shaw, Madison Sinar, Claudia Pena, Apshara Siwakoti, Carter Sorensen, Madi Sousa, Anna Sparling, Alexandra Revier, Brandon Thierry, Dylan Tyree, Maggie Williams, Lauren Wols
DU Undergraduate Research Journal Archive
DU Undergraduate Showcase: Research, Scholarship, and Creative Works
L’Économie Solidaire De Kabylie : Une Perspective Critique, Mohamed-Amokrane Zoreli
L’Économie Solidaire De Kabylie : Une Perspective Critique, Mohamed-Amokrane Zoreli
Journal of Amazigh Studies
Résumé :
Dans cet article, l’auteur réalise, pour le contexte de la Kabylie, une étude d’ensemble de l’évolution des pratiques d’économie sociale, du modèle originel jusqu’à la période actuelle, en passant par les différentes phases de colonisation puis d’indépendance. L’objectif est triple. Voir d’abord quels sont les ressorts, les mécanismes et les finalités des solidarités locales originelles et comment elles se mobilisent pour répondre à des besoins socio-économiques et politiques. Voir ensuite comment l’Etat-nation et la mondialisation ont impacté dans le temps long ces solidarités locales, en les démobilisant et immobilisant par différents moyens, juridiques, économiques et politiques. Voir enfin …
Post Wildfire Vegetation Response To The Wildland-Urban Interface: A Case Study Of The Station Fire, Angelo C. De Guzman, Raju Bista, Parveen K. Chhetri
Post Wildfire Vegetation Response To The Wildland-Urban Interface: A Case Study Of The Station Fire, Angelo C. De Guzman, Raju Bista, Parveen K. Chhetri
CSU Journal of Sustainability and Climate Change
In the past, wildfires served as a method for mother nature to promote biodiversity and to help maintain a functioning ecosystem. However, climate change alters the fire regime, significantly impacting vegetation recovery. Human disturbances and increased land use and land cover heighten vegetation disruption and abundance after a fire. Wildland-urban interface (WUI) – the region where the vegetation intermingles with the roads, houses, and human-made structures – threatens vegetation and the human population. Overall vegetation recovery after the Station Fire of 2009 spread through the San Gabriel Mountains, Los Angeles County was observed using Digital Elevation Model (DEM), Normalized Difference …
Energy And Climate Change Issues Around Csudh, Alex E. Perez, Tara B. Jones, Raju Bista, Parveen K. Chhetri
Energy And Climate Change Issues Around Csudh, Alex E. Perez, Tara B. Jones, Raju Bista, Parveen K. Chhetri
CSU Journal of Sustainability and Climate Change
Climate change is posing significant challenges to California’s energy sector. Extreme weather events (heat and cold) may pressure existing infrastructure. Many studies have indicated that extreme climate events would impact the energy system by affecting peak electricity demand. However, very few studies have been conducted to understand how disadvantaged communities (DACs) will be impacted. Because of unequal access to energy infrastructure (electricity generation and battery storage), DACs are more vulnerable to power outages due to the rising number of significant weather events caused by climate change. To address the issue of how DACs are disproportionately affected by climate change-related energy …
Tied Together, Eiko Nishida
Tied Together, Eiko Nishida
Theses and Dissertations
The paper is about a site-specific installation that questions a viewer’s norms and perspectives, through the use of multilingual newspapers as a sculptural material.
Identifying Socially Sensitive Populations Susceptible To New York City’S Coastal And Pluvial Flooding: A Vulnerability Analysis, Gowri A. Anand
Identifying Socially Sensitive Populations Susceptible To New York City’S Coastal And Pluvial Flooding: A Vulnerability Analysis, Gowri A. Anand
Theses and Dissertations
This paper provides an approach to quantifying coastal and pluvial flooding for New York City using the exposure-sensitivity-adaptive capacity theoretical framework. Vulnerabilities for different flood scenarios are calculated and discussed in order to show nuance in the flooding that could be experienced in NYC.
Techniques For Tree Species Classification With Hyperspectral Imagery At Neon Science Sites, Anthony T. Albanese
Techniques For Tree Species Classification With Hyperspectral Imagery At Neon Science Sites, Anthony T. Albanese
Theses and Dissertations
Studies three sets of techniques for hyperspectral tree species classification at NEON science sites, aiming to work towards producing a general classification model.
Restorative Playscape Design: A Phenomenological Approach To Designing Playscapes, Jennifer Bradley
Restorative Playscape Design: A Phenomenological Approach To Designing Playscapes, Jennifer Bradley
Electronic Theses and Dissertations
This dissertation outlines the development of a phenomenological and restorative approach to playscape design. Restorative Playscape (RPD) is a phenomenologically based approach to designing children’s play environments that involves a process of attending to, noticing, and uncovering natural affordances for play and development, and making enhancements to the environment so that the affordances can experienced in their full potential and capacity to support children’s growth and development. The restorative approach involves the application of three phenomenological methods to identify the affordances of the outdoor play environment: 1) Child Guided Walks- to explore the affective and relational dimension of children’s experience …
Book Review: Under The Weather: Reimagining Mobility In The Climate Crisis., Raymond Murphy
Book Review: Under The Weather: Reimagining Mobility In The Climate Crisis., Raymond Murphy
Critical Disaster Studies
Under the Weather: Reimagining Mobility in the Climate Crisis is an insightful, important book that reports on a fine-grained investigation Sodero made of the consequences and response to the disasters resulting from Hurricane Juan in Nova Scotia in 2003 and Hurricane Igor in Newfoundland in 2010, with comparisons to Hurricane Sandy in New York, Hurricane Katrina in New Orleans, Hurricane Maria in Puerto Rico, the 1998 ice storm in northeastern North America and the Icelandic ash cloud. One original feature is the focus on mobility, how indispensable it is in modern societies, how it is disrupted by extreme weather, and …
New Insights Into The Paleovegetation Of The Ancient Underwater Forest Located In The Northern Gulf Of Mexico, Karla Lizarraga Garcia
New Insights Into The Paleovegetation Of The Ancient Underwater Forest Located In The Northern Gulf Of Mexico, Karla Lizarraga Garcia
Master's Theses
A well-preserved remnant of an ancient bald cypress forest (hereafter, Underwater Forest) constitutes the only known archive of a glacial refuge on the once exposed continental shelf of the Northern Gulf of Mexico. This forest existed around 41-72 yBP (MIS 3-5) according to the existing dating methods applied on previous studies. As the climate conditions and sea levels changed, the vegetation of this glacial refuge shifted from bald cypress forests to open marshes, altering the vegetation dynamics. The present research analyzed four new cores (21DF-5A, 21DF-5B, 15DF-6, and 16DF-3A), which provided additional insights into the vegetation that once existed in …
Ambulance Deserts: Geographic Disparities In The Provision Of Ambulance Services [Chartbook], Yvonne Jonk Phd, Carly Milkowski Mph, Zachariah Croll Mph, Karen Pearson Mlis, Ma
Ambulance Deserts: Geographic Disparities In The Provision Of Ambulance Services [Chartbook], Yvonne Jonk Phd, Carly Milkowski Mph, Zachariah Croll Mph, Karen Pearson Mlis, Ma
Emergency Medical Services (EMS)
This chartbook begins with a broad overview of ambulance services including common types of organizational structure(s) and workforce and reimbursement issues. The methods section provides our definition of ambulance deserts and describes how ambulance deserts are illustrated in the national and state maps. The results section begins with an overall description of the prevalence of ambulance deserts in rural and urban counties across the 41 states for which data were available at the time, and the variation in the percent of people living in ambulance deserts across the four census regions. States are ranked in terms of the percent of …
Disturbance Regimes And Management Strategies Of Mountain Ash Forest Ecosystems In Victoria, Australia; A Literature Review, Zoe Plumb
Sustainability and Social Justice
This paper discusses the ecology of mountain ash forests, the disturbances regimes that currently exist in these ecosystems, and finally addresses the current management practices and future management practices. Mountain ash forests are subjected to a wide range of research in the Central Highlands of Victoria, an area approximately 14,000 hectares in range. These forests are dominated by montane ash trees (Eucalyptus regnans F. Muell), which are critically endangered and at risk of collapse, attributed to the decline in large hollow-bearing trees throughout the region. Management of these forests are controlled by the Department of Environment, Land, Water, and …
Quantifying The Effect Of Socio-Economic Predictors And The Built Environment On Mental Health Events In Little Rock, Ar, Alfieri Ek, Grant Drawve, Samantha Robinson, Jyotishka Datta
Quantifying The Effect Of Socio-Economic Predictors And The Built Environment On Mental Health Events In Little Rock, Ar, Alfieri Ek, Grant Drawve, Samantha Robinson, Jyotishka Datta
Sociology and Criminology Faculty Publications and Presentations
Law enforcement agencies continue to grow in the use of spatial analysis to assist in identifying patterns of outcomes. Despite the critical nature of proper resource allocation for mental health incidents, there has been little progress in statistical modeling of the geo-spatial nature of mental health events in Little Rock, Arkansas. In this article, we provide insights into the spatial nature of mental health data from Little Rock, Arkansas between 2015 and 2018, under a supervised spatial modeling framework. We provide evidence of spatial clustering and identify the important features influencing such heterogeneity via a spatially informed hierarchy of generalized …
Hakoah Wien: Kraft Als (Ver)Einigung Und Siedlung Der Unbeständigen Post/Modernen Identität, Owen N. Sayre
Hakoah Wien: Kraft Als (Ver)Einigung Und Siedlung Der Unbeständigen Post/Modernen Identität, Owen N. Sayre
German Studies Honors Projects
The Sport Club and in particular football team Hakoah Wien is one of the best known examples in its time for contemporary theorists interested in analyzing the austrian-jewish identity of the 1920s. However there are many developments in austrian studies such as “jewish difference,” “co-constitutionality,” “the spatial turn” and “decolonization.” What, in this context, does it mean for a sports club to materially propagate the ideas of a liberatory religious and national identity, while representing an oppressive austrian identity on the world stage? This question has a lot to do with the concrete history of property rights and jewish oppression …
Is Closing The Agricultural Yield Gap A "Risky" Endeavor?, Nicolas Gatti, Michael Cecil, Kathy Baylis, Lyndon Estes, Jordan Blekking, Thomas Heckelei, Noemi Vergopolan, Tom Evans
Is Closing The Agricultural Yield Gap A "Risky" Endeavor?, Nicolas Gatti, Michael Cecil, Kathy Baylis, Lyndon Estes, Jordan Blekking, Thomas Heckelei, Noemi Vergopolan, Tom Evans
Geography
CONTEXT: Sub-Saharan Africa (SSA) has the climatic and biophysical potential to grow the crops it needs to meet rapidly growing food demand; however, agricultural productivity remains low. While potential maize yields in Zambia are 9 t per hectare (t/ha), the average farmer produces only 1–2. OBJECTIVE: We evaluate the contribution of responses to weather risk to that gap by decomposing the yield gap in maize in Zambia. While we know that improved seed and fertilizer can expand yield and profit, they may also increase the variance of yield under different weather outcomes, reducing their adoption. METHODS: We use a novel …
Still Got The Blues - No Time But Here, No Place But Now: Geographies Of Art & Activism In The Work Of Clyde Woods., Jake Mace
Electronic Theses and Dissertations
The fight against displacement and dispossession in the increasingly inequitable process of reterritorialization is arguably the most pressing struggle of the modern city – and it is articulated through cultural production as much as through political debate and economic development. Yet research that is at the nexus of critical, urban, and cultural studies and which explores the resistant potential of countercultural production rather than the hegemonic impact of mainstream cultural production is underdeveloped. Clyde Woods’s blues epistemology offers a guide to reading cultural production of marginalized groups as maps of meaning that offer alternative visions of the past, the present, …
Urban & Deltaic Subsidence In Bangladesh From Sentinel-1 Insar Data Analysis, Gavin Middleton
Urban & Deltaic Subsidence In Bangladesh From Sentinel-1 Insar Data Analysis, Gavin Middleton
Masters Theses & Specialist Projects
Bangladesh's Bengal Delta faces multiple challenges, such as rising sea levels, coastal flooding, and high population density, leading to land subsidence, saltwater intrusion, and biodiversity loss. The region's groundwater security, essential for the country's survival, is at risk due to climate change and saltwater intrusion. Groundwater security is dependent on the Bengal Water Machine (BWM), which is at risk due to saltwater intrusion and monsoon rainfall distribution from climate change. Groundwater exhaustion leads to natural hazards such as subsidence, landslides, and flooding. A large portion of the population is at risk from groundwater insecurity, which requires mitigating worldwide greenhouse gas …
Extracting Topography From Historic Topographic Maps Using Gis-Based Deep Learning, Briar Pierce
Extracting Topography From Historic Topographic Maps Using Gis-Based Deep Learning, Briar Pierce
Electronic Theses and Dissertations
Historical topographic maps are valuable resources for studying past landscapes, but they are unsuitable for geospatial analysis. Cartographic map elements must be extracted and digitized for use in GIS. This can be accomplished by sophisticated image processing and pattern recognition techniques, and more recently, artificial intelligence. While these methods are generally effective, they require high levels of technical expertise. This study presents a straightforward method to digitally extract historical topographic map elements from within popular GIS software, using new and rapidly evolving toolsets. A convolutional neural network deep learning model was used to extract elevation contour lines from a 1940 …
Geophysical, Archaeological, And Geospatial Investigations At Presidio Los Adaes, 18th Century Capital Of Spanish Texas, Robert Linam
Geophysical, Archaeological, And Geospatial Investigations At Presidio Los Adaes, 18th Century Capital Of Spanish Texas, Robert Linam
Electronic Theses and Dissertations
Presidio Los Adaes (16NA16), located in present day northwest Louisiana, served as the capital of Spanish Texas for much of the 18th century. Maps and historical documents provide architectural plans for the fort and other buildings on the site but differ in the size and location of several buildings. In 2009, a geophysical survey of the site with ground penetrating radar, magnetometry, electrical resistance, and electromagnetic induction showed good preservation of architectural foundations. Visual assessment of the maps and geophysical data, information from archaeological excavations, and spatial statistics suggests that the fort was originally built as specified by the architect, …
Cotton Blight Identification With Ground Framed Canopy Photo-Assisted Multispectral Uav Images, Changwei Wang, Yongchong Chen, Zhipei Xiao, Xianming Zeng, Shihao Tang, Fei Lin, Luxiang Zhang, Xuelian Meng, Shaoqun Liu
Cotton Blight Identification With Ground Framed Canopy Photo-Assisted Multispectral Uav Images, Changwei Wang, Yongchong Chen, Zhipei Xiao, Xianming Zeng, Shihao Tang, Fei Lin, Luxiang Zhang, Xuelian Meng, Shaoqun Liu
Faculty Publications
Cotton plays an essential role in global human life and economic development. However, diseases such as leaf blight pose a serious threat to cotton production. This study aims to advance the existing approach by identifying cotton blight infection and classifying its severity at a higher accuracy. We selected a cotton field in Shihezi, Xinjiang in China to acquire multispectral images with an unmanned airborne vehicle (UAV); then, fifty-three 50 cm by 50 cm ground framed plots were set with defined coordinates, and a photo of its cotton canopy was taken of each and converted to the L*a*b* color space as …
Study On The Thermospheric Density Distribution Pattern During Geomagnetic Activity, Lirong Yin, Lei Wang, Lijun Ge, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng
Study On The Thermospheric Density Distribution Pattern During Geomagnetic Activity, Lirong Yin, Lei Wang, Lijun Ge, Jiawei Tian, Zhengtong Yin, Mingzhe Liu, Wenfeng Zheng
Faculty Publications
The atmospheric density of the thermosphere is a fundamental parameter for spacecraft launch and orbit control. Under magnetic storm conditions, the thermospheric atmospheric density experiences significant fluctuations, which have a negative impact on spacecraft control. Exploring thermospheric density during geomagnetic storms can help to mitigate the effects of such events. Research on the inversion of accelerometer measurements for different satellites and the variations of atmospheric density under extreme conditions is still in its infancy. In this paper, the distribution of atmospheric density during three geomagnetic storms is investigated from the inversion results of the Swarm-C accelerometer. Three major geomagnetic storms …
Multidecadal Pre- And Post-Collapse Dynamics Of The Northern Larsen Ice Shelf, Shujie Wang, Hongxing Liu, Richard B. Alley, Kenneth Jezek, Patrick Alexander, Karen E. Alley, Zhengrui Huang, Lei Wang
Multidecadal Pre- And Post-Collapse Dynamics Of The Northern Larsen Ice Shelf, Shujie Wang, Hongxing Liu, Richard B. Alley, Kenneth Jezek, Patrick Alexander, Karen E. Alley, Zhengrui Huang, Lei Wang
Faculty Publications
Rapid retreat of Antarctic ice shelves in a warmer climate remains challenging to predict, contributing to uncertainties in projections of sea level rise. The collapse of the Larsen B Ice Shelf on the Antarctic Peninsula in 2002 was perhaps the most dramatic example of ice shelf retreat on record. Despite a general consensus that regional climate warming is associated with ice shelf collapse, knowledge of the precise details leading to and following collapse is limited. Here we examine a comprehensive set of satellite observations, modeling experiments, and climate reanalysis data to elucidate calving behavior, flow dynamics, and mechanical conditions of …