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Articles 661 - 690 of 3979
Full-Text Articles in Entire DC Network
Mapping Narrations, Narrating Maps: Concepts Of The World In The Middle Ages And The Early Modern Period, Ingrid Baumgartner, Daniel Gneckow, Anna Hollenbach, Phillip Landgrebe
Mapping Narrations, Narrating Maps: Concepts Of The World In The Middle Ages And The Early Modern Period, Ingrid Baumgartner, Daniel Gneckow, Anna Hollenbach, Phillip Landgrebe
Research in Medieval and Early Modern Culture
This volume offers the author's central articles on the medieval and early modern history of cartography for the first time in English translation. A first group of essays gives an overview of medieval cartography and illustrates the methods of cartographers. Another analyzes world maps and travel accounts in relation to mapped spaces. A third examines land surveying, cartographical practices of exploration and the production of Portolan atlases.
Tracing Geochemical Sources And Health Risk Assessment Of Uranium In Groundwater Of Arid Zone Of India, P. Pandit, Atul Saini, Sabarathinam Chidambaram, Vinod Kumar, Banjarani Panda, A. L. Ramanathan, Netrananda Sahu, A. K. Singh, Rohit Mehra
Tracing Geochemical Sources And Health Risk Assessment Of Uranium In Groundwater Of Arid Zone Of India, P. Pandit, Atul Saini, Sabarathinam Chidambaram, Vinod Kumar, Banjarani Panda, A. L. Ramanathan, Netrananda Sahu, A. K. Singh, Rohit Mehra
Nebraska Water Center: Faculty Publications
Water quality degradation and metal contamination in groundwater are serious concerns in an arid region with scanty water resources. This study aimed at evaluating the source of uranium (U) and potential health risk assessment in groundwater of the arid region of western Rajasthan and northern Gujarat. The probable source of vanadium (V) and fluorine (F) was also identified. U and trace metal concentration, along with physicochemical characteristics were determined for 265 groundwater samples collected from groundwater of duricrusts and palaeochannels of western Rajasthan and northern Gujarat. The U concentration ranged between 0.6 and 260 μg L−1 with a mean …
Effects Of Spatial And Temporal Variability In Surface Water Inputs On Streamflow Generation And Cessation In The Rain–Snow Transition Zone, Ernesto Trujillo
Effects Of Spatial And Temporal Variability In Surface Water Inputs On Streamflow Generation And Cessation In The Rain–Snow Transition Zone, Ernesto Trujillo
Geosciences Faculty Publications and Presentations
Climate change affects precipitation phase, which can propagate into changes in streamflow timing and magnitude. This study examines how the spatial and temporal distribution of rainfall and snowmelt affects discharge in rain–snow transition zones. These zones experience large year-to-year variations in precipitation phase, cover a significant area of mountain catchments globally, and might extend to higher elevations under future climate change. We used observations from 11 weather stations and snow depths measured from one aerial lidar survey to force a spatially distributed snowpack model (iSnobal/Automated Water Supply Model) in a semiarid, 1.8 km2 headwater catchment. We focused on surface …
College Of Natural Sciences Newsletter, May & June 2022, College Of Natural Sciences
College Of Natural Sciences Newsletter, May & June 2022, College Of Natural Sciences
College of Natural Sciences Newsletters and Reports
Volume 3, Issue 4
Page 1 Dean's Message
Page 2 Awards and Recognition
Page 3-4 The path to a Doctorate Degree
Page 4 American Indian Student Center Native Graduate Honoring Ceremony
Page 5 Celebrating the lives of those who touched the College
Page 6 Media coverage of CNS
Page 7 Open PRAIRIE
Page 8-10 CNS Graduation Festivities
Page 11-14 Spring 2022 Dean's List
Page 16 Richard and Janice Vetter Endowed Professorship in Biotechnology.position
Fluid Pathways In Magmatic Fluid-Dominated Hydrothermal System: Upper Resurgent Cone, Brothers Volcano, New Zealand, Esther G. Goita
Fluid Pathways In Magmatic Fluid-Dominated Hydrothermal System: Upper Resurgent Cone, Brothers Volcano, New Zealand, Esther G. Goita
Honors Theses
The Tonga-Kermadec Arc is an active volcanic arc located between New Zealand and Fiji. The arc expands over an approximate distance of 2530 km. The Kermadec Arc is currently host to over 30 volcanoes, the majority of which are submarine. The magmatic activity along the arc is characterized by the convergence between the Pacific and Australian plates. Brothers volcano is the most active hydrothermal system along the Kermadec arc and hosts two distinct hydrothermal systems, one magmatic fluid dominated, and the other seawater dominated, making the site perfect for studying nascent volcanogenic massive sulfide formation and fluid pathways. The International …
Pronounced Changes In Thermal Signals Associated With The Madoi (China) M 7.3 Earthquake From Passive Microwave And Infrared Satellite Data, Feng Jing, Lu Zhang, Ramesh P. Singh
Pronounced Changes In Thermal Signals Associated With The Madoi (China) M 7.3 Earthquake From Passive Microwave And Infrared Satellite Data, Feng Jing, Lu Zhang, Ramesh P. Singh
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Thermal variations in surface and atmosphere observed from multiple satellites prior to strong earthquakes have been widely reported ever since seismic thermal anomalies were discovered three decades ago. These thermal changes are related to stress accumulation caused by the tectonic activities in the final stage of earthquake preparation. In the present paper, we focused on the thermal changes associated with the 2021 Madoi M 7.3 earthquake in China and analyzed the temporal and spatial evolution of the Index of Microwave Radiation Anomaly (IMRA) and the Index of Longwave Radiation Anomaly (ILRA) based on 8-year microwave brightness temperature (MWBT) and 14-year …
Echoed Sites And The Unknowable Object, Joseph Canizales
Echoed Sites And The Unknowable Object, Joseph Canizales
MFA in Visual Art
This thesis will discuss the expanded field of sculpture, simulacra, digital technology, and two terms I’ve devised: the unknowable object, and echoed sites. Within these two terms, I’m concerned with the complicated relationship between humans and geology and how we extract material from the ground without reflecting on the geologic history of the site. In echoed sites I create sculptures with and without a geologic site or object, by way of digital technology. These forms display two states paradoxically in balance, where what’s presented leaves more questions than answers. Thus, as part of echoed sites, exists the unknowable object. …
Structural Geology And Cenozoic Deformation: Western Northern Range, Trinidad, Abigail Faye Clark
Structural Geology And Cenozoic Deformation: Western Northern Range, Trinidad, Abigail Faye Clark
Geology: Student Scholarship & Creative Works
The Northern Range, Trinidad underwent deformation due to oblique collision of Caribbean plate with northern South America, which was then followed by transform plate motion. Deformation began in the late Miocene when sedimentary protoliths were ductility deformed and metamorphosed to greenschist facies; this event and subsequent transform deformation drove exhumation of these rocks to the surface and created their high topography. This project provides constraints of the structural history of the western Northern Range where bedrock mapping and structural analyses are most complete. Initial geologic mapping of Northern Range, which continued from the 1950s,1960s, and 1990s, focused on attempting to …
The Current State Of Community Engagement In Urban Soil Pollution Science, Nicole Fernández-Viña, Yujuan Chen, Kirsten Schwarz
The Current State Of Community Engagement In Urban Soil Pollution Science, Nicole Fernández-Viña, Yujuan Chen, Kirsten Schwarz
Agricultural and Environmental Sciences Faculty Research
Environmental burdens disproportionately impact the health of communities of color and low-income communities. Contemporary and legacy industry and land development may pollute soils with pesticides, petroleum products, and trace metals that can directly and indirectly impact the health of frontline communities. Past efforts to study environmental injustice have often excluded those most impacted, created distrust of researchers and other experts among frontline communities, and resulted in little to no structural change. Prevailing research methods value formal knowledge systems, while often dismissing the knowledge of those most harmed by environmental hazards. Community science has emerged as a process of doing science …
A Social-Ecological-Technological Systems Framework For Urban Ecosystem Services, Timon Mcphearson, Elizabeth M. Cook, Marta Berbés-Blázquez, Chingwen Cheng, Nancy B. Grimm, Erik Andersson, Olga Barbosa, David G. Chandler, Heejun Chang, Mikhail V. Chester, Daniel L. Childers, Stephen R. Elser, Niki Frantzeskaki, Zbigniew Grabowski, Peter M. Groffman, Rebecca L. Hale, David M. Iwaniec, Nadja Kabisch, Christopher Kennedy, Samuel A. Markolf, A. Marissa Matsler, Lauren E. Mcphillips, Thaddeus R. Miller, Tischa A. Muñoz-Erickson, Emma Rosi, Tiffany G. Troxler
A Social-Ecological-Technological Systems Framework For Urban Ecosystem Services, Timon Mcphearson, Elizabeth M. Cook, Marta Berbés-Blázquez, Chingwen Cheng, Nancy B. Grimm, Erik Andersson, Olga Barbosa, David G. Chandler, Heejun Chang, Mikhail V. Chester, Daniel L. Childers, Stephen R. Elser, Niki Frantzeskaki, Zbigniew Grabowski, Peter M. Groffman, Rebecca L. Hale, David M. Iwaniec, Nadja Kabisch, Christopher Kennedy, Samuel A. Markolf, A. Marissa Matsler, Lauren E. Mcphillips, Thaddeus R. Miller, Tischa A. Muñoz-Erickson, Emma Rosi, Tiffany G. Troxler
Advanced Science Research Center
As rates of urbanization and climatic change soar, decision-makers are increasingly challenged to provide innovative solutions that simultaneously address climate change impacts and risks and inclusively ensure quality of life for urban residents. Cities have turned to nature-based solutions to help address these challenges. Nature-based solutions, through the provision of ecosystem services, can yield numerous benefits for people and address multiple challenges simultaneously. Yet, efforts to mainstream nature-based solutions are impaired by the complexity of the interacting social, ecological, and technological dimensions of urban systems. This complexity must be understood and managed to ensure ecosystem-service provisioning is effective, equitable, and …
Lake Satellite Temperature Data Validation, Mamadou Balde, Pascal Kouogang
Lake Satellite Temperature Data Validation, Mamadou Balde, Pascal Kouogang
Publications and Research
In environmental remote sensing, satellite data isn't absolutely conclusive, for that reason, there is a natural need to verify the data acquired from the satellite. The most suitable tool to achieve such verification is on ground sensors that have the advantage of proximity. Addressing any possible discrepancies between the satellite data and the ground sensor data is sure to yield ways to come up with improvements of satellite band calibration and sensing capabilities. This research focused on correlating temperature data from the MODIS satellite with the data obtained from the In Situ sensor located in Lake Sunapee. Doing the latter …
Analysis Of Aftershock Parameters For The Alaskan Subduction Zone Tectonic Region, Gabrielle M. Paris (They/Them), Richard C. Hugo, Andrew J. Michael
Analysis Of Aftershock Parameters For The Alaskan Subduction Zone Tectonic Region, Gabrielle M. Paris (They/Them), Richard C. Hugo, Andrew J. Michael
Student Research Symposium
On 29 July 2021, a magnitude 8.2 earthquake was felt by over 200 people near Perryville, Alaska. The early aftershock forecasts issued by the USGS use default parameters based on expected productivity within a given tectonic region. These forecasts predicted a slower decrease in aftershock activity than what was observed. Even after the USGS adjusted the aftershock forecast parameters, the forecasts did not improve in the long term. Accurate aftershock predictions are important for maintaining public confidence in disaster alert systems. The question I want to explore is: are the generic parameters used in aftershock forecasting accurately describing the observed …
Discussion Of “Guiding Principles For Hydrologists Conducting Interdisciplinary Research And Fieldwork With Participants”, Melissa Haeffner
Discussion Of “Guiding Principles For Hydrologists Conducting Interdisciplinary Research And Fieldwork With Participants”, Melissa Haeffner
Environmental Science and Management Faculty Publications and Presentations
Rangecroft et al. (2021) offer a set of principles for conducting interdisciplinary research and fieldwork with participants from a hydrologist perspective. In this invited paper, I present some thoughts from a social scientist’s perspective, not to disagree with their points but to add to them. Specifically, I use my sociology background and interdisciplinary experiences to reflect on qualitative evaluative criteria, power dynamics in the scientific community, barriers to interdisciplinary research, and approaches to overcome obstacles. Individual researchers can educate themselves about other disciplines, and there are also opportunities for institutional change on the part of universities, funders, and …
Temporal Changes In Surface Water Availability: Patterns Of Seasonal Shift On Water Stress In The Conterminous Us Under A Changing Climate, Quinn Montana
Graduate Theses and Dissertations
The argument could be made that there is nothing more valuable on the planet than water. Our lives depend upon it. Climate change is already having an impact on the United States (US) and water stress will be one of the problems we increasingly face in coming decades. Regional research has shown that one or another part of the conterminous US (CONUS) is expected to experience an annual deficit or a surplus in runoff. Further studies have looked at changing patterns over the CONUS as a whole. Other research has focused on a particular season. This work addresses a gap …
Vermont Global Warming Solutions Act: The Costs Of Inaction From Land Conversions, Grayson L. Younts
Vermont Global Warming Solutions Act: The Costs Of Inaction From Land Conversions, Grayson L. Younts
All Theses
The Vermont (VT) Global Warming Solutions Act (GWSA, 2020) sets greenhouse gas (GHG) emissions reduction targets as 26% below 2005 by 2025, 40% below 1990 by 2030 and 80% below 1990 by 2050 for energy-related emissions only. Vermont’s omission of GHG emissions from land conversions can result in significant costs of inaction (COI), which can hinder state’s mitigation and adaptation plans and result in a climate crisis-related risks (e.g., credit downgrade). Science-based spatio-temporal data of GHG emissions from soils as a result of land conversions can be integrated into the conceptual framework of “action” versus “inaction” to prevent GHG emissions. …
Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws
School of Natural Resources: Dissertations, Theses, and Student Research
Marginal cropland is suboptimal due to historically low and variable productivity and limiting biophysical characteristics. To support future agricultural management and policy decisions in Nebraska, U.S.A, it is important to understand where cropland is marginal for its two most economically important crops: corn (Zea mays) and soybean (Glycine max). As corn and soybean are frequently planted in a crop rotation, it is important to consider if there is a relationship with cropland marginality. Based on the current literature, there exists a need for a flexible yet robust methodology for identifying marginal land at different scales, which …
The Impact Of Sea-Level Rise In Numerically Modeled Landfalling Hurricanes: Katrina And The Gulf Coast., Serenity Nadirah Mercuri
The Impact Of Sea-Level Rise In Numerically Modeled Landfalling Hurricanes: Katrina And The Gulf Coast., Serenity Nadirah Mercuri
Electronic Theses and Dissertations
With climate change, landfalling hurricanes become an increasing threat to coastal regions. However, the interactions between the coastal landscape and landfalling hurricanes are often overlooked when addressing sea-level rise outside of inundation and independent of sea surface temperature. This study analyzed the potential impacts regarding structure and intensity as a result of sea-level rise in the Gulf of Mexico using the WRF-ARW numerical model coupled with a 1D ocean model. Analysis showed that 10 m windspeed from landfall forward was higher in modified coastlines, and minimum sea-level pressure post-landfall was consistently lower for modified runs where storms maintain a higher …
Present Situation And Prospects Of Tourism Resource Evaluation In Abandoned Mining Areas, Wang Qiuju, Wang Yue, Ma Yuying, Zhang Bo
Present Situation And Prospects Of Tourism Resource Evaluation In Abandoned Mining Areas, Wang Qiuju, Wang Yue, Ma Yuying, Zhang Bo
Coal Geology & Exploration
The identification and evaluation of tourism resources are important basis for tourism planning and development in abandoned mining areas. This paper adopts literature review method and inductive analysis method to comprehensively sort out the domestic and foreign research results on the value evaluation of tourism resources in abandoned mining areas, and systematically analyze the identification, evaluation system construction and evaluation methods of tourism resources in abandoned mining areas. It is found that the current understanding of tourism resources in abandoned mining areas is only at the level of mining relics and mining heritage, lacking emphasis on the natural resources such …
Research On Redevelopment Model Of Abandoned Mining Land From The Perspective Of Property Right Policy, Deng Yuanyuan, Chang Jiang, Feng Shanshan, Zhou Xue
Research On Redevelopment Model Of Abandoned Mining Land From The Perspective Of Property Right Policy, Deng Yuanyuan, Chang Jiang, Feng Shanshan, Zhou Xue
Coal Geology & Exploration
The reuse of abandoned mines has become the main path for resource-based cities to realize functional transformation. The redevelopment of mining land belongs to the renewal of urban stock industrial land, which is a spatial transformation process accompanied by property right transfer. The research on the evolution of the relationship between relevant property rights policies and abandoned mine redevelopment model is helpful to understand the impact of the policy and put forward suggestions for future policies. This paper combs the national and local property rights policies since 1990, takes the redevelopment practice in different times of this period as an …
The Characteristics And Dynamic Mechanism Of Regional Development And Evolution Of Pan’An Lake, Chang Jiang, Chen Yedong, Li Zixuan, Wang Hui, Feng Shanshan
The Characteristics And Dynamic Mechanism Of Regional Development And Evolution Of Pan’An Lake, Chang Jiang, Chen Yedong, Li Zixuan, Wang Hui, Feng Shanshan
Coal Geology & Exploration
Coal mining activities will directly or indirectly affect the development and evolution of cities and their characteristics. Jiawang District of Xuzhou used to be an important coal production base in China, and Pan’an Lake region is the main area of Jiawang coal production. This paper takes Pan’an Lake region as the research object, analyzes the characteristics of its development and evolution under the influence of coal mining activities, selects social environment, economic development, policy control and resource environment as the driving factors affecting the development and evolution of the area, and uses principal component analysis to determine the main driving …
P-Flux: A Phosphorus Budget Dataset Spanning Diverse Agricultural Production Systems In The United States And Canada, M. R. Williams, P. Welikhe, J. Bos, K. King, M. Akland, D. J. Augustine, C. Baffaut, E. G. Beck, A. Bierer, D. D. Bosch, Elizabeth H. Boughton, C. B. Brandani, E. Brooks, Anthony R. Buda, M. Cavigelli, J. Faulkner, G. Feyereisen, A. Fortunato, B. Lee, Jason M. Unrine
P-Flux: A Phosphorus Budget Dataset Spanning Diverse Agricultural Production Systems In The United States And Canada, M. R. Williams, P. Welikhe, J. Bos, K. King, M. Akland, D. J. Augustine, C. Baffaut, E. G. Beck, A. Bierer, D. D. Bosch, Elizabeth H. Boughton, C. B. Brandani, E. Brooks, Anthony R. Buda, M. Cavigelli, J. Faulkner, G. Feyereisen, A. Fortunato, B. Lee, Jason M. Unrine
Plant and Soil Sciences Faculty Publications
No abstract provided.
Green Transformation Paths Of Closed Coalmine Industrtry In Coal Resources Cities, Zhang Lifeng, Wang Qiuju
Green Transformation Paths Of Closed Coalmine Industrtry In Coal Resources Cities, Zhang Lifeng, Wang Qiuju
Coal Geology & Exploration
With the implementation of China's energy supply-side structural reform and coal production capacity policy, the number of coal mines closed in China is increasing year by year, and how to transform the industry after the closure of coal mines has become an urgent problem. Most of the closed coal mines are concentrated in coal resource-based cities, and the development of closed coal mines is inseparable from the development of coal resource-based cities. The selection of their advantageous industries should be consistent with the direction of industrial transformation of the cities where they are located, so as to to make effective …
Modeling Air Pressure Propagation Through Wind Cave And Jewel Cave: How Can Air Pressure Signals Inside Barometric Caves Be Predicted From Surface Pressure Measurements?, Annika K. Gomell, Andreas Pflitsch
Modeling Air Pressure Propagation Through Wind Cave And Jewel Cave: How Can Air Pressure Signals Inside Barometric Caves Be Predicted From Surface Pressure Measurements?, Annika K. Gomell, Andreas Pflitsch
International Journal of Speleology
Recent speleoclimatological research has shed new light on air pressure dynamics inside barometric caves by identifying pressure-modifying processes and resulting systematic differences between cave and surface air pressure. Based on these new findings, a multi- step quantitative model is developed and explored to predict air pressure inside Wind Cave and Jewel Cave – two major barometric cave systems in the Black Hills of South Dakota, USA – from external surface measurements. Therefore, each identified speleoclimatological pressure process is translated into a mathematical operation. Model evaluation based on Pearson correlation and mean (absolute) deviation between model outputs and control measurements yields …
Isotopic Study Of The Waters From The Sulphur Springs Catchment, Tampa, Florida, Esra Zengin
Isotopic Study Of The Waters From The Sulphur Springs Catchment, Tampa, Florida, Esra Zengin
USF Tampa Graduate Theses and Dissertations
A stable isotope study was carried out using precipitation, spring water, groundwater well sample, and a seawater sample during the wet season in the Sulphur Springs watershed in Tampa, Florida. Studies that track long term isotopic variation over wet seasons are limited in the region. To fill this knowledge gap, this study aims to quantify the contributions of precipitation and diffuse sources to discharge in Sulphur Springs. A three-component mixing model was applied using δ18O and δ2H values to determine different source water contributions to spring water discharge. The three-component mixing model calculations suggest spring water consists mainly of diffuse …
Thickness Of Fluvial Deposits Records Climate Oscillations, Xiaoping Yuan, Laure Guerit, Jean Braun, Delphine Rouby, Charles Shobe
Thickness Of Fluvial Deposits Records Climate Oscillations, Xiaoping Yuan, Laure Guerit, Jean Braun, Delphine Rouby, Charles Shobe
Faculty & Staff Scholarship
Fluvial deposits offer Earth’s best-preserved geomorphic record of past climate change over geological timescales. However, quantitatively extracting this information remains challenging in part due to the complexity of erosion, sediment transport and deposition processes and how each of them responds to climate. Furthermore, sedimentary basins have the potential to temporarily store sediments, and rivers subsequently rework those sediments. This may introduce time lags into sedimentary signals and obscure any direct correlation with climate forcing. Here, using a numerical model that combines all three processes—and a new analytical solution—we show that the thickness of fluvial deposits at the outlet of a …
Adjustment Of Precipitation Measurements Using Total Rain Weighing Sensor (Trws) Gauges In The Cryospheric Hydrometeorology Observation (Choice) System Of The Qilian Mountains, Northwest China, Zhao Yanni, Chen Rensheng, Han Chuntan, Wang Lei
Adjustment Of Precipitation Measurements Using Total Rain Weighing Sensor (Trws) Gauges In The Cryospheric Hydrometeorology Observation (Choice) System Of The Qilian Mountains, Northwest China, Zhao Yanni, Chen Rensheng, Han Chuntan, Wang Lei
Journal of Arid Land
Precipitation is one of the most important indicators of climate data, but there are many errors in precipitation measurements due to the influence of climatic conditions, especially those of solid precipitation in alpine mountains and at high latitude areas. The measured amount of precipitation in those areas is frequently less than the actual amount of precipitation. To understand the impact of climatic conditions on precipitation measurements in the mountainous areas of Northwest China and the applicability of different gauges in alpine mountains, we established a cryospheric hydrometeorology observation (CHOICE) system in 2008 in the Qilian Mountains, which consists of six …
Identifying Water Vapor Sources Of Precipitation In Forest And Grassland In The North Slope Of The Tianshan Mountains, Central Asia, Chen Haiyan, Chen Yaning, Li Dalong, Li Weihong, Yang Yuhui
Identifying Water Vapor Sources Of Precipitation In Forest And Grassland In The North Slope Of The Tianshan Mountains, Central Asia, Chen Haiyan, Chen Yaning, Li Dalong, Li Weihong, Yang Yuhui
Journal of Arid Land
Identifying water vapor sources in the natural vegetation of the Tianshan Mountains is of significant importance for obtaining greater knowledge about the water cycle, forecasting water resource changes, and dealing with the adverse effects of climate change. In this study, we identified water vapor sources of precipitation and evaluated their effects on precipitation stable isotopes in the north slope of the Tianshan Mountains, China. By utilizing the temporal and spatial distributions of precipitation stable isotopes in the forest and grassland regions, Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model, and isotope mass balance model, we obtained the following results. (1) The …
A Tectonic Geomorphic Study Of Neotectonics And Seismic Hazard Of The Fold And Thrust Belt Complex Of Bengal Basin, Eastern Himalayan Range, Niroj Shrestha
A Tectonic Geomorphic Study Of Neotectonics And Seismic Hazard Of The Fold And Thrust Belt Complex Of Bengal Basin, Eastern Himalayan Range, Niroj Shrestha
Masters Theses & Specialist Projects
Tectonic activity continues to shape and create challenges for human populations in tectonically active areas. The Bengal Basin is one of the most important sedimentary basins of the Eastern Himalayan Range, aiding in one of the densely populated regions of the world. The basin is part of the tectonically active Himalayan Orogen that is undergoing oblique subduction between the Eurasian Plate and the Indian Plate. As a result of this subduction-related convergence, the eastern part of the Basin, particularly the Chittagong-Tripura Fold Belt (CTFB) and western part of the Indo-Burman Range (IBR) has structurally deformed into a series of mostly …
A Remote Sensing And Machine Learning-Based Approach To Forecast The Onset Of Harmful Algal Bloom (Red Tides), Moein Izadi
A Remote Sensing And Machine Learning-Based Approach To Forecast The Onset Of Harmful Algal Bloom (Red Tides), Moein Izadi
Dissertations
In the last few decades, harmful algal blooms (HABs, also known as “red tides”) have become one of the most detrimental natural phenomena all around the world especially in Florida’s coastal areas due to local environmental factors and global warming in a larger scale. Karenia brevis produces toxins that have harmful effects on humans, fisheries, and ecosystems. In this study, I developed and compared the efficiency of state-of-the-art machine learning models (e.g., XGBoost, Random Forest, and Support Vector Machine) in predicting the occurrence of HABs. In the proposed models, the K. brevis abundance is used as the target, and 10 …
Changes In Demographic Factors’ Influence On Regional Productivity Growth: Empirical Evidence From China, 2000–2010, Xiaoxi Wang, Yaojun Zhang, Danlin Yu, Xiwei Wu, Ding Li
Changes In Demographic Factors’ Influence On Regional Productivity Growth: Empirical Evidence From China, 2000–2010, Xiaoxi Wang, Yaojun Zhang, Danlin Yu, Xiwei Wu, Ding Li
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Improving total factor productivity is an important way for China’s economy to avoid the middle income trap. Demographic changes are believed to have significant impacts on productivity growth. Using the census and socioeconomic data of 358 prefecture cities in mainland China, this paper analyzes the changes in the global and local spatial dependence of total factor productivity. We then employ spatial regression methods to investigate the role of changes in population factors in productivity growth in 2000 and 2010. We draw three observations from the analysis. First, population density plays an important role in both years. There is an inverted …