Browsing by Author "Shepherd, Stephanie"

Now showing items 1-16 of 16

Adaptation and Comparison of Machine Learning Methods for Geomorphological Mapping and Terrace Prediction: A Case Study of the Buffalo River, Arkansas

Swan, Benjamin (2017-05-31)

Working with a high-resolution LiDAR dataset, this research adapts existing techniques from machine learning to the problem of predicting general and specific geomorphic features in the complex terrain of the Buffalo River ...

Analysis of the D’Olive Creek Watershed: Identifying the Local Drivers That Have led to Stream Degradation

Salisbury, Michael (2018-04-26)

Anthropogenic activities have influenced the characteristics of streams and tributaries throughout the Southeastern U.S., correlating with varying levels of degradation and prompting major restoration activities. This ...

Evaluation of Photogrammetry at Different Scales

Duke, Caleb (2018-04-30)

Accelerated erosion is amplified by anthropogenic effects, which can lead to changes in stream geometry. Stream topography measurements over time quantify stream bank erosion. The goals of this project are to evaluate ...

Exploring and Measuring the Teaching and Development of Earth Systems Thinking Skills in Undergraduate Geoscience Courses

Soltis, Nicholas (2020-04-24)

The understanding of the development of Earth systems thinking (EST) is a major challenge in the field of geoscience education. Major questions exist relating to systems thinking teaching practices, student conceptions ...

Exploring the use of ground penetrating radar for determining floodplain function of restored streams in the Gulf Coastal Plain, Alabama

Eckes, Samantha (2018-05-01)

Accurately characterizing subsurface structure and function of remediated floodplains is indispensable in understanding the success of stream restoration projects. Although many of these projects are designed to address ...

Geomorphic and Sedimentologic Analysis of Four Streams in Southeastern Alabama: Channel and Habitat Response to Changes in Land Use

Le Blanc, Lainey (2016-12-09)

Streams of the Southeastern US have varying degrees of degradation due to the long history of agricultural land use, reflected in incising and eroding banks with aggradation of fine grained legacy sediment. These effects ...

Ground-Penetrating Radar (GPR) Survey and Spatial Analysis of the George and Addie Giddens Cemetery, Opelika, AL

Malloch, Hayden (2022-04-26)

Recent interest in locating and preserving the cemeteries of enslaved African Americans has increased the need for non-invasive geophysical techniques and efficient methodologies. The southeast United States provides many ...

Insights on Coarse Sediment Routing in Tributaries of the Buffalo National River, AR

Brooks, Ryan (2023-11-28)

Sediment routing studies are of particular importance to understanding geomorphic changes in fluvial systems. Although tributary-derived sediment inputs serve as primary sources of sediment in main stems, few in-situ studies ...

Investigation of a Novel Application of Optically Stimulated Luminescence (OSL) for Sediment Fingerprinting

Hicks, Taryn (2023-04-26)

Optically Stimulated Luminescence (OSL) is a tool that is commonly used to measure the length of time a quartz or feldspar grain has been buried in a sediment deposit. Recently there have been advances in using OSL as ...

Irrigation and Certificate of Use Compliance in the Wiregrass Region of Alabama

Barbre, Nicholas (2017-04-24)

Alabama passed the Water Resources Act of 1993 that included a Certificate of Use (CoU) program for users that have the capacity to withdraw 100,000 gallons per day or more. However, there is concern that some irrigation ...

Irrigation and Water Use Reporting in the Tennessee Valley Region of Alabama

Roland, Jarrett (2019-06-27)

Irrigation is the largest consumptive use of water in the United States. Accurate monitoring of water use for irrigation is critical for a state to sustainably manage its water resources. Federal programs provide valuable ...

Prescribed Fire Effects on Soil Properties and Nutrient Dynamics in a Longleaf Pine Forested Wetland Watershed

Molina Serpas, Lidia (2022-11-29)

In a geographically isolated wetland (GIW) area, located in Georgia, longleaf pine forests have been experiencing frequent rotational prescribed burning for more than 10 years. In general, because wetlands provide ecosystem ...

Sediment and Nutrient Transport Through a Reservoir Sequence Along a Large River System

Webster, Benjamin (2019-07-23)

Reservoirs are depositional environments for suspended sediments in river systems. Due to sediments undergoing fallout in low-flow areas, reservoirs contain 26% of all sediment and 12% of global river phosphorus behind ...

Spatiotemporal Analysis of Ecosystem Degradation in a Gulf of Mexico Estuary System

Metz, Alexander (2019-05-14)

Coastal estuaries are a vital resource that provide many environmental and socioeconomic benefits. Despite their value, increased anthropogenic influence has resulted in ecosystem degradation due to eutrophication in coastal ...

Testing Erosion Potential of Heterogeneous Lithologies to Understand Atypical Valley Morphology in the Buffalo National River Watershed, Arkansas

Heidner, Niels (2019-04-17)

The effect of heterogeneous lithologies on valley morphology in tectonically stable landscapes is an unresolved question in fluvial geomorphology. The upper reaches of the Buffalo National River incise the Mississippian ...

USING GROUND-BASED LIDAR TO ANALYZE FRACTURE CHARACTERISTICS AS POSSIBLE CONTROLS ON THE VARIABILITY OF VALLEY MORPHOLOGY IN THE BUFFALO RIVER WATERSHED, ARKANSAS

Braun, Jamison (2021-07-19)

The Buffalo National River (BNR) is a bedrock river that incises a sequence of Ordovician and Mississippian sedimentary rocks as it meanders west to east across the southern point of the Ozark Dome. A previous study ...