Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
Geophysical Investigation Of Icy Debris Fans With Ground Penetrating Radar, Southern Alps, New Zealand, Erica May Rubino
Geophysical Investigation Of Icy Debris Fans With Ground Penetrating Radar, Southern Alps, New Zealand, Erica May Rubino
Honors Theses
Degradation of ice caps has begun to alter alpine periglacial regions, resulting in the exposure of bedrock escarpments, and in the occurrences of mass-flow processes. These mass wasting processes include ice avalanches, rockfalls, slushflows, and icy debris flows, and can result in the development of poorly understood landforms known as icy debris fans. Icy debris fans are formed at the base of escarpments along the margins of valley glaciers. According to a 2013 study in New Zealand, fan surfaces are dominated by ice and lithic material derived from ice avalanches, which constitute >90% of mass flows annually. Depositional processes over …
Monitoring Stormwater Redistribution Into Low Resistivity Soils Using Noninvasive Geophysical Techniques, Jonathan Algeo
Monitoring Stormwater Redistribution Into Low Resistivity Soils Using Noninvasive Geophysical Techniques, Jonathan Algeo
Honors Theses
Water held in the unsaturated zone is important for agriculture and construction and is replenished by infiltrating rainwater. Monitoring the soil water content of clay soils using ground-penetrating radar (GPR) has not been researched, as clay soils cause attenuation of GPR signal. In this study, GPR common-midpoint soundings (CMPs) are used in the clayey soils of the Miller Run floodplain to monitor changes in the soil water content (SWC) before and after rainfall events. GPR accomplishes this task because increases in water content will increase the dielectric constant of the subsurface material, and decrease the velocity of the GPR wave. …
Geophysical Analysis Of Seasonal Montandon Gravel Ridge Water Table Fluctuation And Moisture Gradient Variation Due To Storm Events, Annie Strader
Geophysical Analysis Of Seasonal Montandon Gravel Ridge Water Table Fluctuation And Moisture Gradient Variation Due To Storm Events, Annie Strader
Honors Theses
The purpose of this research project is to continue exploring the Montandon Long-Term Hydrologic Research Site(LTHR) by using multiple geophysical methods to obtain more accurate and precise information regarding subsurface hydrologic properties of a local gravel ridge,which are important to both the health of surrounding ecosystems and local agriculture. Through using non-invasive geophysical methods such as seismic refraction, Direct Current resistivity and ground penetrating radar (GPR) instead of invasive methods such as boreholedrilling which displace sediment and may alter water flow, data collection is less likely to bias the data itself. In addition to imaging the gravel ridge subsurface, another …