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dc.contributor.authorRichards, Elizabeth M.
dc.date.accessioned2021-12-01T22:29:51Z
dc.date.available2021-12-01T22:29:51Z
dc.date.issued2021-05
dc.identifier.urihttp://hdl.handle.net/11122/12566
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2021en_US
dc.description.abstractIce roads and bridges are necessary routes to transport heavy equipment, supplies and food in the winter months to and from isolated cold region communities off the road system. Ice roads allow for community members to avoid the high costs of air shipments and obtain equipment and vehicles that would otherwise not be available. These ice roads traverse frozen bodies of water (e.g., rivers, estuaries, and lakes), and require extreme safety when driving over. To achieve this, calculations are frequently completed to determine the maximum acceptable loading on the ice cover. River ice tends to have increased safety concerns and uncertainty for travel that stem from warmer air temperatures and other factors such as precipitation, snow drifting, and ice cover forming differently each year. The necessity of obtaining time intensive ice thickness measurements by hand puts the responsible personnel at considerable risk of injury or fatality. Ground penetrating radar (GPR), which has gained much popularity in the last few decades, is a quicker and more effective non-invasive method for measuring ice thickness and other properties. The GPR system was tested for its accuracy in measuring ice thickness on common transportation routes on the Yukon River and the Tanana River. Identification of varying ice type layers in river ice cover using GPR was also attempted. While layers could not be identified using the 450 MHz and 750 MHz central frequency antennas, an accuracy analysis of GPR ice thickness measurements under various environmental conditions was completed. This analysis contributes to a comprehensive understanding of the safety of ice roads for community members in remote northern villages and provides the basis for further research on identifying layers in river ice cover.en_US
dc.description.sponsorshipPacific Northwest Transportation Consortium award number 69A3551747110 and the US Department of Transportation University Transportation Center program, award number 69A3551747129 through the Center for Safety Equity in Transportationen_US
dc.language.isoen_USen_US
dc.subjectIce crossingsen_US
dc.subjectInterior Alaskaen_US
dc.subjectGround penetrating radaren_US
dc.subjectIce roadsen_US
dc.subject.otherMaster of Science in Civil Engineeringen_US
dc.titleAn evaluation of GPR techniques for analyzing the safety of Interior Alaskan ice roads under varying river ice and environmental conditionsen_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentDepartment of Civil, Geological and Environmental Engineeringen_US
dc.contributor.chairStuefer, Svetlana
dc.contributor.committeeMaio, Chris
dc.contributor.committeeBelz, Nathan
dc.contributor.committeeDaanen, Ronald


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