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dc.contributor.authorStephani, Eva
dc.date.accessioned2018-04-11T23:51:17Z
dc.date.available2018-04-11T23:51:17Z
dc.date.issued2013-05
dc.identifier.urihttp://hdl.handle.net/11122/8279
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2013en_US
dc.description.abstractAn experimental site testing a range of engineering techniques for mitigating permafrost degradation along the Alaska Highway has been established in 2008 at Beaver Creek (Yukon, Canada). Based on the hypothesis that permafrost has a distinctive sensitivity to climate and terrain conditions at a local scale, a geosystem approach, which considers a set of components (e.g. permafrost, embankment, vegetation, hydrology and hydrogeology) and accounts for dynamics within a system, was applied to obtain a better understanding of local permafrost conditions and changes within the system. Therefore, this assessment, for ultimately measuring performance of the mitigation techniques, integrated the permafrost conditions, in terms of cryostratigraphic units and soil properties, with local climate, natural terrain and embankment conditions. The author, who participated in the site establishment, its baseline investigations and monitoring programs, presents here the baseline geosystem studies at the Beaver Creek Road Experimental Site with an emphasis on permafrost.en_US
dc.description.tableofcontentsChapter 1. Introduction -- Chapter 2. Study area background -- 2.1. The Alaska Highway -- 2.2. Geology -- 2.3. Climate, drainage, and vegetation -- 2.4. Permafrost -- 3. Permafrost cryostratigraphy and material properties -- 3.1. Introduction -- 3.2. Methodology -- 3.2.1. Ground ice and soil description -- 3.2.2. Permafrost geotechnical properties -- 3.2.3. Thermal regime -- 3.3. Results -- 3.3.1. Permafrost cryostratigraphy -- 3.3.1. Unit 1 (0 to ~0.5-1.0 m deep) --3.3.1.2. Unit 2 (~0.5-1.0 to ~6.5.-9.0 m deep) -- 3.3.1.3. Unit 3 (~6.5.-9.0 to ~11.0-15.0 m deep) -- 3.3.1.4 Unit 4 (~11.0-15.0 m to>̲ 16 m deep) -- 3.3.1.5. network of buried ice-wedges (2.5 m to>̲ 10.7 m deep) -- 3.3.2. Permafrost geotechnical properties -- 3.3.2.1 Unit 1 (0 to ~0.5-1.0 m deep) -- 3.3.2.2. Unit 2 (~0.5-1.0 to ~6.5-9.0 m deep) -- 3.3.2.2.1 Sub-unit 2A (~0.5-1.0 to 2.0 m deep) -- 3.3.2.2.2 Sub-unit 2B (~2.0 to 4.0 m deep) -- 3.3.2.2.3 Sub-unit 2C (4.0 to ~6.5-9.0 m deep) -- 3.3.2.3 Unit 3 (~6.5-9.0 to ~11.0-15.0 m deep) -- 3.3.2.4 Unit 4 (~11.0-15.0 m to>̲ 16 m deep) -- 3.3.3 Ground thermal regime -- Chapter 4. Climatic and natural terrain conditions -- 4.1. Introduction -- 4.2. Methodology -- 4.3. Results -- 4.3.1 Terrain settings -- 4.3.2. Air temperatures -- 4.3.3. Wind speed and direction -- 4.3.4. Snow -- 4.3.5. Near surface ground temperatures -- Chapter 5. Road embankment conditions -- 5.1. Introduction -- 5.2. Methodology -- 5.2.1. Microtopography measurements for embankment geometry -- 5.2.2. Subsurface investigations of road embankment -- 5.2.3. Representation of road embankment data -- 5.2.3.1. Validation of data -- 5.2.3.2. Digital elevation model (DEM) -- 5.3. Results -- Chapter 6. Synthesis of knowledge -- 6.1. Local environment factors -- 6.2. Cryofacies analysis for engineering purposes -- 6.3. Road embankment and permafrost thermal regime -- 6.4. Conclusions -- References -- Appendices.en_US
dc.language.isoen_USen_US
dc.subjectRoadsen_US
dc.subjectYukonen_US
dc.subjectDesign and constructionen_US
dc.subjectCold weather conditionsen_US
dc.subjectAlaska Highwayen_US
dc.subjectEmbankmentsen_US
dc.subjectPermafrosten_US
dc.subjectFrozen grounden_US
dc.subjectResearchen_US
dc.subjectCivil engineeringen_US
dc.titlePermafrost geosystem assessment at the Beaver Creek Road experimental site (Alaska Highway, Yukon, Canada)en_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentDepartment of Civil and Environmental Engineeringen_US
dc.contributor.committeeShur, Yuri
dc.contributor.committeeFortier, Daniel
dc.contributor.committeeKanevskiy, Mikhail
dc.contributor.committeeConnor, Billy
refterms.dateFOA2020-01-25T02:17:01Z


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