Firn Characterization of the Accumulation Zone of Kaskawulsh Glacier, Yukon Territory, Canada

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dc.contributor.advisorMarshall, Shawn
dc.contributor.advisorMoorman, Brian J.
dc.contributor.authorOchwat, Naomi
dc.contributor.committeememberGeldsetzer, Torsten
dc.contributor.committeememberShugar, Dan H.
dc.date2019-06
dc.date.accessioned2019-05-06T15:53:50Z
dc.date.available2019-05-06T15:53:50Z
dc.date.issued2019-05-03
dc.description.abstractWhile glacier mass balance studies allow investigation of the changing cryosphere, large ice sheets and remote, glaciated regions often lack the potential for detailed field studies. Remote sensing techniques are applied in mass balance studies, however, these methods are challenged because of their assumptions on density. In spring 2018, I extracted two firn cores (21 m and 36 m) from the accumulation zone of Kaskawulsh Glacier, St. Elias Mountains, Yukon and analyzed refrozen ice layers, snow densification processes, and isotopic and ionic signals. Meltwater percolation and refreezing events are evident in the cores through the quantity of ice layers, the presence of a perennial firn aquifer, and the altered isotope and glaciochemical signatures. These processes resulted in surface lowering of 10 cm/yr and washed out most of the isotope and ion seasonal signal. My study advances understanding in the dynamics of a changing accumulation zone in the St. Elias Icefields.en_US
dc.identifier.citationOchwat, N. (2019). Firn Characterization of the Accumulation Zone of Kaskawulsh Glacier, Yukon Territory, Canada (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/36474
dc.identifier.urihttp://hdl.handle.net/1880/110298
dc.language.isoengen_US
dc.publisher.facultyArtsen_US
dc.publisher.institutionUniversity of Calgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectmountain glacier, firn core, densification, stable isotopes, ions, surface loweringen_US
dc.subject.classificationGeographyen_US
dc.subject.classificationGeologyen_US
dc.subject.classificationPhysical Geographyen_US
dc.subject.classificationEngineering--Environmentalen_US
dc.titleFirn Characterization of the Accumulation Zone of Kaskawulsh Glacier, Yukon Territory, Canadaen_US
dc.typemaster thesisen_US
thesis.degree.disciplineGeographyen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrue
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