Characteristics of an Icing-Dammed Proglacial Lake

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atmire.migration.oldid6124
dc.contributor.advisorMoorman, Brian
dc.contributor.authorBlade, Michelle
dc.contributor.committeememberBeauchamp, Benoit
dc.contributor.committeememberSjogren, Darren
dc.date.accessioned2017-10-04T15:32:40Z
dc.date.available2017-10-04T15:32:40Z
dc.date.issued2017
dc.date.submitted2017en
dc.description.abstractIcing-dammed proglacial lakes form as a result of water-flow pathway restrictions caused by freezing of winter baseflow. With the majority of glaciers in the eastern Canadian High Arctic that previously terminated at sea level now terminating on land (Vaughan et al., 2013), emerging proglacial environments are becoming more common - resulting in the occurrence of novel terrestrial proglacial water flow regimes. This research addressed the knowledge gap of how a glacier, proglacial environment, and hydrological cycle contribute to delayed water-flow, in the form of a proglacial icing-dammed lake, in the terrestrial proglacial environment. The research was conducted at a unique location on Bylot Island, NU, in the eastern Canadian High Arctic, where icing-dammed proglacial lakes have been observed to form multiple years prior. In the proglacial environment, icing development has been studied as proxies to infer winter baseflow from upvalley glacial hydrological networks (Hodgkins et al., 2004; Wainstein, 2011). In addition, icing ablation has been studied as it reallocates a portion of winter streamflow to summer streamflow via icing melt (Reedyk et al., 1995). But icing-dammed lake formation in the proglacial environment remains relatively unexplored due to the uniqueness of their formation. Direct observations, time-lapse photography, lake water level and temperature monitoring, lake bathymetric mapping, and meteorological, electrical conductivity, turbidity, and dye tracing measurements were used to examine the characteristics of an icing-dammed proglacial lake to infer the processes involved for its formation and preservation into the July 2014 summer melt season. Results suggest that the icing-dammed proglacial lake formation is dependent on: the previous year’s icing state at the end of the melt season; the current icing forming a seal with the surrounding topography to restrict water flow and raise local base water level; and the current year’s melt season flow regime not exceptionally exceeding the current icing’s melt thereby allowing water to pool and form a lake.en_US
dc.identifier.citationBlade, M. (2017). Characteristics of an Icing-Dammed Proglacial Lake (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25255en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/25255
dc.identifier.urihttp://hdl.handle.net/11023/4211
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
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.
dc.subjectPhysical Geography
dc.subject.othericing
dc.subject.otherdam
dc.subject.otherlake
dc.subject.otherproglacial
dc.subject.otherspring
dc.subject.otherArctic
dc.subject.otheremerging
dc.subject.otherpolythermal
dc.titleCharacteristics of an Icing-Dammed Proglacial Lake
dc.typemaster thesis
thesis.degree.disciplineGeography
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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