Modeling saline fluid flow in subglacial ice-walled channels

dc.contributor.advisorChairperson, Graduate Committee: Scott McCallaen
dc.contributor.authorJenson, Amy Joen
dc.date.accessioned2024-01-02T23:06:34Z
dc.date.available2024-01-02T23:06:34Z
dc.date.issued2022en
dc.description.abstractSubglacial hydrological systems have impacts on ice dynamics as well as nutrient and sediment transport. There has been an extensive effort to understand the dynamics of subglacial drainage through numerical modeling, however these models have focused on freshwater, neglecting the consideration of brine. Saline fluid can exist in cold-based glacier systems where freshwater cannot. Therefore, there exist subglacial hydrological systems where the only fluid is brine. Understanding the routing of saline fluid is important for understanding geochemical and microbiological processes in these saline cryospheric habitats. In this thesis, I present a model of channelized drainage from a hypersaline subglacial lake and highlight the impact of saline fluid on melt rates in an ice-walled channel. The model results show that channel walls grow more quickly when fluid contains higher salt concentrations, which results in greater peak discharge and faster drainage for a fixed lake volume. This model provides a framework to assess the relative impact of brine on discharge and drainage duration.en
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/18210
dc.language.isoenen
dc.publisherMontana State University - Bozeman, College of Letters & Scienceen
dc.rights.holderCopyright 2022 by Amy Jo Jensonen
dc.subject.lcshGlaciersen
dc.subject.lcshSaline watersen
dc.subject.lcshHydrologyen
dc.subject.lcshMathematical modelsen
dc.titleModeling saline fluid flow in subglacial ice-walled channelsen
dc.typeThesisen
mus.data.thumbpage21en
thesis.degree.committeemembersMembers, Graduate Committee: Jack D. Dockery; Lisa Davis; Mark L. Skidmore; Tianyu Zhangen
thesis.degree.departmentMathematical Sciences.en
thesis.degree.genreThesisen
thesis.degree.nameMSen
thesis.format.extentfirstpage1en
thesis.format.extentlastpage62en

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