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dc.contributor.advisorWinsborrow, Monica
dc.contributor.advisorPatton, Henry
dc.contributor.advisorGreenwood, Sarah
dc.contributor.authorHinrichsen, Teitur
dc.date.accessioned2024-06-12T10:18:52Z
dc.date.available2024-06-12T10:18:52Z
dc.date.issued2024-05-16en
dc.description.abstractThe future stability of modern marine-terminating ice sheets is of great concern as an increased rate of retreat might mark the onset of their collapse. An increased rate of retreat is accompanied by an increase in meltwater and sediment discharge at the ice margin which has prompted research to focus on the drainage system of marine-terminating ice sheets. Recent discoveries of eskers at water-terminating margins of the Eurasian Ice Sheet Complex provide a premise for the study of the palaeo-drainage system during the retreat of the ice margin following the Last Glacial Maximum. This study explores two areas that were covered by water-terminating sectors of the Eurasian Ice Sheet Complex, Hopendjupet in the Barents Sea and Hoburgs Bank in the Baltic Sea, both of which exhibit palaeo-drainage landforms, tunnel valleys, and eskers. A special focus is placed on the study of eskers as they have rarely been described from marine-terminating ice sheets. A new approach to mapping eskers on digital elevation models is presented that allows for a more detailed morphological analysis and statistical description than the traditional method of mapping eskers with lines. The new approach to mapping eskers uses polygons to map the extent of the landforms and a program written in Python is used to extract the length, height, width, and sinuosity of eskers as well as height and width changes along their length. Between Hopendjupet and Hoburgs Bank, a variety of esker types are found (beaded eskers, esker enlargements, esker corridors, complex eskers, and till eskers) representing esker deposition in subglacial and deltaic settings, time-transgressive and synchronous esker formation, and deposition in en- and subglacial channels. Eskers in Hopendjupet exclusively occur in connection to erosional Nye-channels suggestive of a generally erosive drainage system. Till eskers and crevasse-fill ridges on Hoburgs Bank form a geometric and sinuous ridge network that potentially represents the hydro-fracturing of a cold-based polythermal ice margin.en_US
dc.identifier.urihttps://hdl.handle.net/10037/33781
dc.language.isoengen_US
dc.publisherUiT Norges arktiske universitetno
dc.publisherUiT The Arctic University of Norwayen
dc.rights.holderCopyright 2024 The Author(s)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/4.0en_US
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en_US
dc.subject.courseIDGEO-3900
dc.subjecteskeren_US
dc.subjectEurasian Ice Sheet Complexen_US
dc.subjectBarents Sea Ice Sheeten_US
dc.subjectFennoscandian Ice Sheeten_US
dc.subjectHopendjupeten_US
dc.subjectHoburgs Banken_US
dc.subjectMarine-terminating ice sheeten_US
dc.subjectGeometric and sinuous ridge networken_US
dc.titleMarine- and Lacustrine Deposition of Eskersen_US
dc.typeMastergradsoppgavenor
dc.typeMaster thesiseng


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Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)