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Characterization of a small high-Arctic glacier system via historical observations and numerical modelling

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Title: Characterization of a small high-Arctic glacier system via historical observations and numerical modelling
Author(s): Vainio, Tomi
Contributor: University of Helsinki, Faculty of Science
Degree program: Master's Programme in Atmospheric Sciences
Specialisation: Geophysics of the Hydrosphere
Language: English
Acceptance year: 2022
Abstract:
Small arctic glaciers have in general been consistently neglected with respect to the collection of long time-series observations. Available data is often a product of multiple independent and separate studies, thus gaps in the data sets are common. Numerical modelling provides one solution to alleviate existing gaps in knowledge, while historical observations can be used to assess model accuracy. The Foxfonna ice cap and associated glacier were investigated with the aid of the numerical modelling software, Elmer/Ice. The goal was to reproduce core glaciological characteristics of the entire glacier system from a 3D simulation based on multiple digital elevation models (DEMs) between the years 1961-2021. The methods proved capable of providing additional information on the glaciological characteristics of a small glacier system, such as Foxfonna. Issues primarily arose from the steady state assumption and the difficulty of producing simulations for a dynamically varying glacier system.
Keyword(s): jäätikkö numeerinen mallinnus elmer ice jää svalbard huippuvuoret foxfonna


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