Show simple item record

dc.contributor.advisorJacobsen, Svein Ketil
dc.contributor.authorJenssen, Rolf-Ole Rydeng
dc.date.accessioned2017-06-07T11:21:11Z
dc.date.available2017-06-07T11:21:11Z
dc.date.issued2016-12-14
dc.description.abstractThe focus of this thesis is to find and verify a non-invasive method to determine the layer distribution (stratigraphy) in snowpacks, which might aid avalanche risk assessment. Slab avalanches release due to failure and collapse in a weak snow layer. Determining the spatial distribution and depth of weak layers in avalanche starting zones is a high-risk task. Moreover, by manually digging snow pits, the occurrence of a weak layer can only be identified on a pit scale. We, therefore, propose a technical solution to this problem by mounting an ultra wideband radar system onto an unmanned aerial vehicle to obtain information about weak layers over a larger area and improve safety for avalanche professionals. During 2016, we have operated the radar system via a stationary platform 1 m above the snow, along 4.2 m long transects. For verification, we dug a full snowpit and used snow measurement probes (Avatech SP2 and Toikka SnowFork) to measure snow depth, liquid water content and density, as well as snow stratigraphy. Results show an average correlation between radar and in situ measurements of 0.97 and RMS error of 2.48 cm when extracting the most prominent transitions in the snow. The method developed in this thesis is tested on different types of snow. Additionally, the radar system is tested as payload on an unmanned aerial vehicle. Future work includes further development of the radar system and airborne measurements on snowpacks.en_US
dc.identifier.urihttps://hdl.handle.net/10037/11117
dc.language.isoengen_US
dc.publisherUiT Norges arktiske universiteten_US
dc.publisherUiT The Arctic University of Norwayen_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2016 The Author(s)
dc.subject.courseIDFYS-3941
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektromagnetisme, akustikk, optikk: 434en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Electromagnetism, acoustics, optics: 434en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Elektronikk: 435en_US
dc.subjectVDP::Mathematics and natural science: 400::Physics: 430::Electronics: 435en_US
dc.subjectVDP::Teknologi: 500::Elektrotekniske fag: 540::Elektronikk: 541en_US
dc.subjectVDP::Technology: 500::Electrotechnical disciplines: 540::Electronics: 541en_US
dc.titleSnow Stratigraphy Measurements With UWB Radaren_US
dc.typeMaster thesisen_US
dc.typeMastergradsoppgaveen_US


File(s) in this item

Thumbnail
Thumbnail

This item appears in the following collection(s)

Show simple item record