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norskFakultet for naturvitenskap og teknologi
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Investigation of Polar Mesospheric Summer Echoes observed with the EISCAT VHF radar
(Master thesis, 2025)During the summer months at high and mid-latitudes, VHF and UHF radars can detect strong radar echoes, known as Polar Mesospheric Summer Echoes (PMSE), at altitudes between 80 and 90 km. The formation of PMSE is closely linked to the presence of ice particles, turbulence, and irregularities in the electron density. Current theories suggest that neutral turbulence causes the spatial structuring of ... -
Numerical simulations of sheath-interchange turbulence at the boundary of magnetically confined plasmas
(Master thesis, 2025)Controlled thermonuclear fusion holds great potential as an abundant, safe and environmentally friendly source of electrical energy. One of the most promising approach to harness fusion energy is trough the use of tokamak, a machine with a strong toroidal magnetic field. However the intrinsic curvature of the tokamak leads to an interchange instability, akin to the Rayleigh Taylor instability, in ... -
Variability of Circulation and Water Masses in Kvitøya Trough
(Master thesis, 2025)The physical environment of the northern Barents Sea is shaped by the inflow of warm, saline Atlantic Water (AW) and the seasonal cycle of sea ice. Recent years have seen a rapid shift toward more Atlantic conditions, driven by reduced sea ice import and increased influence of AW intrusions. Although seasonal variability is crucial for understanding these changes, observations from the ice-covered ... -
Comparison between high-resolution large-eddy simulation (LES) of atmospheric flows and the WindNinja wind downscaling algorithm, emphasizing Lagrangian coherent structures to enhance predictions for snow redistribution in alpine environments.
(Master thesis, 2025)Avalanche forecasters, hydrologists and winter recreationalists are asking themselves the same question: where is the snow on the mountain. Unfortunately, snow distribution is a highly complex area of research due to the turbulent behavior of atmospheric flow. The structural organization of the flow can be analyzed via Lagragian coherent structure (LCS) methods, such as finite-time Lyapunov exponents ... -
Controlling mechanisms of shallow fluid accumulations in the Veslemøya High, Bjørnøyrenna and Ringvassøya-Loppa Fault Complexes, SW Barents Sea
(Master thesis, 2025)The southwest Barents Sea is a large sub-province within the Greater Barent Sea, an extensive epicontinental shelf that stretches from the northern coast of Norway, northward to Svalbard, and eastward to Franz Josef Land in Russia. This region has undergone a complex geological evolution, with phases of tectonic activity during the Paleozoic to Early Cenozoic. In the late Cenozoic, it was through ... -
Geological Investigation of the Polaris CO₂ Storage Prospect in the Barents Sea
(Master thesis, 2025)This thesis investigates the Polaris prospect in the southwestern Barents Sea as a potential site for geological CO₂ storage. The study’s objectives were to (1) map the storage complex, (2) assess reservoir and seal suitability, (3) estimate storage capacity, and (4) evaluate leakage potential through the regional fault system. To achieve this, 3D seismic data were interpreted in Petrel alongside ... -
Halomonas sp. MC140, a polyhydroxyalkanoate (PHA) producer isolated from the Arctic environment
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-07-03)Polyhydroxyalkanoates (PHA) are biobased and biodegradable polyesters with potential to replace petroleum-based plastics or for use as feed in aquaculture. In this study, Halomonas sp. MC140 was isolated from the Arctic littoral environment in Norway and characterized in terms of PHA production. Phylogenetic analysis of the draft genome sequence placed the strain as closely related to Halomonas ... -
Fragmentation and Volatile Depletion in Meteor Head Echo Measurements
(Master thesis, 2025)The main source of mass influx to Earth is thought to come from microgram sized meteoroids. These micro-meteoroids are indirectly detectable by high powered large aperture radars through the plasma they generate while ablating. A subset of meteor head echoes is known to contain abrupt drops in radar cross section (RCS). These drops can indicate meteor fragmentation, depletion of volatile elements, ... -
Seasonal sea ice characterized the glacial Arctic-Atlantic gateway over the past 750,000 years
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-07-04)The past occurrence of an extreme ~1-kilometer–thick Arctic Ocean–Nordic Seas ice shelf has been inferred from submarine landscape features and geochemical records, although fundamental aspects of its characteristics, impacts, and timing remain highly debated. Here, we challenge this pan-Arctic glaciation hypothesis by investigating two sites from the Arctic-Atlantic gateway (AAG) and the Nordic ... -
Controls of sediment-bound and dissolved nutrient transport from a glacierised metasedimentary catchment in the high Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-06-16)Rapid warming in polar and alpine areas is causing significant glacier mass loss and resulting in increasing freshwater delivery to the oceans. Recent research indicates that higher meltwater water runoff is likely to increase solute and sediment transport, which will include nutrients, to downstream environments. This enhanced delivery may drive a negative feedback effect on atmospheric CO<sub>2</sub> ... -
Can the Temperature of Feet Be Affected by Using Insoles with Elevated Points? An Experiment in Cold Environments
(Master thesis; Mastergradsoppgave, 2020-07-09)The projects aim was to find out if it is possible to increase temperature (research question 1), slow down the declining temperature (research question 2) or increase the subjective comfort related to temperature (research question 3) of feet while using insoles with elevated points, compared with using insoles without elevated points, in a cold environment. Six test subjects participated in an ... -
Chronolock: Causal Time-Ordering with Blockchain Smart Contracts
(Master thesis, 2025)Distributed systems struggle with synchronization, especially when components must agree on the order of events across application or trust boundaries. Without clear causal ordering, systems can become vulnerable to inconsistencies, coordination failures, and auditability issues. This thesis presents \textbf{Chronolock}, a blockchain-hybrid system that enforces causal-time ordering across distributed ... -
Fault and Fracture Patterns with Linkage to Fluid Migration in the Shallow Subsurface: A 3D Seismic Study along a transect of the Western Barents Sea
(Master thesis, 2025)This thesis investigates shallow subsurface deformation patterns and their relationship to fluid migration and glacial processes in the southwestern Barents Sea. The study focuses on four key areas: Lyngenfjorden, Hammerfest Basin, Bjørnøyrenna, and Storfjordrenna. Using high-resolution P-Cable 3D seismic data and interpretation tools in Petrel, the objective was to identify faults, fractures, and ... -
Enhanced fish performance and biosecurity by manipulation of the natural microbiome of Atlantic salmon
(Research report; Forskningsrapport, 2025)The project aimed to enhance Atlantic salmon's performance and biosecurity by manipulating their microbiome. The study investigated whether specific seawater bacteria from healthy salmon skin could improve smolts' survival after seawater transfer. Scale-explants were used to study host-bacterial interactions. Although some bacteria showed probiotic potential, they did not significantly reduce ... -
Artificial Intelligence to Improve Clinical Coding Practice in Scandinavia: Crossover Randomized Controlled Trial
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-07-03)Background: Clinical coding is critical for hospital reimbursement, quality assessment, and health care planning. In Scandinavia, however, coding is often done by junior doctors or medical secretaries, leading to high rates of coding errors. Artificial intelligence (AI) tools, particularly semiautomatic computer-assisted coding tools, have the potential to reduce the excessive burden of administrative ... -
The early-mid Quaternary development of the Bjørnøyrenna Trough Mouth Fan reconstructed from 3D-seismic data
(Master thesis, 2025)The early-mid Quaternary development of the Bjørnøyrenna Trough Mouth Fan is studied using 3D seismic data. The stratigraphy is divided into three seismic units; unit A (oldest) to C and is correlated to previously established stratigraphic frameworks in the Barents Sea. The reflection configuration and the geometry of the units, in combination with geophysical attribute analysis form the basis for ... -
3D-Seismic investigation of Fluid Flow and Faulting in the western margin of the SW Barents Sea, southern Sørvestsnaget Basin along the Senja Ridge
(Master thesis, 2025)The southwestern Barents Sea margin has attracted growing interest due to its hydrocarbon potential. However, the dynamics of its shallow subsurface fluid systems remain poorly understood. This thesis investigates fluid migration, faulting, and shallow gas accumulations within the southern Sørvestsnaget Basin adjacent to the Senja Ridge, using high-quality 3D seismic data (Carlsen3D) in combination ... -
Study of shallow gas and gas hydrate dynamics around the Hinlopen slide: Insights from multi-channel seismic velocity and AVO analysis
(Master thesis, 2025)The Hinlopen submarine slide located on the northern Svalbard margin is one of the largest submarine slides documented to date. The cause of the slide is associated with destabilizing factors like glacio-tectonic activity, isostacy, gas accumulation, gas hydrate dynamics, and rapid sediment loading in interglacial periods. Free gas accumulation within continental slope sediments is one of the most ... -
3D-seismic interpretation of fluid flow systems and faulting in the Sørvestsnaget Basin and the Veslemøy High, SW Barents Sea
(Master thesis, 2025)The southwestern Barents Sea encompasses a large part of the Norwegian Continental Shelf (NCS), expressing a complex geological history. The area is characterized by a series of rifting episodes from the Mesozoic and Paleozoic eras, along with more recent glacial impacts from the Late Cenozoic and the Quaternary period. The SW Barents Sea has experienced erosion and uplift, with large depocenters ... -
Relationship between faulting and fluid migration in and around Leirdjupet Fault Complex
(Master thesis, 2025)This study investigates the spatial relationship between ice-flow direction (inferred from Mega-Scale Glacial Lineations, MSGLs) and subvertical amplitude anomalies in the southwestern Barents Sea. The focus area is in and around the Leirdjupet Fault Complex, a tectonic boundary separating the Bjørnøya Basin from the Fingerdjupet Subbasin. Interpretation of a 3,757 km² 3D seismic cube, complemented ...
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