Blar i tittel Mastergradsoppgaver i teknologi - energi, klima og miljø

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    • QRA techniques on dynamic positioning systems during drilling operations in the Arctic: With emphasis on the dynamic positioning operator 

      Pedersen, Runar Nikolai (Master thesis; Mastergradsoppgave, 2015-06-01)
      With the Norwegian government moving the ice edge farther north than ever before, opening for new areas for petroleum exploration, it will need research on how these areas can affect oil and gas operations. A sensitive environment along with the harsh Arctic climate and remote distances means that severe accidents, like blowouts, will have serious impacts and make cleanup and rescue actions to ...

    • RAM analysis of mining equipment and framework for data collection 

      Sneve, Terje (Master thesis; Mastergradsoppgave, 2015-06-01)
      In the mining industry, equipment are continuously increasing in size and complexity. At the same time, the demand for available plants and continuous production has never been higher. The performance of equipment depends on the reliability and maintainability performance of the equipment along with the maintenance supportability, operational conditions, and environmental conditions. In order to ...

    • Remote Sensing of Coastal Waters 

      Nesse, Sandra Susann Solheim (Master thesis; Mastergradsoppgave, 2019-03-01)
      The coastal areas outside Lofoten, Vesterålen and Senja, in the northern Norwegian coast, are known for their incredible nature, majestic mountains and unique fishing communities. This coastal area is known for high marine productivity and an important marine environment, being the home for valuable fish stocks including pollock, haddock, herring and cod. To study the characteristics of coastal ...

    • Renewable Energy Resources: A Case Study on Asko Nord AS 

      Solstad, Sondre (Master thesis; Mastergradsoppgave, 2016-06-01)
      Asko Nord AS i a business located in Ramfjorden just outside of Tromsø. In this theses, their potential to produce electricity from renewable resources at their location is investigated. Wind around the building is to find suitable locations for wind turbines, and to estimate the wind at the wind turbines. The calculations show that in a feasible estimate the wind is able to produce 439 kwh ...

    • Repeatability of P-Cable 3D seismic data 

      Mathisen, Lisa Myreng (Master thesis; Mastergradsoppgave, 2016-05-31)
      The use of 4D time-lapse seismic data is a viable technology for monitoring fluid changes in the subsurface using conventional data, e.g. reservoir exploitation and CO2 storage. In this master thesis, the potential for using high-resolution P-Cable 3D seismic data for 4D time-lapse studies has been evaluated. The P-Cable 3D seismic system is a versatile, lightweight system which employs 24 short ...

    • Reservoir structure and geological setting of the shallow PEON gas reservoir 

      Mikalsen, Håkon (Master thesis; Mastergradsoppgave, 2015-06-01)
      In recent years, the petroleum industry started to look for new, unconventional energy resources. Peon, a shallow gas discovery in the northern North Sea, are being assessed as a possible energy resource. However, there are challenges related to reservoir pressure, sealing mechanism, and fluid migration. In this regard, geophysical and well log analyses is figured out to get a better understanding ...

    • Risk analysis of well control operations considering Arctic environmental conditions 

      Bergan, Håvard Hegg (Master thesis; Mastergradsoppgave, 2015-06-01)
      Oil and gas development in the Arctic is becoming a major focus in the industry today. However, compared to other regions, there is less experience regarding drilling operations in the Arctic environment. This fact raises concerns about high-risk scenarios, which might take place because of the harsh environmental conditions and the effects they have on various phases of operations, equipment and ...

    • Role of hafnium doping concentration on the structural and surface properties of ZnO surfaces 

      Moser, Toni (Master thesis; Mastergradsoppgave, 2019-05-31)
      The presented thesis deals with the characterisation of hafnium doped zinc oxides with focus on the application as transparent conducting film (TCF) or electron transport layer (ETL) in heterojunction solar cells. Atomic force microscopy (AFM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electrical and optical methods have been applied to characterise the examined ...

    • Rossby Wave Changes During the Recent Decades in Mid-Latitude Continents in the Northern Hemisphere 

      Juskenaite, Ieva (Master thesis; Mastergradsoppgave, 2022-06-22)
      Increasing frequency and severity of extreme weather events throughout the recent years is a highly concerning topic. Extreme and unusual weather conditions, such as heat waves, floods and cold spells are causing a major concern for humanity. Agricultural changes, damages in infrastructure and the loss of human lives are some of the extreme weather event consequences, with the most drastic consequences ...

    • SAR imaging and detection of partially coherent targets 

      Lindberg, Stein-Kato (Master thesis; Mastergradsoppgave, 2018-05-23)
      A synthetic aperture radar (SAR) achieves a high azimuth resolution by illuminating targets with multiple pulses and using the Doppler history to synthesize a large antenna. When combining the pulses, it is normally assumed that the targets are stationary, and that their reflectivity is independent of time. The topic of this thesis is the processing of SAR images where the the targets have a ...

    • Seabed depressions in the Ingøydjupet Trough and their relation to buried canyons on the Loppa High, Barents Sea 

      Prytz, Richard (Master thesis; Mastergradsoppgave, 2016-06-13)
      Large seabed depressions in the Ingøydjupet Trough have previously been interpreted to be formed by sub-glacial melt-water. However, fluid migration and gas expulsion occur over large parts of the Barents Sea, which are frequently associated with seabed depressions. This thesis studies how the seabed depressions are related to sub-surface canyons on the southern part of the Loppa High, SW Barents ...

    • Seafloor craters and mounds in the central Barents Sea 

      Isaksen, Nataliia (Master thesis; Mastergradsoppgave, 2016-05-31)
      Multiple giant craters and mounds have been identified in the area of the Upper Bjørnøyrenna in the central Barents Sea from the reflection seismic and echo sounder data. Analysis of seismic and echo sounder data revealed clear connection between these distinct seafloor features and seismic amplitude anomalies. Distribution pattern of the numerous water column anomalies registered in the area and ...

    • Seasonal energy storage for district heating applications, including simulation and analysis of Borehole Thermal Energy Storage systems 

      Bakken, Nils Joakim Døvre (Master thesis; Mastergradsoppgave, 2018-06-18)
      The objective of this thesis is to analyse different energy storage technologies for seasonal energy storage in combination with district heating. Tromsø receives district heating (Kvitebjørn Varme). Their new heating central at Skattøra burn waste from industry and households in Tromsø and this heat is used to heat water. A part of this excess heat is lost to air during summer because of a lower ...

    • A Sensitivity Study of L-Band Synthetic Aperture Radar Measurements to the Internal Variations and Evolving Nature of Oil Slicks 

      Karisari, Vebjørn (Master thesis; Mastergradsoppgave, 2018-06-01)
      This thesis focuses on the use of multi-polarization synthetic aperture radar (SAR) for characterization of marine oil spills. In particular, the potential of detecting internal zones within oil slicks in SAR scenes are investigated by a direct within-slick segmentation scheme, along with a sensitivity study of SAR measurements to the evolving nature of oil slicks. A simple, k-means clustering ...

    • Shallow and Deep Seismic Amplitude Anomalies Indicate Times of Fluid Accumulation and Tectonic Activity in the Barents Sea 

      Pedersen, Magnus (Master thesis; Mastergradsoppgave, 2016-06-01)
      This master thesis studied the 3D-seismic dataset ST0825 located in the southwest Barents Sea. Aiming to map seismic anomalies and faults above and below the Upper Regional Unconformity (URU). The survey partly covers four different structural elements: Finnmark Platform, Tromsø Finnmark Fault Complex, Hammerfest Basin and Ringvassøy Loppa Fault Complex, south to north respectively. These areas ...

    • Shallow fluid seepage systems in the Hammerfest Basin and adjacent Fault complex 

      Tesfay, Yohannes (Master thesis; Mastergradsoppgave, 2015-08-12)
      This study was carried out using three high resolution 3D P-cable seismic datasets to explore shallow gas distribution and possible fluid migration pathways in the Snøhvit field and Ringvassøy-Loppa Fault Complex. The Snøhvit field situated in the center of the Hammerfest Basin is oil and gas field discovered in 1994. Ringvassøy-Loppa Fault complex marks the border between the Hammerfest and Tromsø ...

    • Ship detection products based on complex SAR data in TOPS mode 

      Myrnes, Marianne (Master thesis; Mastergradsoppgave, 2015-06-01)
      With the increasing need for monitoring ship traffic in both coastal and open oceans, ship detection is an important application of synthetic aperture radar (SAR). This thesis investigates image products suitable for ship detection for complex data acquired in Terrain Observation by Progressive Scans (TOPS) mode. The research was based on studying how contrast enhancement algorithms suitable for SLC ...

    • Short-term wind power prediction based on Markov chain and numerical weather prediction models: A case study of Fakken wind farm 

      Jacobsen, Morten (Master thesis; Mastergradsoppgave, 2014-06-02)
      Rising energy demands and a growing focus on sustainable development have made electricity production from wind energy an attractive alternative to fossil fuels. However the natural variability of wind makes it challenging to implement wind energy into the electrical grid. Accurate and reliable wind power predictions are seen as a key element for an increased penetration of wind energy. This ...

    • Short-term wind power prediction models in complex terrain based on statistical time series analysis 

      Fossem, Andreas Aarhuus (Master thesis; Mastergradsoppgave, 2019-12-13)
      One of the largest challenges with the utilization of wind as a renewable resource, is its natural variability and intermittent nature. To achieve a sustainable integration of wind power into the power grid, a precise and reliable prediction method is therefore required. In this study, several short-term wind power prediction models based on statistical time series analysis were developed and tested, ...

    • Smart Senja electrical network expansion modeling 

      Marthinussen, Oskar (Master thesis; Mastergradsoppgave, 2023-05-30)
      The addition of variable renewable energy sources into the electrical energy systems of the world has been increasing in recent years. This form of distributed energy production with high production volatility can introduce massive challenges in operating a lower voltage distribution network. One of these affected networks is on the island of Senja in northern Norway, with an eldering radial electrical ...