Nye registreringer

  • Wind resource assessment using mesoscale modelling. A case study at the potential wind farm site Rieppi 

    Blæsterdalen, Torgeir (Master thesis; Mastergradsoppgave, 2016-06-01)
    The growing wind power industry, increased occurrence of extreme weather, and the need for becoming independent of fossil fuels motivate the research on accurate simulation of near-surface wind. The aim of this study is ...
  • Numerical computations of turbulent motions in magnetized plasmas 

    Decristoforo, Gregor (Master thesis; Mastergradsoppgave, 2016-05-18)
    Intermittent fluctuations and turbulence-induced transport of magnetically confined fusion plasmas are investigated by numerical computations. A reduced fluid model describing the evolution of plasma pressure and electric ...
  • Sensitivity to pressure and methane of a cryptophane-A doped polymer 

    Ingvaldsen, Martin (Master thesis; Mastergradsoppgave, 2015-12-15)
    The principle focus of this thesis is the characterization of an on-chip methane sensor based on a waveguide interferometer. It incorporates cryptophane-A molecules in the waveguide cladding to enhance sensitivity and ...
  • Rib waveguides for trapping and transport of particles 

    Ahluwalia, Balpreet Singh; Helle, Øystein Ivar; Hellesø, Olav Gaute (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-02-23)
    Rib waveguides are investigated as an alternative to strip waveguides for planar trapping and transport of microparticles. Microparticles are successfully propelled along the surface of rib waveguides and trapped in the ...
  • An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements 

    Bjoland, Lindis Merete; Belyey, Vasyl; Løvhaug, Unni Pia; La Hoz, Cesar (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-13)
    Incoherent scatter radar measurements are an important source for studies of ionospheric plasma parameters. In this paper the EISCAT Svalbard radar (ESR) long-term database is used to evaluate the International Reference ...
  • Integrated Monitoring of Mola mola Behaviour in Space and Time 

    Sousa, Lara L; López-Castejón, Francisco; Gilabert, Javier; Relvas, Paulo; Couto, Ana; Queiroz, Nuno; Caldas, Renato; Dias, Paulo Sousa; Dias, Hugo; Faria, Margarida; Ferreira, Filipe; Ferreira, António Sérgio; Fortuna, João; Gomes, Ricardo Joel; Loureiro, Bruno; Martins, Ricardo; Madureira, Luis; Neiva, Jorge; Oliveira, Marina; Pereira, João; Pinto, José; Py, Frederic; Queirós, Hugo; Silva, Daniel; Sujit, P. B.; Zolich, Artur Piotr; Johansen, Tor Arne; Sousa, João Borges de; Rajan, Kanna (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-05)
    Over the last decade, ocean sunfish movements have been monitored worldwide using various satellite tracking methods. This study reports the near-real time monitoring of fine-scale (< 10 m) behaviour of sunfish. The study ...
  • Retrieval of sodium number density profiles in the mesosphere and lower thermosphere from SCIAMACHY limb emission measurements 

    Langowski, M.P.; von Savigny, C.; Burrows, J.P.; Rozanov, V.V.; Dunker, Tim; Hoppe, Ulf-Peter; Sinnhuber, M; Aikin, A.C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-01-28)
    An algorithm has been developed for the retrieval of sodium atom (Na) number density on a latitude and altitude grid from SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY) limb measurements ...
  • Time-lapse seismic analysis of focused fluid flow on the Vestnesa Ridge 

    Mathisen, Lena Myreng (Master thesis; Mastergradsoppgave, 2016-06-01)
    The Vestnesa Ridge is a large sediment drift at water depths of 1200-1300 meter and is the northernmost known gas hydrate province that exists along the Arctic continental margin. Several pockmarks connected to vertical ...
  • Depositional environments of the Upper Triassic Snadd Formation on the Loppa High, SW Barents Sea 

    Johansen, Stian André (Master thesis; Mastergradsoppgave, 2016-06-01)
    This thesis has focused on the depositional environments of the Upper Triassic Snadd Formation. This formation covers the time-period Ladinian to early Norian with multiple marine regressions and transgressions, resulting ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Investigation of seafloor craters and mounds in the central Barents Sea 

    Sørbø, Magnus (Master thesis; Mastergradsoppgave, 2016-06-01)
    Recently acquired datasets of multibeam, echosounder and seismic data reveal the geomorphology and distribution of seafloor craters and mounds in central Barents Sea. The study found 288 craters, 227 pingos and 119 gas ...
  • 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 ...
  • Possible gas hydrates on the Bjarmeland Platform; seismic expression and stability modelling 

    Løvaas, John Sverre (Master thesis; Mastergradsoppgave, 2016-05-24)
    Seismic evidence of shallow gas anomalies are prominent at Ververis Dome structure and Hoop Fault Complex in Bjarmeland Platform. Ubiquitous high amplitude anomalies at the same depth as these shallow gas anomalies infer ...
  • Fluid flow features and gas hydrates in the outer Vøring Basin 

    Varjola, Carita E. Eira (Master thesis; Mastergradsoppgave, 2015-12-15)
    The 3D seismic survey ST0827 in the outer Vøring Basin reveals a complex fluid flow system consisting of hydrothermal vents, polygonal faults and acoustic pipes. The polygonal faults are bound to the fine-grained Top Brygge ...
  • Late summer sea ice segmentation with multi-polarisation SAR features in C- and X-band 

    Fors, Ane Schwenke; Brekke, Camilla; Doulgeris, Anthony Paul; Eltoft, Torbjørn; Renner, Angelika; Gerland, Sebastian (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-01)
    In this study we investigate the potential of sea ice segmentation by C- and X-band multi-polarisation synthetic aperture radar (SAR) features during late summer. Five high-resolution satellite SAR scenes were recorded ...
  • Sensitive on-chip methane detection with a cryptophane-A cladded Mach-Zehnder interferometer 

    Dullo, Firehun Tsige; Lindecrantz, Susan; Jagerska, Jana; Hansen, Jørn H; Engqvist, Stig Olov Magnus; Solbø, Stian; Hellesø, Olav Gaute (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-24)
    We report a methane sensor based on an integrated Mach-Zehnder interferometer, which is cladded by a styrene-acrylonitrile film incorporating cryptophane-A. Cryptophane-A is a supramolecular compound able to selectively ...
  • Optical transport, lifting and trapping of micro-particles by planar waveguides 

    Helle, Øystein Ivar; Ahluwalia, Balpreet Singh; Hellesø, Olav Gaute (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-03)
    Optical waveguides can be used to trap and transport micro-particles. The particles are held close to the waveguide surface by the evanescent field and propelled forward. We propose a new technique to lift and trap particles ...
  • Eastward-expanding auroral surges observed in the post-midnight sector during a multiple-onset substorm 

    Tanaka, Yoshimasa; Ogawa, Yasunobu; Kadokura, Akira; Partamies, Noora; Whiter, Daniel; Enell, Carl-Fredrik; Brändström, Urban; Sergienko, Tima; Gustavsson, Björn Johan; Kozlovsky, Alexander; Miyaoka, Hiroshi; Yoshikawa, Akimasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-09)
    We present three eastward-expanding auroral surge (EEAS) events that were observed intermittently at intervals of about 15 min in the post-midnight sector (01:55–02:40 MLT) by all-sky imagers and magnetometers in ...

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