Blar i Faculty of Mathematics and Natural Sciences på tittel
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Turbulence and heat exchange under ice
(Master thesis, 2003)Turbulent fluxes of heat and salt were measured under sea ice at four different locations around Spitsbergen. In Kongsfjorden on West Spitsbergen additional measurements of heat fluxes in the ice and in the atmosphere were ... -
Turbulence in a coastal environment: the case of Vindeby
(Journal article; Peer reviewed, 2022)The one-point and two-point power spectral densities of the wind velocity fluctuations are studied using the observations from an offshore mast at Vindeby Offshore Wind Farm, for a wide range of thermal stratifications of ... -
Turbulence Measurements in Shallow Water from a Subsurface Moored Moving Platform
(Peer reviewed; Journal article, 2013)Preliminary results are presented from a moored, autonomous instrument measuring the upper ocean turbulent dissipation rate together with the surface gravity wave field. Observations are made in the area approximately 30 ... -
Turbulence structure in the upper ocean: a comparative study of observations and modeling
(Peer reviewed; Journal article, 2014-04)Observations of turbulent dissipation rates measured by two independent instruments are compared with numerical model runs to investigate the injection of turbulence generated by sea surface gravity waves. The nearsurface ... -
Turbulence, Vorticity and Lambda Polarization
(Journal article; Peer reviewed, 2014)Present highest energy heavy ion experiments show the dominance of the fluid dynamical processes. The possibility of new collective phenomena, rotation and turbulence occurs, which were known only in macroscopic systems ... -
Turbulence-particle interactions under surface gravity waves
(Peer reviewed; Journal article, 2016)The dispersion and transport of single inertial particles through an oscillatory turbulent aquatic environment are examined numerically by a Lagrangian particle tracking model using a series of idealised test cases. The ... -
Turbulent diffusion and transport from a CO2 lake in the deep ocean
(Journal article, 2005-09-21)If liquid CO2 is stored as a dense ‘‘lake’’ on the deep ocean floor, it is expected to dissolve in seawater. Ocean currents and turbulence can increase the net rate of CO2 release by several orders of magnitude compared ... -
Turbulent heat and momentum fluxes in the upper ocean under Arctic sea ice
(Peer reviewed; Journal article, 2017-02)We report observations of heat and momentum fluxes measured in the ice-ocean boundary layer from four drift stations between January and June 2015, covering from the typical Arctic basin conditions in the Nansen Basin to ... -
Turbulent kinetic energy estimates from profiling wind LiDAR measurements and their potential for wind energy applications
(Peer reviewed; Journal article, 2016-07-10)This study shows that turbulent kinetic energy (TKE) estimates, derived from static LiDARs in Doppler Beam Swing (DBS) mode, permit a qualitative and quantitative characterization and analysis of turbulent structures as ... -
Turbulent upper-ocean mixing affected by meltwater layers during Arctic summer
(Peer reviewed; Journal article, 2017-04)Every summer, intense sea ice melt around the margins of the Arctic pack ice leads to a stratified surface layer, potentially without a traditional surface mixed layer. The associated strengthening of near-surface ... -
TV-Stokes And Its Variants For Image Processing
(Doctoral thesis, 2021-03-30)The total variational minimization with a Stokes constraint, also known as the TV-Stokes model, has been considered as one of the most successful models in image processing, especially in image restoration and sparse-data-based ... -
Twenty-One Years of Phytoplankton Bloom Phenology in the Barents, Norwegian, and North Seas
(Journal article; Peer reviewed, 2021)Phytoplankton blooms provide biomass to the marine trophic web, contribute to the carbon removal from the atmosphere and can be deadly when associated with harmful species. This points to the need to understand the phenology ... -
Twinning-by-Construction: Ensuring Correctness for Self-adaptive Digital Twins
(Journal article; Peer reviewed, 2022)Digital twin applications use digital artefacts to twin physical systems. The purpose is to continuously mirror the structure and behavior of the physical system, such that users can analyse the physical system by means ... -
Two apolipoproteins in salmon louse (Lepeophtheirus salmonis), apolipoprotein 1 knock down reduces reproductive capacity
(Journal article; Peer reviewed, 2021)The salmon louse, Lepeophtheirus salmonis is an ectoparasite of salmonid fish in the Northern Hemisphere, causing large economical losses in the aquaculture industry and represent a threat to wild populations of salmonids. ... -
Two dark matter candidates in three-Higgs-doublet models with S3 symmetry
(Journal article; Peer reviewed, 2022)Models with an extended scalar electroweak sector can have vanishing vacuum expectation values in a basis where an underlying symmetry is imposed. Such extensions are very well motivated. If a symmetry prevents couplings ... -
Two decades of match-mismatch in Northeast Arctic cod – Feeding conditions and survival
(Journal article; Peer reviewed, 2022)The successful recruitment of Northeast Arctic (NEA) cod is thought to depend on sufficient and suitable prey for the newly hatched larvae, in particular the nauplii stages of the lipid-rich calanoid copepod species Calanus ... -
Two Higgs Doublets plus One Dark Matter Singlet
(Master thesis, 2010-08-01)In this thesis an extension of the 2HDM (see chapter 1) is explored. The extension admits an extra inert singlet which is a dark matter candidate. Before the exploration a large part of the thesis (chapter 2) is an overview ... -
Two homologous neutrophil serine proteases bind to POPC vesicles with different affinities: When aromatic amino acids matter
(Peer reviewed; Journal article, 2014-12)Neutrophil serine proteases Proteinase 3 (PR3) and human neutrophil elastase (HNE) are homologous antibiotic serine proteases of the polymorphonuclear neutrophils. Despite sharing a 56% sequence identity they have been ... -
Two hundred years of zooplankton vertical migration research
(Journal article; Peer reviewed, 2021)Vertical migration is a geographically and taxonomically widespread behaviour among zooplankton that spans across diel and seasonal timescales. The shorter-term diel vertical migration (DVM) has a periodicity of up to 1 ... -
Two Level Additive Schwarz Preconditioner For Control Volume Finite Element Methods
(Master thesis, 2010-09-22)In this thesis we investigate nummerically the convergence properties of the control volume finite element method (CVFEM) preconditioned with a two level overlapping additive Schwarz method. Relevant theory regarding the ...