A5002253755- Arctic and Antarctic ice dynamics
- Oceanographic and Atmospheric Processes
- Ocean Waves and Remote Sensing
- Cryospheric studies and observations
- Icing and De-icing Technologies
- Fluid Dynamics and Turbulent Flows
- Meteorological Phenomena and Simulations
- Wind and Air Flow Studies
- Methane Hydrates and Related Phenomena
- Educational Games and Gamification
- Winter Sports Injuries and Performance
- Reservoir Engineering and Simulation Methods
- Maritime Transport Emissions and Efficiency
- Underwater Acoustics Research
- Teaching and Learning Programming
- Developmental and Educational Neuropsychology
- Wind Energy Research and Development
- Arctic and Russian Policy Studies
- Intelligent Tutoring Systems and Adaptive Learning
Nord University
2022-2024
Norwegian Meteorological Institute
2022
University of Oslo
2019-2021
Norwegian University of Science and Technology
2016
The Marginal Ice Zone (MIZ) forms a critical transition region between the ocean and sea ice cover as it protects close further in from effect of steepest most energetic open waves. As waves propagate through MIZ, they get exponentially attenuated. Unfortunately, associated attenuation coefficient is difficult to accurately estimate model, there are still large uncertainties around which mechanisms dominate depending on conditions. This makes challenging predict attenuation, well effective...
Detailed water kinematics are important for understanding atmosphere-ice-ocean energy transfer processes in the Arctic. There few situ observations of 2D velocity fields marginal ice zone. Particle tracking velocimetry and particle image well known laboratory techniques measuring fields, but they usually rely on fragile equipment pollutive plastic tracers. Therefore, order to bring these methods field, we have developed a new system which combines compact open-source remotely operated...
Increased research interest and economic activity in the Arctic raise need for new observations of sea ice dynamics. Remote sensing as well mathematical numerical models wave propagation would benefit from more situ data validation. This study presents measurements marginal zone (MIZ) obtained ship mounted sensors. The system combines altimeter readings bow with motion correction to provide estimated single point ocean surface elevation. Significant height mean period, one-dimensional...
In this study, a performance test has been performed on 200 W marine wind turbine, both in tunnel, and mounted Wavescan ocean buoy coastal location near Trondheim. Long term data satisfying the DNV-RP-C205 recommended practice for describing environmental conditions loads have extracted from Eklima database subordinated Norwegian Meteorological Institute selected called Sula weather station outside of coast. 10 years one-month Trondheim formed basis monthly energy estimates at site. Energy...
Increased knowledge about energy dissipation processes around colliding ice floes is important for improved understanding of atmosphere-ice-ocean transfer, wave propagation through sea ice, and the polar climates. The aim this study to obtain such information by investigating floe dynamics in a large-scale experiment directly measuring quantifying turbulent kinetic (TKE). field work was carried out at Van Mijen Fjord on Svalbard, where 3 × 4 m sawed fast ice. Ice collisions relative...
The motivation for this study is to investigate the abilities and limitations of a Nortek Signature1000 acoustic Doppler current profiler (ADCP) regarding fine-scale turbulence measurements. Current profilers offer advantage gaining more coherent measurement data than available with point measurements, it desirable exploit property in laboratory field applications. ADCP was tested towing tank, where generated from grid towed under controlled conditions. Grid-induced well-studied phenomenon...
Increased economic activity and research interest in the Arctic raise need for better wave forecasts marginal ice zone (MIZ). Mathematical numerical models of propagation sea would benefit from more situ data validation. This study presents shipborne measurements MIZ where altimeter readings are corrected ship motion to obtain estimated single point ocean surface elevation. From combined measurements, we significant height zero up-crossing period, as well one-dimensional spectra. In...
Increased research interest and economic activity in the Arctic raise need for new observations of sea ice dynamics. Remote sensing as well mathematical numerical models wave propagation would benefit from more situ data validation. This study presents measurements marginal zone (MIZ) obtained ship mounted sensors. The system combines altimeter readings bow with motion correction to provide estimated single point ocean surface elevation. Significant height mean period, one-dimensional...
Several phenomena are known to attenuate waves in the marginal ice zone, such as wave scattering due floes, viscous dissipation inside and energy caused by floe interactions. Our aim of this study is investigate colliding floes quantify Turbulent Kinetic Energy (TKE) surrounding water through direct observations. The field work was carried out Van Mijen Fjord on Svalbard, where an artificial 3x4 m^2 sawed 1 m thick ice. Wave motion simulated pulling back forth oscillatory manner with two...
Due to their large mass and small aspect ratio, icebergs pose a threat boats offshore structures. Small bergy bits can cause harm platform hulls are more difficult discover remotely. As dynamic mediums, the study of in relation safe human operations requires rigorous analysis ice-ocean interaction, particular with waves currents. In this paper, we present iceberg towing experiments analyze stability from GPS tracks inertial motion unit data. The towline tension as well boat relative was...
The motivation for this study is to investigate the abilities and limitations of a Nortek Signature1000 acoustic Doppler current profiler (ADCP) regarding fine-scale turbulence measurements. Current profilers offer advantage gaining more coherent measurement data than available with point measurements, it desirable exploit property in laboratory field applications. ADCP was tested towing tank, where generated from grid towed under controlled conditions. Grid-induced well-studied phenomenon...