A5056950152- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Climate change and permafrost
- Ocean Waves and Remote Sensing
- Methane Hydrates and Related Phenomena
- Oceanographic and Atmospheric Processes
- Icing and De-icing Technologies
- Arctic and Russian Policy Studies
- Marine and environmental studies
- Geological Studies and Exploration
- Coastal and Marine Dynamics
- Geology and Paleoclimatology Research
- Smart Materials for Construction
- Aquatic and Environmental Studies
- Offshore Engineering and Technologies
- Wave and Wind Energy Systems
- Agricultural Development and Policies
- Food Industry and Aquatic Biology
- Fluid Dynamics Simulations and Interactions
- Freezing and Crystallization Processes
- Ultrasonics and Acoustic Wave Propagation
- Underwater Acoustics Research
- Agricultural Productivity and Crop Improvement
- Ship Hydrodynamics and Maneuverability
- Winter Sports Injuries and Performance
University Centre in Svalbard
2012-2024
University of Oslo
2022
Norwegian Meteorological Institute
2022
Zubov State Oceanographic Institute
2011-2020
Vladimir State University
2020
Norwegian University of Science and Technology
2007-2018
Institute of Oceanology. PP Shirshov Russian Academy of Sciences
2018
Moscow Institute of Physics and Technology
2011
Arctic and Antarctic Research Institute
2007-2010
Prokhorov General Physics Institute
1997-2007
Abstract R/V Lance serendipitously encountered an energetic wave event around 77°N, 26°E on 2 May 2010. Onboard GPS records, interpreted as the surface signal, show largest waves recorded in Arctic region with ice cover. Comparing measurements a spectral model indicated three phases of interaction: (1) blocking by ice, (2) strong attenuation energy and fracturing forcing, (3) uninhibited propagation peak extension allowed to higher frequencies (above peak). Wave properties during cover...
Water wave attenuation by grease ice is a key mechanism for the polar regions, as waves in influence many phenomena such drift, breaking and formation. However, models presented so far literature are limited number of regards, more insights required from either laboratory experiments or fieldwork these to be validated improved. Unfortunately, performing detailed measurements propagation ice, field laboratory, challenging. As consequence, data relatively scarce, often consist only couple...
There is a wide consensus within the polar science, meteorology, and oceanography communities that more in situ observations of ocean, atmosphere, sea ice are required to further improve operational forecasting model skills. Traditionally, volume such measurements has been limited by high cost commercially available instruments. An increasingly attractive solution this issue use instruments produced in-house from open-source hardware, firmware, postprocessing building blocks. In present...
Understanding lagoon behavior is crucial for both scientific research and engineering, especially in delicate Arctic environments. Lagoons are vital to coastal areas, often bol-stering infrastructure resilience. Since Spring 2019, we've monitored the Longyearbyen (Spitsbergen), erosion defense serving as a natural laboratory. The location's well-developed accessible logistics make it an ideal testing site available at any time. It can be used many studies. Spanning 400x50m,...
Abstract Flexural failure of sea ice is interest in many different applications, ranging from understanding rubble formation processes to modeling bending sheets against sloped structures and ship hulls. In this paper we present a brief summary recent in-situ experiments carried out on side-loaded beam specimens the fields near Storfjorden, Svalbard. Results these tests have been used parameterize discrete element model fracture under flexural loading. Simulations 3D using new material...
Waves can drastically transform a sea ice cover by inducing break-up over vast distances in the course of few hours. However, relatively detailed studies have described this phenomenon quantitative manner, and process waves needs to be further parameterized verified before it reliably included forecasting models. In present work, we discuss parameterization demonstrate existence an observational threshold separating breaking non-breaking cases. This is based on information from two recent...
Abstract. Observations of wave dissipation and dispersion in sea ice are a necessity for the development validation wave–ice interaction models. As composition layer can be extremely complex, most models treat as continuum with effective, rather than independently measurable, properties. While this provides opportunities to fit model observations, it also obscures our understanding interactive processes; particular, hinders ability identify under which environmental conditions these...
The paper is focusing on the tides and strong tidal current generated in western fjords of Svalbard. Numerical model chosen as a tool to study barotropic tides. Model results are compared against measured sea level drifters. modeling observation point that amplitude does not change strongly these but currents enhanced several locations, namely at entrance Dickson Fjord, narrow passages proximity Svea, central part Van Keulenfjorden. As strongest have been found Akseløya Island we focused our...
Abstract A method to estimate the flexural stiffness and effective elastic modulus of floating ice is described analysed. The based on analysis water pressure records at two or three locations below bottom when flexural-gravity waves propagate through ice. relative errors in calculations depth are tested using data from field measurements Tempelfjorden, Svalbard, where were excited by an icefall front outflow glacier Tunabreen February 2011.
An experimental investigation of flexural-gravity waves was performed in the Hamburg Ship Model Basin HSVA ice tank. Physical characteristics water-ice system were measured several locations tank with a few sensors deployed water and on during tests. The three-dimensional motion optical Qualisys; pressure by mounted wall, in-plane deformations temperatures fiber optic sensors; acoustic emissions recorded compressional crystal sensors. setup selected results tests are discussed this paper....
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...
A compact Raman lidar system for remote sensing of sea and drifting ice was developed at the Wave Research Center Prokhorov General Physics Institute Russian Academy Sciences. The is based on a diode-pumped solid-state YVO(4):Nd laser combined with spectrograph equipped gated detector. exhibits high sensitivity can be used mapping or depth profiling different parameters within many oceanographic problems. Light weight (∼20 kg) low power consumption (300 W) make it possible to install device...
This paper describes the use of Fiber Bragg Grating (FBG) sensors to investigate thermomechanical properties saline ice. FBG allowed laboratory measurements thermal expansion ice samples with a range different sizes and geometries. The high sampling frequency, accuracy, resolution provide good quality data across temperature from 0°C −20°C. Negative values effective coefficient were observed in salinities 6 ppt, 8 9.4 ppt. A model is formulated under which structural transformations ice,...
Various types of remotely sensed data and imaging technology will aid the development sea ice observation to support estimation forces that are critical Dynamic Positioning (DP) operations in Arctic waters. The use cameras as sensors on mobile sensor platforms such unmanned aerial vehicles DP be explored for measurements statistics properties. Several image processing algorithms adopted analyze concentration, floe boundaries, types. resulting methods observation, including a discussion...
Abstract. We observed a tsunami wave near the glacier front in Temple Fjord (Spitsbergen). Two temperature and pressure recorders were deployed on wire from ice approximately 300 m front. A recorder was located under them bottom. The vertical displacement of 30 cm period 90 s. attribute generation this to similarly landslide generated by motion block rocks down sloping also short-period (12 s) deformation cover. measurements allowed us estimate number these waves Young's modulus ice.