A5070815362- Ocean Waves and Remote Sensing
- Coastal and Marine Dynamics
- Aquatic and Environmental Studies
- Marine and environmental studies
- Oceanographic and Atmospheric Processes
- Tropical and Extratropical Cyclones Research
- Aeolian processes and effects
- Arctic and Antarctic ice dynamics
- Coastal wetland ecosystem dynamics
- Wave and Wind Energy Systems
- Underwater Acoustics Research
- Methane Hydrates and Related Phenomena
- Food Industry and Aquatic Biology
- Geotechnical Engineering and Soil Stabilization
- Elasticity and Wave Propagation
- Hydrology and Watershed Management Studies
- Nonlinear Waves and Solitons
- Structural Engineering and Vibration Analysis
- Collembola Taxonomy and Ecology Studies
- Radio Wave Propagation Studies
- Underwater Vehicles and Communication Systems
- BIM and Construction Integration
- Geological formations and processes
- Earthquake and Tsunami Effects
- Fluid Dynamics Simulations and Interactions
Institute of Oceanology. PP Shirshov Russian Academy of Sciences
2015-2024
Russian Academy of Sciences
2008-2015
An analysis of the variability wave climate and energy within Black Sea for period 1960–2011 was made using field data from Voluntary Observing Ship Program. Methods wavelet were applied. It determined that power flux in fluctuates: highest value is 4.2 kW/m, lowest 1.4 kW/m. Results indicate significant correlations among fluctuations average annual heights, periods, energy, teleconnection patterns North Atlantic Oscillation (NAO), Multi-decadal (AMO), Pacific Decadal (PDO) East...
The formation of secondary wave in a coastal zone was investigated on the base field, laboratory and numerical experiments. It found that waves is essentially part weakly nonlinear-dispersive transformation determined by periodic exchange energy between first second harmonics. depends stage defined amplitude harmonic phase shift On modeling experiments an idea combination underwater structures with floating breakwater investigated. Waves propagating above submerged bar generate decrease mean...
On the basis of field experiment data, main features influence non-linear wave transformation scenarios on cross-shore sediment transport in coastal zones were investigated. The bottom deformations due to follow specific scenario. increase second harmonic amplitude leads erosion underwater slope at distances corresponding this process, with subsequent accumulation sandy material closer shore where decreases during backward energy transfer first harmonic. This can be explained by change phase...
On the base of laboratory experiments nonlinear wave transformation above submerged rectangular permeable and solid bars was investigated. A transmission coefficient a change mean period as parameters were considered. Both these can characterize an ability structure to reduce impact in coastal zone. It revealed that for decreasing bar is more effective, but effective height. The optimal relations dependence waves revealed. For length must be 0.4 initial wavelength 0.1 - bar. height 0.21...
The nonlinear transformation of waves in the coastal zone over sloping bottom is considered on base field, laboratory, and numerical experiments by methods spectral wavelet analyses. nonlinearity leads to substantial changes wave shape during its propagation shore. Since these occur rapidly, movement non-periodical space, application linear theory concepts wavenumber or wavelength results some paradoxical phenomena. When analyzing spatial evolution frequency domain, effect periodic energy...
The study investigates cross-shore outer sand bar dynamics in an open-coast non-tidal beach at the Bulgarian Black Sea due to wave climate. On seasonal short-term (1–2 years) time scale, monthly field measurements of profiles were related respective modeled nearshore data. Hereby, seaward-shoreward migration was examined depending on forcing, non-linearity, transformation scenarios, storms and direction incidence. Analysis revealed that intra-annually highly non-linear waves responsible for...
The effect of the underwater bar position on a sandy beach profile was studied timescale one storm, using XBeach numerical model. largest shoreline regress occurred in first hour storm. For chosen wave regime an close to theoretical Dean’s equilibrium is formed after 6 h. affects retreat rate. lowest shore occurs when crest located at distance equal 0.70–0.82 deep-water wavelength, corresponding period spectrum peak. maximal that half wavelength. recession depends heights low-frequency...
Sand bar migration on the gently sloping sandy bottom in coastal zone as a result of nonlinear wave transformation and corresponding sediment transport is discussed. Wave intermediate depth causes periodic exchange energy space between first second harmonics, accompanied by changes profile asymmetry. This leads to occurrence periodical fluctuations wave-induced transport. It shown that position harmonic maximum determines location divergence point inclined profile, where it direction from...
The evolution of wind waves in coastal zones leads to changes the shape wave spectrum. Along coast Kerala, due presence mudbanks during southwest monsoon, we could observe downshifting peak frequency spectral data. present study aims at proving mechanism and possible influence process on mudbank formation. results SWASH (Simulating WAves till SHore) modeling bispectral analysis shows that occurs difference nonlinear triad interactions main spectrum with frequencies infragravity range...
Mudbanks (MBs) are a natural phenomenon, forming along the southwest coast of India during monsoon (SWM), almost every year. High waves initiate these formations. The temporal variability (both intra-annual and multi-decadal) wave climate southeastern Arabian Sea (AS) is related to main indices which determine fluctuations in this region, based on that, occurrence MBs illustrated. Voluntary Observing Ships data such as El Niño phenomenon index for site 5N-5S 170W-120W (NINO3.4),...