| title: | Ice cover and near-boundary waves in natural waterbodies: numerical modelling |
|---|---|
| reg no: | ETF5868 |
| project type: | Estonian Science Foundation research grant |
| subject: |
1.16. Marine Sciences and Limnology 2.3. Mechanics |
| status: | accepted |
| institution: | TTU Marine Systems Institute |
| head of project: | Jüri Elken |
| duration: | 01.01.2004 - 31.12.2007 |
| description: | The project intended to support two doctoral research studies consists from two sub-projects: (1) modelling of ice cover, mainly in the lake Peipsi, and (2) modelling the transformation of shallow basin waves near the coast, man-made coastal structures and ice cover. Broader aim of the grant project is to derive from the high-resolution model studies the upscaling parameterizing expressions for accounting the ice- and wave-related exchange fluxes in the climate-oriented ecological models of medium and small resolution/complexity. In the ice sub-project the aim is to compose and apply an ice dynamics model that accounts for the ice formation and development, ice and water temperature, circulation beneath the ice and ice ridging in the coastal zone. Observational data are also analyzed and compared to the model results. Comparative analyzis is made for the factors affecting the ice cover in a large and shallow lake (Peipsi) and semi-enclosed sea area of medium depth (Gulf of Riga, Pärnu Bay). In the wave transformation sub-project the aim is to develop and apply the 2+1D Nwogu-Boussinesq wave model that describes transformation of water level and horizontal velocity due to surface waves approaching the surf zone. Data from wave measurements are analyzed and compared to the model results. Combined wave-current-sediment modelling is applied to estimate the role of wind and ship waves on the bottom erosion near the natural coastal structures and constructions, taking into account also the ice cover. |
| project group | ||||
|---|---|---|---|---|
| no | name | institution | position | |
| 1. | Jüri Elken | TTU Marine Systems Institute | director | |
| 2. | Tambet Lember | TTÜ MSI | insener | |
| 3. | Ove Pärn | TTÜ MSI | insener | |