| Autor: |
Männikus, R., Wang, W. W., Eelsalu, M., Najafzadeh, F., Bihs, H., Soomere, T. |
| Předmět: |
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| Zdroj: |
Latvian Journal of Physics & Technical Sciences; Dec2024, Vol. 61 Issue 6, p3-24, 22p |
| Abstrakt: |
We explore the complexity of various drivers and local constraints from the viewpoint of developing a feasible re-design of a small harbour that is affected by ultra-refraction of storm waves. Waves propagating towards the Port of Ruhnu on a small island in the central part of the Gulf of Riga are systematically redirected by underwater features so that saturated waves in virtually all storms propagate almost exactly into the harbour entrance. A new design of the port entrance and associated set of breakwaters is largely steered by the location of the port and options for the fairway into the port. The re-design of the breakwaters and possible relocation of the entrance considers the specific features of the local wind, wave, and water level climate, including period-depending refraction of storm waves. We present systematic analysis of these aspects using recorded and modelled wind and water level time series. Wave properties are reconstructed using the WAVE module (SWAN) of the Delft3D suite forced with ERA5 and local wind information. Phase-resolving modelling of waves (REEF3D software) reveals the presence of a bi-modal wave field in the interior of the port and provides alternatives for the design of effective protection options that suppress single wave components. On many occasions, greatly simplified models and local one-point wind properties provide even better match with recorded wave properties than sophisticated models and global data sets. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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