- Type of project
- Graduation work
- Lima (Peru)
- South America
- Royal HaskoningDHV
- Salaverry Harbor authority
- 8 months, from august 2012 – march 2013
- Contract value
Getting insight in the erosion and accretion mechanisms around harbour entrances as a result of different forcings
At the coast of Peru, some 500 kilometres North of the capital Lima, the harbour of Salaverry is situated. This harbour has to cope with the ‘classical problem’ of alongshore sediment transport (mainly in Northward direction, up to 1 million m3/yr) resulting in accretion of sediment on the South side of the harbour and erosion of sediment along the North side of the harbour. To keep the harbour open, dredging works are being carried out as well as the construction of a breakwater to block the alongshore sediment transport. All of the described phenomena become clearly visible in a satellite photo.
Description of projectThe understanding and predictability of the morphological evolution around this harbor is limited. Driving forces for the morphological evolution are different swell-components, mild wind sea and tides. These processes play a role at different time scales and also have a different character (episodic vs stationary). The central research question is how to schematise these boundary conditions for mid-term (say 2- 5 years) prediction of the morphological evolution around the harbor.
To be able to understand the different processes that play a role, especially in the mouth of the harbour, a 2DH-model will be applied. Various sensitivity runs will be performed with a different mix of boundary conditions (swell, wind sea, tide). It will be investigated what the predictive performance is using the different sets of boundary conditions. The added value of this project is that the generic insights can be applied elsewhere around the world.