Optimising the wave attenuation of bamboo fences using the numerical wave model SWASH

The coastline of Demak, Indonesia, has been eroding during the<br/>last 15 years. Coastal retreat in Demak is caused by a combination<br/>of mangrove deforestation and local subsidence due to groundwater<br/>extraction in the nearby city of Semarang. To restore the lost mangrove<br/>forest, permeable dams, consisting of bamboo poles with a<br/...

Wave transmission and drag coefficients through dense cylinder arrays: Implications for designing structures for mangrove restoration

Mangrove vegetation constitutes a natural coastal defence against waves and erosion. Despite their protective role, mangrove ecosystems have experienced continuous degradation over the last decades due to human causes. At retreating mangrove coastlines, bamboo structures are built to create new habitat for mangrove colonization. Existing...

Wave transformation on the mangrove-mud coast of Demak, Indonesia

In this paper the typical hydrodynamics on mangrove-mud coasts are studied. Worldwide, these coasts experience serious erosion problems, and while the importance of mangrove ecosystems is becoming widely recognised, mangrove restoration projects frequently fail due to poor understanding of the system, especially the hydrodynamics. Therefore, a...

Wave attenuation by brushwood dams in a mud-mangrove coast

During recent decades, mangrove forests have experienced severe degradation due to unsustainable land use. Restoration of mangrove ecosystems requires the recovery of their habitat, considering ecology, hydrology, hydrodynamics, and sediment transport. In a first pilot in 2013, brushwood dams were built on the eroding coast of Demak, Indonesia,...