Correlation between seafloor topography and mangrove to high wave propagation

In this study, a high wave propagation simulation is conducted with several scenarios that include water's depth or seafloor topography's scenario and mangrove forest. The seafloor topography scenario is included because Indonesia has a quite different seafloor topography. The mangrove scenarios are included in this study because it will be seen how the effects of mangrove forests influence to reduce the height and velocity of waves. After the results of numerical simulations that have been carried out, it is obtained some information that the depth of waters and mangrove forests can contribute to the propagation of waves. Both can play a role to reduce the wave height to arrive at the mainland about 0,02 meters. It also can reduce the speed of the wave. With some results of the analysis obtained, how we provide obstacles can be done to reduce the impact of the risk of high waves, one of which is by planting mangrove forests. Further research is needed to learn the cause of the difference between negative velocity and time to wave that is fast enough even if given obstacles.