Surface wave propagation in mangrove forests
Open Access
- 30 April 1999
- journal article
- Published by IOP Publishing in Fluid Dynamics Research
- Vol. 24 (4), 219-249
- https://doi.org/10.1016/s0169-5983(98)00024-0
Abstract
Mangroves are a special form of vegetation as they exist at the boundary of terrestrial and marine environment. They have a special role in supporting fisheries and in the stabilizing the tropical coastal zones. Biochemical and trophodynamic processes in the mangroves are strongly linked to water movement, due to tides and waves. In this paper we present the theoretical attempt to predict the attenuation of wind-induced random surface waves in the mangrove forest. The energy dissipation in the frequency domain is determined by treating the mangrove forest as a random media with certain characteristics determined using the geometry of mangrove trunks and their locations. Initial nonlinear governing equations are linearized using the concept of minimalization in the stochastic sense and interactions between mangrove trunks and roots have been introduced through the modification of the drag coefficients. The resulting rate of wave energy attenuation depends strongly on the density of the mangrove forest, diameter of mangrove roots and trunks, and on the spectral characteristics of the incident waves. Examples of numerical calculations as well as preliminary results from observation of wave attenuation through mangrove forests at Townsville (Australia) and Iriomote Island (Japan) are given.Keywords
This publication has 12 references indexed in Scilit:
- The use of a discrete vortex model for shallow water flow around islands and coastal structuresCoastal Engineering, 1997
- Currents and Sediment Transport in Mangrove ForestsEstuarine, Coastal and Shelf Science, 1997
- Mangroves as a coastal protection from waves in the Tong King delta, VietnamMangroves and Salt Marshes, 1997
- Drag force due to vegetation in mangrove swampsMangroves and Salt Marshes, 1997
- Sedimentation in Mangrove ForestsMangroves and Salt Marshes, 1996
- Linearization methods and the influence of current on the nonlinear hydrodynamic drag forceApplied Ocean Research, 1983
- Effect of a kelp forest on coastal currentsContinental Shelf Research, 1983
- Study of Flow past a Circular Cylinder by an Inviscid ModelJournal of the Physics Society Japan, 1978
- Groups of Vertical Cylinders Oscillating in WaterJournal of the Engineering Mechanics Division, 1963
- Water Forces on Flexible Oscillating CylindersJournal of the Waterways and Harbors Division, 1962