Tidal-Scale Hydrodynamics within Mangrove Swamps

@article{Mazda2005TidalScaleHW,
  title={Tidal-Scale Hydrodynamics within Mangrove Swamps},
  author={Yoshihiro Mazda and Daijiro Kobashi and Satoshi Okada},
  journal={Wetlands Ecology and Management},
  year={2005},
  volume={13},
  pages={647-655}
}
Both the drag force and the horizontal eddy viscosity play a dominant role in the tidal-scale hydrodynamics in mangrove wetlands. Using field observations and basic fluid mechanics laws, the drag coefficient and the coefficient of dynamic eddy viscosity are found to be predictable as a function of the Reynolds Number based on the characteristic length scale of the vegetation. The characteristic length scale of the vegetation varies greatly with vegetation species, vegetation density and tidal… Expand

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References

SHOWING 1-10 OF 29 REFERENCES
Drag force due to vegetation in mangrove swamps
Field studies of tidal flows in largely pristine mangrove swamps suggestthat the momentum equation simplifies to a balance between the water surfaceslope and the drag force. The controlling parameterExpand
Tidal Flow in Riverine-Type Mangroves
The behavior of tidal flow in the riverine-forest type is investigated in the Aira-River mangrove area in Iriomote Island, Japan. In the mangrove swamp near the bank of the creek, a velocityExpand
Dependence of dispersion on vegetation density in a tidal creek‐mangrove swamp system
The dependence of dispersion in a tidal creek on the vegetation density in a fringing mangrove swamp is discussed through a numerical model. A secondary circulation prevails everywhere in the tidalExpand
Currents and Sediment Transport in Mangrove Forests
Abstract A field study of the tidal currents, cohesive sediment dynamics and transport of organic carbon in a highly vegetated mangrove swamp was carried out at Middle Creek, Cairns, Australia. TheExpand
Hydrodynamics of a tidal creek-mangrove swamp system.
TLDR
It is shown that a net down-stream longitudinal current through mangrove swamps exists and is responsible for rapidly carrying away organic detritus to the ocean, thereby enhancing the export of nutrients from mangroves swamps. Expand
Hydrodynamics of mangrove swamps and their coastal waters
Mangrove swamps help control the tidal hydrodynamics of many tropical estuaries. They generate an asymmetry of the tidal currents in both the tidal creeks and the mangrove swamps. This results inExpand
A Higher Order Closure Model for Canopy Flow
Abstract The equations of motion were used to develop a one-dimensional, nonbuoyant mathematical model of air flow within vegetative canopies. The model consists of equations for mean horizontalExpand
Surface wave propagation in mangrove forests
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 tropicalExpand
Coastal erosion due to long-term human impact on mangrove forests
A coast in southern Vietnam, which is located in a wide and flat alluvial fan and neighbors tidal rivers fringed by wide mangrove swamps, has been eroded continuously by approximately 50 m/year sinceExpand
NUMERICAL STUDY ON TURBULENT FLOW OVER RIGID VEGETATION-COVERED BED IN OPEN CHANNELS
Open channel flow over rigid vegetation is analyzed numerically by horizontaly averaged Reynolds equations based on k-e turbulence model. Not only uniform flow over vegetated bed but also aExpand
...
1
2
3
...