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Fresh Water River Flow is the degree of mixing in an estuary and can be approximately related to the ratio between the volume of the tidal prism and the river flow. It represents the rate at which fresh water flows from a river into an estuary.
The calculator uses the formula:
Where:
Explanation: The formula calculates the fresh water river flow by multiplying the mixing parameter with the volume of tidal prism and dividing by the tidal period.
Details: Calculating fresh water river flow is crucial for understanding estuarine dynamics, sediment transport, salinity distribution, and ecological processes in coastal environments.
Tips: Enter the mixing parameter (dimensionless), volume of tidal prism in cubic meters, and tidal period in seconds. All values must be positive numbers.
Q1: What is the mixing parameter?
A: The mixing parameter is the degree of mixing in an estuary which can be approximately related to the ratio between the volume of the tidal prism and the river flow.
Q2: How is tidal prism volume measured?
A: Volume of tidal prism is the volume of water in an estuary or inlet between mean high tide and mean low tide, or the volume of water leaving an estuary at ebb tide.
Q3: What is the typical range for tidal period?
A: Tidal period is typically around 12 hours and 25 minutes (44,700 seconds) for semi-diurnal tides, but varies by location.
Q4: What factors affect the mixing parameter?
A: The mixing parameter is influenced by estuary geometry, tidal range, river discharge, and wind conditions.
Q5: How accurate is this calculation method?
A: This provides an approximate estimation. For precise calculations, field measurements and more complex hydrodynamic models may be required.