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The Tidal Period formula calculates the time period of tidal cycles based on the volume of tidal prism, Froude number, estuary number, and fresh water river flow. It's essential for understanding estuarine dynamics and tidal behavior in coastal areas.
The calculator uses the formula:
Where:
Explanation: The formula relates tidal period to the fundamental parameters that characterize estuarine hydrodynamics and mixing processes.
Details: Accurate tidal period calculation is crucial for coastal engineering, navigation planning, sediment transport studies, and understanding estuarine ecosystems. It helps predict tidal behavior and its interaction with river flows.
Tips: Enter all values as positive numbers. Volume of tidal prism in cubic meters, Froude number and estuary number as dimensionless values, and fresh water river flow in cubic meters per second.
Q1: What is tidal prism volume?
A: Tidal prism volume is the volume of water that flows in and out of an estuary or inlet during a tidal cycle, between mean high tide and mean low tide levels.
Q2: How is Froude number defined in this context?
A: The Froude number characterizes the flow regime and represents the ratio of inertial forces to gravitational forces in the fluid flow.
Q3: What does the estuary number represent?
A: The estuary number quantifies the degree of mixing in an estuary and relates to the ratio between tidal prism volume and river flow.
Q4: What are typical values for tidal periods?
A: Tidal periods typically range from about 12 hours (semi-diurnal tides) to 24 hours (diurnal tides), depending on the location and tidal characteristics.
Q5: Can this formula be used for all estuaries?
A: While generally applicable, the formula may need adjustments for estuaries with unusual geometries, strong wind effects, or other atypical conditions.