Tidal Prism Filling Bay Formula:
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The Tidal Prism Filling Bay 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. It represents the amount of water exchanged during a tidal cycle.
The calculator uses the Tidal Prism Filling Bay formula:
Where:
Explanation: This formula calculates the tidal prism volume based on tidal duration and maximum ebb tide discharge, using the mathematical constant π for the calculation.
Details: Accurate tidal prism calculation is crucial for coastal engineering, estuary management, sediment transport studies, and understanding tidal hydrodynamics in coastal systems.
Tips: Enter tidal duration in years and maximum instantaneous ebb tide discharge in cubic meters per second. Both values must be positive numbers greater than zero.
Q1: What is tidal duration?
A: Tidal duration is an efficient way of guesstimating how much water there is, at any given time of day, over a particular point. It represents the time period of tidal cycles.
Q2: What is maximum instantaneous ebb tide discharge?
A: Maximum instantaneous ebb tide discharge per unit width [length^3/time-length]. Ebb is the tidal phase during which water level is falling, as opposed to flood tidal phase during which water level rises.
Q3: Why is π used in this formula?
A: The mathematical constant π (pi) is used in this formula as part of the mathematical derivation that relates tidal duration and maximum discharge to the tidal prism volume.
Q4: What are typical values for tidal prism?
A: Tidal prism values vary significantly depending on the size and geometry of the estuary or bay, ranging from thousands to millions of cubic meters.
Q5: How accurate is this calculation method?
A: This formula provides a good estimation but actual tidal prism may vary due to factors such as basin morphology, friction, and non-linear tidal dynamics.