tidal prism

tidal prism

[′tīd·əl ′priz·əm]
(oceanography)
The difference between the mean high-water volume and the mean low-water volume of an estuary.
References in periodicals archive ?
The tidal prism method is simple and easy to apply.
Therefore, flushing times of sewage waters of Karachi harbor and Gizri creek are calculated by modified tidal prism method [22, 23] and freshwater fraction method [20, 24].
Among specific topics are the flushing of Louisiana's coastal bays under hurricane conditions, Puget Sound Operational Forecast System as a real-time predictive tool for marine resource management and emergency responses, overland tidal power generation using a modular tidal prism, and coupling a high resolution hurricane storm surge model to operational weather and ocean predictive systems.
Also, on the other hand, the damming of large areas of marshland for fish-farming has contributed to a sharp decrease of the tidal prism.
This has been interpreted as the system's response to the progressive reduction of the tidal prism caused by sedimentary infilling of marshes inland.
Tide restrictions reduce the tidal prism and thereby limit seawater flushing and dilution of constituents delivered to the estuary in discharging freshwater; this dilution is reduced both landward and seaward of the restricting structure.
Conversely, tidal restoration would reduce fecal bacteria concentrations, regardless of their source, first through simple dilution because of a much-increased tidal prism.
Highest densities were measured at sites immediately upstream of the tidal prism, and at the head of the open channel where it daylights, with geometric mean densities (MPN/100 ml) ranging from [10.
The tidal prism is the top part of the estuary between the Low Water and the High Water levels.
Nevertheless, continued sedimentation in the intra-jetty and adjacent bayside areas decreased the tidal prism from 32.
Because tides are variable in strength, the tidal prism and tidal volume in an estuary are also variable as is the wet cross-sectional area, which is that part of the total cross-sectional area filled with water.
However, total tidal range and the tidal prism are reduced due to a cobble sill at the inlet (Hubbard 1996).