Do tidal channels have a characteristic length? Given the sediment characteristics, the inlet conditions and the degree of channel convergence, can we predict it? And how is this length affected by the presence of tidal flats adjacent to the channel? We answer the above questions on the basis of a fully analytical treatment, appropriate for the short channels typically observed in coastal wetlands. The equilibrium length of non-convergent tidal channels is found to be proportional to the critical flow speed for channel erosion. Channel convergence causes concavity of the bed profile. Tidal flats shorten equilibrium channels significantly. Laboratory and field observations substantiate our findings.

How long are tidal channels? / G., Seminara; S., Lanzoni; N., Tambroni; Toffolon, Marco. - In: JOURNAL OF FLUID MECHANICS. - ISSN 0022-1120. - STAMPA. - 643:(2010), pp. 479-494. [10.1017/S0022112009992308]

How long are tidal channels?

Toffolon, Marco
2010

Abstract

Do tidal channels have a characteristic length? Given the sediment characteristics, the inlet conditions and the degree of channel convergence, can we predict it? And how is this length affected by the presence of tidal flats adjacent to the channel? We answer the above questions on the basis of a fully analytical treatment, appropriate for the short channels typically observed in coastal wetlands. The equilibrium length of non-convergent tidal channels is found to be proportional to the critical flow speed for channel erosion. Channel convergence causes concavity of the bed profile. Tidal flats shorten equilibrium channels significantly. Laboratory and field observations substantiate our findings.
G., Seminara; S., Lanzoni; N., Tambroni; Toffolon, Marco
How long are tidal channels? / G., Seminara; S., Lanzoni; N., Tambroni; Toffolon, Marco. - In: JOURNAL OF FLUID MECHANICS. - ISSN 0022-1120. - STAMPA. - 643:(2010), pp. 479-494. [10.1017/S0022112009992308]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/77108
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