PageText identifiedComment or correction
3Simon et al.Simons et al.
6Simon et al.Simons et al.
8after whom the [Froude] number is named.The Froude number, as defined, was not developed by Froude. The original definition, Froude's Law of Comparison, had a ship width instead of a water depth in the denominator.
15kinematic waves, controlled by friction between the flow and the bed kinematic waves are controlled by a balance of frictional and gravitational forces
15dimensionless wave numbercorrect definition of dimensionless wavenumber is in terms of characteristic length Lo, not of flow depth d (see Ponce and Simons, 1977)
17β is a friction-related parameterβ is the exponent of the discharge-area rating, a function of the frictional and cross-sectional characteristics of the channel
17the common model of the flow resulting from a dam breakmost flood waves resulting from a dam break are dynamic, i.e., highly dissipative, and not kinematic, which does not dissipate
18Ponce and Simmons, 1977Ponce and Simons, !977
18[bottom section]relates only to subcritical flow; in supercritical flow, both primary and secondary surface waves travel downstream; clarified in the next page.
21values of 1.5 and 2Values of 1.5 (Manning) and 2 (Chezy)
21kinematic waves have the propensity to amplify and growUnder Vedernikov number V > 1, kinematic wavesa amplify; under V < 1 they dissipate (attenuate or diffuse), under V = 1, kinematic waves hold their stage.
22celerity exceeding the flow velocity celerity exceeding the flow velocity, i.e., for β > 1. This would not happen in a circular culvert, because in this case, β < 1.
30A tidal bore has the characteristics of a hydraulic jumpWe believe the tidal bore is generated by tidal effects, but its persistence when traveling upstream in a river must be attributed to the regularity (smoothness) of the channel bed. Lack of irregularities would lead to lack of diffusion, promoting the persistence (i.e., permanence) of the tidal bore (see the experience of the Araguari river, in Brazil; Ponce, 1989).
General comment In general, clarity in the writing is lacking. This is common in a highly technical paper; I do not see how this could be readily improved.
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