hallo everyone
I'm Raffaele from Italy,I'm new at this web group, I
recently gradualed in Env.Sciences, and I'm getting
familiar with Hec-Ras, Now I'm study technical
reference and I have some trouble with technical
english worlds . Could someone help?
-conveyance
-mixed flow regime
-sub,supercritical flow
thanks
Raffa
--- alantan137 <alantan137@...> wrote:
> Hey, I am new to this website and have not yet have
> the chance to
> see what had been posted previously. But I do have a
> doult that I
> like to clear. There were a few studies carried out
> on a river
> system to study the flooding problem.The big problem
> is that people
> had been using surveyed data that had been related
> to a so
> called "common datum". The river stretches over a
> distance of 120km.
> The elevation ranges from 6m (MSL)(over the flood
> plain) to 1250m
> (MSL)(head water). There is a likely hood that
> longitudinal profile
> would be distorted due to the error in the survey.
> When using such
> information for running model like ISIS or MIKE II,
> could the flood
> level generated be used?
>
> I will define "common datum". There are many BM used
> for tieing up
> the river long. profile survey. It was assumed that
> they were all
> related to mean sea level (MSL). But from
> information collected,
> there can be a difference of 0.5 to 2 m between BM
> when related.
>
> ALAN
>
>


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