Dear,

Rahter then explaining these words, I suggest you should read (study)
some basic notes on open-channel hydraulics (eg Ven Te Chow, French R.H.
or Chanson, Hubert).

Regards,
Patrik


raffaele serpico schreef:

> 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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--
Patrik Peeters
AMINAL, afdeling water
Team Watersysteemkennis
Hydroloog buitendienst Antwerpen
Copernicuslaan 1, bus 2
B - 2018 Antwerpen

tel. 03-224 62 40
fax. 03-224 62 35
gsm. 0478-79 51 32

email. patrik.peeters@...