Re: characteristic curves

[Jac le Roux <jac@besproeiing.co.za>]

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Hi everyone,
On the subject of charactiristic curve (or moisture retention curve as I
know it).

Could someone point me to information or supply information of typical
curves for a variety of soils ranging from sand to heavy clay (clay contents
ranging from 0 - 60%) in inch vs kPa. I am familiar with mm but would like
to see how this information is treated by the Americans.

Thank you.
Jac le Roux
jac@besproeiing.co.za



----- Original Message -----
From: <owner-sowacs@aqua.ccwr.ac.za>
Sent: Sunday, February 11, 2001 8:29 PM
Subject: characteristic curves


> NOTE:  To get off this list, send email to majordomo@aqua.ccwr.ac.za
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>
> Dear Tarantino
>
> I believe, because we have, for many soils, a pronounced hysteresis effect
> on the soil water characteristic curve.
> It should be stressed in the name of this relationship.
> If the curve was evaluated (if it is the case!) using suction or
desorption
> techniques, the word "desorption" should be considered.
>
> Perhaps, should you consider : - "soil water desorption characteristic
curve"
>
> Regards
>
> Wenceslau
>
>
> At 09:48 11.02.01 GMT, you wrote:
>
> >There are about 12 ways to name the relationship. I vote for
> >
> >  "soil water characteristic curve"
> >
> >However, a rose by any other name would smell as sweat.
> >
> >Glenn Brown
> >Associate Professor
> >Biosystems Engineering
> >Oklahoma State University
> >Stillwater, OK  74078
> >(405) 744-8425
> >gbrown@okstate.edu
> >-----Original Message-----
> >From: owner-sowacs@aqua.ccwr.ac.za <owner-sowacs@aqua.ccwr.ac.za>
> >To: gbrown@ceat.okstate.edu <gbrown@ceat.okstate.edu>
> >Date: Friday, February 09, 2001 10:34 PM
> >Subject: retention curves or characteristic curves?
> >
> >
> >>I have a doubt on how to name the water content/degree of saturation
versus
> >>suction relationship:
> >>
> >>"water/moisture retention curve"
> >>
> >>or
> >>
> >>"soil water characteristic curve"?
> >>
> >>..... yes, I know this is not a fundamental problem, but I am interested
in
> >>your opinion anyway.
> >>
> >>
> >>Alessandro Tarantino
> >>
> >>
> >>
> >>P.S. I am not sure to be still in the unsaturated list. How can I check
it?
> >>
> >>
> >>---------------------------------------------------------
> >>Dr Alessandro TARANTINO
> >>Dipartimento di Ingegneria Meccanica e Strutturale
> >>Universitý degli Studi di Trento
> >>Via Mesiano, 77
> >>38050 Trento, Italy
> >>Phone:  ++39-0461-882519
> >>        ++39-0461-882551 (laboratory)
> >>Fax:    ++39-0461-882599
> >>E-mail: tarantin@ing.unitn.it
> >>Web: http://www.ing.unitn.it/~labgtec/
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >
>
> _____________________________________________________________
> Wenceslau Geraldes Teixeira
> Embrapa - AmazŮnia Ocidental - Brasil
>
> Universit”t Bayreuth
> Bodenkunde - Abt. Bodenphysik
> D - 95440 - Bayreuth - Germany
> Fax: +49 (0)921 552246
>
>
>
>
>
>