Re: TDR Equation Request

[owner-sowacs@aqua.ccwr.ac.za]

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Maybe this reference interests you (there are some good papers related
on):

Symposium and Workshop on TDR in Environmental, Infraestructure, and
Mining Applications. K.M. O'Connr, et. al. Bureau of Mines, Minneapolis,
MN. Twin Cities. Research Center. Sept. 94 (609 pp)



owner-sowacs@aqua.ccwr.ac.za wrote:

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>
> Pedro Flombaum writes
>
> Hi!
>
> I mesured with a TDR 2 lenght profundities (10 and 25 cm) to establish
> the soil moisture volumetric constant. What I want to know if I can
> somehow substrat the short value to the long one, so I could have an
> idea of what is happenig at the lowest portion of the soil.
>
> If I not wrong the TDR integrate the moisture over the wave guide, so
> the substrat must be relative to the length of the guide. I suppose
> that the equation should be something like:
>
>          Lab*Oab - La*Oa
>         ------------------  =  Ob
>              Lb
>
> Where La is the shortest lenght, Lab is the longest and Lb is the
> diference betwen them. Oa is the volumetric moisture constant from
> the shortest wave guide, Oab is the volumestric constant from the
> longest wave guide and Ob is the volumetric constant I am serching
> for.
>
> Perhaps you could contact me with someone working in this subjet or
> recomend me a paper,
>
> I would really apreciate your information,
>
> Thanks in advance,
>
> Lic. Pedro Flombaum