Re: TDR and infiltration runoff concerns

[Tom Litschmann]

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Hello Neelam,

during last year we were made similar experiences with measuring
infiltration under lawn. We were used VIRRIB soil  moisture sensors, placed
at three layers. On our web site http://www.zf.mendelu.cz/amet in part
Animations you can see some very interesting animations about some cases of
infiltration during rainy periods.

Best regards

Tom Litschmann

> 
> I am working on runoff generating areas in a field (Bare land). I would like
> to measure volumetric soil water content with respect to time. Although TDR
> seems to be the best way to measure water content but I have concerns with
> infiltration execss mechanism or saturation excess mechanism of runoff. I am
> working on an area of one hectare. I want to put TDR on grid basis having a
> grid size of 10*10 m. Does anyone has any suggestions about the
> identification of runoff generating mechanisms with TDR. I would like to
> know about maximum length of cable so that signal will reach machine
> accurately. Which method is better for TDR calibration. Any suggestions will
> be appreciated.
> 
> Neelam Gupta
> Ph.D student
> School of Engg.,
> University of Guelph, Guelph, Ontario, Canada, N1G 2W1.
> E-mail : ngupta@uoguelph.ca
>             gupta@net1.eos.uoguelph.ca