Re: [gwmodel] Island modeling
- Hi Patrick,
Your explanation was very useful, it seems simple but really practical for
these unknown situations.
On Tue, Feb 1, 2011 at 1:24 AM, Patrick Delaney <patrickgdelaney@...
> Pete is correct, this is exactly what I was alluding to. Of course, this is
> a generalization because I don't know anything about the subsurface
> characterisation of the island hydrogeology or surface hydrology, but in
> general, with simple unconfined systems, it is possible to use large K and R
> or small K and R to achieve similar result water levels in the system. The
> reason this is important to recognize is because it can influence
> dramatically different results when you are evaluating the potential
> sustainable yield of the aquifer. Using low K and R would give you a very
> conservative estimate of how much water you can extract, while using a large
> K and R would give you a very optimistic estimate of how much water you can
> Hope this helps.
> Patrick Delaney
> To: firstname.lastname@example.org <gwmodel%40yahoogroups.com>
> From: psinton@... <psinton%40aquageo.us>
> Date: Fri, 28 Jan 2011 08:37:25 -0700
> Subject: Re: [gwmodel] Island modeling
> Without much data, it is possible to use large K and large R or small K
> and small R, and achieve equally good match to your limited data
> *Pete Sinton*
> On 1/28/2011 3:05 AM, jalal mirnezami wrote:
> > Thank you Patrick, your guidance was really great
> > But now with your guidance some new questions have come to my mind. From
> > your answer I got that in a steady state situation, the rulling
> > are R and K, and also the results taken from model runs will be limited
> > their (R and K) values. Ok, thats right, but what did you mean by this
> > part
> > : "then you will be able to modify the recharge and hydraulic
> > values within pretty large ranges of reasonable values and still acheive
> > pretty decent calibration "
> > let me tel you what I got through your words. you mean, by changing R
> > and K
> > values I can calibrate the model? Is it right?
> > Again thanks for your help, and sorry for taking your time
> > J.Mn.