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Rio Grande mxing model



Hi:

	I'm trying to model the mixing of two streams (Rio Grande
	and the Pecos) in Lake Amistad.  I've obtained the
	values below for Aug/1984 (I'd like to compare to 8/1998 later).
	I'm using the measured inflow rates for the mixing ratios.
	1- Rio Grande, 2-Pecos & 3- is a Bouy in the lake.
	
	Is there something I can do to decrease uncertainty
	and reduce the # of models (I get > 100).

	Thx.
Ranjan
----------------------

TITLE Rio Grande & Pecos Mixing at Buoy1
SOLUTION_SPREAD
	-units mmol/L
Number	pH	Ca	Mg	Na	Cl	S(6)	Si	K	temp	Alkalinity
1	7.6	1.85	0.3745	3.6	0.96	2.5	0.267	0.138	27.5	1.0 as CaCO3
2	7.6	2.25	2.016	13.04	13.8	2.91	0.217	0.15	28.5	1.10 as CaCO3
3	8	1.80	0.864	5.65	3.95	2.18	0.30	0.13	21.0	1.20 as CaCO3
MIX 1
	1 0.85
	2 0.15
	3 1.0
INVERSE_MODELING 1
	-solution 1 2 3
	-uncertainty 0.20
	-phases
		Halite	precip
		Gypsum
		Kaolinite
		Ca-montmorillonite
		CO2(g)
		H2O(g)	precip
		Calcite
		Chalcedony
		Biotite
	-range
PHASES
Biotite
   KMg3AlSi3O10(OH)2 + 6H+ + 4H2O = K+ + 3Mg+2 + Al(OH)4- + 3H4SiO4 
        log_k  0.0      
END

*****************************************
* Ranjan S. Muttiah                     * 
* Associate Professor                   *
* Texas Agricultural Experiment Station *
* 808 East Blackland Road               *
* Temple, Texas 76502                   *
* Tel: 254-774-6103                     *
* Fax: 254-770-6561                     *
* email: muttiah@xxxxxxxxxxxxx          *
*****************************************

-----Original Message-----
From: David L Parkhurst [mailto:dlpark@xxxxxxxx]
Sent: Tuesday, May 28, 2002 7:35 AM
To: Ranjan S. Muttiah
Subject: 


Ok. Your name will be added to the PHREEQC mailing list.




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