[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Transport problem

> In selected output-file of version 2.2 (upward) alkalinities are always

You need to use the identifier -alkalinity in SELECTED_OUTPUT to print the
alkalinity to the selected-output file. Including Alkalinity in the list
for -totals does not work for alkalinity.

> (see excel-sheets) and pH-values are only realistic for cell 1 and cell

Both versions appear to be consistent in calculating a pH of 10. I believe
the program is making the proper calculation for the conditions that you
have specified. You need to look at the changes in the distribution of
species for the surface complexes to see what is causing the high pH
values. It is probably related to the selection of log K values for the
surface complexes and the initial conditions.


David Parkhurst (dlpark@xxxxxxxx)
U.S. Geological Survey
Box 25046, MS 413
Denver Federal Center
Denver, CO 80225

Project Home Page
Complete Water Resources Division Software
USGS Home Page
Water Resources Division Home Page
NRP Home Page
Help Page
USGS Privacy Statement       

Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. 

The URL of this page is: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/mail/msg00270.html
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 2602 since Jan 22, 1998.