I have no idea what physical system you are dealing with, but with no data except nitrate, I think all you can consider is a simple mass-balance model: nitrate = nitrate_in - nitrate_out - consumption. Perhaps you have enough data to fit a first order decay constant for consumption. David David Parkhurst (dlpark@xxxxxxxx) U.S. Geological Survey Box 25046, MS 413 Denver Federal Center Denver, CO 80225 "Vinson, Janie" <Janie_Vinson@xxx To: "'dlpark@xxxxxxxx'" <dlpark@xxxxxxxx>, "'nplummer@xxxxxxxx'" thtech.com> <nplummer@xxxxxxxx> cc: In-Reply-To: <FC461288E0BAD5119BCE00306E00411C7D177B@xxxxxxxxx> 02/05/02 01:45 PM Subject: Nitrate Predictions David and Niel, Thanks for your time, I know that you are both very busy. Your student in 1998, I hope that you will have an answer to a rather simplistic question: what model to use to predict nitrate levels over the long term (years)? The data could be as minimalistic as only nitrate concentrations (no alkalinity, etc.), so my next question: what is the minimal amount of data necessary to run the model of choice? Obviously, efficiency is a primary factor. Any help/guidance is greatly appreciated_ Janie
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:
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1436 since Jan 22, 1998.