> When 13C is selected as a costrains, computed 13C values is almost same comparing with the observed value in radiocarbon calculation by using netpath, but calculated 14C values quite different from observed 14C respectively 6.34 and 0.33. Also examples 5, 6 and 7 in netpath manual, this case is present. I'm not sure what you mean. In example 5, the first model has computed C13 = -13.6, which is substantially different from -6.2. Niel goes on to try different models that are consistent between the computed and measured C13. > Do we have to take in to consideration only calculated and observed values of 13C? For a mole-balance model to be possible, it must have a computed C13 that is consistent with measured values. If the model is not consistent with the C13, it can not be correct. If it is consistent, it may or may not be the correct model. It is possible to have two models that account for C13, but give different C14 ages as seen in the second and fourth models of example 5. David David Parkhurst (dlpark@xxxxxxxx) U.S. Geological Survey Box 25046, MS 413 Denver Federal Center Denver, CO 80225 Project web page: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled
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 2389 since Jan 22, 1998.