Numerical flow models and their calibration using tracer based ages: Chapter 10




Any estimate of ‘age’ of a groundwater sample based on environmental tracers requires some form of geochemical model to interpret the tracer chemistry (chapter 3) and is, therefore, referred to in this chapter as a tracer model age. the tracer model age of a groundwater sample can be useful for obtaining information on the residence time and replenishment rate of an aquifer system, but that type of data is most useful when it can be incorporated with all other information that is known about the groundwater system under study. groundwater fl ow models are constructed of aquifer systems because they are usually the best way of incorporating all of the known information about the system in the context of a mathematical framework that constrains the model to follow the known laws of physics and chemistry as they apply to groundwater flow and transport. It is important that the purpose or objective of the study be identified first before choosing the type and complexity of the model to be constructed, and to make sure such a model is necessary. The purpose of a modelling study is most often to characterize the system within a numerical framework, such that the hydrological responses of the system can be tested under potential stresses that might be imposed given future development scenarios. As this manual discusses dating as it applies to old groundwater, most readers are likely to be interested in studying regional groundwater flow systems and their water resource potential.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Numerical flow models and their calibration using tracer based ages: Chapter 10
Year Published 2013
Language English
Publisher International Atomic Energy Agency
Publisher location Vienna, Austria
Contributing office(s) National Research Program - Eastern Branch
Description 14 p.
Larger Work Type Book
Larger Work Subtype Other Government Series
Larger Work Title Isotope Methods for Dating Old Groundwater
First page 245
Last page 258