Natural Attenuation Concepts

Virtual Aquifers will also be a tool for the transfer of know-how to increase acceptance of the natural attenuation concept in administrative circles and by problem owners. Processes during investigation and remediation of a site can be made transparent at relatively little effort and costs, transferring current consolidated knowledge on natural attenuation to all participants. 

In the framework of an international case comparison in the Spittelwasser area (Anonymous 2000), situated in the so-called Chemistry Triangle of the upper Elbe River system, the German group mainly planned investigations on the effects of plant growth and of natural attenuation processes of organic and inorganic contaminants in floodplain sediments and soils (For-stner et al. 2000). In practice of this concept. 

This leads naturally to the concept of X-ray attenuation, defined as the natural logarithm of the transmitted intensity fraction ... 

The previous workshop introduced the concepts of capacitance and attenuation. These are natural characteristics of a system, as are dead time and the process time constant. Now that we have a basic understanding of the way processes behave, we can apply this knowledge to control the process response. 

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