Transcription of Chapter 1: Lumped parameter models - IAEA
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Chapter 1: Lumped parameter models - IAEA
2 Lumped parameter models Institute of Nuclear Physics, Cracow, Poland GSF-Institute for Hydrology, Neuherberg, Germany nvironmental tracer ater ages in fractured rocks processes whereas their A. ZUBER P. MA OSZEWSKI INTRODUCTION A comprehensive description of the Lumped - parameter models applicable to the interpretation of environmental tracers in groundwater systems is given. It will be shown that the Lumped - parameter models are particularly useful for interpreting the tracer data which were obtained at separate sampling sites, when it is neither possible, nor justified, to use distributed- parameter models , as the latter require more detailed knowledge of the investigated system, which is often unavailable. A more detailed description of the approach and a number of examples can be found in Ma oszewski and Zuber (1996) and in other references given further.
(2.1) expressed by recharge ra. t. w = V. m /I (2.1a) If a system can be approximated by unidimensional flow pattern, this definition yields t. w = x/v. w, where x is the length for which t. w. is determined, and v. w. is the mean water velocity, defined below. Darcy’s velocity (v. f) is defined as the ratio of Q/S, S being the cross-section ...
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