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Media type:
E-Book;
Thesis
Title:
Hydraulic tomography
:
a new approach coupling hydraulic travel time, attenuation and steady shape inversions for high-spatial resolution aquifer characterization
Parallel title:
Hydraulische Tomographie: Ein neuer Ansatz, zur Verknüpfung von hydraulischer Laufzeit-, Dämfungs- und Steady Shape-Inversion, zur räumlich hochaufgelösten Aquifercharakterisierung
Description:
Hydraulic travel time, attenuation, and steady shape inversions are complementary methods for tomographic aquifer characterization. In this work, a coupled procedure is pre-sented that facilitates the determination of the spatial distribution of hydraulic conductivity, diffusivity, and specific storage in heterogeneous groundwater systems. The procedure is first applied to a highly heterogeneous sedimentary aquifer analogue that is implemented as a two- and three-dimensional case study in a numerical flow model. By interpreting the observations from multiple simulated short-term pumping tests, the analogue is successively reconstructed in two and three dimensions. Final results demonstrate the high potential of the coupled procedure for identifying the dominant structural elements and the composition of the sedimentary deposit. Consequently, the coupled inversion scheme is assessed at a field test site. As in the numerical study, the data set for the inversion is derived from a series of short-term pumping tests. The successful two-dimensional high-resolution aquifer reconstruction, as well as the substantial agreement between the individual inversion results, strongly proves the reliability of this coupled inversion scheme for spatial aquifer characterization. As well as the hydraulic tomography approach, numerous traditional methods are also used for the aquifer ...