Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) A field assessment of high resolution aquifer characterization based on hydraulic travel time and hydraulic attenuation tomography
Autor Brauchler, R.; Hu, R.; Dietrich, P.; Sauter, M.;
Journal / Serie Water Resources Research
Erscheinungsjahr 2011
Department MET;
Band/Volume 47
Heft 3
Sprache englisch;
Abstract In this study the potential of an inversion approach based on hydraulic travel time and hydraulic attenuation tomography was assessed. Both hydraulic travel time andhydraulic attenuation tomography are based on the transformation of the transient ground water flow equation into the eikonal equation using an asymptotic approach.The eikonal equation allows the calculation of pressure propagation and attenuation along trajectories, which is computationally efficient. The attenuation and travel timebased inversion approaches are naturally complementary: Hydraulic travel times are determined by the hydraulic diffusivity, a combination of hydraulic conductivity andspecific storage, whereas the attenuation is determined solely by specific storage. The potential of our hydraulic tomographical approach was investigated at a wellcharacterized sand and gravel aquifer located in the Leine River valley near Göttingen, Germany. The data base for the hydraulic inversion consists of 392 crosswell slug interference tests performed between five wells, in which the positions of the sources (injection ports) and the receivers (observation ports), isolated with double packer systems, were varied between tests. The results have shown that the combination of hydraulic travel time and hydraulic attenuation tomography allows the reconstruction of the diffusivity and storage distribution in two and three dimensions with a resolution and accuracy superior to that possible with type curve analysis.
ID 10723
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=10723
Brauchler, R., Hu, R., Dietrich, P., Sauter, M. (2011):
A field assessment of high resolution aquifer characterization based on hydraulic travel time and hydraulic attenuation tomography
Water Resour. Res. 47 (3), W03503