Transient Hydraulic Tomography and Tracer Tomography

ISBN-13: 9783639159400 / Angielski / Miękka / 2009 / 108 str.

Junfeng Zhu

Opis

Detailed spatial distributions of hydraulicparameters are imperative to improve our ability topredict water and solute movement in the subsurface.Transient hydraulic tomography (THT) is acost-effective technique for characterizing theheterogeneity of hydraulic parameters in thesubsurface. In this study we developed an efficientsequential successive linear estimator (SSLE) forinterpreting head data from transient hydraulictomography to estimate three dimensional hydraulicconductivity and specific storage fields. We firstanalyzed the cross correlation between transient headdata and hydraulic parameters and covariance oftransient heads using a hypothetical one dimensionalaquifer. This analysis led to an efficient way tointerpret transient heads. To more efficientlyinterpret the transient head data, we developed anestimation approach that utilizes the zeroth andfirst temporal moments of well hydrographs, insteadof drawdown itself. We further extended thehydraulic tomography concept to tracer tomography andcombine hydraulic/tracer tomography forcharacterizing NAPL (Non-aqueous phase liquid) sourcezones.

O autorze

Junfeng Zhu received his BS and MS in Hydrogeology from Nanjing
University. He worked for Nanjing Hydraulic Research Institute
before obtaining his PhD in Hydrology from the University of
Arizona. He then worked for ARCADIS and later for the University
of Arizona. Zhu now works for Kentucky Geological Survey at the
University of Kentucky.