Detection of Subsurface Flow Phenomena

ISBN-13: 9783540518754 / Angielski / Miękka / 1990 / 514 str.

Georg-Paul Merkler; Heinz Militzer; Heinz Hatzl

Opis

Papers from a symposium held in Karlsruhe, March 14-18, 1988.

Spis treści

Effect of leaks in dams and trials to detect leakages by geophysikal means.- The project of the volkswagen foundation "geoelectrics/thermometry".- The application of geoelectrical and thermal measurements to locate dam leakages.- Data quality for engineering self-potential surveys.- Numerical modeling of self-potential anomalies due to leaky dams: Model and field examples.- Mathematical models of self-potential fields (geoelectrical or geothermal) for detection of subsurface flow phenomena.- Streaming potential in nature.- Self-potential surveys on waste dumps theory and practice.- Self-potential generation by subsurface water flow through electrokinetic coupling.- Fundamentals of streaming potentials in geophysics: Laboratory methods.- Copper-copper sulfate electrodes for self-potential and magnetotelluric measurements.- Self-potential measurements to determine preferred waterflow in fractured rocks.- Laboratory studies on the characteristics of electrodes used for streaming-potential measurements.- Long-term self-potential data acquisition and processing.- Model experiments on a small test channel. Empirical correlations between flow potentials and the hydraulic field.- Aspects concerning the results of laboratory geoelectric measurements for the study of hydrogeological phenomena.- Modelling of streaming potentials and thermometrical measurements at a big laboratory channel.- Geoelectrical mapping and groundwater contamination.- Complex resistivity measurements on granites.- The MIMAFO direct current cross-hole method: A support to hydraulic investigations.- Geoelectrical measurements at the salt mine asse to observe an underground barrier construction.- Geoelectrical measurements at the KTB location.- Some problems concerning the measurement of near-surface streaming potentials as well as of surface temperatures for the detection of near-surface flow phenomena.- Temperature disturbance in a dam due to leakage.- Data processing by temperature measurements.- Application of thermal ir-techniques for reconnaissance of dam and barrage defects in an early state, analysis of dump sites and tunnel condition surveys.- Detection of river-infiltrated water flow by evaluation of hydrogeologic, hydrochemical and hydrothermal data using numerical groundwater models.- Geophysical methodology for subsurface fluid flow detection, mapping and monitoring: An overview and selected case history.- Electrical surveys using the method of the natural electrical field; new investigations.- An attempt to determine the earth embankment conditions by resistivity investigation.- Aspects concerning the detection by geoelectrical methods of seepage at some romanian dams.- Main topics of the round table discussion.- Some detection methods used for the storage reservoir at iffezheim, FRG.- The black forest observatory Schiltach.