Detection of Subsurface Flow Phenomena: 27 - Brossura

Brossura

ISBN 10: 3540518754 ISBN 13: 9783540518754

Casa editrice: Springer Verlag, 1990

Riassunto

Geophysical methods can be useful tools for detection of leakages in dams and waste disposal sites. Self-potential/geoelectrical and thermometrical techniques as well as infrared imagery procedures are still under development in this field of application, but there already is much international experience available. The papers presented here give a good review of the international state of the art.

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Contenuti

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.

Dettagli dell'edizione

• Editore: Springer Verlag
• Data di pubblicazione: 1990
• Lingua: Inglese
• ISBN 10: 3540518754
• ISBN 13: 9783540518754
• Rilegatura: Copertina flessibile
• Numero di pagine: 528
• Redattore: Merkler Georg-paul, Militzer Heinz, Hötzl Heinz, Armbruster Heinrich, Brauns Josef
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