Titlebook: Detection of Subsurface Flow Phenomena; Georg-Paul Merkler,Heinz Militzer,Josef Brauns Conference proceedings 1989 Springer-Verlag Berlin

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先驅(qū)

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Strategic Framework—Build Your Brandt by supporting observations of conductivities in wells and geoelectric depth soundings. The method may be used to monitor the extent of groundwater contamination at a specific time as well as the change of a contamination plume with time, by carrying out repeated measurements. Examples for both are presented.

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Data quality for engineering self-potential surveys,g misinterpreted as anomalies generated by sources of interest. The use of a telluric current monitor to record time-varying potentials in the survey area, inspection of site plans, and careful field observation assist in noise source recognition. Magnetic or electromagnetic survey data also are helpful for detection of metallic noise sources.

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Geoelectrical mapping and groundwater contamination,t by supporting observations of conductivities in wells and geoelectric depth soundings. The method may be used to monitor the extent of groundwater contamination at a specific time as well as the change of a contamination plume with time, by carrying out repeated measurements. Examples for both are presented.

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Data quality for engineering self-potential surveys,oise, and use of appropriate data reduction techniques. Survey procedures that minimize movement of the base reference electrode and account for electrode drift and polarization help to reduce the effects of cumulative error. Input impedance of the measuring instrument must be considerably greater t

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Numerical modeling of self-potential anomalies due to leaky dams: Model and field examples,. however, is not well understood. In this paper we apply a two-dimensional computer-code to calculate self-potential anomalies for a model of a leaky dam and then apply the code to some field data for a dam site in the United States. Fluid flow and electrical current flow are coupled processes; tha

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Streaming potential in nature,sion for the streaming potential..In the following years a number of scientists studied the phenomenon. BIKERMAN (1932) showed that each electric streaming potential causes an electric current in the contrary direction. SWARTZENDRUBER postulated in 1967 that this electric field tries to stop the str

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