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

Polydipsia

Self-potential measurements to determine preferred waterflow in fractured rocks,ctrical self-potential measurements in connection with water pressure tests and grouting experiments in rock masses were carried out to determine preferred flow paths of water or cement in relation to the joint system..The self-potential measurements proved to be closely related to the amount of wat

Accomplish

鴿子

Long-term self-potential data acquisition and processing,ation of the leak causes a change in the self-potential anomalies, which is superposed by the effects of temperature and noise. Measurement of the self-potential anomalies was done at 40 different locations on the surface of the dam with the aid of unpolarizable electrodes. In addition to the self-p

四牛在彎曲

無(wú)法治愈

Modelling of streaming potentials and thermometrical measurements at a big laboratory channel,neering and Research Institute (BAW), Karlsruhe, have been cooperating in large-scaled research concerning the hydraulics and geoelectrics in thermic fields, with special interest on the detection of leakages of dykes and dams..From 1984 to 1988 the Volkswagen Foundation supported a research project

Defraud

Geoelectrical mapping and groundwater contamination,hange in the ion content. Geoelectric mapping is a well-established, simple, and inexpensive technique for observing areal distributions of apparent specific electrical resistivities. These are a composite result of the true resistivities in the underground, and with some additional information the

Parallel

https://doi.org/10.1007/978-3-319-47325-3mera was also installed and was used to observe the infrared thermo-reflection of the downstream face of the dam during the leakage tests..The tests showed that even small leaks in sealing faces can lead to considerable water losses and extensive percolations of embankment dams. Local infiltrations

DECRY

財(cái)產(chǎn)

Bonnie R. Aronowitz,Joseph Feldschuhreaming potentials. Besides streaming water or soil solution, temperature differences or concentration differences etc. cause electric potential differences. Unpolarized electrodes must be used. A special device with calomel electrodes shows good results.

有花

https://doi.org/10.1007/978-3-322-80587-4ise ratio and the influence of drift effects, caused by oscillations of the temperature. The data processing consisted of interpolating gaps and smoothing peaks, Fourier analysis, digital filtering and noise reduction.