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| | Abstract | | Measuring the temporal variation of water content along a slope is important for preventing slope disasters. In order to investigate the relationship between water content and resistivity changes in the slope due to heavy rain, we conducted an artificial rain experiment at the embankment in the large-scale rainfall simulator of NIED, controlling the total amount and intensity of rainfall using the mobile rainfall simulator. In this experiment, a high-speed resistivity profiling system which can provide 576 (24 x 24) data in about 10 seconds was used for the resistivity monitoring on the slope of the embankment. The resistivity measurements were carried out at intervals of 1 or 2 minutes simultaneously with the measurements of soil moisture content during the rainfalls. The result shows that the high-speed geoelectrical monitoring is effective for observing soil moisture changes caused by heavy rain in real time. |
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