|
| | Abstract | | Measuring the temporal variation of water content along a slope is important for preventing slope disasters. We conducted repeated monthly geoelectrical surveys since February 2011 on one slope of an embankment in the large-scale rainfall simulator of the National Research Institute for Earth Science and Disaster Prevention (NIED). In order to confirm the relationship between water content and resistivity changes in the slope due to heavy rain, we conducted seven artificial rain experiments at the embankment, controlling the total amount and intensity of rainfall using the mobile rainfall simulator. We observed soil water content and conducted geoelectrical measurements on the slope of the embankment before, during and after the artificial rains. The changes in apparent resistivity took place almost simultaneously with changes in water content. This indicates that geoelectrical monitoring is effective for observing changes in the water content of the slope of an embankment caused by heavy rain. |
|
|
|
| |
|