Abstract
The effect on groundwater in Kakuma-No.2-well at Kanazawa University by the Noto Hanto Earthquake struck at 9:41 a.m. 25th March 2007, reported in this study. The groundwater level indicated 39m in depth during operation, whereas the level indicated 31m in depth without operation. The electric conductivity (EC) of the groundwater during operation showed 18.7mS/m, whereas the EC showed 18.2mS/m without operation, using automatic measurement system. The EC tend to be higher in summer-autumn than that of winter-spring, which had not changed the value before and after the earthquake. On the other hand, the groundwater temperature showed 12.6℃ during operation whereas the temperature showed 12.3℃ without operation. The temperature clearly increased 0.5℃ for 2 weeks before the earthquake, and decreased the temperature after the earthquake. The results suggest that the earthquake gave the effect on the groundwater temperature as well. We need comparison with the record collected from the nearest area of epicenter in our future work.
