A strong earthquake of maginitude 7.2 occurred in the southern part of Iwate Prefevture at 8:43 a.m. on June 14, 2008. This earthquake was named "2008 Iwate-Miyagi Nairiku Earthquake" by the Japan Meteorolagical Agency. The Maximum seismic intensity was 6 upper, which was observed in Oshu City, Iwate Prefecture and Kurihara City, Miyagi Prefecture. Many landslides were induced by the earthquake in Chikadate-Kurikoma-koen line. At the obserbvation site, as the emargency construction method, earth removal was done. But many unstable rocks were found at the down part of slope. Observation with using ground tiltmeters for unstable rock had been done until permanent measures were finished. So the result of observation is reported. |