Investigation of Rikuzentakata city of Iwate prefecture and geo-environmental Approach

- Ground settlement, waste materials and restoration of saline agricultural land -

Abstract

The great east Japan Earthquake hit Japan on 11 March 2011 and triggered extremely destructive tsunami waves. Field investigation and soil test for its chemical analysis were conducted in Rikuzentakata city of Iwate prefecture on 30the June and 1st July, 2011 as the second investigative team in Kyushu Chapter of JGS. This city was one of the major affected areas by the tsunami. It was reported that this huge sea water had tremendously affected the various geo-environmental problems such as ground settlement, waste materials and agricultural land damaged by sea water. It was also introduced that an innovative approach has been taken to restore the saline soil by using compost containing Halo bacteria.