抄録
The aquiculture along the Sanriku coast was heavily damaged by destructive high waves, tsunami, especially in Miyako bay, caused by the Tokachi-oki earthquake on May 16th 1968. In Miyako bay, facilities to raise crops (oysters, lavers, wakame and so on) were entirely destructed. They were not only washed away by the waves but were also drifted against lumbers which flowed out from the port to the bay.
In spite of such heavy damages, farmers began to restore the destructed facilities and tried to reopen the raising of crops. The main factors which enabled the reconstruction are as follows. 1) Aquiculturists were consisted of small scale farmers, which bears the instability of production caused by natural disasters and by fluctuation of prices. For example, they are engaged in part-time jobs other than aquicultrure, facilities are evenly distributed among them, farms are exchanged every year, and so on. 2) A part of cost necessary to buy new facilities was subsidized by national and prefectural governments but it is not always sufficient. As it is very difficult to protect aquiculture from tsunami under present economic and technical conditions, it is especially important for national and local governments to take reconstruction measures effectively.
