The tsunami that followed the earthquake at the 11th March in Japan that has destroyed the Fukushima-Daiichi nuclear power plant caused considerable radiation leakage into the atmosphere and into the sea. While principal attention is given to the global effects of the accident consequences, which is relevant for preventive actions related to radiation protection of the population in Japan and other affected countries, less attention is paid to the radioactive contaminant dispersion in the direct surrounding of the power plant (coordinates in latitude, longitude: 37°25’17'’N, 141°1’57'’E) [1].
