Makoto Taniguchi, RIHN Research Institute for Humanity and Nature, Kyoto, Japan, Akinobu Miyakoshi, AIST, Tsukuba, Japan, Hideki Hamamoto, CESS Center for Environmental Science in Saitama, Geo technical group, Saitama, Japan and Vladimir Cermak, Academy of Sciences of the Czech Republic, Prague, 182, Czech Republic