Access Snow and Ice Research Center SUYOSHI, NAGAOKA-SHI, NIIGATA-KEN, 940-0821, JAPAN TEL: +81 258 35 7522 FAX: +81 258 35 0020 Shinjo Cryospheric Environment Laboratory TOKAMACHI, SHINJO-SHI, YAMAGATAKEN, 996-0091, JAPAN TEL: +81 233 22 7550 FAX: +81 233 22 7554