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Journal of the Meteorological Society of Japan
A measurement was made on the fall velocity of ice crystals at Asahikawa, Hokkaido, in February 1968. The ice crystals were freely falling and drifting in supercooled fog at temperatures of about -20*. Prevailing forms of the ice crystals were the minute assemblage of plates, the germ of skeleton form and the irregular germ. The fall velocity was measured by the photographs of their trajectories and by the simultaneous observation of wind speed, and it was found that the ice crystals with adoi:10.2151/jmsj1965.48.4_287 fatcat:bse3k35az5bgjhh4nwp3cfxnwu