Measurement of Friction Coefficient on a Powder Layer and Fluid Dynamic Study

Isawo Iizawa	Graduate school of Human and Environmental Studies, Kyoto University
	606-8501	Yoshidanihonmatsu-cho, Sakyo-ku, Kyoto, Japan
	e-mail:	iizawa@gaia..kyoto-u.ac.jp

Satoshi Sakai	School of Earth Sciences, IHS, Kyoto University
	606-8501	Yoshidanihonmatsu-cho, Sakyo-ku, Kyoto, Japan
	e-mail:	sakai@gaia.h.kyoto-u.ac.jp

Eriko Suda	School of Earth Sciences, IHS, Kyoto University
	606-8501	Yoshidanihonmatsu-cho, Sakyo-ku, Kyoto, Japan
	e-mail:	suda@gaia.h.kyoto-u.ac.jp

Takeshi Saito	Graduate school of Human and Environmental Studies, Kyoto University
	606-8501	Yoshidanihonmatsu-cho, Sakyo-ku, Kyoto, Japan
	e-mail:	saitou@gaia.h.kyoto-u.ac.jp

Hiroki Kamata	School of Earth Sciences, IHS, Kyoto University
	606-8501	Yoshidanihonmatsu-cho, Sakyo-ku, Kyoto, Japan
	e-mail:	kamata@gaia.h.kyoto-u.ac.jp