パーシベルを用いた桜島産火山噴出物の落下速度に関する実験的測定 [in Japanese] Experimental Measurement on Falling Velocity of Volcanic Ash from Sakurajima Volcano by Using PARSIVEL Disdrometer [in Japanese]
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We performed large scale experiment to measure the falling velocity of volcanic material from Sakurajima volcano by using PARSIVEL. The PARSIVEL is laser-optical based disdrometer and measures size and falling velocity of the grains. Volcanic materials from Sakurajima volcano were fallen from 16 m of height, and their size and falling velocity were measured by the PARSIVEL. The experimental results provide the relation between the size and falling velocity as v = 5.900D0.530. This equation well replicates the experimental results than that in previous studies.
京都大学防災研究所年報 (58), 91-94, 2014