[MIS02-P06] Backscattering characteristic of volcanic eruptions based on LIDAR observation around Sakurajima Volcano
Keywords:Volcanic smoke colored white, Volcanic smoke include volcanic ash, LIDAR, Backscattering intensity, Depolarization ratio, Sakurajima Volcano
Depolarization ratio of white plume is almost the same as water cloud (0.05-0.1). On the other hand, depolarization ratio of volcanic ash cloud is much higher (0.40-0.45) than the white plume and water cloud. The highest value of depolarization ratio (0.72) was obtained only just above the crater immediately after eruptions for short-term. The high depolarization ratio is caused by larger density of volcanic ash particle with non-spherical shape.