@article{oai:ir.kagoshima-u.ac.jp:00007404,
 author = {Matsui, Tomoaki and 松井, 智彰 and Kinoshita, Kisei and 木下, 紀正 and Machida, Shoichi and 町田, 昌一 and Takahara, Hiroyuki and 高原, 弘幸 and Yamamoto, Masashi and 山本, 昌史 and Kanagaki, Chikara and 金柿, 主税},
 issue = {1},
 journal = {南太平洋研究, South Pacific Study},
 month = {Jan},
 note = {Continuous recording of volcanic clouds at Io-dake taken with digital and vidio cameras has been carried out since 1998 in Satsuma-Iojima, and also with automated monitoring system using a web camera since 2003. The results of the photo observation with one-hour interval for three years during 2000 and 2002, supplemented with video records with ten-minute interval, were summerized concerning the behaviour of the volcanic clouds, with special attention to their heights. Io-dake was almost always ejecting volcanic clouds with rather constant strength from the summit crater, while explosive eruptions were rarely seen. The cloud height seemed to be affected by wind velocity above the summit crater. That is, cloud height and wind velocity were roughly in reciprocal proportion to each other. In addition to this, an extra-rise in summer time was observed, compared with other seasons. The summit is often covered with a cap cloud in humid weather, especially in the summer.},
 pages = {1--12},
 title = {Automatic Long Time Observation of the Volcanic Clouds at Satsuma-Iojima, Kyushu, Japan},
 volume = {27},
 year = {2006}
}