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Preliminary Results of Weather Radar Observations of Sakurajima Volcanic Smoke
Author(s) -
Masayuki Maki,
Masato Iguchi,
Takeshi Maesaka,
Takahiro Miwa,
Toshikazu Tanada,
Tomofumi Kozono,
Tatsuya Momotani,
Akihiko Yamaji,
Ikuya Kakimoto
Publication year - 2016
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2016.p0015
Subject(s) - volcanic ash , volcano , radar , meteorology , remote sensing , weather radar , geology , volcanic gases , doppler radar , vulcanian eruption , polarimetry , environmental science , seismology , geography , physics , aerospace engineering , engineering , optics , scattering
Preliminary results of quantitative analysis of volcanic ash clouds observed over the Sakurajima volcano in Kagoshima, Japan, were obtained by using weather radar and surface instruments. The Ka-band Doppler radar observations showed the inner structure of a volcanic ash column every two minutes after an eruption. Operational X-band polarimetric radar provides information on three-dimensional ash fall amount distribution. The terminal fall velocity of ash particles was studied by using optical disdrometers, together with the main specifications of observation instruments.

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