[M-IS26] Dynamics of eruption cloud and cumulonimbus; modelling and remote sensing

Thu. May 26, 2016 10:45 AM - 12:15 PM Convention Hall B (2F)

Convener:*Yujiro Suzuki(Earthquake Research Institute, The University of Tokyo), Fukashi Maeno(Earthquake Research Institute, University of Tokyo), Eiichi Sato(Meteorological Research Institute), Takeshi Maesaka(National Research Institute for Earth Science and Disaster Prevention), Chair:Yujiro Suzuki(Earthquake Research Institute, The University of Tokyo), Takeshi Maesaka(National Research Institute for Earth Science and Disaster Prevention)

Volcanic eruption clouds (eruption column, pyroclastic flow, and umbrella cloud) and cumulonimbus are similar phenomena in the atmosphere; they behave as a buoyant plume or gravity current whose driving force is buoyancy. The spreading of eruption clouds leads to the fallout of volcanic pyroclasts, whereas the cumulonimbus results in the precipitation. In general, observed data of eruption clouds reflect the source conditions at the vent, and those of cumulonimbus reflect the environmental conditions. The models that can precisely reproduce the physical processes in such phenomena and the accurate observations have been required. In this session, we will discuss the modelling and observations of eruption clouds and cumulonimbus from the viewpoint of meteorology, volcanology, and remote sensing. The approaches from laboratory experiments, sedimentology and material sciences are also welcomed.

+Add all to schedule

10:45 AM - 11:00 AM

[MIS26-07] Current state and problems of field examination concerning tephra dispersal after pyroclastic eruptions

★Invited papers

*Yasuo Miyabuchi¹ (1.Faculty of Education, Kumamoto University)

11:00 AM - 11:15 AM

[MIS26-08] Reconstruction and estimation of physical parameters of a phreatic eruption on 27 September 2014 at Ontake volcano, Central Japan, based on pyroclastic density current and fallout deposits

*Fukashi Maeno¹, Setsuya Nakada¹, Teruki Oikawa², Mitsuhiro Yoshimoto³, Jiro Komori⁴, Yoshihiro Ishizuka², Yoshihiro Takeshita⁵, Taketo Shimano⁶, Takayuki Kaneko¹, Masashi NAGAI⁷ (1.Earthquake Research Institute, University of Tokyo, 2.Geological Survey of Japan, AIST, 3.Mount Fuji Research Institute, Yamanashi Prefectural Government, 4.Faculty of Modern Life, Teikyo Heisei University, 5.Institute of Education, Shinshu University, 6.Graduate School of Environmental and Disaster Research, Tokoha University, 7.National Research Institute for Earth Science and Disaster Prevention)

11:15 AM - 11:30 AM

[MIS26-09] Transport and resuspension of ash particles from the 2014 phreatic eruption at Ontake Volcano, inferred by pollen sensor data

*Takahiro Miwa¹, Masashi NAGAI¹, Ryohei Kawaguchi¹ (1.National research institute for earth science and disaster prevention)

11:30 AM - 11:45 AM

[MIS26-10] An examination of the impact of initial size distribution of volcanic ash particles on volcanic ash transport simulation in the case of Sinmoe-dake eruption 2011

*Akihiro Hashimoto¹, Yujiro Suzuki², Toshiki Shimbori¹, Kensuke Ishii¹ (1.Meteorological Research Institute, Japan Meteorological Agency, 2.Earthquake Research Institute, The University of Tokyo)

11:45 AM - 12:00 PM

[MIS26-11] Estimation method of tephra deposition using photovoltaic power generation data for model validation of tephra fall simulation.

*Fumichika Uno^1,2, Toshiki Shimbori², Akihiro Hashimoto², Hideaki Ohtake^1,2, Tetsuyuki Ishii³ (1.National Institute of Advanced Industrial Science and Technology, 2.Meteorological Research Institute, 3.Central Research Institute of Electric Power Industry)

12:00 PM - 12:15 PM

[MIS26-12] The feasibility study for the estimating the grain-size distribution of volcanic ashes with the wind profiler LIDAR

*Shunsuke Hoshino^1,2, Toshiki Shimbori², Keiichi Fukui², Kensuke Ishii², Eiichi Sato², Shomei Shirato³, Kenji Fujiwara⁴, Yukio Komazaki^1,2 (1.Aerological Observatory, 2.Meteorological Research Institute, 3.Japan Meterological Agency, 4.Kagoshima Local Meteorological Office)