[S-VC54_1AM2] Volcanic and igneous activities, and these long-term forecasting

Thu. May 1, 2014 11:00 AM - 12:30 PM 411 (4F)

Convener:*Teruki Oikawa(Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Daisuke MIURA(Geosphere Sciences, Civil Engineering Research Laboratory, Central Research Institute of Electric Power Industry), Takeshi Hasegawa(Department of Earth Sciences, College of Science, Ibaraki University), Nobuo Geshi(Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology), Yoshihiro Ishizuka(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Chair:Daisuke Miki(Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University), Fukashi Maeno(Earthquake Research Institute, University of Tokyo)

This session focuses on generation and accumulation processes of magmas, magma-crust interaction and degassing, and modes of eruption, long-term forecast of eruption, dispersal and emplacement of the volcanic products. The discussion spans petrological, geochemical, geophysical, and geological processes related with volcanic activity and products in the past, the present and the future.

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11:00 AM - 11:15 AM

[SVC54-06] The change time from magmatic to phreatomagmatic eruption, in the Hachodaira caldera eruption at Miyakejima Volcano

*Teruki OIKAWA¹, Nobuo GESHI¹ (1.GSJ, AIST)

11:15 AM - 11:30 AM

[SVC54-07] Pumice deposits of the pre-Ofunato stage distributed in northwest of the Miyake-jima volcano, northern Izu-Bonin Arc

*Shohei NANRI¹, Takehiko SUZUKI² (1.Graduate student, Tokyo Metropolitan University, 2.Tokyo Metropolitan University)

11:30 AM - 11:45 AM

[SVC54-08] Formation process of a volcanic island during the 2013-2014 eruption at Nishinoshima, Ogasawara, Japan

*Fukashi MAENO¹, Setsuya NAKADA¹, Takayuki KANEKO¹ (1.Earthquake Research Institute, Univ. Tokyo)

11:45 AM - 12:00 PM

[SVC54-09] Petrological characteristics of volcanic materials ejected during 2012-2013 explosive events on Ioto Island

*Kei IKEHATA¹, Tomoya TAMURA² (1.Faculty of Life and Environmental Science, University of Tsukuba, 2.Graduate School of Life and Environmental Sciences, University of Tsukuba)

12:00 PM - 12:15 PM

[SVC54-10] Compositions of minerals in volcanic products from pre- and the early stage of Aso-4 large-scale pyroclastic flow

Kiyoshi KUROKAWA¹, Hideto YAMASAKI¹, *Toshiaki HASENAKA¹, Yasushi MORI² (1.Grad School Sci. & Tech., Kumamoto Univ., 2.Kitakyushu Museum of Natural and Human History)

12:15 PM - 12:30 PM

[SVC54-11] Forming process of Minamidake stratovolcano, Sakurajima, inferred from paleomagnetic age and volume of lava flows

*Daisuke MIKI¹ (1.DPRI, yoto University)