24 1809 2. 2 2-2 1. 2 2-2 5 21 GPS 20 22 GPS 23 GPS MT 19 24
GPS 25 20 24 2006 6 24 23 ( 10Pa ) 2008 2 2009 2009 12 2010 3 2011 2 2012 1 2013 1 4 1 ( ) ( 1) 6km GPS ( 2) Cl/S SO 2 CO 2 SiO 2 ( 1004 ) 1 m 3 / 1995 GPS 1998 1999 2009 2010 2011 8 2012 2 2000 2009 400 m 3 / 2009 2009 H 2 CO 2 2010 ( 1004 ) Cl/S ( 3) SO 2 2011 12 ( 4) SO 2 2012 7 24 2 1970 1990 5000m 30 21 ( 5) 10 5 m 3
10 4 m 3 1 2010 MT 3 ( 6) 3-5km 2008 2010 ( 7) 2009 2011 2007 2007 2011 DEM ( 8) 24 24 Alanis, P., H. Miyamachi, H. Yakiwara, K. Goto, R. Kobayashi, T. Tameguri, and M. Iguchi, 2012, Seismic velocity structure of the crust beneath the Aira caldera in southern Kyushu by tomography of travel times of local earthquake data, Bull. Volcanol. Soc. Japan, 57, 227-234. 2012 55B, 169-175. 2012 2011 7 2012 6 23,1-6 2012 (2011 2012 ) 23 87-90 2012 GPS 2010 2011 23 47-53 Iguchi, M., 2013, Magma movement from the deep to shallow Sakurajima volcano as revealed by geophysical observations, Bull. Volcanol. Soc. Japan, 58 (in press). Iguchi, M., T. Tameguri, Y. Ohta, S. Ueki, and S. Nakao, 2013, Characteristics of volcanic activity at Sakurajima volcano s Showa crater during the period 2006 to 2011 Bull. Volcanol. Soc. Japan, 58 (in press). Nurnaning Aisyah Aditya Sebastian Andreas 2012 AMT 2011 23 71-78 Kanda, W., et al., 2013, Shallow resistivity structure of Sakurajima volcano revealed by audio-frequency magnetotellurics, Bull. Volcanol. Soc. Japan, 58 (in press). 2012-2006 6 2012 4-23 109-118 Matsumoto, A., M. Nakagawa, M. Miyasaka and M. Iguchi, 2013, Temporal variations of the petrological features of the juvenile materials since 2006 from Showa crater, Sakurajima volcano, Kyushu, Japan, Bull. Volcanol. Soc. Japan, 58 (in press). Miyamachi, H. et al., 2013, Shallow velocity structure beneath the Aira caldera and Sakurajima volcano as inferred from refraction analysis of the seismic experiment in 2008, Bull. Volcanol. Soc. Japan, 58 (in
press). Nguyen HOANG, 2012, 55B, 177-181. 2012 HCl/SO2 (2) 23 91-99 2012? 2009 2012? 23 105-107 2012 (3) 23 65-70 Okubo, S. et al., 2013, Absolute gravity variation at Sakurajima volcano from April 2009 through January 2011 and its relevance to the eruptive activity of Showa crater, Bull. Volcanol. Soc. Japan, 58 (in press). 2012 23 101-104 2012 (2011 2012 ) 23 7-11 2012 (2011 ) 23 25-38 Tsutsui, T. et al., 2013, Structure of northeastern Sakurajima, south Kyushu, Japan, revealed by seismic reflection survey, Bull. Volcanol. Soc. Japan, 58 (in press). 2012 GPS 23 55-58 2012 (2007-2011 ) 23 79-86 2012, (2010 11 2011 11 ) 55B, 155-161. 2012 (2010 11 2011 11 23 39-45 2012 (2011 10 23 59-64 Yamamoto, K. et al., 2013, Vertical ground deformation associated with the volcanic activity of Sakurajima volcano, Japan during 1996-2010 as revealed by repeated precise leveling surveys, Bull. Volcanol. Soc. Japan, 58 (in press). 2012 23 13-23
25 20 10 11 099-293-2058 e-mail iguchi@svo.dpri.kyoto-u.ac.jp URL http://www.dpri.kyoto-u.ac.jp/ kazan/default.html 12
1 ( 3.1km) A
2 GPS ( ) strike N80 5km dip 90
3 Cl/S 2009 2009 Cl/S 2010 Cl/S Cl/S open conduit SO 2 ( 4) Cl/S
4 HCl/SO[sub]2[/sub] 2011 3000ton/day HCl/SO 2 2009 0.1 0.15 HCl/ 2 2012 0.3
5 2012 7 24 21 ( 3.1km)
6 MT 2010 2 6 6 MT 3 3 (Siripunvaraporn and Egbert, 2009) 10 8 m 1000 m 10 5 RMS 1.49 3 5km
7 B H, h 2011 4 4km 2008 2009 2010 1 7 5a 5d 5a, 5b, 5d 2009 1, 3, 5c
8 2011-2007 (a) 2011 (b) (c)2007 (d) (e)2007