16 17 17 9 14 11 18 3

18 3 31

31 21 32 50 ( 160km) 130 42 131 53 ( 70km) 116 6 ( 0.92%) 7,735km 2 ( 2.05%) ( 14(2002)10 1 ) 14 76 80km 10 400km 4(1871)7 6 11 3 5(1872)9 14 6(1873)1 2 9(1876)8 16(1883)5 15 71 1

2

3 1000 1700 ( 1700.06) 20 ( ) ( ) 2.22.5

4 1.5 ( 1.1) ( 1.2) 2 ( 1.3) ( 1.4) ( )

5

6

7

8

1.2 1.6 1.2 77.8% 9

( ) 2.1 10

2.2 (1967) (1997,2003) 2.2 ( ) 11

12

( ) 90150 (684) (887) (1099) (1361) (1605) (1707) (1854) 21(1946) 8 2.3 (1854) 13

(1997) (1854.12.23) (M8.4) (24 ) (M8.4) 70,000 3000 ( ) 7 2 3 3 (,1997) 5 14

M7.07.6 43(1968) (M7.5) (Yagi and Kikuchi,2003, Shiono et al.,1980,,1974) (1662) 200 3800 (,1997) (1769) 36(1961) 15

( 132.0 31.7 ) M7.6 200 3800 (,1997) 7 35 (32km) (,1993) 13 500 16

27 (1689) (,2003) 2.7 2.6 2.7 17

(,1635-1703) (1675.10.20-11.12 ) (,1980) 13 (,2003) (,1815-1890) 7 35 8500 2350 1213 246 2398 15 5 9 192 2 ( ) (,1980) 7 8 3 4 3 4 (0.91.2) (,1980) 18

20 (1524) (1588) (1716) ( ) 36(1961) 41(1966) 43(1968) 50(1975) 43 15km (M6.1) 19

0 11 17 2 11 6 21 6 3 25 5 5 21 10km 40 ( ) 328 75ha 3 44 6642 (,1980) 44 (,1997) 20

21

22 ( ) ( ) ( ) ( ) ( ) ( )

23 ( 3.1) ( ) ( 3.2) ()

24 ( 3.3) ( ) 3.3

25 ( ) 3.2( ) 14 C (K-Ah 6300 ) ( ) 3.3

26

(742) ( ) ( ) AD A B C D 1550 27

(788) 20km 60cm (788 4 18 ) (788) (1235) 3.1 16 17 19 20 15(2003)12 12 28

29

34(1959) (1716-1717) (3.2 ) 6 30

31

(1768) 1618 (1716-1717) (1112) (1167) ( ) ( ) 6300 46(1971)8 5 8 3 5 19 1100mm 400m 20m 32

8(1996) 7 ( ) ( ) 3(1991) 4(1992) 33

34 3.10

35

2000mm 1718mm(19712 000 ) 3000mm 4804mm 4831mm 6 7 1650mm 20(1945) ( 76 ) 25(1950) (9 ) 26(1951) (48 ) 29(1954) 12 (67 ) 67 36

37

38

39 ( )

(1716) (1717) ) (1721) 17 18 7 (,2000b) 40

42(1909)7 29 537mm 31 8 1 493mm (,1967) 436mm 410mm 9 61 7 1400 377mm (,1967) (,1967) (,1967) (,1999) 5 (,1998) 41

14(1939)10 16 6 110km 960hPa 657mm 18 21 452mm ( 430mm,1967) 417mm 53 13 253 415 90 2751 46 76 ( 300mm,1967) (,1967) 13(1938)10 1415 13 113 (,1981) 14(1939) 10 15 16 1516 657mm 100mm ( ) 32 100 (100ha) (,1967) 18(1943) 22(1947) 42

29(1954)9 5 9 13 15 956hPa (,1967) 51 13 350 264 683 5906 8228 311 148 () 824 911 13,700 (1 3700ha) (,1967) 978mm 913mm 851mm 713mm 600mm (,1967) 43

100 44

40 (1965) 6 29 7 7 600700mm( 1152mm) 400600mm 200400mm 300mm (,1967) 7 3 22 10 2 ( ) 4 99 2.5 3 80a (,1967) 47(1972)7 3 6 ( ) 500mm 600mm (,1994) 7 6 8 ( 500600 ) (,1994) 6 14 15 5 350 280 30 3 1.5km 28 29 4 (,1994) 40(1965) ( ) (,2003) 8 ( ) ( ) ( 4.10) 30 (,2003) 45

47 40 (,1985) (,1985) 46

57(1982)8 6 11 1213 13 (,1989) 7 3 39 50 276 171 8500 (,1983) 529mm 200mm (,1989) 150 200 100 3 219 1 3 (,1983) 47

8 1 17 40 108 30 2 2 1 246mm 50mm (,1994) 8 2 7 31 29 3 1 138mm 62mm (,1994) 5(1993)7 31 8 2 9 22 20 2284 312 9 (,1994) 10 4 28 24 1 276mm 59mm (,1994) 5(1993)8 9 10 7 16 30 132 1447 330 4 48

5(1993)8 31 13 9 2 3 16 23 4 01 48 396 336 1448 3770 145 385 32,560 499 451 2 (24 )576mm, SE57.9/s E46.7/s 1 (,2000) (,2004) 49

16 29( 26.7) 10(2.6) 19 (10.8) 23 82 8 10 16 18 23 21 64 2 87 50

16(2004)8 19 21 16 23 30 09 2 9 68 239 821mm 756mm 543mm 527mm 526mm 446mm ( ) 8 30 1 51

16(2004)8 28 09 18 9 5 7 09 14 9 22 2 905mm 573mm 549mm 537mm 502mm ( ) 8 16 3 52

16(2004)10 13 23 18 09 19 20 13 2 6 15 1028 ( ) 469mm 443mm 439mm 426mm ( ) 23 23 10 30 20 1 ( 220 ) ( 300 ) 350 2060 200 ( 4km) 2km 17 (2005) 14 (61 ) 53

17(2005)82921 14 95 6 14 35m/s 15m/s 750km 700km 20 1 1020km 3 1000mm 1000 3 4 4 194mm223mm 522 6 401 624 1321mm 54

17 22 6 1 18 7 5 0 8 1 4 0 7 5 0 3 3 4 2 2 2 3 1 0 3 0 3 0 2 0 2 1 0 0 2 0 2 0 1 0 1 0 0 0 0 0 1 49 73 6 0 0 0 3 0 2 1 0 1 0 0 0 1 0 1 0 0 0 0 1 1 0 17 34 19 12 8 8 7 7 7 6 5 4 3 3 3 2 2 2 2 1 1 1 1 1 139 17 14 49 73 7 2 0 0 1 1 16 20 4 5 5 21 17 2 0 0 1 0 1 139 11 0 2 37 9 27 55

1 1 1 4 1 56

8 3 3 1 57

3 7 2 500 320 350 m 3 58

670 m 3 59

60

1 JR 15m 30m 2 1 61

62

( ) 2030 50 63

6 28 11 2044mm 6 29 512mm (,1983) 6 30 30 10 4 3 (2830 ) 362mm (,1980) 64

( ) 76% (1662) 36(1961)11 54(1979)3 (1825) 145 (2527) (,1967) 16 10 23 ( ) ( 220 ) 200 65

2000mm 47(1972) 7 6.2 29(1954)11 3 (,2000) 66

3,239 8,314 273 67

68

69

70

),10,69-77. (1999) (1974),, 2, 1,27, 141-154. (1985), (1997),210p.,37,6, 4-10. Aramaki Shigeo(1984):Formation of the Aira Caldera,Southern (1988) Kyushu,Geophysical Research,89,B10,8485-8501,(American,,41,4,26-28. Geophysical Union). (1998)1993 (1971),,,26,147-155.,50,5,34-42. (2002),,520p. (1980) (2004),,16p., (1991) 300,17,335-336(,,2,135-148. ). (2001),,p8. (1991) (2004),,,17,,294p.,161-170. (1994),() (1968),,772p.,19,6,47-59. (1997) [ ], (1975),CDROM., (2003),,605p. ( ),7,1-14. (2003) (1998), 329p.,,205p. (1980) (1999), ( ),,Vol.18,No.13-9. ( ),92-102. (1990) (1972)47 7,,9,10,95-100(,209-212. ). 1985 (1971) 267pp., (1984),640p,26,157-189. (1998), (1929),,1620p.,412p. (1971), ( (1991),4 ),4,6,129-144.,,437p. (1971),12 (1989), 5,,1-11.,553p. (1975),12 1035,.,143-144. (1998) 4, (1975),,68p.,23,2,221-228. (1951) (1992)1662 ( ),,,57p.,,13,102-107( (2003) ).,143p. (1993)1662 ( 2 ),,J.JSNDS 12-1,1-10. (2004),30p. (1997) (2001),,,281-290.,17,80-888p. (1998)1972 1997 (2003) 15,,.,9,31-38. Shiono, K., T. Mikumo and Y. Ishikawa(1980)Tectonics of the (1998) 1972 Kyushu-Ryukyu arc as evidenced from seismicity and focal, 10 mechanism of shallow to inter-mediate-depth earthquakes, Journal of,15-27. Physics of the Earth,28, 17-43. (2000), 2000,No.24,73-76.,80-87. (2002), 13 2004, 15.,21-31. (2006)Hi-net 14 (2002) 1968., 13 (1965),247-251p.,32-35. (1997)(2003),,() 15,1-10.,395p. (1986) (1992),1,,,,,2,55-59( (1),22,197-202. ). (1994) ( 220 ), (1993),30,4,41-45.,,15,1-7( (1980) )., ( (2003),164p 71

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