Annuals of Disas. Prev. Res. Inst., Kyoto Univ., No. 47 B, 2004 20039101114 74.1m/s Miyako Island Kyushu 200391011 14Fig1 Japan path of Typhoon 74.1m/s7 Okinawa 3:00, Sep. 11 N 912hPa4 Taiwan Fig. 1 Location of Miyako Island and the path of 1 Typhoon 0314 91316,2003,2003,2003 21148 20031212
Fig.1,2 205km 2 20039 556,70021,900 23,800 115m 74.1m/s83m/s 87m/s 20042 2003Fig.3 2003 131.921NTT10 163 5.414.7 11.521.6 29.08.62.5 0.78.129.8 1789 971886 1,2061,3100.2% 5.5% 3875114 53627 28 611.45ha6ha 9114,926928 4,038 91121,400 7 3 Ikema N Island town 0 10km Irabu cho Miyako Island Shimoji Island Hirara shi Shimoji cho Gusukube cho Kurima Island Ueno son Fig. 2 Miyako Island N 54 town Okinawa denryoku 0 10km Miyakojima JASDF base 83 48 74 55 60 70 61 50 75 84 Miyakojima local 87 65 weather station unit in m/s Fig. 3 Map of measured and estimated maximum peak gust of wind speed quoted from Okuda et.al. (2003) Fig.4 Photo 1 Photo 2 Photo 3Photo 4
Fig. 4 Distribution of completely destroyed and badly damaged houses in Miyako Island Photo 1 Completely destroyed wooden house Photo 2 Badly damaged RC house ( courtesy Hirara city office ) Photo 3 Damage of openings (courtesy Okinawa Prefecture ) town completely destroyed houses badly damaged houses reinforced concrete Photo 4 Interior damage with window breaks (courtesy Okinawa Prefecture branch office ) Photo 5 Damage of gymnasium (courtesy Okinawa Prefecture branch office ) Photo 6 Damage of a sugar factory ( Okuda et. al., 2003 )
Photo 7 Roof tile damage of summer house Photo 9 Inclined AD tower (courtesy Okinawa prefecture branch office ) Photo 11 Fall of water tank (courtesy Hirara Tsutomu ) Photo 13 Damage of observation deck (courtesy Hirara city ) 2 Photo 5Photo 6 Photo 7 Photo 8 Roof damage of gas station (courtesy Kajimakensetu) Photo 10 Break of road signs (courtesy Hirara city ) Photo 12 Fall down of concrete block wall (courtesy Miyakojima local weather station ) Photo 14 Damage of vinyl houses (courtesy Nougyousikenjo Miyakosijo )
Photo 15 Damage of sugarcane field (courtesy Okinawa Prefecture branch office ) Photo 17 Bus which was blown over ( Okuda et.al. 2003 ) Photo 19 Boat on the road ( courtesy Miyako local weather station ) Photo 21 Nacelle cover was blown off ( courtesy Building Research Institute ) Photo 13 Photo 16 Broken trees (courtesy Miyakojima local weather station ) Photo 18 Car which struck by the broken pole (courtesy Miyakojima local weather station ) Photo 20 Broken blades of wind turbine ( Okuda et.al. 2003 ) Photo 22 Broken down tower ( Okuda et.al. 2003 ) Photo 14 Photo 15 Photo 16
400 400 400 600 (kw) NEG Micon NEG Micon NEG Micon Enercon 31 31 31 44 (m) 36 36 36 46 (m) 1995/12 1995/12 1995/12 2003/3 600 500 600 Vestas Enercon Vestas 47 40.3 42 33.7 44 35.3 2000/10 1998/8 1998/8 Fig. 5 Damage of wind turbines town damaged area Photo 23 Tower was bended down at maintenance hatch (courtesy Kajimakensetu) Fig. 6 Distribution of damaged electric poles [1] 7 3 Photo 24 Broken electric poles blocked traffic ( courtesy Okinawa Prefecture branch office ) Photo 17 Photo 18 Photo 19 Fig. 5 Photo 20Photo 21 Photo 22 Photo 23 2002162 250kW28m [2] 85 631132 166929Fig. 6
number max 21,363 houses on Sep.11,14:00 Table 1 Fig. 7 Time history of power cut date and time Time history of human damage, house damage and total amount of damage date human damage ( persons ) house damage total amount M/D dead badly injured completely badly partially injured destroyed damaged damaged ( million yen ) 9/12 1 1 92 2 4 9/14 1 1 93 2 4 9/16 1 1 82 10 20 25 9/19 1 1 83 12 41 58 9/24 1 1 83 12 45 81 9/29 1 1 95 16 54 151 98.2 10/15 1 1 96 16 54 212 121.2 12/12 1 7 89 18 86 1,206 162.9 Photo 24 2003 NTT1031 24,000 12,0002,000 21,000 211 Fig. 7 9 11 14 21,363 20 24 Table 916 1212 1 1 1
a. on November 6 b. on September 14 ( Okuda et.al. 2003 ) Photo 25 Comparison of internal damage of gymnasium a. on November 6 b. on September 11 ( courtesy Gusukube town ) Photo 26 Comparison of electric poles damage along the road in Gusukube town 11 8 Photo 27 Sugarcane field on November 7 Photo 25 9 28 9 23 Photo 26 Photo
Table 2 Comparison of wind speed, minimum atmospheric pressure and damage of houses (m/s) (m/s) (hpa) (1959.9) 53.0 64.8 908 2501 2702 2 (1966.9) 60.8 85.3 929 2768 4756 3 1968.9 54.3 79.8 942 907 2751 0314 2003.9 38.4 74.1 912 18 86,, 5 Table 3 Statistics of damaged houses in Hirarasi, Kusukubecho, Shimojicho and Uenoson () () 2 11,060 1,943 3,429 17.6 31.0 3 11,247 782 2,989 7.0 26.6 0314 18,356(682) 16(15) 73(55) 0.1 0.4 Table 4 Statistics of non-reinforced concrete houses () () () 1955 99.9 1960 78.8 1966 2 17.6 31.0 1968 3 7.0 26.6 2003 0314 3.7 2.6 8.1 1955 1960 2003 1966, 1968,, 27 15 2 3 1968 1970 Fig. 8 table 2 0314 3rd. Miyakojima Typhoon 3nd. Miyakojima Typhoon Miyako island Miyakojima Typhoon Typhoon 0314 Fig. 8 Passes of strong typhoons ever struck Miyako Island 4 3 2 table 3 2 3
Photo 28 A piece of slate stuck into wall ( courtesy Building Research Institute ) Photo 29 Window breaks at control tower of Miyakojima airport ( courtesy Okinawa Prefecture ) Photo 30 Roofing metal sheets twisted on electric pole ( courtesy Prefecture branch office ) Photo 31 Traditional wooden house without damage ( Okuda et.al. 2003 ) Roof tiles were fastened firmly with plaster or cement. table 4 2, 3 1955 1960 0314 table 4, 0314, 2.68.1 2, 3 1960 78.8 2, 3,table 4 Photo 28 22.4m Photo 29 70m/s.
Photo 32 RC house with shutter on the windows 3.5 Photo 33 Windows with and without louver ( courtesy Miyako educational office ) The window without louver was broken but was not damaged with louver. Photo 30 Photo 31 Photo 2 Photo IV 5 10 Photo 3, 4 Photo 32, 33 10 50m/s10m/s 70m/s
2003 9 14.....,,. 14350303 1968.32 11App.517-534. 1970.33 13App.449-461. 2003.10200314 97, pp.49-60. 2003.914. 2003.9 1514. 2003.1214. 152. 22003 2003 31955,,. 4 1960 1960 5 1965, Study on Typhoon 0314 which struck Miyako Island part 2 Investigation of Damage Takashi MARUYAMA, Hiromasa KAWAI, Yasuo OKUDA*, Taiichi HAYASHI * Building Research Institute, Japan Synopsis Typhoon 0314 struck Miyako Island, Japan, during September 10 and 11, 2004. The maximum peak gust of 74.1m/s has been recorded, which is the 7th strong wind ever recorded at weather stations in Japan. Significant damage occurred throughout the island. We had field investigations just after the attack of typhoon and about two months later. Various kind of damage, such as buildings, infrastructures and agricultural products were studied and some lessons were summarized. Keywords: Typhoon 0314, Miyako Island, damage, strong wind, field investigation