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Yuki Sakai homepage


Original Text:
発生した地震動の性質－2011年東北地方太平洋沖地震
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3 / 15 '11
Northeastern Pacific Ocean off the coast earthquake ground motion that occurred in nature -2011 years
As for intensity of 6 or more, K is published NIED-KiK wave ground motion and the maximum acceleration by NET-net, the following maximum speed and the ground motion intensity measure.Measurement PGA PGV name Observation seismic IWT007 (Kamaishi) 741.6 31.1 5.74 Iwt012 (north) 610.2 50.1 5.93 Iwth02 (Jade) 709.0 19.7 5.57 Iwth05 (Fujisawa) 766.9 33.8 5.63 Iwth20 (South Hanamaki) 407.4 38.0 5.61 Myg002 (歌津) 770.8 26.2 5.68 Myg003 (Towa) 868.6 33.5 5.55 Myg004 (築館) 2,765.2 105.8 6.67 Myg007 (Toyosato) 689.3 38.4 5.81 Myg008 (north) 42.6 398.2 5.58 Myg010 (Ishinomaki) 481.9 65.8 5.93 Myg011 (stag) 929.3 37.8 5.63 Myg012 (Shiogama) 1,970.3 63.7 6.02 Myg013 ( Sendai) 82.5 6.38 1807.4 Myg015 (Iwanuma) 429.0 79.0 5.99 Myg017 (Tsunoda) 355.3 52.6 5.83 Mygh09 (Shiraishi) 341.9 36.5 5.55 Mygh10 (Yamamoto) 1,025.6 62.4 6.07 Fks001 (soma) 659.9 58.9 5.85 Fks019 (Nihonmatsu) 458.8 29.5 5.57 Fks023 (Aizu Wakamatsu) 451.5 41.7 5.86 Fksh10 (Saigo) 36.8 6.00 1075.8 Fksh11 (Yabuki) 503.4 55.0 5.82 Fksh12 (Hirata) 434.7 34.6 5.65 Fksh18 (Miharu) 614.8 43.0 6.01 Fksh19 (都路) 857.1 61.5 5.99 Ibr001 (Daigo) 454.0 34.5 5.59 Ibr002 (Takahagi) 619.1 52.1 5.98 Ibr003 (Hitachi) 1,844.3 70.9 6.46 Ibr006 (Mito) 5.80 38.8 843.6 Ibr007 (那珂湊) 550.3 50.1 5.88 Ibr010 (Shimotsuma) 430.4 39.2 5.57 Ibr011 (Tsukuba) 46.2 370.6 5.61 Ibr012 (Ishioka) 358.7 43.4 5.55 Ibr013 (鉾田) 69.9 6.41 1613.8 Ibr014 (Tsuchiura) 527.0 44.6 5.63 Ibrh11 (Iwase) 951.1 63.6 6.24 Ibrh12 (Daigo) 683.9 33.8 5.77 Ibrh13 (Takahagi) 561.5 34.8 5.72 Ibrh15 (御前山) 988.2 36.4 5.74 Ibrh16 (Yamagata) 661.5 29.2 5.68 Tcg001 (Kuroiso) 485.2 38.4 5.52 Tcg006 (Ogawa) 421.1 75.3 5.97 Tcg013 (Moka) 430.7 38.9 5.74 Tcg014 (Motegi) 1,275.7 65.6 6.34 Tcgh10 (Otawara) 672.8 44.5 5.71 Tcgh12 (Ujiie) 481.5 42.9 5.59 Tcgh13 (Horsehead) 906.2 64.6 6.14 Tcgh16 ( Haga) 1221.7 81.9 6.50 Gnm009 (Kiryu) 410.4 30.7 5.53 Chb003 (Shirai) 485.9 30.8 5.60 ※ PGA: PGA ground motion (cm / s two ), PGV: maximum speed ground motion (cm / s), the vector sum of two horizontal directions either Figure K-NET · KiK-net position acceleration waveforms (up to 0.1-way directional vector sum of horizontal banding pulse filter 10Hz) shown. IWT007 (Kamaishi) Iwt012 (north) Iwth02 (Jade) Iwth05 (Fujisawa) Iwth20 (South Hanamaki) Myg002 (歌津) Myg003 (Towa) Myg004 (築館) Myg007 (Toyosato) Myg008 (north) Myg010 (Ishinomaki) Myg011 (stag) Myg012 (Shiogama) Myg013 (Sendai) Myg015 (Iwanuma) Myg017 (Tsunoda) Mygh09 (Shiraishi) Mygh10 (Yamamoto) Fks001 (Soma) Fks019 (Nihonmatsu) Fks023 (Wakamatsu) Fksh10 (Saigo) Fksh11 (Yabuki) Fksh12 (Hirata) Fksh18 ( Miharu) Fksh19 (都路) Ibr001 (Daigo) Ibr002 (Takahagi) Ibr003 (Hitachi) Ibr006 (Mito) Ibr007 (那珂湊) Ibr010 (Shimotsuma) Ibr011 (Tsukuba) Ibr012 (Ishioka) Ibr013 (鉾田) Ibr014 (Tsuchiura) Ibrh11 ( Iwase) Ibrh12 (Daigo) Ibrh13 (Takahagi) Ibrh15 (御前山) Ibrh16 (Yamagata) Tcg001 (Kuroiso) Tcg006 (Ogawa) Tcg013 (Moka) Tcg014 (Motegi) Tcgh10 (Otawara) Tcgh12 (Ujiie) Tcgh13 (Horsehead) Tcgh16 ( Haga) Gnm009 (Kiryu) Chb003 (Shirai)
In addition, the elastic acceleration response spectra (5% damping constant, the vector sum of two horizontal directions) shows.Iwate Miyagi (1) Miyagi (1) Miyagi (3) Fukushima (1) Fukushima (2), Ibaraki Prefecture (1) in Ibaraki Prefecture (2) Ibaraki (3), Tochigi (1), Tochigi ( 2) Chiba, Gunma
If you are dominated by short-period strong motion records much less than one second, two seconds response large enough lead to significant damage hazard of the building.
Shown below in comparison with strong motion records of the past. 1-2 and 1-2 show a second response of the building leading to devastating large-K 2-second response is about half of the JR Takatori 1995 Kobe earthquake in Ishinomaki NET, K-7 intensity 築館 NET, K, Sendai intensity 6 upper-NET, K-NET, Hitachi, much smaller.
Intensity calculation method proposed is shown below. The proposed calculation method intensity-0.1 to 1 second (= intensity measured body sensation, movement of goods corresponding to the interior), 0.5-second (corresponding to the damage of small buildings), 1 - 2 seconds (great damage of the building support) of the common indicators that can be seen in the intensity of seismic ground motion of each period of three bands.S proposal 0.5-1 0.1-1 1-2 seconds seconds measurement stations seismic intensity intensity intensity intensity IWT007 (Kamaishi) 5.64 5.74 5.03 4.55 5.03 Iwt012 (north) 5.93 5.93 5.55 5.33 5.55 Iwth02 (Jade) 5.04 5.57 4.17 3.94 4.97 Iwth05 ( Fujisawa) 5.66 5.63 5.03 4.71 5.03 Iwth20 (South Hanamaki) 5.65 5.61 5.21 5.46 5.21 Myg002 (歌津) 5.48 5.68 4.73 4.44 4.75 Myg003 (Towa) 5.34 5.55 4.60 4.63 4.83 Myg004 (築館) 6.40 6.67 5.59 5.58 5.59 Myg007 (Toyosato) 5.80 5.81 5.35 5.43 5.43 Myg008 (north) 5.48 5.58 5.08 5.25 5.09 Myg010 (Ishinomaki) 5.65 5.93 5.25 6.20 6.20 Myg011 (stag) 5.55 5.63 5.02 5.15 5.02 Myg012 (Shiogama) 6.00 6.02 5.41 5.28 5.41 Myg013 (Sendai) 6.36 6.38 6.13 5.89 5.94 Myg015 ( Iwanuma) 5.96 5.99 5.62 5.80 5.73 Myg017 (Tsunoda) 5.72 5.83 5.47 5.80 5.67 Mygh09 (Shiraishi) 5.58 5.55 5.25 5.20 5.25 Mygh10 (Yamamoto) 6.09 6.07 5.56 5.21 5.56 Fks001 (Soma) 6.04 5.85 5.74 5.42 5.74 Fks019 (Nihonmatsu) 5.45 5.57 4.73 4.80 4.29 Fks023 (Wakamatsu) 5.96 5.86 5.62 5.15 5.62 Fksh10 (Saigo) 5.77 6.00 4.96 4.90 4.96 Fksh11 (Yabuki) 5.93 5.82 5.68 5.49 5.68 Fksh12 (Hirata) 5.64 5.65 5.01 4.58 5.01 Fksh18 (Miharu) 5.89 6.01 5.36 4.78 5.36 Fksh19 (都路) 6.01 5.99 5.51 5.25 5.51 Ibr001 (Daigo) 5.69 5.59 5.21 4.92 5.21 Ibr002 (Takahagi) 6.01 5.98 5.63 5.69 5.66 Ibr003 (Hitachi) 6.29 6.46 5.47 5.19 5.47 Ibr006 (Mito) 5.73 5.80 5.23 5.13 5.23 Ibr007 (那珂湊) 5.88 5.54 5.94 5.11 5.54 Ibr010 (Shimotsuma) 5.69 5.57 5.29 4.87 5.29 Ibr011 (Tsukuba) 5.51 5.61 5.11 5.47 5.11 Ibr012 (Ishioka) 5.59 5.55 5.29 5.39 5.29 Ibr013 (鉾田) 6.36 6.41 5.81 5.34 5.81 Ibr014 (Tsuchiura) 5.59 5.63 5.16 5.30 5.16 Ibrh11 (Iwase) 6.29 6.24 5.95 5.21 5.95 Ibrh12 (Daigo) 5.59 5.77 4.78 4.59 4.78 Ibrh13 (Takahagi) 5.73 5.72 5.17 4.81 5.17 Ibrh15 (御前山) 5.53 5.74 4.69 4.45 4.69 Ibrh16 (Yamagata) 5.70 5.68 5.06 4.73 5.06 Tcg001 (Kuroiso) 5.49 5.52 4.99 5.34 5.00 Tcg006 (Ogawa) 5.72 5.97 5.40 6.20 6.20 Tcg013 (Moka) 5.86 5.74 5.54 5.07 5.54 Tcg014 (Motegi) 6.26 6.34 5.62 5.32 5.62 Tcgh10 (Otawara) 5.57 5.71 4.93 5.36 4.93 Tcgh12 (Ujiie) 5.57 5.59 5.14 5.27 5.14 TCGH13 (Horsehead) 6.20 6.14 5.72 5.08 5.72 Tcgh16 (Haga) 6.56 6.50 6.10 5.65 5.97 Gnm009 (Kiryu) 5.64 5.53 5.33 4.53 5.33 Chb003 (Shirai) 5.64 5.60 5.11 4.82 5.11
Looking at the intensity Ishinomaki 1-2 seconds and the great damage of the building are highly correlated, equivalent to over 6 in two brooks, which is equivalent to only 6 points less than six others. In contrast, depth and intensity measurement is high 0.1-1 seconds, body sensation, damage is expected to be large interior goods.Top page (since 12:03 6/3/2003)