PREDICTION OF STRONG MOTION AND DIFFICULT TIME FOR TSUNAMI EVACUATION WITH HIGH DENSITY IN HIROKAWA TOWN, WAKAYAMA PREFECTURE, JAPAN, DURING A SCENARIO EARTHQUAKE WITH <i>M</i>_W9.0 ALONG THE NANKAI TROUGH BASED ON THE SMGA MODELS CONSIDERING LOCAL SITE EFFECTS

• MINATO Fumihiro

  大阪大学 大学院工学研究科

• HATA Yoshiya

  大阪大学 大学院工学研究科

• TOKIDA Ken-ichi

  大阪大学 大学院工学研究科

• KUWATA Yasuko

  神戸大学 大学院工学研究科

• KOYAMA Maki

  岐阜大学 流域圏科学研究センター

• UEDA Yuya

  大阪大学 大学院工学研究科

Bibliographic Information

Other Title

• 高密度常時微動計測・臨時地震観測に基づく南海トラフ巨大地震における和歌山県広川町での津波避難不可能時間算出のための強震動評価

Abstract

 During a scenario earthquake with M_W9.0 along the Nankai Trough, not only strong motion but also huge tsunami is predicted in Hirokawa Town, Wakayama Prefecture, Japan. In this study, first, based on the empirical relationship between microtremor H/V spectrum and site amplification factor, the site amplification factors from seismic bedrock to ground surface at the 476 sites in the tsunami attack area were evaluated. Seismic waveforms in the area were then predicted with very high density based on the SMGA models considering the empirical site amplification factors. Using the detailed distribution of JMA seismic intensity and difficult time for tsunami evacuation due to the predicted seismic waveforms, finally, we discussed the influence which the action of the strong motion has on evacuation.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))

  Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE)) 72 (4), I_68-I_81, 2016

  Japan Society of Civil Engineers

Keywords

• seismic observation
• microtremor measurement
• site amplification factor
• H/V spectrum
• strong motion prediction
• tsunami evacuation

Details

• CRID: 1390001205349094272
• NII Article ID: 130005152742
• DOI: 10.2208/jscejseee.72.i_68
• ISSN: 21854653
• Web Site: https://www.jstage.jst.go.jp/article/jscejseee/72/4/72_I_68/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed