FactSheet: FS2015-E-0001

Title:
Preliminary report on strong motion estimation at damaged and non-damaged clusters in Kamishiro District, Hakuba Village during a large earthquake (MJMA=6.7) in northern Nagano Prefecture, central Japan

Authour:
Yoshiya HATA¹, Akira MURATA², Masakatsu MIYAJIMA³

1 Member of JSCE, Assistant Professor, Graduate School of Eng., Osaka University, Japan hata@civil.eng.osaka-u.ac.jp
2 Member of JSCE, Assistant Professor, Faculty of Civil and Environmental Eng., Kanazawa University, Kanazawa, Japan
3 Member of JSCE, Professor, Faculty of Civil and Environmental Eng., Kanazawa University, Kanazawa, Japan

Key Facts
・Hazard Type: Earthquake
・Date of the disaster: November 22, 2014
・Location of the survey: Kamishiro District, Hakuba Village, Nagano Prefecture, Japan
・Date of the field survey: November 24, December 12-14 & 26-28, 2014
・Survey tools: seismographs, digital cameras and so on

Key findings:
[1] In-situ investigations were carried out at damage and non-damage cluster sites.
[2] Strong ground motions were estimated based on the site-effect substitution method.
[3] Site-specific nature of ground motions was one of main causes of the collapsed houses.

Key Words:
seimic waveform, aftershock observation, site effect, wooden house

Paper: PDF 2259KB