現在地
FactSheet: FS2021-E-0002
Title:
RECONNAISSANCE REPORT ON THE EARTHQUAKE IN OSAKA-FU HOKUBU ON JUNE 18, 2018
Authour:
Junji KIYONO1, Yoshikazu TAKAHASHI2, Tetsuo TOBITA3, Yasuko KUWATA4, Hiroyuki GOTO5 and Yoshihiro OKUMURA6
1Member of JSCE, Professor, Dept. of Urban Management, Grad. School of Eng., Kyoto University
2Member of JSCE, Professor, Dept. of Civil and Earth Resources Eng., Grad. School of Eng., Kyoto University
3Member of JSCE, Professor, Dept. of Environmental and Urb. Eng., Grad. School of Sci. and Eng., Kansai University
4Member of JSCE, Assoc. Professor, Dept. of Civil Eng., Grad. School of Eng., Kobe University
5Member of JSCE, Assoc. Professor, Research Division of Earthquake Disaster, Disaster Prevention Research Institute, Kyoto University
6Member of JSCE, Assoc. Professor, Dept. of Safety Management., Grad. School of Societal Safety Science, Kansai University
Key Facts
・Hazard Type: Earthquake
・Date of the disaster: 18 June 2018
・Location of the survey: Takatsuki City, Ibaraki City, Suita City, Osaka City
・Date of the field survey: June 2018
・Survey tools: Digital camera, GPS, Laser Rangefinder, Tape measure
Key findings:
1) Strong shaking of JMA seismic intensity 6− was observed, however, there was not destructive damage to buildings and infrastructures.
2) Pulse-like ground motions were recorded near the source fault, Takatsuki and Ibaraki cities.
3) Damage due to liquefaction was minor as observed in both the field investigation and numerical analysis with the recorded motion.
4) This earthquake was a moderate earthquake, but the supply of water and gas was stopped over a wide range.
5) Osaka monorail required time to completely recover because of failure of the monorail switches to move the complicated monorail lines.
6) Three people were killed by falling furniture or objects, and two people by collapse of block walls.
Key Words: earthquake in Osaka–fu Hokubu on 18 June 2018, reconnaissance report, earthquake ground motion, source effect, lifeline damage, civil life