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Nov 16, 2022

Damage to Drinking Water Supply System in the 2018 Hokkaido Iburi-Tobu Earthquake

ABSTRACT

This paper focuses on the damage to drinking water supply system in the 2018 Hokkaido Iburi-tobu earthquake. An earthquake of about 35 km in depth and magnitude MJMA=6.7 occurred at east of Iburi region in Hokkaido, Japan, at 3:07 local time on September 6th, 2018. Maximum seismic intensity of 7 was observed at Atsuma Town. The drinking water supply system in the stricken areas was severely damaged. Water service disruption occurred at about 68,000 households in 43 waterworks bureaus just after the earthquake. Water service disruption continued for more than one month at Atsuma Town. Tomisato purification plant and service reservoir of Atsuma Town suffered severe damage by a large-scale landslide. This paper introduces an outline of the earthquake and the damage induced by the earthquake, especially, damage to the drinking water supply system. Furthermore, lessons learned from the damage by this earthquake are discussed.

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REFERENCES

Cabinet Office. (2018). About the damage situation to affect the 2018 Hokkaido Iburi-tobu Earthquake, Japan, http://www.bousai.go.jp/updates/h30jishin_hokkaido/pdf/310128_jishin_hokkaido.pdf (last visit: 30 July 2019) Geographical Survey Institute (2018), https://saigai.gsi.go.jp/1/H30_09quake/0906atsumagawa/photo/qv/0072.jpg (last visit: 30 July 2019).
Geographical Survey Institute. (2018). https://saigai.gsi.go.jp/1/H30_09quake/0906atsumagawa/photo/qv/0072.jpg (last visit: 30 July 2019).
Japan Meteorological Agency. (2018). About the “the 2018 Hokkaido Iburi-tobu Earthquake, Japan (vol. 6)”, https://www.jma.go.jp/jma/press/1809/07c/kaisetsu201809071600.pdf (last visit: 30 July 2019).
Maruhironozawa Co., Ltd. (2018). http://www.maruhiro-nozawagumi.com/sekou.html (last visit: 30 Dec. 2018).
National Research Institute for Earth Science and Disaster Prevention. (2018). the 2018 Hokkaido Iburi-tobu Earthquake, Japan, http://www.kyoshin.bosai.go.jp/kyoshin/topics/html20180906030750/main_20180906030750.html (last visit: 30 July. 2019).

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Go to Lifelines 2022
Lifelines 2022
Pages: 322 - 329

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Published online: Nov 16, 2022

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M. Miyajima, Dr.Eng. [email protected]
1Dept. of Geosciences and Civil Engineering, Kanazawa Univ., Kanazawa, Ishikawa, Japan. Email: [email protected]

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