2009年8月11日に駿河湾で発生した地震による深層水取水管の被災とその要因
- 標題
- 2009年8月11日に駿河湾で発生した地震による深層水取水管の被災とその要因
- 作者
- 松本 浩幸, 馬場 俊孝, 柏瀬 憲彦, 金田 義行, 三須 敏郎, 堀 哲郎
- 文件屬性
- 日本研究
- 知識分類
- 基礎研究
- 出版年
- 2010
- 刊名
- 土木学会論文集B2(海岸工学)
- 卷
- 66
- 期
- 1
- 頁
- P 1341-1345
- 點閱數
- 2579
摘要
On 11 August, 2009, at 05:07 JST, a moderate-to-large earthquake struck two deep ocean water pipes, which reach 397 m and 687 m deep at Suruga Bay in the near-field. We carried out two surveys by using R/V Natsushima and ROV Hyper-Dolphin for better understanding of damage of the water pipes and its cause. The first survey was done by using ROV Hyper-Dolphin, which contained the visual surveys. We have realized that the 687 m water pipe has been flowed at least 2 km away from the original laid position. The second survey using R/V Natsushima was done in order to reproduce the bathymetry map in the source area. We could discover an erosion pattern created near the 687 m water pipe, whereas a sediment pattern in the downstream, which is possibly a submarine landslide evidence caused by the earthquake.