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  1. 学術雑誌掲載済論文
  2. 洋雑誌

A novel method of surveying submerged landslide ruins: Case study of the Nebukawa landslide in Japan

https://kitami-it.repo.nii.ac.jp/records/7736
https://kitami-it.repo.nii.ac.jp/records/7736
8eeb6b32-9691-403d-9d12-c6963b032124
名前 / ファイル ライセンス アクション
リポジトリ山崎・釜井.pdf リポジトリ山崎・釜井.pdf (4.9 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2015-05-14
タイトル
言語 en
タイトル A novel method of surveying submerged landslide ruins: Case study of the Nebukawa landslide in Japan
言語
言語 eng
キーワード
主題Scheme Other
主題 Acoustic survey
キーワード
主題Scheme Other
主題 Coefficient of frictions
キーワード
主題Scheme Other
主題 Fish finders
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
著者 Yamasaki, Shintaro

× Yamasaki, Shintaro

WEKO 39712

en Yamasaki, Shintaro

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Kamai, Toshitaka

× Kamai, Toshitaka

WEKO 39713

en Kamai, Toshitaka

Search repository
著者別名
姓名 山崎, 新太郎
言語 ja
抄録
内容記述タイプ Abstract
内容記述 We investigated submerged ruins from the 1923 Nebukawa landslide, which was caused by the 1923 Kanto earthquake. The on-land areas affected by the landslide have been restored and evidence of the landslide is mostly gone, but huge structures that appear to be man-made have been observed by divers on the seafloor near the area of the landslide. We used a fish finder designed for leisure use and other low-cost equipment to conduct a marine acoustic survey. Because the affected area off Nebukawa is close to shore and shallow and the tools were sufficiently lightweight, we were able to use an inflatable raft for the survey. We created a bathymetric map and side-scan images showing features of the landslide mass and scattered huge structures exposed on the seafloor. After the acoustic investigations, we conducted a diving investigation and were able to ascertain that the structures were made of concrete and were most likely parts of the old Nebukawa station. The ruins were displaced about 260 to 320. m horizontally from the original station location (to 110-170. m offshore) and were mixed with coarse rock fragments from the landslide mass. The distribution of bottom materials suggests that the landslide struck the seafloor and then traveled as far as 460. m offshore from the coastline. The landslide had an equivalent coefficient of friction (H/L) of about 0.15, indicating high mobility. The landslide probably transformed into a turbulent flow mixed with basal sandy sediments, which propelled the debris farther offshore
書誌情報 Engineering Geology

巻 186, p. 28-33, 発行日 2015-02
DOI
識別子タイプ DOI
関連識別子 http://doi.org/10.1016/j.enggeo.2014.11.010
出版者
出版者 Elsevier
著者版フラグ
値 author
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
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