津波で発生した海底がれきの分布特性

• 横山 勝英

  首都大学東京

• 新谷 哲也

  首都大学東京

• 畠山 信

  NPO法人森は海の恋人

• 大貫 勇太

  東京都

書誌事項

タイトル別名

• Distribution of Underwater Tsunami Debris in a Small Bay

抄録

Field study was carried out to investigate the distribution of submerged debris generated by the tsunami on March 11, 2011. We used a digital sonar to measure the distribution and amount of the debris scattered on sea floor of a small bay. The volumes of the debris were estimated from its lateral and base areas which were detected by down and side scans of the sonar, respectively. We identified a total of 147 debris and estimated the total volume of the debris on the sea floor inside the bay. The velocity distribution was computed in the bay in the phase of the tsunami rundown using 3D hydrodynamic model. We found the debris were mostly distributed along the thalweg where the computed velocity showed the maximum value about 3.5m/s.

収録刊行物

• 土木学会論文集Ｂ２（海岸工学）

  土木学会論文集Ｂ２（海岸工学） 68 (2), I_1431-I_1435, 2012

  公益社団法人 土木学会

キーワード

• 津波
• 海底がれき
• サイドスキャンソナー
• 3次元流体モデル

詳細情報

• CRID: 1390282680296115200
• NII論文ID: 130004550736
• DOI: 10.2208/kaigan.68.i_1431
• ISSN: 18838944
• ISSN: 18842399
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可