我が国における遠地津波の襲来特性に関する検討―1700年カスケード地震津波を対象として―

• 栁澤 英明

  東北学院大学

• 藤井 直樹

  東電設計(株)

• 金戸 俊道

  東京電力(株)

書誌事項

タイトル別名

• Study on Characteristics of the 1700 Cascadia Earthquake Tsunami along the Pacific Coast of Japan

抄録

To investigate the propagation of the 1700 Cascadia tsunami, we simulated a trans-pacific tsunami using the linear long-wave and dispersive models. The model results suggest that the scattering of the tsunami excited by the Emperor Seamounts Chain causes the delay of the maximum tsunami along the Pacific coast of Japan. We further conducted simple numerical tests focusing on resolutions of bathymetry data to develop the modeling of the scattering waves. The results reveal that less than 2-min grid size of bathymetry data is required to represent the tsunami scattering waves. We simulated the 1700 Cascadia tsunami and compared the measured data with the computed tsunami heights. The computed results approximately consist with the measured data of "Lower height estimate". On the other hands, the doubling the fault model of Cascadia earthquake is required to conform the computed data to the measured data of "Upper height estimate".

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_151-I_155, 2012

  公益社団法人 土木学会

キーワード

• 津波
• 1700年カスケード地震
• 数値シミュレーション
• 古津波
• 遠地津波

詳細情報

• CRID: 1390282680296186112
• NII論文ID: 130004550750
• DOI: 10.2208/kaigan.68.i_151
• 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