能登半島における津波の屈折効果

• 羽鳥 徳太郎

書誌事項

タイトル別名

• Refraction Effect of Tsunamis around the Noto Peninsula, the Japan Sea
• ノト ハントウ ニ オケル ツナミ ノ クッセツ コウカ

抄録

The Noto Peninsula coast has been suffered from the tsunamis originated along the eastern margin of the Japan Sea. According to the old documents, the 1833 Yamagata-Oki tsunami reached 5.3m at Wajima (tip of Noto Peninsula), and killed 47 persons. Inundation heights of the 1964 Niigata, 1983 Nihonkai-Chubu and 1993 SW. Hokkaido tsunamis were 2-4m at Wajima and its neighboring area. These tsunami heights are more than 2-3.5 times larger than the ones expected from the average tsunami magnitude. Based on the refraction diagrams and the shoaling-refraction factors around the peninsula, amplification factors estimated by the Green's formula are 3.0-4.0 at the north coast, 1.5 at the west coast and 1.0 at the east coast. The distribution patterns of the calculated factors nearly agree with those of the inundation heights for each tsunami. In case of the 1964 Niigata tsunami having the period of about 20min, the seishe of Nanao Bay (east side of peninsula) may be excited, because the maximum wave occurred 2.7 hour late from the initial wave. Tsunamis generated off Yamagata and SW. Niigata are strongly affected by the shoaling-refraction.

収録刊行物

• 地震　第２輯

  地震　第２輯 52 (1), 43-50, 1999

  公益社団法人 日本地震学会

キーワード

• Tsunami heights
• Refraction diagrams around Noto Peninsula
• Shoaling-refraction factor

詳細情報

• CRID: 1390001204307027712
• NII論文ID: 10004680026
• NII書誌ID: AN00305741
• DOI: 10.4294/zisin1948.52.1_43
• ISSN: 18839029
• ISSN: 2186599X
• ISSN: 00371114
• NDL書誌ID: 4824259
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4824259
• Web Site: https://www.jstage.jst.go.jp/article/zisin1948/52/1/52_1_43/_pdf
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可