Estimation method of historical tsunamis by sedimentology

历史海啸的沉积学估算方法

• 批准号: 06044015
• 负责人: SHUTO Nobuo
• 金额: $ 4.48万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06044015/
• 关键词: Sedimentation; Numerical model; 1992 Flores tsunami; trapped wave; サントリ-ニ島; 津波堆積物; 東ジャワ地震津波; 津波遡上; 堆積学; 津波災害; フローレス島津波

Sedimentation processes caused by a modern tsunami have been discussed from the point of view of geologic and numerical investigations of the 1992 Flores tsunami in Indonesia.Geologic evidence on Babi Island shows an invasion of two waves with different direction and magnitude, which resulted in widespread deposition of marine sand on the north and south-southewest shores. On the latter, coarse and well-sorted carbonate sand with molluscan shells suggests that much more destructive waves swept across the southern coast as compared with the northern coast where the deposit included medium carbonate sand with a silty component.A physical explanation for such destructive waves on the southern coast of Babi is provided by a numerical simulation of the tsunami generation and propagation. The geologic and numerical results indicate that an isolated island surrounded by a circular shoreline or reef edge will be the hardest hit on the coast on the back side of the island relative to the tsunami source.

从1992年印度尼西亚弗洛勒斯海啸的地质和数值研究的角度讨论了现代海啸引起的沉积过程。巴比岛的地质证据表明，有两股不同方向和强度的波浪入侵，导致北、西南海岸广泛沉积海砂。对于后者，粗且分选良好的带有软体动物贝壳的碳酸盐砂表明，与北部海岸相比，席卷南部海岸的破坏性波浪要大得多，北部海岸的沉积物包括含有粉质成分的中度碳酸盐砂。海啸产生和传播的数值模拟为巴比南部海岸的这种破坏性波浪提供了物理解释。地质和数值结果表明，被圆形海岸线或礁石边缘包围的孤岛将是相对于海啸源的岛屿背面海岸受到最严重的打击。

项目成果

Minoura, K., V.G., Gusiakov, A.Kurbatov, S.Takeuchi, J.I.Bondevik and T.Oda: "Tsunami sedimentation associated with 1923 Kamchatka earthquake" Sedimentary Geology. 106. 145-154 (1996)

Minoura, K.、V.G.、Gusiakov、A.Kurbatov、S.Takeuchi、J.I.Bondevik 和 T.Oda：“与 1923 年堪察加地震相关的海啸沉积”沉积地质学。

Dawson A.G.,S.Shi,S.Dawson.T.Takahashi and N.Shuto: "Coastal sedimentation associated with the june 2nd and 3rd. 1994 Tsunami in Ralegwesi, Java" Quaternary Science Reviews. (Printing). (1995)

Dawson A.G.、S.Shi、S.Dawson.T.Takahashi 和 N.Shuto：“与 1994 年 6 月 2 日和 3 日爪哇拉雷格韦西海啸相关的海岸沉积”第四纪科学评论。

Minoura,K.et al.: "Tsunami sedimentation associated with 1923 Kamchatka earthquake" Sedimentary Geology. Vol.106. 145-154 (1996)

Minoura,K.et al.：“与 1923 年堪察加地震相关的海啸沉积”沉积地质学。

今村文彦ら: "1992年フローレス島地震津波による堆積作用に関する現地調査" 沿岸工学論文集. 第43巻. 686-690 (1996)

Fumihiko Imamura 等人：“1992 年弗洛勒斯岛地震和海啸引起的沉积物现场调查”海岸工程论文第 43 卷 686-690 (1996)

Dawson,A.G.et al.: "Coastal sedimentation associated with the June 2nd and 3rd,1994 Tsunami in Rajegwesi,Java" the IGCP 367 meeting on Rapid castal changes,Quaternary Science Reviews. 15. 901-912 (1996)

Dawson, A.G. 等人：“与 1994 年 6 月 2 日至 3 日爪哇 Rajegwesi 海啸相关的海岸沉积”，IGCP 367 快速铸体变化会议，第四纪科学评论。