Geomorphological study on large tsunamis in coral sea region.

珊瑚海地区特大海啸地貌研究.

• 批准号: 62580200
• 负责人: NAKATA Takashi
• 金额: $ 0.83万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62580200/
• 关键词: Tsunami; Historical tsunami; Tsunami deposits; サンゴ礁; ^<14>C年代; 14C年代

This projext aims to clarify nateure of historical and prehistorical large tunamis. Southern islands of the Ryukyus are selected for the study area of this study, because tsunami deposits composed of subrecent reef coral fossils enable us to restore timing, location and magnitude of tsunamis by analyses of radiocarbon ages of the fossils and their distribution on land.Field study has been carried out mainly in the Ishigaki and Miyako Islands which have been attacked by destructive tsunami in 1771. Radiocarbon ages of tsunami deposits revealed that the islands have been repeatedly attacked by large tumanis of 1771 scale or bigger than that. It is deduced from the ages and distribution of tsunami deposits that tsunamis prior to 1771 took place about 500,1,1000,1,900,2,400 and 4,000 yr. B.P..

这种Projext旨在阐明历史和史前大型Tunamis的纪念碑。选择了这项研究的研究领域的南部岛屿，因为海啸由亚果珊瑚礁珊瑚化石组成，使我们能够通过对陆地上的化石及其在土地上的占领，恢复了对化石及其在陆地上的攻击的分析，并通过对伊斯兰国进行了MII岛的分布来恢复黄昏的时间，位置和大小。 1771年的破坏性海啸。海啸沉积物的放射性碳年龄表明，这些岛屿已被1771年的大型Tumanis反复攻击，或者比这更大。它是从1771年之前海啸矿床的年龄和分布中推导的，大约是500,1,1000,1,1000,1,900,2,400和4,000年。 B.P ..

项目成果

KAWANA,T.;P.A.Pirazzoli.: 第四紀研究. (1989)

卡瓦纳，T.；皮拉佐利：第四纪研究。

河名俊男,中田高: 地理学評論. (1989)

川奈俊夫，中田隆：《地理评论》（1989）。

Kawana, T.; Nakata, T.; A. Omura: "Age of fossil coral from the ' Tsunami Ofuishi' on Ohama of Ishigaki island, the South Ryukyus, Japan." "Daiyonki-kenkyu" (The Quatermary Research). 26. 155-158 (1987)

卡瓦纳，T.；

Kawana, T.; Nakata, T.: "Meiwa tsunami and submarine crustal movements." "Rekishi-jishin" (Historical Earthquake). 3. 181-187 (1987)

卡瓦纳，T.；

河名俊男,中田高: 歴史地震. 3. 181-187 (1987)

河名俊夫，中田隆：历史地震。3. 181-187 (1987)