Hi-resolution analysis of tsunami event from coastal area in Shikoku and Kyushu

四国和九州沿海地区海啸事件的高分辨率分析

• 批准号: 18510156
• 负责人: OKAMURA Makoto
• 金额: $ 2.44万
• 依托单位: Kochi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18510156/
• 关键词: Earthquake; Tsunami; Tsunami sediments; Natural Disaster; Geology; Nankai Earthquake; Shikoku Island

The main purpose of this study is reconstruction of the Nankai Earthquake interval recorded as tsunami sediment from shore-lagoon along the Kyushuu and Shikoku Island. Based on our previous study fourteen tsunami sediments were distinguished from 1300yBP to 4500yBP interval. These tsunami sediments are also included crustal subsidence events such as marine plankton yield interval layers. Among these tsunami records eight layers through 3500 years shows remarkable huge earthquake, which interval has 350 years in average.Additional work on Ryujin-ike in Kyushu, we determined the age of tsunami event which correspond to Tadasu-ike simultaneously. These age are 1600yBP, 1900yBP, 2600yBP, 3000yBP and 3300yBP respectably. Kaniga-ike situated in central Shikoku also yielded three huge tsunami events correlatable to historical records known as Hoei, Shohei and Tenmu Nankai Earthquakes for past 1000 years.Huge earthquake series such as Hoei-type Nankai Earthquake are determined confirmably through two long-distanced sites in Kyushu and Shikoku along the Nanakai Trough.

这项研究的主要目的是重建了南卡地震间隔，记录为沿着Kyushuu和Shikoku Island沿岸的海岸延迟的海啸沉积物。根据我们先前的研究，将14个海啸沉积物从1300YBP到4500YBP间隔区分开。这些海啸沉积物还包括地壳沉降事件，例如海洋浮游生产间隔层。在这些海啸中，有八层至3500年的记录显示出了巨大的地震，间隔平均为350年。在九州的ryujin-ake上进行了研究，我们确定了与Tsunami事件的年龄相对应的，该年龄同时对应于Tadasu-ake-ike-ike-ike-sike。这些年龄为1600ybp，1900ybp，2600ybp，3000ybp和3300ybp。位于Shikoku中部的Kaniga-ike还产生了与历史记录相关的三个巨大的海啸事件。

项目成果

Recurrence Intervals of Nankai Earthquakes

南海地震的复发间隔

• 发表时间: 2007
• 作者: Matsuoka;H
• 通讯作者: H

Recurrence Intervals of the Hoei-type Nankai Earthquakes

宝永型南海地震的复发间隔

• 发表时间: 2006
• 期刊: Eos Trans. AGU (Fall Meet. Suppl., Abstract) 87(52)
• 作者: Matsuoka;H.;Okamura;M.;Chida;N.;Shimazaki;K.
• 通讯作者: K.

津波堆積物に記録された南海地震の繰り返し間隔

海啸沉积物记录的南海地震重复间隔

• 发表时间: 2007
• 作者: 松岡 裕美、岡村 眞;他
• 通讯作者: 他

「研究成果報告書概要(和文)」より

摘自《研究结果报告摘要（日文）》

• 发表时间: 2005
• 作者: Kawauchi;et. al.;Nishimura et al.;Dezawa et al.;Yoshizawa et al.;星野 幹雄;星野 幹雄
• 通讯作者: 星野 幹雄