| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
中央構造線活断層帯川上断層の完新世後期における活動履歴 |
|
言語 |
ja |
| タイトル |
|
|
タイトル |
Late Holocene faulting along the Kawakami fault, an active segment of the Median Tectonic Line, southwest Japan |
|
言語 |
en |
| 作成者 |
堤, 浩之
岡田, 篤正
後藤, 秀昭
松木, 宏彰
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
中央構造線 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
川上断層 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
トレンチ調査 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
最新活動時期 |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Median Tectonic Line |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Kawakami fault |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
paleoseismic trenching |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
timing of the most recent faulting |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
290 |
| 内容記述 |
|
|
内容記述 |
The Median Tectonic Line active fault zone (MTL), with slip rates as high as 5-10 mm/yr, is one of the most active inland faults in Japan. However, the seismic hazard evaluation on the MTL is hampered by insufficient paleoseismological data, mainly due to sparse distribution of trenching sites along the fault zone. We have conducted a first major paleoseismological study of the Kawakami fault, a segment of the MTL in northwestern Shikoku. The study includes aerial photograph interpretation and paleoseismic trenching. Two trenches were excavated across the Kawakami fault northeast of downtown Komatsu, Ehime Prefecture in 1997. The sediments exposed on the walls in the eastern trench are middle to late Holocene fluvial deposits ranging in texture from silt to gravel. These sediments are offset along an almost vertical, 3-m-wide fault zone. The sense of apparent displacement across the fault zone is down to the north, consistent with Holocene scarps around the trench site. The sediments in the trench contain evidence for three episodes of surface-rupturing earthquake in the past 4000 years B.P. The most recent surface-rupturing earthquake, event A, on the Kawakami fault occurred sometime during the 7th and 19th century AD. Historical documents report extensive damage around the trench site during an earthquake in 1596, and this earthquake may be correlated to the latest faulting on the Kawakami fault. The penultimate event, event B, occurred sometime during the 1st and 10th century AD. Another earthquake, event C, occurred after the deposition of layer Ⅶ, which was radiometrically dated at about 4000 years B.P. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
活断層研究会 |
| 言語 |
|
|
言語 |
jpn |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
URI |
|
|
関連識別子 |
http://topo.earth.chiba-u.jp/afr/index.htm |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0918-1024 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN10157356 |
| 開始ページ |
|
|
開始ページ |
77 |
| 書誌情報 |
活断層研究
活断層研究
号 19,
p. 77-86,
発行日 2000-03
|
| 旧ID |
25453 |
ActiveFaultResearch_19_77.pdf (1.3 MB)
