Geomorphological analysis of earthquke surface fault associated with reverse active fauting

与逆向活动断裂相关的地震面断层地貌分析

基本信息

批准号：
10680106
负责人：
SAWA Hiroshi
金额：
$ 1.41万
依托单位：
TSURUOKA NATIONAL COLLEGE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10680106/
关键词：
active fault earthquake surface fault Chi-Chi earthquake 1999, Taiwan flexural scarp reverse fault interpretation of large-scale air photographs geomorphological analysis 善光寺地震善光寺地震断層郷村断層集集地震 1998年9月3日岩手県内陸北部地震 1945年三河地震深溝地震断

项目摘要

The purpose of this study is to analyze the relationship of earthquake surface fault and tectonic landform. The earthquake suface faults along the Chelungpeu Fault during the Chi-Chi earthquake 1999 in Taiwan, Hukui earthquake 1948, Kita-Tango earthquake 1927, Zenkoji earthquake 1847, Mikawa earthquake 1945 and Iwate-ken Nairiku-Hokubu earthquake 1998 are investigated. These earthquakes associated with earthquake surface faults. Tectonic landform are recognized along these earthquake fault, based on the interpretation of large-scale air photographs and the field survey.Flexural scarps are a characteristic deformed feature along these earthquake surface faults, implying that this is resulted from low angle reverse faulting.Most of earthquake surface faults in study areas situated in pre-existing active fault landforms, however a part of them is located away from pre-existing active fault landforms. Flexural scarps are situated one hundred meters to one kilometer off from the piedmont line, which indicates that recent reverse faulting migrates to the basin. The fold systems well develop in the study areas, which shows that the folding is related to the late Quaternary faulting in the unconsolidated basin deposits.

这项研究的目的是分析地震表面断层与构造地震的关系。 1999年在台湾发生Chi-chi地震期间，沿Chelungpeu的地震断层，1948年的Hukui地震，1927年的北野大地震，1847年，Zenkoji地震，1847年，Mikawa Eartquake，Mikawa Eartquake 1945年，1945年和Iwate-Ken Nairiku-Hokubuake Eartequake Eartequake Eartequake Eartequake Eartequake Eartequake 1998年。这些与地震表面断裂有关的地震。基于大规模空气照片和现场调查的解释，沿着这些地震断层确认了构造地形。富裕的疤痕是沿这些地震表面断层沿这些地震表面故障的特征性变形特征，这意味着这是由于高度的地震表面故障而导致的。弯曲的陡坡位于距Piedmont线一百米到一公里处，这表明最近的反向断层迁移到盆地。折叠系统在研究区域良好发展，这表明折叠与未固结的盆地沉积物中晚期断层有关。