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Distribution of the inferred horizontal acceleration and topographic changes at Rokko mountains induced by the 1995 Hyogoken-nanbu earthquke

1995 年兵库县南部地震引起的六甲山水平加速度和地形变化的推断分布

基本信息

批准号：
09680176
负责人：
ISHII Takayuki
金额：
$ 1.79万
依托单位：
Osaka kyoiku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

The report aids to evaluate the equivalent horizontal acceleration and to make clear topographic changes at the Rokko mountains induced by the 1995 Hyogoken-nanbu earthquake, The results obtained shows that several spots of the mountains had 1 g(g=garvitational acceleration) or more of the equivalent horizontal acceleration, which evaluated by means of the displaced stones and tombstones. This value is abnormally higher than that reported. This may be thought to suggest topographic effect. From a view point of debris production, the topographic changes by the earthquake have introduced to debris supply on the mountain slope to build up talus slopes and clitter slopes, On the other hand, the earthquake induced to peculiar fissures across ridge, which was recognized at three sites of the mountains where suggested the strong acceleration of 1 or more. Examination of the acted direction of the acceleration leads to a conclusion that the fissures across ridge may be attributed to be tectonic in origin induced by the earthquake.

这份报告有助于评估1995年Hyogoken-Nanbu地震引起的Rokko山脉的等效水平加速度，并清楚地了解其地形变化。结果表明，该山区的一些地点有1g(g=重力加速度)或更多的等效水平加速度，这是用移动的石头和墓碑来评估的。这个值比报道的值高得不正常。这可能被认为是地形效应的结果。从岩屑产生的角度来看，地震的地形变化导致山坡上的岩屑补给，形成了距骨坡和碎屑坡，另一方面，地震诱发了横跨山脊的特殊裂缝，在三个地点都发现了强烈的加速度为1或1以上。通过对加速度作用方向的考察，认为横跨山脊的裂隙可能是地震引起的构造裂隙。