| 台湾地区强震发生的构造环境与地震活动性分析 |
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| 引用本文： | 郑魁香. 台湾地区强震发生的构造环境与地震活动性分析[J]. 地震地质, 2002, 24(3): 400-411. DOI: ISSN:0253-4967.0.2002-03-011 |
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| 作者姓名： | 郑魁香 |
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| 作者单位： | 高苑技术学院土木系地震与震害预测研究室,高雄,821 |
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| 摘 要： | 台湾中部造山带前缘呈现为一弧形逆冲构造体系 ,每个弧形带分别由多个不同尺度但各自独立的次级弧形构造组成 ,而每一个弧形构造都有其各自独立的几何学、运动学和动力学特征 ,是典型的褶皱 -逆冲带 ,但同时各个次级弧形构造间却又有自相似特性。在对台湾中部地区弧形逆冲构造体系的空间位置与地震活动间的关系分析基础上 ,归纳出中部弧型逆冲地震带的地震活动特征 ,以台湾东西地震区的构造划分和北部、中部与南部不同的弧陆构造现象 ,描述了台湾地区的近代地震活动 (190 0年以来的 10 0年间 )与现代地震地质构造的关系
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| 关 键 词： | 弧形带 活动构造带 地震活动性 |
| 文章编号： | 0253-4967(2002)03-0400-12 |
| 修稿时间： | 2001-05-10 |
AN ANALYSIS OF TECTONIC ENVIRONMENT AND CONTEMPORARY SEISMICITY OF FRONTAL OROGENY IN CENTRAL TAIWAN AREA |
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| CHENG Kuei hsiang. AN ANALYSIS OF TECTONIC ENVIRONMENT AND CONTEMPORARY SEISMICITY OF FRONTAL OROGENY IN CENTRAL TAIWAN AREA[J]. Seismology and Geology, 2002, 24(3): 400-411. DOI: ISSN:0253-4967.0.2002-03-011 |
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| Authors: | CHENG Kuei hsiang |
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| Abstract: | The central part of Taiwan area shows an arcuate thrust tectonics. Every arcuate belt is composed of a series of varying scales of sub arcs, which appear as a separate fold and thrust belt with independent characteristics of geometry, kinematics and mechanics and a self similar system as well. The kinematics of arc changes from thrusting on the top of the arc to the oblique thrusting and wrenching at the sections, and finally thrusts to the bottom of the arc. The arcuate thrust tectonics is composed of frontal, lateral and oblique ramps at depth. Each earthquake deformation belt is related to the independent arc. Strong earthquakes correspond to the large scale arcs, and medium earthquakes to the small ones, and even to the smaller sub arcs. Finally, the mapping analysis is carried out between the contemporary seismicity and the space area of the arcuate thrusting tectonic system in the central part of Taiwan area, especially on strong Chi Chi aftershock series. |
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| Keywords: | arcuate zone active tectonic zone seismic activity aftershock series |
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