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倒楔运动与地震带的关联性研究
Study on the Relationship Between the Movement of the Inversed Wedge Block and Seismic Belt
【摘要】 研究认为,地震是楔块运动引起的,楔块运动的主要动力来自于楔块内部的隐爆—均衡作用。"两堑夹一垒"是楔块运动系统的基本形式。研究发现,大洋中脊地震带、环太平洋地震带和大陆裂谷地震带(以郯庐断裂地震带为例)均位于"两堑夹一垒"楔块系统中,其中一垒的活动,即倒楔的运动与地震带紧密相关。
【Abstract】 Based on previous studies,we propose that the earthquake is mainly caused by the wedge block movement which are derived from the concealed explosive-equilibrium effect.Moreover,the fundamental mode of the wedge block movement is graben-horst structure.Our results highlight that the mid-ocean ridge seismic belt,circum-pacific seismic belt and continental rift seismic belt(Tanlu fault zone as an example)all lie in the graben-horst structure and the movement of the horst might be closely related to the seismic activity.
【关键词】 地堑;
地垒;
硬楔;
软楔;
正楔;
倒楔;
【Key words】 graben; horst; soft wedge block; hard wedge block; upright wedge block; inversed wedge block;
【Key words】 graben; horst; soft wedge block; hard wedge block; upright wedge block; inversed wedge block;
【基金】 2006年宁夏回族自治区高校科研资助项目
- 【文献出处】 国际地震动态 ,Recent Developments in World Seismology , 编辑部邮箱 ,2009年05期
- 【分类号】P315.1
- 【被引频次】4
- 【下载频次】38