摘要
在总结甘肃民乐—山丹6.1级和5.8级地震现场考察资料的基础上,根据地震的发震特征,结合区域构造研究的最新成果,提出本次地震是位于大黄山隆起南缘的民乐—永昌隐伏断裂的民乐—大马营段与大黄山隆起西缘的童子坝河隐伏断裂共同作用的结果,其发震机制主要受大黄山隆起向南西推挤的影响,是隆起区上拱作用的结果。
By analyzing the field investigation data of the 2003 Minle-Shandan, Gansu, M6.1, 5.8 earthquakes and their causative features, it is put forward combined with the latest regional tectonic study result that this event was produced by the joint action of the Minle-Damaying section of the Minle-Yongchang concealed fault in the south edge of the Dahuangshan uplift and the Tongzibahe concealed fault in the west edge of the Dahuangshan uplift, and it’s the result of the Dahuangshan uplift’s pushing and squeezing toward SW and the uplift district’s dooming.
出处
《地震研究》
CSCD
北大核心
2005年第2期133-140,共8页
Journal of Seismological Research
基金
国家自然科学基金项目(40372086)
中国地震局地震科学联合基金项目(604018
104073)
关键词
发震断层
发震机制
震害
地震烈度
民乐—山丹
causative fault, causative mechanism, earthquake disaster, earthquake intensity, Minle-Shandan
