海原8.5级地震发震构造与应力场的讨论
DISCUSSION ON THE CAUSATIVE STRUCTURE OF M=8.5 EARTHQUAKE IN HAIYUAN AND ITS STRESS FIELD
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摘要: 本文从地震地质角度,对1920年海源大震发震构造带,主要是对极震区发震构造在第四纪以来的活动性及活动特点以及产生这一活动的应力场与动力来源等进行了讨论。之后,在分析区内活动构造的基础上,得到两点有关海原大震发生的重要地质信息。Abstract: In this paper, the activity Since Quarternarly and characteristics of the causative fault zone, (mainly the causative fault zone of meizo-seismal region) the stress field and force source of Haiyuan earthquake in 1920 have been discussed. Based on this, two pieces of the important information about the occurence of Haiyuan earthquake are obtained.
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[1] 翁文灏,锥指集,1927年。 [2] Ь.А.彼德鲁舍夫斯基,关于1920年甘肃地震的地震地质情况,地球物理学报,8, 2, 1959. [3] 兰州地震研究所等编,1920年海原大地震,地震出版社,1980. [4] 丁国瑜,活动走滑断裂带的断错水系与地震,地震,1, 1982. [5] 査小刚等,海原5.5级地震宏观考察初步总结,西北地震学报(海原5.5级地震专辑),1983. [6] 廖玉华等,海原5, 5级地震发震构造的讨论,西北地震学报,(海原5.5级地震专辑),1983. [7] 汪一鹏,靑藏高原的降起及其地震活动,地震战线,第六期,1980. -

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