干旱区生态环境知识资源中心(Arid): 1954年腾格里沙漠北7级地震断层面参数和滑动性质研究

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	1954年腾格里沙漠北7级地震断层面参数和滑动性质研究
其他题名	Fault Parameters and Slip Properties of the 1954 Northern Tengger Desert M7.0 Earthquake
	刘白云 1; 曾文浩 2; 袁道阳 1; 陈文凯 2; 牛延平 2
来源期刊	地震工程学报
ISSN	1000-0844
出版年	2014
卷号	36 期号:3 页码:622-627
中文摘要	1954年腾格里沙漠北发生7级大震,由于此次地震发生在戈壁深处,风沙作用强烈,震后破坏现象不易保存,给通过地质踏勘研究地震增加了难度。到目前为止,涉及此次地震的发震构造研究内容较少。本研究根据成丛小震发生在大震断层面附近的原则及参考前人给出极震区长轴形态,采用1985-2012年发生在地震破裂区的精定位地震目录,选定了一个长条状研究区域,将模拟退火算法和高斯一牛顿算法结合,给出了利用小震密集程度求解的主震断层面走向、倾角,并确定地震发震断裂的长度、位置。在此基础上考虑区域构造应力参数,给出已求得断层面上的滑动角。最后将反演结果与已有结果做了对照,显示反演结果与已有的结果基本一致,反演到的震源断层位于前人给出的此次地震等震线的最高烈度圈内表明反演结果是真实可信的。
英文摘要	The northern Tengger Desert M 7.0 great earthquake that occurred in 1954 resulted in varying degrees of damage in many areas of Neimenggu and its adjacent regions.Thus far,research results of the cause of this earthquake are few and inconsistent.Because it occurred in the Gobi Desert,the aeolian effect of was intense.These facts cause difficulties in studying the earthquake through geological prospecting methods.It is known that clustered small earthquakes often occur in the fault plane vicinities of large earthquakes.We used precisely relocated earthquakes that occurred near the earthquake rupture zone between 1985 and 2012 and selected a strip-shaped zone according to clustered small earthquakes and long-axis morphology in the meizoseismal area.On the basis of simulated annealing and Gauss-Newtonian nonlinear inversion algorithms,we obtained fault plane parameters of earthquakes such as strike,dip,and location by using data of densely populated small events.On this condition,rake angles of the fault plane are further inferred from regional tectonic stress parameters.Finally,we determine that the inverted results and known results are similar and that the former are in the cycle of the highest seismic intensity. These findings indicate that the inverted results are reliable.
中文关键词	腾格里沙漠北地震 ; 断层面解 ; 小震丛集 ; 最小二乘解
英文关键词	the northern Tengger Desert earthquake fault plane solution small earthquake clustering the least-squares solution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:5279533
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230991
作者单位	1.中国地震局兰州地震研究所, 兰州, 甘肃 730000, 中国; 2.甘肃省地震局, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	刘白云,曾文浩,袁道阳,等. 1954年腾格里沙漠北7级地震断层面参数和滑动性质研究[J],2014,36(3):622-627.
APA	刘白云,曾文浩,袁道阳,陈文凯,&牛延平.(2014).1954年腾格里沙漠北7级地震断层面参数和滑动性质研究.地震工程学报,36(3),622-627.
MLA	刘白云,et al."1954年腾格里沙漠北7级地震断层面参数和滑动性质研究".地震工程学报 36.3(2014):622-627.