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全球及中国大陆强震时序活动特征
邵志刚,马宗晋,蔡晋安,任金卫,陈会忠,张浪平
Author NameAffiliation
Shao Zhigang Institute of Earthquake ScienceChina Earthquake AdministrationBeijing 100036China 
Ma Zongjin Institute of GeologyChina Earthquake AdministrationBeijing 100029China 
Cai Jin'an Institute of Earthquake ScienceChina Earthquake AdministrationBeijing 100036China 
Ren Jinwei Institute of Earthquake ScienceChina Earthquake AdministrationBeijing 100036China 
Chen Huizhong Institute of Earthquake ScienceChina Earthquake AdministrationBeijing 100036China 
Zhang Langping Institute of Earthquake ScienceChina Earthquake AdministrationBeijing 100036China 
摘要:
基于强震目录,讨论了全球、中国大陆西部及周边“大三角地区”和中国大陆地区强震活动时序特征。依据8级地震分段活动特征分析认为,20世纪60年代前后全球特大地震活动状态存在显著差异;利用最优分割统计分析认为,自1800年以来“大三角地区”经历了持续时间为100余年的8级地震活动过程;进一步分析认为全球和“大三角”地区强震活动可能具有至少百年尺度的地震“周期”,而且具有一定的准同步性。中国大陆地区MS≥7.0浅源地震活动明显受控于“大三角”地区和全球更大空间尺度的地震活动,地震活动时序上表现为十几年和近百年不同时间层次上的活动特征。
关键词:  全球  中国大陆  强震活动
DOI:
分类号:
基金项目:
The Characteristics of Time Series of Strong Earthquakes in the World and the Chinese Mainland
Shao Zhigang,Ma Zongjin,Cai Jin'an,Ren Jinwei,Chen Huizhong,Zhang Langping
Abstract:
Based on the strong earthquake catalogue,this paper discusses the characteristics of the time series of strong earthquake activities in the world,western Chinese mainland and its peripheral“big triangle seismic region”,as well as the Chinese mainland. According to the analysis of the periodic features of global seismicity of M≥8. 0 strong events,it is found that there is significant difference in global seismicity before and after the 1960s. Statistical analysis with the Fisher method has revealed that the “big triangular seismic region”has experienced a process of M8. 0 earthquake activity with a duration of over a hundred years since 1800. Further analysis shows that the global seismicity and the“big triangular seismic region”possibly has a period of a hundred-year scale,and has quasisynchronicity to a certain extent. The shallow earthquake activity of MS ≥7. 0 in the Chinese mainland is obviously controlled by the seismicity in the big triangular seismic region and by global seismicity in a larger spatial-scale. In terms of the time series of these earthquakes,the seismicity shows a decadal and century-scale activity patterns.
Key words:  Global  Chinese mainland  Strong earthquake activity