新疆天山南部构造区不同时段小地震目录完整性分析
|
摘要
依据天山地区地质构造、运动强度和历史地震活动的差异性,将南部天山地区划分为南天山东段和南天山西段两个构造区。考虑到新疆台网建设的区域差异性和时间的阶段性,在对两个构造区不同震级下限地震频度时间特征分析的基础上,研究了各构造区不同时段的G—R关系和震级分布特征,并运用Z检验方法对各区不同时段小地震目录差异的显著性进行了分析,进而评估了两个构造区1970年以来不同时段的小地震目录完整性,为区域地震活动性研究中地震目录的合理运用提供参考依据。
According to geological tectonics,motion strength and the difference between the historical earthquake activities in the Tianshan Mountain region,we divide the South Tianshan Mountain into two tectonic regions—the eastern segment and the western one.Considering the fact that the sub-stations of Xinjiang Seismic Network was established in different periods and distributed not so well,and based on the analysis of the frequency character with the different magnitude thresholds in the two tectonic regions,we study G-R expression and character of magnitude distribution in different periods in the two regions,and apply Z Test to analyze the difference between the small earthquake catalogues in different periods,then we evaluate the catalogue completeness of small earthquakes in different periods since 1970.The result may provide reference for people to apply reasonably the earthquake catalogue to the regional seismicity research.
According to geological tectonics,motion strength and the difference between the historical earthquake activities in the Tianshan Mountain region,we divide the South Tianshan Mountain into two tectonic regions—the eastern segment and the western one.Considering the fact that the sub-stations of Xinjiang Seismic Network was established in different periods and distributed not so well,and based on the analysis of the frequency character with the different magnitude thresholds in the two tectonic regions,we study G-R expression and character of magnitude distribution in different periods in the two regions,and apply Z Test to analyze the difference between the small earthquake catalogues in different periods,then we evaluate the catalogue completeness of small earthquakes in different periods since 1970.The result may provide reference for people to apply reasonably the earthquake catalogue to the regional seismicity research.
引文
邓起东,张培震,冉勇康,等.2003.中国活动构造与地震活动[J].地学前缘,10(特刊):66-73.
黄纬琼,李文香,曹学锋.1994.中国大陆地震资料完整性研究之二[J].地震学报,16(4):423-432.
皇甫岗,李忠华.2010.20世纪云南地区地震目录记录完全性评价[J].地震研究,33(1):1-6.
李莹甄,沈军,王海涛.2005.天山各分区地震活动性与能量积累阶段关系初探[J].中国地震,21(4):496-507.
马宏生,刘杰,张国民,等.2005.基于G-R关系的应变积累释放模型研究中国大陆强震的分区活动[J].27(4):355-366.
马集遐.1994.中国大陆地震构造带的初步划分及其应用[J].中国地震,10(3):251-261.
苏有锦,李永莉,李忠华,等.2003.川滇地区区域地震目录完整性最小震级分析[J].地震研究,26(增刊):10-16.
王海涛,李莹甄,屠泓为.2006.新疆历史地震目录完整性分析[J]内陆地震.20(1):10-17.
尹光华,段天山,刘平仁,等.2010.新疆十五测震台网的监测能力及其构造意义[J].内陆地震,24(2).
张培震,王琪,马宗晋.2002.中国大陆现今构造运动的GPS速度场与活动地块[J].地学前缘,9(2):430-441.
朱令人.2002.新疆通志(十一卷.地震志)[M].乌鲁木齐:新疆人民出版社,307-311.
Aron A,Hardebeck J L.2009.Seismicity rate changes along the centralCalifornia Coast due to stress changes from the2003M6.5SanSimeon and2004M6.0Parkfield Earthquakes[J].BSSA,99(4):2280-2292.
Gutenberg B,Richter C F.1941.Seismicity of the earth[J].Geol Soc A-mer Spec Pap,34(1):1-133.
黄纬琼,李文香,曹学锋.1994.中国大陆地震资料完整性研究之二[J].地震学报,16(4):423-432.
皇甫岗,李忠华.2010.20世纪云南地区地震目录记录完全性评价[J].地震研究,33(1):1-6.
李莹甄,沈军,王海涛.2005.天山各分区地震活动性与能量积累阶段关系初探[J].中国地震,21(4):496-507.
马宏生,刘杰,张国民,等.2005.基于G-R关系的应变积累释放模型研究中国大陆强震的分区活动[J].27(4):355-366.
马集遐.1994.中国大陆地震构造带的初步划分及其应用[J].中国地震,10(3):251-261.
苏有锦,李永莉,李忠华,等.2003.川滇地区区域地震目录完整性最小震级分析[J].地震研究,26(增刊):10-16.
王海涛,李莹甄,屠泓为.2006.新疆历史地震目录完整性分析[J]内陆地震.20(1):10-17.
尹光华,段天山,刘平仁,等.2010.新疆十五测震台网的监测能力及其构造意义[J].内陆地震,24(2).
张培震,王琪,马宗晋.2002.中国大陆现今构造运动的GPS速度场与活动地块[J].地学前缘,9(2):430-441.
朱令人.2002.新疆通志(十一卷.地震志)[M].乌鲁木齐:新疆人民出版社,307-311.
Aron A,Hardebeck J L.2009.Seismicity rate changes along the centralCalifornia Coast due to stress changes from the2003M6.5SanSimeon and2004M6.0Parkfield Earthquakes[J].BSSA,99(4):2280-2292.
Gutenberg B,Richter C F.1941.Seismicity of the earth[J].Geol Soc A-mer Spec Pap,34(1):1-133.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心