大青山山前活动断裂带分段与潜在震源区划分
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摘要
潜在震源区的划分主要包括潜在震源区范围的划定以及震级上限的确定,目前遵循地震构造类比和地震活动重复等原则。而活断层的分段特性也是潜在震源区划分时必须考虑的一个重要因素。大青山山前断裂带至今有3种不同的分段方案,文中比较分析了前人对大青山山前断裂带的分段,并在此基础上对大青山及山前盆地的潜在震源区作了新的划分。鄂尔多斯块体周缘被拉张性断陷盆地围绕,这些断裂系地震构造相似,且除呼包盆地外均有历史8级以上地震记录。文中将大青山山前断裂带与鄂尔多斯块体周缘断裂系进行了构造对比,特别是与华山山前断裂进行了断裂活动性定量对比,得出雪海沟到土左旗段的震级上限为8级,断裂两端潜源震级上限均为7.5级。
Identification of potential seismic zone follows the earthquake structure analogy and seismic activity repetition principles at present.Active fault segmentation is an important aspect and should be considered when identifying potential seismic zones.There are three different segmentation plans along Daqingshan piedmont fault,Inner Mongolia.This article compares and analyses the segmentations and then gets a new potential seismic zone identification plan along Daqingshan piedmont fault.Identification of potential seismic zone includes the range subdivision and the estimation on the maximum earthquake magnitude of potential seismic zones.This article sub-divides the ranges of potential seismic zones according to active fault segmentation plan along the Daqinshan piedmont fault proposed by Ran Yong-kang.Ordos Massif is surrounded by depression zones which have similar earthquake structures and historical earthquake records with magnitude over 8 expect the Hu-Bao depression zone.So,this paper compares Daqingshan piedmont fault with other depression zones around Ordos Massif,especially the Huashan piedmont fault,and gets the conclusion of the maximum earthquake magnitude of Daqingshan potential seismic zones.
Identification of potential seismic zone follows the earthquake structure analogy and seismic activity repetition principles at present.Active fault segmentation is an important aspect and should be considered when identifying potential seismic zones.There are three different segmentation plans along Daqingshan piedmont fault,Inner Mongolia.This article compares and analyses the segmentations and then gets a new potential seismic zone identification plan along Daqingshan piedmont fault.Identification of potential seismic zone includes the range subdivision and the estimation on the maximum earthquake magnitude of potential seismic zones.This article sub-divides the ranges of potential seismic zones according to active fault segmentation plan along the Daqinshan piedmont fault proposed by Ran Yong-kang.Ordos Massif is surrounded by depression zones which have similar earthquake structures and historical earthquake records with magnitude over 8 expect the Hu-Bao depression zone.So,this paper compares Daqingshan piedmont fault with other depression zones around Ordos Massif,especially the Huashan piedmont fault,and gets the conclusion of the maximum earthquake magnitude of Daqingshan potential seismic zones.
引文
安卫平.1990.断陷带内潜在震源区上限震级的估计[J].山西地震,9(1):15—23.AN Wei-ping.1990.The estimate on the maximum earthquake magnitude of potential seismic zones in depression zones[J].Earthquake Research in Shanxi,9(1):15—23(in Chinese).
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.DENG Qi-dong,ZHANG Pei-zhen,RAN Yong-kang,et al.2003.Active tectonics and earthquake activities in China[J].Earth Science Frontiers,10(Suppl):66—73(in Chinese).
丁韫玉,狄秀玲.1991.潜在震源区不确定性因素分析[J].中国地震,7(4):33—38.DING Yun-yu,DI Xiu-ling.1991.Analysis on uncertainty factors of potential earthquake source region[J].EarthquakeResearch in China,7(4):33—38(in Chinese).
国家地震局“鄂尔多斯周缘活动断裂系”课题组.1988.鄂尔多斯周缘活动断裂系[M].北京:地震出版社.The Research Group on Active Fault System around Ordos Massif.1988.Active Fault System around Ordos Massif[M].Seismological Press,Beijing(in Chinese).
胡聿贤.1999.地震安全性评价技术教程[M].北京:地震出版社.130—153.HU Yu-xian.1999.The Technic Tutorial of Safety Evaluation on Earthquake[M].Seismological Press,Beijing.130—153(in Chinese).
何宏林,周本刚.1993.地震活断层分段与最大潜在地震[J].地震地质,15(4):333—340.HE Hong-lin,ZHOU Ben-gang.1993.Segmentation of seismo-active faults and the potential maximum earthquakemagnitude on the segments[J].Seismology and Geology,15(4):333—340(in Chinese).
何仲太.2007.大青山山前活动断裂的分段地震危险性概率评估[A].见:中国地震局地壳应力研究所编.地壳构造与地壳应力文集(19).北京:地震出版社.35—41.HE Zhong-tai.2007.Occurrence probability of characteristic earthquakes on the segments of Daqingshan piedmont fault[A].I:Institute of Crustal Dynamics,CEA(ed).Crustal Tectonics and Crustal Stress(19).SeismologicalPress,Beijing.35—41(in Chinese).
江娃利,肖振敏,王焕贞,等.2001.内蒙古大青山山前活动断裂带的地震破裂分段特征[J].地震地质,23(1):24—34.JIANG Wa-li,XIAO Zhen-min,WANG Huan-zhen,et al.2001.Segmentation character of seismic surface ruptures ofthe piedmont active fault of Mt.Daqingshan,Inner Mongolia[J].Seismology and Geology,23(1):24—34(inChinese).
李克,吴卫民,杨发,等.1994.大青山山前活动断裂分段性研究[A].见:中国地震学会地震地质专业委员会编.中国活动断层研究.北京:地震出版社.102—113.LI Ke,WU Wei-ming,YANG Fa,et al.1994.A study on segmentation of the Daqingshan frontal active fault[A].In:Committee of Seismogeology,Seismological Society of China(ed).Research on Active Faults in China.Seismological Press,Beijing.102—113(in Chinese).
冉勇康,张培震,陈立春.2003.河套断陷带大青山山前断裂晚第四纪古地震完整性研究[J].地学前缘,10(增):207—216.RAN Yong-kang,ZHANG Pei-zhen,CHENLi-chun.2003.Research on the completeness of paleoseismic activity historysince late Quaternary along the Daqingshan piedmont fault in Hetao Depression Zone,North China[J].EarthScience Frontiers,10(Suppl):207—216(in Chinese).
吴卫民,李克,马保起,等.1995.大青山山前断裂带大型组合探槽的全新世古地震研究[A].见:中国地震局地质研究所编.活动断裂研究(4).北京:地震出版社.123—132.WUWei-ming,LI Ke,MA Bao-qi,et al.1995.Study on Holocene paleoearthquakes in large composite trench on theDaqingshan piedmont fault[A].In:Institute of Geology,CEA(ed).Research on Active Faults(4).SeismologicalPress,Beijing.123—132(in Chinese).
徐锡伟,邓起东.1990.山西霍山山前断裂晚第四纪活动特征和1303年洪洞8级地震[J].地震地质,12(1):21—30.XU Xi-wei,DENG Qi-dong.1990.The features of late Quaternary activity of the piedmont fault of Mt·Huoshan,Shanxiprovince and1303Hongdong earthquake[J].Seismology and Geology,12(1):21—30(in Chinese).
赵孟为.1990.华北克拉通沉积盆地形成与演化及油气赋存[M].兰州:西北大学出版社.146—155.ZHAO Meng-wei.1990.The Formation and Development of the Craton Deposited Basin and Its Oil Storage in NorthChina[M].Northwest University Press,Lanzhou.146—155(in Chinese).
周本刚,张裕明,董瑞树,等.1997.划分潜在震源区的地震地质规则研究[J].中国地震,13(3):241—252.ZHOU Ben-gang,ZHANG Yu-ming,DONG Rui-shu,et at.1997.Study on the geological structural criteria ondetermination of potential earthquake region[J].Earthquake Research in China,13(3):241—252(in Chinese).
Schwartz D P,Coppersmith K J.1984.Fault behavior and characteristic earthquakes:example from the Wasatch andAndreas fault zone[J].J Geophys Res,(69):5681—6698.
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.DENG Qi-dong,ZHANG Pei-zhen,RAN Yong-kang,et al.2003.Active tectonics and earthquake activities in China[J].Earth Science Frontiers,10(Suppl):66—73(in Chinese).
丁韫玉,狄秀玲.1991.潜在震源区不确定性因素分析[J].中国地震,7(4):33—38.DING Yun-yu,DI Xiu-ling.1991.Analysis on uncertainty factors of potential earthquake source region[J].EarthquakeResearch in China,7(4):33—38(in Chinese).
国家地震局“鄂尔多斯周缘活动断裂系”课题组.1988.鄂尔多斯周缘活动断裂系[M].北京:地震出版社.The Research Group on Active Fault System around Ordos Massif.1988.Active Fault System around Ordos Massif[M].Seismological Press,Beijing(in Chinese).
胡聿贤.1999.地震安全性评价技术教程[M].北京:地震出版社.130—153.HU Yu-xian.1999.The Technic Tutorial of Safety Evaluation on Earthquake[M].Seismological Press,Beijing.130—153(in Chinese).
何宏林,周本刚.1993.地震活断层分段与最大潜在地震[J].地震地质,15(4):333—340.HE Hong-lin,ZHOU Ben-gang.1993.Segmentation of seismo-active faults and the potential maximum earthquakemagnitude on the segments[J].Seismology and Geology,15(4):333—340(in Chinese).
何仲太.2007.大青山山前活动断裂的分段地震危险性概率评估[A].见:中国地震局地壳应力研究所编.地壳构造与地壳应力文集(19).北京:地震出版社.35—41.HE Zhong-tai.2007.Occurrence probability of characteristic earthquakes on the segments of Daqingshan piedmont fault[A].I:Institute of Crustal Dynamics,CEA(ed).Crustal Tectonics and Crustal Stress(19).SeismologicalPress,Beijing.35—41(in Chinese).
江娃利,肖振敏,王焕贞,等.2001.内蒙古大青山山前活动断裂带的地震破裂分段特征[J].地震地质,23(1):24—34.JIANG Wa-li,XIAO Zhen-min,WANG Huan-zhen,et al.2001.Segmentation character of seismic surface ruptures ofthe piedmont active fault of Mt.Daqingshan,Inner Mongolia[J].Seismology and Geology,23(1):24—34(inChinese).
李克,吴卫民,杨发,等.1994.大青山山前活动断裂分段性研究[A].见:中国地震学会地震地质专业委员会编.中国活动断层研究.北京:地震出版社.102—113.LI Ke,WU Wei-ming,YANG Fa,et al.1994.A study on segmentation of the Daqingshan frontal active fault[A].In:Committee of Seismogeology,Seismological Society of China(ed).Research on Active Faults in China.Seismological Press,Beijing.102—113(in Chinese).
冉勇康,张培震,陈立春.2003.河套断陷带大青山山前断裂晚第四纪古地震完整性研究[J].地学前缘,10(增):207—216.RAN Yong-kang,ZHANG Pei-zhen,CHENLi-chun.2003.Research on the completeness of paleoseismic activity historysince late Quaternary along the Daqingshan piedmont fault in Hetao Depression Zone,North China[J].EarthScience Frontiers,10(Suppl):207—216(in Chinese).
吴卫民,李克,马保起,等.1995.大青山山前断裂带大型组合探槽的全新世古地震研究[A].见:中国地震局地质研究所编.活动断裂研究(4).北京:地震出版社.123—132.WUWei-ming,LI Ke,MA Bao-qi,et al.1995.Study on Holocene paleoearthquakes in large composite trench on theDaqingshan piedmont fault[A].In:Institute of Geology,CEA(ed).Research on Active Faults(4).SeismologicalPress,Beijing.123—132(in Chinese).
徐锡伟,邓起东.1990.山西霍山山前断裂晚第四纪活动特征和1303年洪洞8级地震[J].地震地质,12(1):21—30.XU Xi-wei,DENG Qi-dong.1990.The features of late Quaternary activity of the piedmont fault of Mt·Huoshan,Shanxiprovince and1303Hongdong earthquake[J].Seismology and Geology,12(1):21—30(in Chinese).
赵孟为.1990.华北克拉通沉积盆地形成与演化及油气赋存[M].兰州:西北大学出版社.146—155.ZHAO Meng-wei.1990.The Formation and Development of the Craton Deposited Basin and Its Oil Storage in NorthChina[M].Northwest University Press,Lanzhou.146—155(in Chinese).
周本刚,张裕明,董瑞树,等.1997.划分潜在震源区的地震地质规则研究[J].中国地震,13(3):241—252.ZHOU Ben-gang,ZHANG Yu-ming,DONG Rui-shu,et at.1997.Study on the geological structural criteria ondetermination of potential earthquake region[J].Earthquake Research in China,13(3):241—252(in Chinese).
Schwartz D P,Coppersmith K J.1984.Fault behavior and characteristic earthquakes:example from the Wasatch andAndreas fault zone[J].J Geophys Res,(69):5681—6698.
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