基于现代地震资料确定汾渭地震带分区及其地震活动性参数
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摘要
汾渭地震带是我国东部一个强震活动带,其分段特征及地震活动趋势一直是研究热点,过去利用历史地震和地震地质资料,已得到许多有价值的结果.本文以第五代区划图中最新划分的汾渭地震带为研究区域,收集整理1970至2010年ML2.0～5.0级的现代地震资料,计算中小地震能量密度值,定量分析了该带中小地震空间分布图像特征,据此,确定了汾渭地震带的分区,并给出了各分区的地震活动性参数.对比分析表明,对汾渭地震带进行精细分区,可以更加真实地反映区域的地震活动水平,同一地震带的精细分区,可得到代表不同地震活动水平的地震活动性参数.同时,本研究也为地震带的精细划分提供了一种定量分析方法,对地震区划、工程场地地震安全性评价、地震活动中长期预测均有重要意义.
The seismic section and seismic trends of Fen-wei seismic zone have attracted much attention in the past decades as it is one of the strongest seismic belts in the eastern part of China.Many valuable results can be deanced by using historical strong earthquake record and the seismologic and geological data.Taking the latest partitioned Fen-wei seismic zone from the fifth seismic ground motion parameter zoning map as research region,we calculated the energy density of minor-moderate earthquakes and quantitatively analyzed the space distribution characteristics of these earthquakes in the region from based on the data of ML 2.0～5.0 from 1970 to 2010.Accordingly,the partitions of Fen-wei zone can be exactly divided and the parameters of each partition can be summarized.For the same seismic belt,detailed division gives different parameters representing different seismic activity levels,the subtly division method used in this paper shows better performance in representing actual regional seismicty level of the Fen-wei seismic zone.Meanwhile,this paper also provides a quantitative analysis method of subtly division for seismic belt,It has important value for seismic risk zone、seismic safety assessment and earthquake predication.
The seismic section and seismic trends of Fen-wei seismic zone have attracted much attention in the past decades as it is one of the strongest seismic belts in the eastern part of China.Many valuable results can be deanced by using historical strong earthquake record and the seismologic and geological data.Taking the latest partitioned Fen-wei seismic zone from the fifth seismic ground motion parameter zoning map as research region,we calculated the energy density of minor-moderate earthquakes and quantitatively analyzed the space distribution characteristics of these earthquakes in the region from based on the data of ML 2.0～5.0 from 1970 to 2010.Accordingly,the partitions of Fen-wei zone can be exactly divided and the parameters of each partition can be summarized.For the same seismic belt,detailed division gives different parameters representing different seismic activity levels,the subtly division method used in this paper shows better performance in representing actual regional seismicty level of the Fen-wei seismic zone.Meanwhile,this paper also provides a quantitative analysis method of subtly division for seismic belt,It has important value for seismic risk zone、seismic safety assessment and earthquake predication.
引文
[1]徐锡伟,冉勇康,周本刚,等.张北-尚义地震的地震构造环境与宏观破坏特征.地震地质,1998,20(2):135-145.Xu X W,Ran Y K Zhou B G,Seismotectonics andmacrodamage features of the ZhangBei-Shangyi earthquake.Seismology and geology,1998,20(2):135-145.
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[10]Wiemer S,Wyss M.Minimum magnitude of complete reporting inearthquake catalogs:Examples from Alaska,the WesternUnited States,and Japan.Bull Seism Soc Am,2000,90:859-869.
[11]Rotondi,R.Garavaglia,E.Statistical Analysis of theCompleteness of a Seismic Catalogue.Natural Hazards,2002.25:245-258.
[12]龙锋,闻学泽,倪四道.区域最小完整震级时空分布的确定-以龙门山地震带为例.地震,2009,29(3):27-29.Long F,Wen X Z,Ni S D.Determination of Temporal-spatial Distribution of the Regional Minimum Magnitudes ofCompleteness:Application to the Longmenshan Fault Zone.Earthquake,2009,29(3):27-29.
[13]焦远碧,吴开统,杨满栋.我国地震台网监测能力及台网观测条件质量评定.中国地震,1990,6(4):1-7.Jiao Y B,Wu K T,Yang M D.Evaluation of detectabilityand quality of seismic network in china.Earthquake researchin china,1990,6(4):1-7.
[14]黄玮琼,李文香,曹学锋,等.中国大陆地震资料完整性研究之一-以华北地区为例.地震学报,1994,16(3):273-280.Huang W Q,Shi Z L,Cao X F,et al.Research on thecompleteness of earthquake data in the Chinese mainland(I)-taking the HuaBei region as an example.Acta seismologicasinica,1994,16(3):273-280.
[15]黄玮琼,李文香,曹学锋,等.中国大陆地震资料完整性研究之二-分区地震资料基本完整的起始年分布图象.地震学报,1994,16(4):423-432.Huang W Q,Shi Z L,Cao X F,et al.Research on thecompleteness of earthquake data in the Chinese mainland(Ⅱ)-the image of the basic completely seismic data of zone.Actaseismologica sinica,1994,16(4):423-432.
[16]周公威,张伯明,吴忠良,等.中国数字地震台网(CDSN)的近期发展.地球物理学进展,2007,22(4):1130-1134.ZHOU G W,ZHANG B M,WU Z L,et al.Recentdevelopment in China digital seismograph network(CDSN).Acta seismologica sinica,2007,22(4):1130-1134.
[17]汪素云,时振粱.有感半径与震级的关系及其应用[A].见:国家地震局震害防御司编.中国地震区划文集(1993)[C].北京:地震出版社,1993:179-184.Wang S Y,Shi Z L.The relationship and its applicationbetween the sensible radius and magnitude[A].Edited by theearthquake disaster prevention department of the stateseismological bureau.A corpus of the seismic zonation map ofchina(1993)[C].BeiJing:Earthquake Publish Company,1993:179-184.
[18]蒋长胜,吴忠良.由“重复地震”给出的中国地震台网的定位精度估计.中国地震,2005,21(2):147-154.Jiang C S,Wu Z L.Estimating the location accuracy of thechina national seismograph network using repeating events.Earthquake research in china.2005,21(2):147-154.
[19]王健.地震活动性图象处理的网格点密集值计算方法.地震学报,2001,23(3):262-267.Wang J.Seismic pattern treatment method throughcalcuation of seismic density at grid nodes.Acta seismologicasinica,2005,23(3):262-267.
[20]黄玮琼,时振粱,曹学锋.b值统计中的影响因素及危险性分析中b值的选取.地震学报,1989,11(4):351-361.Huang W Q,Shi Z L,Cao X F.Factors influencing theestimation of b value and the selection of b Value in hazardanalysis.Acta seismologica sinica,1989,11(4):351-361.
[21]鄢家全,韩炜,高孟潭.地震活动性参数的不确定性及其对区划结果的影响.中国地震,1996,12(增刊):71-77.Yan J Q,Han W,Gao M T.Uncertainty of SeismicityParameters and Its Affects to the Seismic Zoning.Earthquakeresearch in china,1996,12(Supplement):71-77.
[22]潘华,李金臣.地震统计区地震活动性参数b值及V4不确定性研究.震灾防御技术,2006,1(3):218-224.Pan H,Li J C.Study on Uncertainties of SeismicityParameters b and V4in Seismic Statistical Zones.Technologyfor Earthquake Disaster Prevention,2006,1(3):218-224.
[23]吴兆营,薄景山,刘志平,等.东北地震区b值和地震年平均发生率的统计分析.东北地震研究,2005,21(3):27-32.Wu Z Y,Bo J S,Liu Z P,et al.Statistical analysis on b Valueand earthquake yearly average occurrence ratio in north eastseismic zone.Seismological research of northeast china,2005,21(3):27-32.
[24]张力方.中强地震区地震活动性参数研究[D].北京:中国地震局地壳应力研究所,2008,20-40.Zhang L F.Study on estimate of seismicity parameters in lowand moderate seismicity region[D].BeiJing:Institute ofcrustal dynamics,china earthquake administration,2008,20-40.
[25]雷建成,高孟潭,等.地震带划分方案对地震活动性参数的影响.地震学报,2010,32(4):457-465.Lei J C,Gao M T,et al.Effects of seismic belt divisionscheme on seismicity parameters.Acta seismologica sinica,2010,32(4):457-465.
[26]陈培善,白彤霞,李保昆.b值和地震复发周期.地球物理学报,2003,46(4):510-519.Chen P S,Bai T X,Li B K.b-Value and earthquakeoccurrence period.Chinese Journal of Geophysics,2003,32(4):457-465.
[27]张立承.台湾地区b值特征分析[D].台湾:国立成功大学,2008,10-15.Zhang L C.b Values of earthquakes in Taiwan[D].TaiWan:National cheng kung university,2008,10-15.
[28]Wyss M,Sammis c G,,Nadeau R M,et al.Fractal dimensionand b value on creeping and locked patches of the Sanandreasfault near Parfield California.bullseism.Soc.Am.,2004,94(2):410-421.
[29]易桂喜,闻学泽,苏有锦.川滇活动地块东边界强震危险性研究.地球物理学报,2008,51(6):1719-1725.Yi G X,Wen X Z,Su Y J.Study on the potential strongearthquake risk for the eastern boundary of the Sichuan-Yunnan active faulted block,Chinese Journal of Geophysics,2008,51(6):1719-1725.
[2]张世民,刘光勋.山西及邻区新构造运动分区及其特征概述[A].见:马宗晋主编.山西临汾地震研究与系统减灾(1993)[C].北京:地震出版社,1993,23-30.Zhang S M,Liu G X..Summary of the new divisions tectonicmovement and the charactertics in ShanXi Province and itsneighboring area[A].Edited by Ma Z J.The research anddisaster mitigation on earthquake of Shanxi Linfen(1993)[C].BeiJing:Earthquake Publish Company,1993,23-30.
[3]董瑞树,冉洪流,等.临汾盆地地震危险性浅析.山西地震,1995,3、4:119-123.Dong R S,Ran H L,et.al.Analysis of seismic risk of LinFenbasin.Earthquake research in ShanXi,1995,3、4:119-123.
[4]苏怡之,王进英.汾渭地震带的地震活动性.内陆地震,1992,6(2):143-150.Su Y Z,Wang J Y,Seismic activity on the Fen-Wen Seismiczone.Inland earthquake,1992,6(2):143-150.
[5]国家地震局震害防御司编.中国历史强震目录(公元前23世纪-公元1911年)[M].北京:地震出版社,1995.The earthquake disaster prevention department of the stateseismological bureau,The new catalogue of chinese historicalstrong earthquakes from the 23rd century B.C.to 1911AD[M].BeiJing:Earthquake Publish Company,1995.
[6]中国地震局震害防御司编.中国近代地震目录(公元1912年-1990年MS≥4.7)[M].北京:中国科学技术出版社,1999.The earthquake disaster prevention department of the stateseismological bureau,The new catalogue of chinese historicalstrong earthquakes from 1912to 1990AD[M].BeiJing:ChinaScience and Technology Press,1999.
[7]王健.渤海海域历史地震和海啸.地震学报,2007,29(5):549-557.Wang J.Historical earthquakes and a tsunami In Bohai Sea.Acta seismologica sinica,2007,29(5):549-557.
[8]吕悦军.渤海海域地震区划研究[D].北京:中国地质大学,2008,11-16.Lu Y J.A study on seismic zonation of Bohai Sea[D].BeiJing:China university of geosciences,2008,11-16.
[9]张力方,吕悦军,彭艳菊,谢卓娟.基于中小地震应变能释放图像的地震活动性图像分析.中国地震,2008,24(4):407-414.Zhang L F,Lu Y J,Peng Y J,Xie Z J.Analysis ofseismological energy density of minor-moderate.Earthquakeresearch in china,2008,24(4):407-414.
[10]Wiemer S,Wyss M.Minimum magnitude of complete reporting inearthquake catalogs:Examples from Alaska,the WesternUnited States,and Japan.Bull Seism Soc Am,2000,90:859-869.
[11]Rotondi,R.Garavaglia,E.Statistical Analysis of theCompleteness of a Seismic Catalogue.Natural Hazards,2002.25:245-258.
[12]龙锋,闻学泽,倪四道.区域最小完整震级时空分布的确定-以龙门山地震带为例.地震,2009,29(3):27-29.Long F,Wen X Z,Ni S D.Determination of Temporal-spatial Distribution of the Regional Minimum Magnitudes ofCompleteness:Application to the Longmenshan Fault Zone.Earthquake,2009,29(3):27-29.
[13]焦远碧,吴开统,杨满栋.我国地震台网监测能力及台网观测条件质量评定.中国地震,1990,6(4):1-7.Jiao Y B,Wu K T,Yang M D.Evaluation of detectabilityand quality of seismic network in china.Earthquake researchin china,1990,6(4):1-7.
[14]黄玮琼,李文香,曹学锋,等.中国大陆地震资料完整性研究之一-以华北地区为例.地震学报,1994,16(3):273-280.Huang W Q,Shi Z L,Cao X F,et al.Research on thecompleteness of earthquake data in the Chinese mainland(I)-taking the HuaBei region as an example.Acta seismologicasinica,1994,16(3):273-280.
[15]黄玮琼,李文香,曹学锋,等.中国大陆地震资料完整性研究之二-分区地震资料基本完整的起始年分布图象.地震学报,1994,16(4):423-432.Huang W Q,Shi Z L,Cao X F,et al.Research on thecompleteness of earthquake data in the Chinese mainland(Ⅱ)-the image of the basic completely seismic data of zone.Actaseismologica sinica,1994,16(4):423-432.
[16]周公威,张伯明,吴忠良,等.中国数字地震台网(CDSN)的近期发展.地球物理学进展,2007,22(4):1130-1134.ZHOU G W,ZHANG B M,WU Z L,et al.Recentdevelopment in China digital seismograph network(CDSN).Acta seismologica sinica,2007,22(4):1130-1134.
[17]汪素云,时振粱.有感半径与震级的关系及其应用[A].见:国家地震局震害防御司编.中国地震区划文集(1993)[C].北京:地震出版社,1993:179-184.Wang S Y,Shi Z L.The relationship and its applicationbetween the sensible radius and magnitude[A].Edited by theearthquake disaster prevention department of the stateseismological bureau.A corpus of the seismic zonation map ofchina(1993)[C].BeiJing:Earthquake Publish Company,1993:179-184.
[18]蒋长胜,吴忠良.由“重复地震”给出的中国地震台网的定位精度估计.中国地震,2005,21(2):147-154.Jiang C S,Wu Z L.Estimating the location accuracy of thechina national seismograph network using repeating events.Earthquake research in china.2005,21(2):147-154.
[19]王健.地震活动性图象处理的网格点密集值计算方法.地震学报,2001,23(3):262-267.Wang J.Seismic pattern treatment method throughcalcuation of seismic density at grid nodes.Acta seismologicasinica,2005,23(3):262-267.
[20]黄玮琼,时振粱,曹学锋.b值统计中的影响因素及危险性分析中b值的选取.地震学报,1989,11(4):351-361.Huang W Q,Shi Z L,Cao X F.Factors influencing theestimation of b value and the selection of b Value in hazardanalysis.Acta seismologica sinica,1989,11(4):351-361.
[21]鄢家全,韩炜,高孟潭.地震活动性参数的不确定性及其对区划结果的影响.中国地震,1996,12(增刊):71-77.Yan J Q,Han W,Gao M T.Uncertainty of SeismicityParameters and Its Affects to the Seismic Zoning.Earthquakeresearch in china,1996,12(Supplement):71-77.
[22]潘华,李金臣.地震统计区地震活动性参数b值及V4不确定性研究.震灾防御技术,2006,1(3):218-224.Pan H,Li J C.Study on Uncertainties of SeismicityParameters b and V4in Seismic Statistical Zones.Technologyfor Earthquake Disaster Prevention,2006,1(3):218-224.
[23]吴兆营,薄景山,刘志平,等.东北地震区b值和地震年平均发生率的统计分析.东北地震研究,2005,21(3):27-32.Wu Z Y,Bo J S,Liu Z P,et al.Statistical analysis on b Valueand earthquake yearly average occurrence ratio in north eastseismic zone.Seismological research of northeast china,2005,21(3):27-32.
[24]张力方.中强地震区地震活动性参数研究[D].北京:中国地震局地壳应力研究所,2008,20-40.Zhang L F.Study on estimate of seismicity parameters in lowand moderate seismicity region[D].BeiJing:Institute ofcrustal dynamics,china earthquake administration,2008,20-40.
[25]雷建成,高孟潭,等.地震带划分方案对地震活动性参数的影响.地震学报,2010,32(4):457-465.Lei J C,Gao M T,et al.Effects of seismic belt divisionscheme on seismicity parameters.Acta seismologica sinica,2010,32(4):457-465.
[26]陈培善,白彤霞,李保昆.b值和地震复发周期.地球物理学报,2003,46(4):510-519.Chen P S,Bai T X,Li B K.b-Value and earthquakeoccurrence period.Chinese Journal of Geophysics,2003,32(4):457-465.
[27]张立承.台湾地区b值特征分析[D].台湾:国立成功大学,2008,10-15.Zhang L C.b Values of earthquakes in Taiwan[D].TaiWan:National cheng kung university,2008,10-15.
[28]Wyss M,Sammis c G,,Nadeau R M,et al.Fractal dimensionand b value on creeping and locked patches of the Sanandreasfault near Parfield California.bullseism.Soc.Am.,2004,94(2):410-421.
[29]易桂喜,闻学泽,苏有锦.川滇活动地块东边界强震危险性研究.地球物理学报,2008,51(6):1719-1725.Yi G X,Wen X Z,Su Y J.Study on the potential strongearthquake risk for the eastern boundary of the Sichuan-Yunnan active faulted block,Chinese Journal of Geophysics,2008,51(6):1719-1725.
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