地震带划分方案对地震活动性参数的影响
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摘要
根据四川及邻区的地震构造背景、地震活动特征等,相对于《中国地震动参数区划图(2001)》采用的大尺度地震带划分方案("大带方案"),在较小尺度上划分出了川滇块体地震带、甘南川北地震带、四川盆地地震带("小带方案").采用相同的原则和方法,分别统计得出了"大带方案"、"小带方案"的地震活动性参数.对比分析表明,在同一地区,不同的地震带划分方案将得到代表不同地震活动水平的地震活动性参数.大尺度地震带划分方案很可能低估高震级档地震的年发生率.采用小尺度的地震带划分方案,可以更加真实地反映区域的地震活动的水平,较好体现控制建筑物抗倒塌的地震作用的水平,有利于编制更为真实、安全的抗倒塌区划图.
Comparing with the large spatial scale seismic belt division scheme (large-belt scheme) adopted by Seismic Ground Motion Parameter Zonation Map of China,2001,a small scale seismic belt division scheme (small-belt scheme) is worked out based on tectonic background and seismic activity in Sichuan and adjacent areas.The small-belt scheme includes Sichuan-Yunnan-block-area belt (SYBAB),Southern Ganshu-Northern Sichuan belt (SGNSB) and Sichuan Basin belt (SBB).With the same deduction approach,the seismicity parameters are determined from the small-belt and large-belt scheme,respectively.Result of a comparison study indicates that,for a specific area,different division schemes result in different seismicity parameters,presenting different seismic activity levels.The large-belt scheme may underestimate annual occurrence rate of large earthquakes,while the small-belt scheme shows better performance in representing actual regional seismicity level and possible earthquake action for anti-collapse design of buildings.The small-belt scheme would be more acceptable in compiling a feasible and safe anti-collapse zonation map.
Comparing with the large spatial scale seismic belt division scheme (large-belt scheme) adopted by Seismic Ground Motion Parameter Zonation Map of China,2001,a small scale seismic belt division scheme (small-belt scheme) is worked out based on tectonic background and seismic activity in Sichuan and adjacent areas.The small-belt scheme includes Sichuan-Yunnan-block-area belt (SYBAB),Southern Ganshu-Northern Sichuan belt (SGNSB) and Sichuan Basin belt (SBB).With the same deduction approach,the seismicity parameters are determined from the small-belt and large-belt scheme,respectively.Result of a comparison study indicates that,for a specific area,different division schemes result in different seismicity parameters,presenting different seismic activity levels.The large-belt scheme may underestimate annual occurrence rate of large earthquakes,while the small-belt scheme shows better performance in representing actual regional seismicity level and possible earthquake action for anti-collapse design of buildings.The small-belt scheme would be more acceptable in compiling a feasible and safe anti-collapse zonation map.
引文
高孟潭.1988.关于地震年平均发生率的探讨[J].国际地震动态,(1):1--5.
高孟潭.2003.新的中国地震区划图[J].地震学报,25(6):630--636.
高孟潭,卢寿德.2006.关于下一代地震区划图编图原则与关键技术的初步探讨[J].震灾防御技术,1(1):1--6.
国家地震局.1981.中国地震烈度区划报告[M].北京:地震出版社:5--6.
国家地震局.1996.中国地震烈度图(1990)概论[M].北京:地震出版社:11--16,64--88.
胡聿贤,高孟潭,杜玮,金严,赵凤新,邹其嘉,陶裕录,周本刚.2001.GB18306-2001《中国地震动参数区划图》宣贯教材[M].北京:中国标准出版社:1--15,36--39.
黄玮琼,时振梁,曹学锋.1989.b值统计中的影响因素及危险性分析中b值的选取[J].地震学报,11(4):351--361.
李善邦.1957.中国地震烈度区域划分图说明[J].地球物理学报,6(2):127--158.
沈建文,余湛,邱瑛.2007.地震安评中地震活动性的统计区域与b值[J].国际地震动态,(3):1--6.
时振梁,李裕澈.2001.中国地震区划[J].中国工程科学,3(6):65--68.
时振梁,鄢家全,高孟潭.1991.地震区划原则和方法研究:以华北地区为例[J].地震学报,13(4):179--189.
徐锡伟,张培震,闻学泽,秦尊丽,陈桂华,朱艾斓.2005.川西及其邻近地区地震活动构造基本特征与强震复发模型[J].地震地质.27(3):446--461.
徐锡伟,闻学泽,叶建青,马宝起,陈杰,周荣军,何宏林,田勤俭,何玉林,王志才,孙昭民,冯希杰,于贵华,陈立春,陈桂华,于慎鄂,冉勇康,李细光,李陈侠,安艳芬.2008.汶川MS8.0地震地表破裂带及其发震构造[J].地震地质,30(3):597--629.
鄢家全.2005.地震危险性分析的困惑与希望[J].国际地震动态,(6):14--24.
张国民,马宏生,王辉,王新岭.2005.中国大陆活动地块边界带与强震活动[J].地球物理学报.48(3):602--610.
张力方,吕悦军,彭艳菊,谢卓娟.2008.用空间光滑方法评估弱地震活动区的地震活动性参数[J].震灾防御技术,3(1):27--36.
Algermissen S T,Perkins D M.1976.Aprobabilistic esti mate of maxi mumaccelerationin rockin the contiguous UnitedStates[R].U S Geol Surv Open-File Report:76--416:1--45.
Basham P W,Weichert D H,Anglin F M,Berry MJ.1985.Newprobabilistic strong seismic ground motion map of Can-ada[J].Bull Seism Soc Amer,75(2):563--595.
Cornell C A.1968.Engineering seismic risk analysis[J].Bull Seism Soc Amer,58(5):1583--1606.
Field E H.2007.A summary of previous working groups on California earthquake probabilities[J].Bull Seism SocAmer,97(4):1033--1053.
Petersen M D,Frankel A D,Harmsen S C,Mueller C S,Haller K M,Wheeler R L,Wesson R L,Zeng Y H,Boyd OS,Perkins D M,Luco N,Field E H,Wills C J,Rukstales K S.2008.Documentation for the2008update of theUnited States National Seismic Hazard Maps[R].U S Depart ment ofthe Interior and U S Geol Surv Open-File Re-port2008-1128:4--6.
Wesnousky S G,Scholz C H,Shi mazaki K,Matsuda T.1984.Integration of geological and seismological data for theanalysis of seismic hazard:Case study of Japan[J].Bull Seism Soc Amer,74(2):687--708.
Working Group on California Earthquake Probabilties.2003.Earthquake probabilities in the San Francisco Bay Region2002-2031[R].U S Geol Surv Open-File Report03-214,chapter5:1--21.
高孟潭.2003.新的中国地震区划图[J].地震学报,25(6):630--636.
高孟潭,卢寿德.2006.关于下一代地震区划图编图原则与关键技术的初步探讨[J].震灾防御技术,1(1):1--6.
国家地震局.1981.中国地震烈度区划报告[M].北京:地震出版社:5--6.
国家地震局.1996.中国地震烈度图(1990)概论[M].北京:地震出版社:11--16,64--88.
胡聿贤,高孟潭,杜玮,金严,赵凤新,邹其嘉,陶裕录,周本刚.2001.GB18306-2001《中国地震动参数区划图》宣贯教材[M].北京:中国标准出版社:1--15,36--39.
黄玮琼,时振梁,曹学锋.1989.b值统计中的影响因素及危险性分析中b值的选取[J].地震学报,11(4):351--361.
李善邦.1957.中国地震烈度区域划分图说明[J].地球物理学报,6(2):127--158.
沈建文,余湛,邱瑛.2007.地震安评中地震活动性的统计区域与b值[J].国际地震动态,(3):1--6.
时振梁,李裕澈.2001.中国地震区划[J].中国工程科学,3(6):65--68.
时振梁,鄢家全,高孟潭.1991.地震区划原则和方法研究:以华北地区为例[J].地震学报,13(4):179--189.
徐锡伟,张培震,闻学泽,秦尊丽,陈桂华,朱艾斓.2005.川西及其邻近地区地震活动构造基本特征与强震复发模型[J].地震地质.27(3):446--461.
徐锡伟,闻学泽,叶建青,马宝起,陈杰,周荣军,何宏林,田勤俭,何玉林,王志才,孙昭民,冯希杰,于贵华,陈立春,陈桂华,于慎鄂,冉勇康,李细光,李陈侠,安艳芬.2008.汶川MS8.0地震地表破裂带及其发震构造[J].地震地质,30(3):597--629.
鄢家全.2005.地震危险性分析的困惑与希望[J].国际地震动态,(6):14--24.
张国民,马宏生,王辉,王新岭.2005.中国大陆活动地块边界带与强震活动[J].地球物理学报.48(3):602--610.
张力方,吕悦军,彭艳菊,谢卓娟.2008.用空间光滑方法评估弱地震活动区的地震活动性参数[J].震灾防御技术,3(1):27--36.
Algermissen S T,Perkins D M.1976.Aprobabilistic esti mate of maxi mumaccelerationin rockin the contiguous UnitedStates[R].U S Geol Surv Open-File Report:76--416:1--45.
Basham P W,Weichert D H,Anglin F M,Berry MJ.1985.Newprobabilistic strong seismic ground motion map of Can-ada[J].Bull Seism Soc Amer,75(2):563--595.
Cornell C A.1968.Engineering seismic risk analysis[J].Bull Seism Soc Amer,58(5):1583--1606.
Field E H.2007.A summary of previous working groups on California earthquake probabilities[J].Bull Seism SocAmer,97(4):1033--1053.
Petersen M D,Frankel A D,Harmsen S C,Mueller C S,Haller K M,Wheeler R L,Wesson R L,Zeng Y H,Boyd OS,Perkins D M,Luco N,Field E H,Wills C J,Rukstales K S.2008.Documentation for the2008update of theUnited States National Seismic Hazard Maps[R].U S Depart ment ofthe Interior and U S Geol Surv Open-File Re-port2008-1128:4--6.
Wesnousky S G,Scholz C H,Shi mazaki K,Matsuda T.1984.Integration of geological and seismological data for theanalysis of seismic hazard:Case study of Japan[J].Bull Seism Soc Amer,74(2):687--708.
Working Group on California Earthquake Probabilties.2003.Earthquake probabilities in the San Francisco Bay Region2002-2031[R].U S Geol Surv Open-File Report03-214,chapter5:1--21.
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