2010年玉树7.1级地震序列时空演化特征及早期趋势判断
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摘要
本文利用青海地震台网获得的观测资料对玉树地震序列的时空演化特征进行分析和研究,结果认为Mc选取ML1.1能较好的刻画玉树地震序列的时空特征,其地震序列在时间上呈现三个密集和衰减阶段,在空间上具有分段集中分布的特征,并主要分布在主震震中的西北端、主震震中附近和主震震中东南端。采用类比、b值和h值等探讨了早期趋势判定问题。
Temporal and spatial evolution characteristics of the 2010 Yushu M7.1 earthquake sequence have been analyzed and researched with data obtained by the Qinghai Earthquake Observation Network.The result suggests that selection of Mc=ML1.1 can better characterize the spatial and temporal characteristics of Yushu earthquake sequence.Yushu earthquake sequence shows 3 intensification and decay phases in time,and in space has a sectional concentration distribution characteristics,and mainly in the northwest of,near and the southeast of mainshock epicenter.The question of early tendency judgement of the Yushu M7.1 earthquake also has been discussed by analogy method,b value and H value.
Temporal and spatial evolution characteristics of the 2010 Yushu M7.1 earthquake sequence have been analyzed and researched with data obtained by the Qinghai Earthquake Observation Network.The result suggests that selection of Mc=ML1.1 can better characterize the spatial and temporal characteristics of Yushu earthquake sequence.Yushu earthquake sequence shows 3 intensification and decay phases in time,and in space has a sectional concentration distribution characteristics,and mainly in the northwest of,near and the southeast of mainshock epicenter.The question of early tendency judgement of the Yushu M7.1 earthquake also has been discussed by analogy method,b value and H value.
引文
[1]谷继成,谢小碧,赵莉.强余震的空间分布特征及其理论解释[J].地震学报,1982,4(4):380-388.
[2]谷继成,谢小碧,赵莉.强余震的时间分布特征及其理论解释[J].地球物理学报,1979,22(1):32-46.
[3]蒋海昆,黎明晓,吴琼,等.汶川8.0级地震序列及相关问题讨论[J].地震地质,2008,30(3):746-758.
[4]陈玉华,马文静,张瑞斌.青海及邻区中强地震序列类型及特征研究[J].西北地震学报,2001,23(3):250-256.
[5]张勇,许力生,陈运泰.2010年4月14日青海玉树地震破裂过程快速反演[J].地震学报,2010,32(3):361-365.
[6]Wiemer S,Wyss M.Minimum Magnitude of Completeness in Earthquake catalogs:Examples fromAlaska,the Western United States,and Japan[J].Bulletin of the Seismological Society of America,2000,90(4):859-869.
[7]Woessner J,Hauksson E,Wiemer S.Assessing the quality of earthquake catalogues:Estimating themagnitude of completeness and its uncertainty[J].Bulletin of the Seismological Society of America,2005,95(2):684-698.
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[9]蒋长胜,吴忠良,李宇彤.首都圈地区“重复地震事件”及其在区域地震台网定位精度评价中的应用[J].地球物理学报,2008,51(3):817-827.
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[11]韩立波,蒋长胜,李艳娥,等.用于地震可预测性CSEP计划的南北地震带地区地震最小完整性震级MC研究[J].地震,2012,32(1):17-27.
[12]蒋海昆,曲延军,李永莉,等.中国大陆中强地震余震序列的部分统计特征[J].地球物理学报,2006,49(4):1 110-1 117.
[13]蒋海昆,李永莉,曲延军,等.中国大陆中强地震序列类型空间分布特征[J].地震学报,2006,28(4):389-398.
[14]蒋海昆,代磊,侯海峰,等.余震序列性质判定单参数判据的统计研究[J].地震,2006,26(3):17-25.
[15]吴开统,焦远碧,吕培苓,等.地震序列概论[M].北京:北京大学出版社,1990.
①http://www.cea.gov.cn/manage/html/8a8587881632fa5c0116674a018300cf/_content/10_04/14/1271249752875.html
①http://www.cea.gov.cn/manage/html/8a8587881632fa5c0116674a018300cf/_content/10_04/14/1271249752875.html
[2]谷继成,谢小碧,赵莉.强余震的时间分布特征及其理论解释[J].地球物理学报,1979,22(1):32-46.
[3]蒋海昆,黎明晓,吴琼,等.汶川8.0级地震序列及相关问题讨论[J].地震地质,2008,30(3):746-758.
[4]陈玉华,马文静,张瑞斌.青海及邻区中强地震序列类型及特征研究[J].西北地震学报,2001,23(3):250-256.
[5]张勇,许力生,陈运泰.2010年4月14日青海玉树地震破裂过程快速反演[J].地震学报,2010,32(3):361-365.
[6]Wiemer S,Wyss M.Minimum Magnitude of Completeness in Earthquake catalogs:Examples fromAlaska,the Western United States,and Japan[J].Bulletin of the Seismological Society of America,2000,90(4):859-869.
[7]Woessner J,Hauksson E,Wiemer S.Assessing the quality of earthquake catalogues:Estimating themagnitude of completeness and its uncertainty[J].Bulletin of the Seismological Society of America,2005,95(2):684-698.
[8]中国地震局监测预报司.汶川8.0级地震科学研究报告[M].北京:地震出版社,2009.
[9]蒋长胜,吴忠良,李宇彤.首都圈地区“重复地震事件”及其在区域地震台网定位精度评价中的应用[J].地球物理学报,2008,51(3):817-827.
[10]中国地震局监测预报司.汶川8.0级地震科学研究报告[M].北京:地震出版社,2009.135-137.
[11]韩立波,蒋长胜,李艳娥,等.用于地震可预测性CSEP计划的南北地震带地区地震最小完整性震级MC研究[J].地震,2012,32(1):17-27.
[12]蒋海昆,曲延军,李永莉,等.中国大陆中强地震余震序列的部分统计特征[J].地球物理学报,2006,49(4):1 110-1 117.
[13]蒋海昆,李永莉,曲延军,等.中国大陆中强地震序列类型空间分布特征[J].地震学报,2006,28(4):389-398.
[14]蒋海昆,代磊,侯海峰,等.余震序列性质判定单参数判据的统计研究[J].地震,2006,26(3):17-25.
[15]吴开统,焦远碧,吕培苓,等.地震序列概论[M].北京:北京大学出版社,1990.
①http://www.cea.gov.cn/manage/html/8a8587881632fa5c0116674a018300cf/_content/10_04/14/1271249752875.html
①http://www.cea.gov.cn/manage/html/8a8587881632fa5c0116674a018300cf/_content/10_04/14/1271249752875.html
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