北京地震台gPhone重力仪同震响应特征分析
|
摘要
地震的同震响应包含了地震破裂及传播过程中的大部分信息,因此可用这些同震信息对地震震源的一些参数进行估计。2014年9~12月,马鲁古海发生5次M_S6.1~7.1强震,北京地震台的gPhone重力仪均有同震响应。本文从首波初至、地震频带响应、地震面波、同震变形幅度、同震持续时间等方面分析了重力仪的同震响应特征,并与STS-2宽频带地震计进行了波形对比分析。结果表明,相对于宽频带地震计,gPhone重力仪亦能提供丰富的由地震引起的地面运动信息,其首波初至、地震频带响应等与宽频带地震计有高度相似,且gPhone重力仪对长周期地震面波的响应很好,表现出其独有的特性。
5 strong earthquakes with M_S6.1 ~ 7.1 occurred in the Molukka Sea,during the period of September ~ December,2014,and there were co-seismic responses of the g Phone gravimeter at the Beijing seismic station. In this paper,we study the characteristics of co-seismic response in 4aspects: head wave,response of seismic band,deformation range,and co-seismic duration. In addition,the g Phone gravimeter response is compared with that of the STS-2 broadband seismometer. The results show that compared with the broadband seismometer,the g Phone gravimeter can also provide rich information of ground motion caused by the earthquake,and has its own characteristics.
5 strong earthquakes with M_S6.1 ~ 7.1 occurred in the Molukka Sea,during the period of September ~ December,2014,and there were co-seismic responses of the g Phone gravimeter at the Beijing seismic station. In this paper,we study the characteristics of co-seismic response in 4aspects: head wave,response of seismic band,deformation range,and co-seismic duration. In addition,the g Phone gravimeter response is compared with that of the STS-2 broadband seismometer. The results show that compared with the broadband seismometer,the g Phone gravimeter can also provide rich information of ground motion caused by the earthquake,and has its own characteristics.
引文
陈德福、苏恺之、耿士昌,1995,地震地形变观测技术,北京:地震出版社。
陈大庆、万永芳、赵明利,2007,北京良乡、赵各庄井水位、水温同震响应对比研究,华南地震,27(2),69-75。
付虹、邬成栋、刘强等,2007,印尼巨大远震引起的云南水位异常记录及其意义,地震地质,29(4),873-882。
刘洪斌、尹亮、李东生等,2012,甘肃高台分量式应变前驱波的特征分析,西北地震学报,34(3),299-238。
牛安福、张晶、吉平等,2005,强地震引起的同震形变响应,内陆地震,19(1),1-7。
牛安福、吉平、高福旺等,2006,印尼强地震引起的同震形变波,地震,26(1),131-137。
蒋骏、张雁滨、林钢等,2012,固体潮观测中的震颤异常波,地球物理学报,55(2),462-471。
荆燕、张世中、李宏等,2007,断层垂直形变对强远震的响应,地震学报,29(2),165-172。
刘端法、刘克人、郑金涵等,2004,1997-2003白家疃地震台记录的重力变化,地球物理学进展,19(4),883-886。
孙毅、程万正,2005,特大远震引起的形变观测变化图像,内陆地震,19(3),264-270。
王林松、陈超、梁青等,2012,东日本大地震重力信号同震响应,武汉大学学报(信息科学版),37(11),1348-1351。
韦进、刘子维、郝洪涛等,2011,日本M_s9.0地震前的连续重力观测异常,大地测量与地球动力学,31(2),9-16。
韦进、刘高川、李辉等,2012,弹簧式连续重力观测非线性漂移影响因素分析,大地测量与地球动力学,32(5),137-142。
万永革,2007,数字信号处理的MATLAB实现,北京:科学出版社。
杨婕、刘水莲、卓群等,2011,台湾花莲海域强震的同震响应特征,华北地震科学,29(3),39-43。
张晶、牛安福、高福旺等,2003,数字化形变观测提取的地震短临异常特征,地震,23(1),70-76。
周磊、申重阳、韦进等,2013,gPhone重力仪记录的汶川8.0地震高频信号研究,大地测量与地球动力学,33,增刊(I),16-19。
张雁滨、蒋骏、廖盈春等,2008,宽频地震计及倾斜、重力仪对长周期波动信号的综合观测,地震学报,30(6),626-633。
Benioff H Press F,Smith S,1961,Excitation of the free oscillations of the earth by earthquake J Geophys Res,66(2),605-619.
Neumeyer J,Bathelmes F,Combrinck L,et al 2002 Analysis results from the SG registration with the dual sphere superconducting gravimeter at SAGOS(South Africa),Bull Dlnfor Marees Ter-restres,135,10607-10616.
Riccardi U,Rosat S,Hinderer J,2011,Comparison of the Micro-g LaCoste gPhone-054 spring gravimeter and the GWR-C026superconducting gravimeter in Strasbourg(France)using a 300-day time Series,Metrologia,48(1),28-39.
Roult G,Romanowicz B Jobert N,1986,Observations of departures from classical approximations on very long period GEOSCOPE records,Annales Geophysicae,4,241-249.
Van Camp M,1999,Measuring seismic normal modes with the GWR C021 superconducting gravimeter,Phys Earth and Plan Int,116,81-92.
陈大庆、万永芳、赵明利,2007,北京良乡、赵各庄井水位、水温同震响应对比研究,华南地震,27(2),69-75。
付虹、邬成栋、刘强等,2007,印尼巨大远震引起的云南水位异常记录及其意义,地震地质,29(4),873-882。
刘洪斌、尹亮、李东生等,2012,甘肃高台分量式应变前驱波的特征分析,西北地震学报,34(3),299-238。
牛安福、张晶、吉平等,2005,强地震引起的同震形变响应,内陆地震,19(1),1-7。
牛安福、吉平、高福旺等,2006,印尼强地震引起的同震形变波,地震,26(1),131-137。
蒋骏、张雁滨、林钢等,2012,固体潮观测中的震颤异常波,地球物理学报,55(2),462-471。
荆燕、张世中、李宏等,2007,断层垂直形变对强远震的响应,地震学报,29(2),165-172。
刘端法、刘克人、郑金涵等,2004,1997-2003白家疃地震台记录的重力变化,地球物理学进展,19(4),883-886。
孙毅、程万正,2005,特大远震引起的形变观测变化图像,内陆地震,19(3),264-270。
王林松、陈超、梁青等,2012,东日本大地震重力信号同震响应,武汉大学学报(信息科学版),37(11),1348-1351。
韦进、刘子维、郝洪涛等,2011,日本M_s9.0地震前的连续重力观测异常,大地测量与地球动力学,31(2),9-16。
韦进、刘高川、李辉等,2012,弹簧式连续重力观测非线性漂移影响因素分析,大地测量与地球动力学,32(5),137-142。
万永革,2007,数字信号处理的MATLAB实现,北京:科学出版社。
杨婕、刘水莲、卓群等,2011,台湾花莲海域强震的同震响应特征,华北地震科学,29(3),39-43。
张晶、牛安福、高福旺等,2003,数字化形变观测提取的地震短临异常特征,地震,23(1),70-76。
周磊、申重阳、韦进等,2013,gPhone重力仪记录的汶川8.0地震高频信号研究,大地测量与地球动力学,33,增刊(I),16-19。
张雁滨、蒋骏、廖盈春等,2008,宽频地震计及倾斜、重力仪对长周期波动信号的综合观测,地震学报,30(6),626-633。
Benioff H Press F,Smith S,1961,Excitation of the free oscillations of the earth by earthquake J Geophys Res,66(2),605-619.
Neumeyer J,Bathelmes F,Combrinck L,et al 2002 Analysis results from the SG registration with the dual sphere superconducting gravimeter at SAGOS(South Africa),Bull Dlnfor Marees Ter-restres,135,10607-10616.
Riccardi U,Rosat S,Hinderer J,2011,Comparison of the Micro-g LaCoste gPhone-054 spring gravimeter and the GWR-C026superconducting gravimeter in Strasbourg(France)using a 300-day time Series,Metrologia,48(1),28-39.
Roult G,Romanowicz B Jobert N,1986,Observations of departures from classical approximations on very long period GEOSCOPE records,Annales Geophysicae,4,241-249.
Van Camp M,1999,Measuring seismic normal modes with the GWR C021 superconducting gravimeter,Phys Earth and Plan Int,116,81-92.