Hi-net速度微分与KiK-net加速度对比研究
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摘要
首先介绍了日本防灾科学技术研究所Hi-net和KiK-net台网布设情况和数据格式,然后利用Hi-net和KiK-net共同记录到的282次Mj≥5.0、震源深度≤100km的地震,分析了Hi-net速度微分与KiK-net加速度对数峰值比、对数反应谱比的分布特征及其随震级、距离的变化关系,讨论了速度微分结果在幅值和频谱两方面的不确定性.结果表明,数字型速度记录微分与观测加速度无论是峰值还是频谱均存在一定差异,不能将其直接用作加速度.考虑到对数峰值比和对数反应谱比在不同震级档、距离档存在一定规律,因此对速度微分结果的峰值和特定周期的反应谱除以一定的系数,可以降低数字型速度记录数值微分造成的不确定性.另外,也可采用概率的形式描述这种不确定性.
This paper introduces the configuration and data format of Hi-net and KiK-net constructed and operated by National Research Institute for Earth Science and Disaster Prevention of Japan.In order to analyze the uncertainty of velocity differential in both amplitude and spectrum,we study the distribution of natural logarithm of peak acceleration ratio and natural logarithm of acceleration response spectrum ratio between Hi-net velocity differential and KiK-net observed acceleration,as well as the ratios above in relation to magnitude and focal distance,using the data recorded by both Hi-net and KiK-net from 282 Mj≥5.0 earthquakes with focal depth less than 100km.It turns out that the differential of digital velocity record is different from the observed acceleration in both amplitude and spectrum,so the former can not be directly treated as acceleration.Since the distribution of the two ratios mentioned above show some regular pattern,dividing peak acceleration or response spectrum at given period by some coefficient can reduce the uncertainty resulting from numerical differentiation of digital velocity record.Besides,the uncertainty can also be described in the way of probability.
This paper introduces the configuration and data format of Hi-net and KiK-net constructed and operated by National Research Institute for Earth Science and Disaster Prevention of Japan.In order to analyze the uncertainty of velocity differential in both amplitude and spectrum,we study the distribution of natural logarithm of peak acceleration ratio and natural logarithm of acceleration response spectrum ratio between Hi-net velocity differential and KiK-net observed acceleration,as well as the ratios above in relation to magnitude and focal distance,using the data recorded by both Hi-net and KiK-net from 282 Mj≥5.0 earthquakes with focal depth less than 100km.It turns out that the differential of digital velocity record is different from the observed acceleration in both amplitude and spectrum,so the former can not be directly treated as acceleration.Since the distribution of the two ratios mentioned above show some regular pattern,dividing peak acceleration or response spectrum at given period by some coefficient can reduce the uncertainty resulting from numerical differentiation of digital velocity record.Besides,the uncertainty can also be described in the way of probability.
引文
大崎顺彦.1980.田琪.2008.地震动的谱分析入门[M].北京:地震出版社:222--262.
胡聿贤.1999.地震安全性评价技术教程[M].北京:地震出版社:263--274.
金星,马强,李山有.2004.利用数字化速度记录实时仿真位移与加速度时程[J].地震工程与工程震动,24(6):18--30.
谢中华.2010.MATLAB统计分析与应用:40个案例分析[M].北京:北京航空航天大学出版社:163--164.
姚兰予,聂永安,赵靖华,卞真付.2004.利用测震台网记录获得加速度波形的方法研究[J].中国地震,20(1):39--46.
俞瑞芳,俞言祥,肖亮,徐伟进.2008.利用国家数字地震台网记录计算汶川地震余震峰值加速度分布图[J].国际地震动态,(6):4--8.
俞言祥,汪素云,胡聿贤.2002.用数字宽频带速度记录和加速度记录计算长周期反应谱的对比分析[C]∥新世纪地震
工程与防震减灾.北京:地震出版社:566--575.
Aoi S,Kunugi T,Fujiwara H.2004.Strong-motion seismograph network operated by NIED:K-net and KiK-net[J].Journal of Japan Association for Earthquake Engineering,4(3):65--74.
Edwards B,Rietbrock A.2009.A comparative study on attenuation and source-scaling relations in the Kanto,Tokai,and Chubu Regions of Japan,using data from Hi-net and KiK-net[J].Bull Seism Soc Amer,99(4):2435--2460.
Obara K.2003.MethodsandApplicationsofSignalProcessinginSeismicNetworkOperations:Lecture Notes in Earth Sciences[M/OL].98:79--88[2013-02-05].http:∥link.springer.com/chapter/10.1007/BFb0117698.
Okada Y,Kasahara K,Hori S,Obara K,Sekiguchi S,Fujiwara H,Yamamoto A.2004.Recent progress of seismic observation networks in Japan:Hi-net,F-net,K-net and KiK-net[J].Earth Planets Space,56(8):xv--xxviii.
Obara K,Kasahara K,Hori S,Okada Y.2005.A densely distributed high-sensitivity seismograph network in Japan:Hinet by National Research Institute for Earth Science and Disaster Prevention[J].Review of Scientific Instruments,76(2):021301-1--021301-12.
Oth A,Parolai S,Bindi D.2011a.Spectral analysis of K-net and KiK-net data in Japan,PartⅠ:Database compilation and peculiarities[J].Bull Seism Soc Amer,101(2):652--666.
Oth A,Bindi D,Parolai S,Giacomo D D.2011b.Spectral analysis of K-net and KiK-net data in Japan,PartⅡ:On attenuation characteristics,source spectra,and site response of borehole and surface stations[J].Bull Seism Soc Amer,101(2):667--687.
Wald D J,Quitoriano V,Heaton T H,Kanamori H.1999.Relationship between Peak Ground Acceleration,Peak Ground Velocity,and Modified Mercalli Intensity for earthquakes in California[J].Earthquake Spectra,15(3):557--564.
①http:∥www.hinet.bosai.go.jp/
②http:∥www.kyoshin.bosai.go.jp/
①http:∥www.fnet.bosai.go.jp/event/mj.php?LANG=en
胡聿贤.1999.地震安全性评价技术教程[M].北京:地震出版社:263--274.
金星,马强,李山有.2004.利用数字化速度记录实时仿真位移与加速度时程[J].地震工程与工程震动,24(6):18--30.
谢中华.2010.MATLAB统计分析与应用:40个案例分析[M].北京:北京航空航天大学出版社:163--164.
姚兰予,聂永安,赵靖华,卞真付.2004.利用测震台网记录获得加速度波形的方法研究[J].中国地震,20(1):39--46.
俞瑞芳,俞言祥,肖亮,徐伟进.2008.利用国家数字地震台网记录计算汶川地震余震峰值加速度分布图[J].国际地震动态,(6):4--8.
俞言祥,汪素云,胡聿贤.2002.用数字宽频带速度记录和加速度记录计算长周期反应谱的对比分析[C]∥新世纪地震
工程与防震减灾.北京:地震出版社:566--575.
Aoi S,Kunugi T,Fujiwara H.2004.Strong-motion seismograph network operated by NIED:K-net and KiK-net[J].Journal of Japan Association for Earthquake Engineering,4(3):65--74.
Edwards B,Rietbrock A.2009.A comparative study on attenuation and source-scaling relations in the Kanto,Tokai,and Chubu Regions of Japan,using data from Hi-net and KiK-net[J].Bull Seism Soc Amer,99(4):2435--2460.
Obara K.2003.MethodsandApplicationsofSignalProcessinginSeismicNetworkOperations:Lecture Notes in Earth Sciences[M/OL].98:79--88[2013-02-05].http:∥link.springer.com/chapter/10.1007/BFb0117698.
Okada Y,Kasahara K,Hori S,Obara K,Sekiguchi S,Fujiwara H,Yamamoto A.2004.Recent progress of seismic observation networks in Japan:Hi-net,F-net,K-net and KiK-net[J].Earth Planets Space,56(8):xv--xxviii.
Obara K,Kasahara K,Hori S,Okada Y.2005.A densely distributed high-sensitivity seismograph network in Japan:Hinet by National Research Institute for Earth Science and Disaster Prevention[J].Review of Scientific Instruments,76(2):021301-1--021301-12.
Oth A,Parolai S,Bindi D.2011a.Spectral analysis of K-net and KiK-net data in Japan,PartⅠ:Database compilation and peculiarities[J].Bull Seism Soc Amer,101(2):652--666.
Oth A,Bindi D,Parolai S,Giacomo D D.2011b.Spectral analysis of K-net and KiK-net data in Japan,PartⅡ:On attenuation characteristics,source spectra,and site response of borehole and surface stations[J].Bull Seism Soc Amer,101(2):667--687.
Wald D J,Quitoriano V,Heaton T H,Kanamori H.1999.Relationship between Peak Ground Acceleration,Peak Ground Velocity,and Modified Mercalli Intensity for earthquakes in California[J].Earthquake Spectra,15(3):557--564.
①http:∥www.hinet.bosai.go.jp/
②http:∥www.kyoshin.bosai.go.jp/
①http:∥www.fnet.bosai.go.jp/event/mj.php?LANG=en
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