基于高频GPS位移时序的芦山地震特性分析
|
摘要
通过解算芦山地震周边20个CORS站的10 Hz数据,分析震时地表形变特征,探索水平位移峰值衰减规律并反演面波震级。结果表明:所有测站都产生了不同程度的震动,震动位移均为厘米级,震中距较小的QLAI、SCTQ和YAAN站受地震影响最大,水平位移峰值在50 mm左右,其他测站水平位移峰值在18~28 mm范围内。高频GPS测定的水平位移峰值与震中距呈指数关系衰减。利用Gutenberg经验回归公式反演面波震级,结果为6.78,所用最短时间为震后142 s。
10 Hz global positioning system( GPS) observations of 20 continual operation reference system(CORS) sites nearby Lushan are used to analyze the ground moving characteristics,research the relationship between peak horizontal displacement( PHD) and estimate the magnitude. The results show all sites have had ground moving with centimeter-level,QLAI,SCTQ and YAAN sites are mainly affected by earthquake,PHD can reach approximately 50 mm,other sites are within 18 ~ 28 mm. The scaling relationship between PHD from GPS observations show that PHD amplitudes decay approximately with r- 1. 66,where r is the epicentral distances of GPS sites.Magnitude inversion by the empirical relationship that Gutenberg deduced in 1945 show the result of Lushan earthquake is 6. 78,and the shortest time to get the robust value is 142 s,which indicate that a robust magnitude can be estimated within a few minutes after an earthquake event by using high-rate GPS.
10 Hz global positioning system( GPS) observations of 20 continual operation reference system(CORS) sites nearby Lushan are used to analyze the ground moving characteristics,research the relationship between peak horizontal displacement( PHD) and estimate the magnitude. The results show all sites have had ground moving with centimeter-level,QLAI,SCTQ and YAAN sites are mainly affected by earthquake,PHD can reach approximately 50 mm,other sites are within 18 ~ 28 mm. The scaling relationship between PHD from GPS observations show that PHD amplitudes decay approximately with r- 1. 66,where r is the epicentral distances of GPS sites.Magnitude inversion by the empirical relationship that Gutenberg deduced in 1945 show the result of Lushan earthquake is 6. 78,and the shortest time to get the robust value is 142 s,which indicate that a robust magnitude can be estimated within a few minutes after an earthquake event by using high-rate GPS.
引文
1 张小红,郭斐,郭博峰,等.利用高频GPS进行地表同震位移监测及震相识别.地球物理学报,2012;55(6):1912—1918Zhang Xiaohong,Guo Fei,Guo Bofeng,et al.Coseismic displacement monitoring and wave picking with high-frequency GPS.Chinese Journal of Geophys,2012;55(6):1912—1918
2 殷海涛,张培震,甘卫军,等.高频GPS测定的汶川Ms8.0级地震震时近场地表变形过程.科学通报,2010;55(26):2621—2626Yin Haitao,Zhang Peizhen,Gan Weijun,et al.Near-field surface movement during the Wenchuan Ms8.0 earthquake measured by highrate GPS.Chinese Science Bulletin,2010;55(26):2621—2626
3 殷海涛,甘卫军,肖根如,等.利用高频GPS技术进行强震地面运动监测的研究进展.地球物理学进展,2009;24(6):2012—2019Yin Haitao,Gan Weijun,Xiao Genru,et al.Progress on monitoring strong earthquake ground motions using high-rate GPS.Progress of Geophys,2009;24(6):2012—2019
4 Andria B,Cassidy J F.Larson K M.GPS seismology:application to the 2002 Mw 7.9 Denali fault earthquake.Bulletin of the Seismological Society of America,2008;98(2):593—606
5 方荣新.高采样率GPS数据非差精密处理方法及其在地震学中的应用研究.武汉大学,2010:106—111Fang Rongxin.High-rate GPS data non-difference precise proeessing and its application on seismology.Wuhan University,2010:106—111
6 殷海涛,刘希强,李杰,等.现今地震预警技术及其在国内发展状况的探讨.中国地震,2012;28(1):1—9Yin Haitao,Liu Xiqiang,Li Jie,et al.Current earthquake early warning technology and it’s development in China.Earthquake Research in China,2012;28(1):1—9
7 孟国杰,任金卫,金红林,等.GPS高频数据处理方法及其在地震学中的应用研究.国际地震动态,2007;343(7):26—31Meng Guojie,Ren Jinwei,Jin Honglin,et al.Data processing methods of high-rate GPS and its application to seismology.Recent Developments in World Seismology,2007;343(7):26—31
8 Crowell B W,Bock Y,Squibb M B.Demonstration of earthquake early warning using total displacement waveforms from real-time GPS networks.Seismol Res Lett,80(5):772—782
9 Wu Yimin,Li Zhao.Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning.Geophys Res Lett
10 Blewitt G,Kreemer C,Hammond W C,et al.Rapid determination of earthquake magnitude using GPS for tsunami warning systems.Geophys Res Lett,2006;33:L11309
11 Allen R M,Ziv A.Application of real-time GPS to earthquake early warning.Geophys Res Lett,2011;38:L16310
12 Wright T J,Houlie'N,Hildyard M,et al.Real-time,reliable magnitudes for large earthquakes from 1 Hz GPS precise point positioning:the 2011 Tohoku-Oki(Japan)earthquake,Geophys Res Lett,2012;39:L12302
13 Fang Rongxin,Shi Chuang,Song Weiwei,et al.Determination of earthquake magnitude using GPS displacement waveforms from realtime precise point positioning.Geophysical Journal International,2013;196(1):461—472
14 易桂喜,姚华建,朱介寿,等.中国大陆及邻区Rayleigh面波相速度分布特征.地球物理学报,2008;51(2):402—411Yi Guixi,Yao Huajian,Zhu Jeshou,et al.Rayleigh-wave phase velocity distribution in China continent and its adjacent regions.Journal of Geodesy and Geodyamics,2008;51(2):402—411
15 徐韶光,熊永良,廖华,等.汶川地震同震形变的静态和动态分析.大地测量与地球动力学,2010;30(3):27—30Xu Shaoguang,Xiong Yongliang,Liao Hua,et al.Static and kinematic analysis of coseismic deformation of wenchuan earthquake.Journal of Geodesy and Geodyamics,2010;30(3):27—30
16 Allen R M,Kanamori H.The potential for earthquake early warning in southern california.Science,2003;300:786—789
17 Allen R M,Ziv A.Application of real-time GPS to earthquake early earning.Geophysical Research Letters,2011;38:L16310
18 Huang K H,Ruey J R.Surface waves of the 2011 Tohoku earthquake:observations of Taiwan’s Dense high-rate GPS network.J Geophys Res Solid Earth,2013;118:1—14
19 陶夏新,陶正如,王立媛.对中国地震动衰减研究的若干看法.土木建筑与环境工程,2010;32(2):139—140Tao Xiaxin,Tao Zhengru,Wang Liyuan.Several views of Chinese ground motion attention.Journal of Civil Architectural&Enviorment Engineering,2010;32(2):139—140
20 王玉石,李小军,周正华.川滇地区水平向强地震动衰减关系研究.地震学报,2013;35(2):238—249Wang Yushi,Li Xiaojun,Zhou Zhenghua.Research on attenuation relationships for horizontal strong ground motions in Sichuan-Yunnan Region.Acta Seismologica Sinica,2013;35(2):238—249
21 汪素云,俞言祥,高阿甲,等.中国分区地震动衰减关系的确定.中国地震,2000;16(2):99—106Wang Suyun,Yu Yanxiang,Gao Ajia,et al.Development of attenuation relations for ground motion in China.Earthquake Research in China,2000;16(2):99—106
2 殷海涛,张培震,甘卫军,等.高频GPS测定的汶川Ms8.0级地震震时近场地表变形过程.科学通报,2010;55(26):2621—2626Yin Haitao,Zhang Peizhen,Gan Weijun,et al.Near-field surface movement during the Wenchuan Ms8.0 earthquake measured by highrate GPS.Chinese Science Bulletin,2010;55(26):2621—2626
3 殷海涛,甘卫军,肖根如,等.利用高频GPS技术进行强震地面运动监测的研究进展.地球物理学进展,2009;24(6):2012—2019Yin Haitao,Gan Weijun,Xiao Genru,et al.Progress on monitoring strong earthquake ground motions using high-rate GPS.Progress of Geophys,2009;24(6):2012—2019
4 Andria B,Cassidy J F.Larson K M.GPS seismology:application to the 2002 Mw 7.9 Denali fault earthquake.Bulletin of the Seismological Society of America,2008;98(2):593—606
5 方荣新.高采样率GPS数据非差精密处理方法及其在地震学中的应用研究.武汉大学,2010:106—111Fang Rongxin.High-rate GPS data non-difference precise proeessing and its application on seismology.Wuhan University,2010:106—111
6 殷海涛,刘希强,李杰,等.现今地震预警技术及其在国内发展状况的探讨.中国地震,2012;28(1):1—9Yin Haitao,Liu Xiqiang,Li Jie,et al.Current earthquake early warning technology and it’s development in China.Earthquake Research in China,2012;28(1):1—9
7 孟国杰,任金卫,金红林,等.GPS高频数据处理方法及其在地震学中的应用研究.国际地震动态,2007;343(7):26—31Meng Guojie,Ren Jinwei,Jin Honglin,et al.Data processing methods of high-rate GPS and its application to seismology.Recent Developments in World Seismology,2007;343(7):26—31
8 Crowell B W,Bock Y,Squibb M B.Demonstration of earthquake early warning using total displacement waveforms from real-time GPS networks.Seismol Res Lett,80(5):772—782
9 Wu Yimin,Li Zhao.Magnitude estimation using the first three seconds P-wave amplitude in earthquake early warning.Geophys Res Lett
10 Blewitt G,Kreemer C,Hammond W C,et al.Rapid determination of earthquake magnitude using GPS for tsunami warning systems.Geophys Res Lett,2006;33:L11309
11 Allen R M,Ziv A.Application of real-time GPS to earthquake early warning.Geophys Res Lett,2011;38:L16310
12 Wright T J,Houlie'N,Hildyard M,et al.Real-time,reliable magnitudes for large earthquakes from 1 Hz GPS precise point positioning:the 2011 Tohoku-Oki(Japan)earthquake,Geophys Res Lett,2012;39:L12302
13 Fang Rongxin,Shi Chuang,Song Weiwei,et al.Determination of earthquake magnitude using GPS displacement waveforms from realtime precise point positioning.Geophysical Journal International,2013;196(1):461—472
14 易桂喜,姚华建,朱介寿,等.中国大陆及邻区Rayleigh面波相速度分布特征.地球物理学报,2008;51(2):402—411Yi Guixi,Yao Huajian,Zhu Jeshou,et al.Rayleigh-wave phase velocity distribution in China continent and its adjacent regions.Journal of Geodesy and Geodyamics,2008;51(2):402—411
15 徐韶光,熊永良,廖华,等.汶川地震同震形变的静态和动态分析.大地测量与地球动力学,2010;30(3):27—30Xu Shaoguang,Xiong Yongliang,Liao Hua,et al.Static and kinematic analysis of coseismic deformation of wenchuan earthquake.Journal of Geodesy and Geodyamics,2010;30(3):27—30
16 Allen R M,Kanamori H.The potential for earthquake early warning in southern california.Science,2003;300:786—789
17 Allen R M,Ziv A.Application of real-time GPS to earthquake early earning.Geophysical Research Letters,2011;38:L16310
18 Huang K H,Ruey J R.Surface waves of the 2011 Tohoku earthquake:observations of Taiwan’s Dense high-rate GPS network.J Geophys Res Solid Earth,2013;118:1—14
19 陶夏新,陶正如,王立媛.对中国地震动衰减研究的若干看法.土木建筑与环境工程,2010;32(2):139—140Tao Xiaxin,Tao Zhengru,Wang Liyuan.Several views of Chinese ground motion attention.Journal of Civil Architectural&Enviorment Engineering,2010;32(2):139—140
20 王玉石,李小军,周正华.川滇地区水平向强地震动衰减关系研究.地震学报,2013;35(2):238—249Wang Yushi,Li Xiaojun,Zhou Zhenghua.Research on attenuation relationships for horizontal strong ground motions in Sichuan-Yunnan Region.Acta Seismologica Sinica,2013;35(2):238—249
21 汪素云,俞言祥,高阿甲,等.中国分区地震动衰减关系的确定.中国地震,2000;16(2):99—106Wang Suyun,Yu Yanxiang,Gao Ajia,et al.Development of attenuation relations for ground motion in China.Earthquake Research in China,2000;16(2):99—106
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心