利用小波分解重构提取高频GPS数据静态永久性变形
|
摘要
研究了利用小波分解重构提取高频GPS数据静态永久性变形的方法。通过对El Mayor-Cucapah地震和东日本大地震两次地震高频GPS数据的处理和分析表明,PPP模式处理的高频GPS数据能够获取和强震仪相近的短周期强运动位移信息,并且保留了静态永久性变形信息;利用小波分解重构可以高精度地估计高频GPS动态位移中的静态永久性变形,有效区分主震和余震造成的静态永久性变形以及震后蠕滑位移。
This paper focuses on the research of resolving static offset from high-rate GPS data by wavelet decomposition-reconstruction algorithm.After processing and analyzing the high-rate GPS data of El Mayor-Cucapah earthquake and Tohuko-Oki earthquake in precise point positioning(PPP)mode,we find that the short-period waveforms captured by highrate GPS data processed in PPP mode are comparable with the twice-integrated strong-motion records and the former one also could retain the static offset signal.Static offset resolved by decomposition-reconstruction algorithm from the high-rate GPS data is helpful to separate the static offset induced by main shock,strong aftershock and the post-seismic deformation.
This paper focuses on the research of resolving static offset from high-rate GPS data by wavelet decomposition-reconstruction algorithm.After processing and analyzing the high-rate GPS data of El Mayor-Cucapah earthquake and Tohuko-Oki earthquake in precise point positioning(PPP)mode,we find that the short-period waveforms captured by highrate GPS data processed in PPP mode are comparable with the twice-integrated strong-motion records and the former one also could retain the static offset signal.Static offset resolved by decomposition-reconstruction algorithm from the high-rate GPS data is helpful to separate the static offset induced by main shock,strong aftershock and the post-seismic deformation.
引文
[1]Anzidei M.Coseismic Deformation of the Destructive April 6,2009 L’Aquila Earthquake(Central Ltaly)from GPS Data[J].Geophys Res Lett,2009,36:L17307
[2]Lin A,Ren Z,Jia D,et al.Co-seismic Thrusting Rupture and Slip Distribution Produced by the 2008Mw 7.9 Wenchuan Earthquake,China[J].Tectonophysics,2009,471(3-4):203-215
[3]Ching K E,Rau R J,Zeng Y.Coseismic Source Model of the 2003Mw 6.8Chengkung Earthquake,Taiwan,Determined from GPS Measurements[J].J Geophys Res,2007,112:B06422
[4]Diao F Q,Xiong X,Ni S D,et al.Slip Model for the 2011 Mw 9.0Sendai(Japan)Earthquake and Its Mw 7.9Aftershock Derived from GPS Data[J].Chin Sci Bull,2011,56(27):2 941-2 947
[5]Wdowinski S,Bock Y,Zhang J,et al.Southern California Permanent GPS Geodetic Array:Spatial Filtering of Daily Positions for Estimating Coseismic and Postseismic Displacements Induced by the 1992Landers Earthquake[J].Journal of Geophysical Research,1997,102(8):18 057-18 070
[6]Banerjee P,Pollitz F,Nagarajan B,et al.Coseismic Slip Distributions of the 26December 2004Sumatra-Andaman and 28 March 2005 Nias Earthquakes from GPS Static Offsets[J].Bull Seismol Soc Am,2007,97(1A):S86-S102
[7]Wang M,Li Q,Wang F,et al.Far-field Coseismic Displacements Associated with the 2011 TohokuOki Earthquake in Japan Observed by Global Positioning System[J].Chin Sci Bull,2011,56(23):2 419-2 424
[8]杨少敏,聂兆生,贾志革,等.GPS解算的日本Mw9.0级地震的远场同震地表位移[J].武汉大学学报·信息科学版,2011,36(11):1 336-1 339
[9]Larson K M,Miyazaki S.Resolving Static Offsets from High-rate GPS Data:the 2003 Tokachi-Oki Earthquake[J].Earth Planets Space,2008,60:801-808
[10]Agnew D C,Larson K M.Finding the Repeat Times of the GPS Constellation[J].GPS Solutions,2007,11(1):71-76
[11]Larson K M.Improving the Precision of High-rate GPS[J].Journal of Geophysical Research,2007,112:B05422
[12]Bertiger W,Shailen D,Haines D B,et al.Single Receiver Phase Ambiguity Resolution with GPS Data[J].Journal of Geodesy,2010,84(5):327-337
[13]Li L,Li K,Liu C.Comparison of Detrending Methods in Spectral Analysis of Heart Rate Variability[J].Research Journal of Applied Sciences,2011,3(9):1 014-1 021
[14]Wang R,Schurr B,Milkereit C,et al.An Improved Automatic Scheme for Empirical Baseline Correction of Digital Strong-Motion Records[J].Bull Seismol Soc Am,2011,101(5):2 029-2 044
[15]Wu Y M,Wu C F.Approximate Recovery of Coseismic Deformation from Taiwan Strong-motion Records[J].J Seismology,2002,11(2):159-170
[16]Graizer V.Strong Motion Recordings and Residual Displacements:What are We Actually Recording in Strong Motion Seismology[J].Seismol Res Lett,2010,81(4):635-639
[2]Lin A,Ren Z,Jia D,et al.Co-seismic Thrusting Rupture and Slip Distribution Produced by the 2008Mw 7.9 Wenchuan Earthquake,China[J].Tectonophysics,2009,471(3-4):203-215
[3]Ching K E,Rau R J,Zeng Y.Coseismic Source Model of the 2003Mw 6.8Chengkung Earthquake,Taiwan,Determined from GPS Measurements[J].J Geophys Res,2007,112:B06422
[4]Diao F Q,Xiong X,Ni S D,et al.Slip Model for the 2011 Mw 9.0Sendai(Japan)Earthquake and Its Mw 7.9Aftershock Derived from GPS Data[J].Chin Sci Bull,2011,56(27):2 941-2 947
[5]Wdowinski S,Bock Y,Zhang J,et al.Southern California Permanent GPS Geodetic Array:Spatial Filtering of Daily Positions for Estimating Coseismic and Postseismic Displacements Induced by the 1992Landers Earthquake[J].Journal of Geophysical Research,1997,102(8):18 057-18 070
[6]Banerjee P,Pollitz F,Nagarajan B,et al.Coseismic Slip Distributions of the 26December 2004Sumatra-Andaman and 28 March 2005 Nias Earthquakes from GPS Static Offsets[J].Bull Seismol Soc Am,2007,97(1A):S86-S102
[7]Wang M,Li Q,Wang F,et al.Far-field Coseismic Displacements Associated with the 2011 TohokuOki Earthquake in Japan Observed by Global Positioning System[J].Chin Sci Bull,2011,56(23):2 419-2 424
[8]杨少敏,聂兆生,贾志革,等.GPS解算的日本Mw9.0级地震的远场同震地表位移[J].武汉大学学报·信息科学版,2011,36(11):1 336-1 339
[9]Larson K M,Miyazaki S.Resolving Static Offsets from High-rate GPS Data:the 2003 Tokachi-Oki Earthquake[J].Earth Planets Space,2008,60:801-808
[10]Agnew D C,Larson K M.Finding the Repeat Times of the GPS Constellation[J].GPS Solutions,2007,11(1):71-76
[11]Larson K M.Improving the Precision of High-rate GPS[J].Journal of Geophysical Research,2007,112:B05422
[12]Bertiger W,Shailen D,Haines D B,et al.Single Receiver Phase Ambiguity Resolution with GPS Data[J].Journal of Geodesy,2010,84(5):327-337
[13]Li L,Li K,Liu C.Comparison of Detrending Methods in Spectral Analysis of Heart Rate Variability[J].Research Journal of Applied Sciences,2011,3(9):1 014-1 021
[14]Wang R,Schurr B,Milkereit C,et al.An Improved Automatic Scheme for Empirical Baseline Correction of Digital Strong-Motion Records[J].Bull Seismol Soc Am,2011,101(5):2 029-2 044
[15]Wu Y M,Wu C F.Approximate Recovery of Coseismic Deformation from Taiwan Strong-motion Records[J].J Seismology,2002,11(2):159-170
[16]Graizer V.Strong Motion Recordings and Residual Displacements:What are We Actually Recording in Strong Motion Seismology[J].Seismol Res Lett,2010,81(4):635-639
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