KINEMATIC DEFORMATION OF 2011 Mw9.0 JAPAN EARTHQUAKE OBSERVED BY 1 Hz GPS
Huang Yong1,2) ;Yang Shaomin1,2) ;Liu Gang1,2) ;Nie Zhaosheng1,2) ;Wu Yun1,2) ; and Li Gang1,2)
1)Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,Wuhan 430071;2)Wuhan Base of Institute of Crustal Dynamics,CEA,Wuhan 430071
Abstract Using kinematic analysis module TRACK of GAMIT/GLOBK to process 1 Hz GPS data of eight continuous stations around Japan by regarding the IGS site SHAO as a reference,we obtained and analyzed the kinematic deformation series which caused by the Mw9.0 Japan earthquake on March 11,2011. The result shows that most of the stations were moving towards southeast when the earthquake occurred.The maximum horizontal amplitude of MIZU and USUD , the two closest sites to the epicenter, are 3.11 m and 0.67 m ,respectively. To reduce systematic errors in the positioned result which are relevant to the surrounding environment of station, we filtered the kinematic deformation series of USUD in NS direction using modified sidereal filtering method. After applying modified sidereal filtering method,the root mean square error of kinematic deformation series of USUD in NS direction is decreased from 1.65 cm to 0.82 cm.
Key words ：
1 Hz GPS
Mw9.0 Japan earthquake
kinematic crustal deformation
modified sidereal filtering
power spectral density
Received: 01 January 1900
Corresponding Authors:
Huang Yong
Cite this article:
Huang Yong,Yang Shaomin,Liu Gang et al. KINEMATIC DEFORMATION OF 2011 Mw9.0 JAPAN EARTHQUAKE OBSERVED BY 1 Hz GPS[J]. , 2012, 32(6): 33-36.
Huang Yong,Yang Shaomin,Liu Gang et al. KINEMATIC DEFORMATION OF 2011 Mw9.0 JAPAN EARTHQUAKE OBSERVED BY 1 Hz GPS[J]. jgg, 2012, 32(6): 33-36.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2012/V32/I6/33
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