SIMULATION OF STRONG GROUND MOTION IN AKETAO M6.7 EARTHQUAKE USING THEORETICAL GREEN'S FUNCTION |
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| Authors: | FENG Wei LIU Jie LUO Jia-hong HOU Jian-sheng |
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| Institution: | 1.Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China;2.China Earthquake Networks Center, Beijing 100045, China;3.Institute of Geology, China Earthquake Administration, Beijing 100029, China;4.Ministry of Emergency Management of the People's Republic of China, Beijing 100017, China |
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| Abstract: | Aketao M6.7 earthquake on November 25, 2016 occurred in Aketao Country, Kizilsu Kirghiz Autonomous Prefecture, Xinjiang Autonomous Region. In this paper, according to the focal mechanism solution, the geometrical parameters of the fault are used as input to simulate the acceleration records of the surrounding area of Aketao M6.7 earthquake on November 25, 2016 with the QSGRN/QSCMP program. The peak ground acceleration distribution is plotted by extracted peak ground accelerations and site condition correction. Comparison is carried out between the observed waveforms and the simulated waveforms in the time domain and the frequency domain of two strong motion stations. It is verified that the amplitudes of simulated and observed data are equal in magnitude, their calculated residuals are smaller in low frequency range and the spectral characteristics of simulated and observed data are consistent. Furthermore, the simulated peak ground acceleration corresponding to the coordinates of the actual survey points is extracted and compared with the survey spot intensity, and both have good correspondence. This paper attempts to provide a method for rapid output of peak ground acceleration distribution after an earthquake, so as to provide a method for estimating the seismic impact field in areas where the monitoring station is scarce, the topography is complex or it is difficult to implement the rapid earthquake disaster investigation. And it also provides supporting information for rapid assessment of earthquake disaster and emergency decision-making. |
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| Keywords: | Aketao M6 7 earthquake theoretical Green's function peak ground acceleration survey spot intensity |
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