连续波形:数字地震台网的新前沿
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摘要
21世纪以来,连续波形的自动处理成为数字地震台网的一个新的前沿领域。本文通过深低频脉动(LFT,Low Frequency Tremor)、噪声相关函数(NCF,Noise Correlation Function)、"重复地震"等3个方面,指出在这一新的前沿领域中,中国数字地震观测系统正面临巨大的发展机遇。与此相应,在中国地震台网的下一步发展中,应重视连续波形的记录,并将连续波形的自动处理作为一个发展重点来考虑。
Automatic processing of continuous waveforms has emerged as a new frontier of digital seismograph network since the 21st century.In the discussion on the seismology of deep Low Frequency Tremor(LFT),Noise Correlation Function(NCF),and 'repeating earthquakes',it is observed that digital seismograph networks in China are facing to unprecedented opportunity.Accordingly,in the present development of the seismology of digital seismograph networks,continuous waveforms need to be emphasized,and automatic processing of continuous waveforms needs to be considered as a strategic priority.
Automatic processing of continuous waveforms has emerged as a new frontier of digital seismograph network since the 21st century.In the discussion on the seismology of deep Low Frequency Tremor(LFT),Noise Correlation Function(NCF),and 'repeating earthquakes',it is observed that digital seismograph networks in China are facing to unprecedented opportunity.Accordingly,in the present development of the seismology of digital seismograph networks,continuous waveforms need to be emphasized,and automatic processing of continuous waveforms needs to be considered as a strategic priority.
引文
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Hiramatsu Y.,Watanabe T.,Obara K.,2008,Deep low-frequency tremors as a proxy for slip monitoring at plate interface,Geophys.Res.Lett.,35,L13304,doi:10.1029/2008GL034342.
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Igarashi T.,Matsuzawa T.,Hasegawa T.,2003,Repeating earthquakes and interpolate aseismic slip in the northeastern Japansubduction zone,J.Geophys.Res.,108,2249,doi:10.1029/2002JB001920.
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Jiang C.S.,Wu Z.L.,2009,Temporal variation of noise correlation function(NCF)in Beijing and surroundings:Its relationwith climate events and implications,Earthq.Sci.,22,75～81.
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