5·12四川汶川地震次声波
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摘要
DFW-ⅠⅢ型泥石流次声警报器完整地记录了5·12汶川8.0级地震及以后多次>3.0级余震的地震次声波资料。分析表明,此地震次声波为一确定性信号,卓越频率为2～3Hz,其声压随地震震级而变,5·12地震时的声压>40Pa。记录的5·12强震时间较之公布的地震发生时间提前约1min。希望地震次声波能引起相关研究者的兴趣和重视,并进一步探索相关的机理。
The debris flow warning device,DFW-I III Model is used for research and monitor to debris flow originally.It has recorded the data of infrasound waves from Wen Chuan Earthquake,"5·12",2008 of 8.0 degree and all aftershock,which are more than 3.0 degree.The data shows that the infrasound waves are a define signal.It is a simple sine wave.Its predominant frequency is 2-3 Hz.And sound pressure is changed with earthquake degree.For 8.0 degree of "5·12",Wen chuan the sound pressure of infrasound waves is more than 40 Pa(shown by Fig.1 & 2).The time,which recorded for "5·12" earthquake is about 1 min in advance compared with the time announced by National Earthquake Bureau(See table 1).Hereby authors hope this paper will attract researchers' attention and interesting.And to explore relative mechanism of infrasound wave from earthquake.
The debris flow warning device,DFW-I III Model is used for research and monitor to debris flow originally.It has recorded the data of infrasound waves from Wen Chuan Earthquake,"5·12",2008 of 8.0 degree and all aftershock,which are more than 3.0 degree.The data shows that the infrasound waves are a define signal.It is a simple sine wave.Its predominant frequency is 2-3 Hz.And sound pressure is changed with earthquake degree.For 8.0 degree of "5·12",Wen chuan the sound pressure of infrasound waves is more than 40 Pa(shown by Fig.1 & 2).The time,which recorded for "5·12" earthquake is about 1 min in advance compared with the time announced by National Earthquake Bureau(See table 1).Hereby authors hope this paper will attract researchers' attention and interesting.And to explore relative mechanism of infrasound wave from earthquake.
引文
[1]S.Zhang,N.Yu.Infrasonic behavior of debris flow and infrasonic warning device,Proc.International conference[A].In:S.S.Cher-nomorets.Debris Flows:Disasters,Risk,Forecast,Protection,2008[C].Pyatigorsk,Russia,2008:67～80
[2]History Group of Earthquake Working Committee.Chinese Chrono-logical Table of Earthquake[M].Beijing:Science Press,1956:90,212,960,1287[中国科学院地震工作委员会历史组编辑.中国地震资料年表[M].北京:科学出版社,1956:90,212,960,1287]
[3]Richard K.Cock,Strange sound in the atmosphere,Part1and2,Physical Acoustical Edited by R.Bruce Lindsay,Dowden,Hutchin-son and Ross,Inc,1974:67～80
[4]Xie Jinlai,Xie Zhaohua.Infrasound waves caused by earthquake on12July1993in Japan[J].Acta Acustica,1996,21(1):55～61[谢金来,谢照华.1993年7月12日日本北海道地震次声波[J].声学学报,1996,21(1):55～61]
[5]Li Jun-zhi,Chen Wei-sheng,Xia Ya-qin.Forecasting of strong earthquakes by synthesizing observation methods based on multi dis-ciplines[J].Journal ofBeijing University ofTechnology,2007,33(7):778～784[李均之,陈维升,夏雅琴.综合多学科观测方法预测强地震[J].北京工业大学学报,2007,33(7):778～784]
[6]Qin Fe,Zheng Fei,Li Junzhi,et al.A mechanism model for infra-sound emission during earthquake incubation[J].Journal ofBeijing University ofTechnology,2006,32(6):568～572[秦飞,郑菲,李均之,等.孕震过程中次声波产生的机理[J].北京工业大学学报,2006,32(6):568～572]
[2]History Group of Earthquake Working Committee.Chinese Chrono-logical Table of Earthquake[M].Beijing:Science Press,1956:90,212,960,1287[中国科学院地震工作委员会历史组编辑.中国地震资料年表[M].北京:科学出版社,1956:90,212,960,1287]
[3]Richard K.Cock,Strange sound in the atmosphere,Part1and2,Physical Acoustical Edited by R.Bruce Lindsay,Dowden,Hutchin-son and Ross,Inc,1974:67～80
[4]Xie Jinlai,Xie Zhaohua.Infrasound waves caused by earthquake on12July1993in Japan[J].Acta Acustica,1996,21(1):55～61[谢金来,谢照华.1993年7月12日日本北海道地震次声波[J].声学学报,1996,21(1):55～61]
[5]Li Jun-zhi,Chen Wei-sheng,Xia Ya-qin.Forecasting of strong earthquakes by synthesizing observation methods based on multi dis-ciplines[J].Journal ofBeijing University ofTechnology,2007,33(7):778～784[李均之,陈维升,夏雅琴.综合多学科观测方法预测强地震[J].北京工业大学学报,2007,33(7):778～784]
[6]Qin Fe,Zheng Fei,Li Junzhi,et al.A mechanism model for infra-sound emission during earthquake incubation[J].Journal ofBeijing University ofTechnology,2006,32(6):568～572[秦飞,郑菲,李均之,等.孕震过程中次声波产生的机理[J].北京工业大学学报,2006,32(6):568～572]
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