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《Seismological Research of Northeast China》 1990-04
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RESEARCHES OF THE AMPLITUDE RATIO ANOMALY OF SEISMIC WAVE IN THE SEISMOGENIC ZONE

Tang Minglin Yu Jiung Seismological Beismological Bureau of Liaoning Province  
Systematic measure of amplitude ratio of seismic wave in the siesmogenic zone have been made for 3 years befor Haicheng earthquake (Feb. 4, 1975) and Tangshan earthquake (Jul. 28, 1976). The positive anomalg area of the ampl- itude ratio of seismic wave had appeared in 2-3 years befor an large earthqu- ake on epicentral region, but the negative anomaly area had been outer. With dereloping of seismogenic state, the positive anomaly area gradually contracted, but the negative anomaly area expanded by deyrees. It should be noted that both of them moved from surrounding to the epicenter region. The amplitude ratio anomaly and its temporal change have been interpr- eted by the model of wave form deformation of the crustal block in seismo genic zone. Furthermore, a physical explanation of the anomaly has been also obtained by means of "primary wave" and "scattered wave" displace- ment based on corresponding wave equation with disturbed and undisturbed medium. Meanwhile. we discuss significance for the amplitude ratio anomaly to be used to predict earthquake.
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 FENG DEYI Gu JINPING LI QINGHE(Seismological Institute of Lamhou, State Seismological Bureau);ANOMALOUS AMPLITUDE VARIATIONS OF SEISMIC WAVES PROPAGATING IN FRACTURED MEDIA[J];Acta Seismologica Sinica;1983-02
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 YANG Fu-tao,SUN Peng(Department of Physics,Anshan Normal University,Anshan Liaoning 114007,China);Discussion on Non-periodic Function Carried out by Fourier Series when Calculating Power[J];Journal of Anshan Normal University;2009-02
2 Zhang Chuanding;Wu Xiaoping;Lu Zhonglian(Zhengzhou Institute of Surveying and Mapping, 450052);QUASI-GREEN'S FUNCTION SOLUTION OF MOLODENSKIJ'S PROBLEM[J];ACTA GEODAETICA ET CARTOGRAPHICA SINICA;1996-01
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9 Huang Zhen Wang Wenliang (Thermal Energy Engineering Research Institute, Southeast University, Nanjing 210018) Cheng Zirun (Department of Environmental Engineering, Southeast University, Nanjing 210018);Research on the Models of Straight Through Flow Electrocyclone Precipitator[J];JOURNAL OF SOUTHEAST UNIVWRSITY;1996-05
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