| Estimation of azimuth and slowness of tele-seismic signals recorded by a local seismic network |
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| 作者姓名： | 靳平 潘常周 |
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| 作者单位： | NorthwestInstituteofNuclearTechnology，NorthwestInstituteofNuclearTechnology Xian710024，China，Xian710024，China |
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| 基金项目： | Foundation of Verification Researches for Arm Control Technology. |
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| 摘 要： | Introduction The azimuth and slowness are two major features of seismic signals. The accurate estimation of them is quite important for both phase identification and event location. Generally, there are two types of seismic stations, i.e. 3-component stations (3C) and arrays. To estimate the two direc-tional parameters, the polarization analysis (Jurkevics, 1988) is commonly used for 3C stations and the frequency-wavenumber spectrum analysis ( f-k) (Capon, 1969; Kvaerna, Doornbos, 1986) is …
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| 收稿时间： | 19 June 2001 |
| 修稿时间： | 10 October 2002 |
Estimation of azimuth and slowness of teleseismic signals recorded by a local seismic network |
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| Jin Ping,and Pan Chang-zhou.Estimation of azimuth and slowness of tele-seismic signals recorded by a local seismic network[J].Acta Seismologica Sinica(English Edition),2002,15(6):646-655. |
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| Authors: | Jin Ping and Pan Chang-zhou |
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| Institution: | Northwest Institute of Nuclear Technology, Xian 710024, China |
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| Abstract: | A new method that is applicable to local seismic networks to estimate the azimuth and slowness of teleseismic signals is introduced in the paper. The method is based on the correlation between the arrival times and station positions. The analyzed results indicate that the azimuth and slowness of teleseismic signals can be accurately estimated by the method. Average errors for azimuth and slowness measurements obtained by this method using data of Xian Digital Telemetry Seismic Network are 2.0?and 0.34 s/(?, respectively. The conclusions drawn from this study indicate that this method may be very useful to interpret teleseismic records of local seismic networks. |
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| Keywords: | local station network teleseismic event azimuth slowness |
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