The separation and parameter determination of PS converted phases in deep sounding by converted waves of earthquakes |
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| Authors: | Jia-Ru Zhang Xue-Zhong Shao and Wei-An Gao |
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| Institution: | (1) Institute of Geology, State Seismological Bureau, 100029 Beijing, China |
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| Abstract: | The practice of deep sounding by converted waves of Earthquakes shows that the time duration of the PS converted phases is
usually longer than the arrival time delay between the converted phases coming from the adjacent boundaries. So, the mutual
interference of the converted phases from adjacent boundaries may form a complicated interference series of the waves. It
is difficult to recognize and determine exactly the parameters of the converted waves in the interfering records. In this
paper the method of omni-azimuthal polarization analysis and the method of separation of interfering waves are described.
The theoretical examples show that the procedure given in the paper is rather effective to separate the interfering waves
and to determine their parameters, and so, is important to improve the resolving power and the reliability of the method of
deep sounding by converted waves of earthquakes.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,15, 39–45, 1993.
The research reported here is a part of proposal sponsored by State Seismological Bureau and China Joint Seismological Science
Foundation. |
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| Keywords: | deep sounding by converted waves of earthquakes PS converted phases omni-azimuthal polarization analysis method of separating the interfering waves |
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