Temporal and spacial analysis of regional composite nodal plane solutions for small earthquakes |
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Authors: | Ming Yan |
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Institution: | (1) Institute of Geophysics, State Seismological Bureau, 100081 Beijing, China |
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Abstract: | A method is proposed in this paper for the analysis of temporal and spatial characteristics of composite nodal plane solutions
for small earthquakes. With this method, the interested region is devided into small areas according to the geological features
of the region. As an example, 107 composite nodal plane solutions are calculated for the adjoining region of Shaxi, Hebei
and Neimenggu. The temporal and spatial characteristics of the variations of the solution parameters before and after the
great Tangshan main earthquake in 1976 have been analysed and some interesting results are obtained.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismlogica Sinica,13, 9–20, 1991. |
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Keywords: | first motion sign composite nodal plane solution ratio of inconsistent signs |
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