Focal mechanisms and tectonic stress field of the Xinfengjiang earthquake |
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Authors: | Bailin Wei Panglong Chen Fuguang Li and Hesheng Huang |
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Institution: | (1) Seismology Bureau of Guangdong Province, 510070 Guangzhou, China |
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Abstract: | Altogether 83 events were recorded clearly by all the 8 sub-seismometric stations of the telemetrered seismic network in the
Xinfengjiang area during the period from October 1st 1983 to April 30th 1987. Based upon the difference of the initial motion
of P waves, the authors divided the 83 earthquakes into 37 pattens. Combining similar pattens, we have got 5 types of focal
mechanism solutions. The recent tectonic stress field of the Xinfengjiang region is discussed. The characteristics of the
stress axis and the nodal planes are different from which our predecessors got earlier; but the present results is similar
to which put forward by the authors in 1981. This paper shows that the tectonic stress field is clearly characterized by a
compression in the N-S direction.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica
13. 462–476, 1991. |
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Keywords: | focal mechanism tectonic stress field transform stress field |
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