[1]LI Qilei,CUI Yu,AN Lixia,et al.Focal Depth Determination of Earthquake in Qaidam Basin by sPn Phase[J].Journal of Seismological Research,2016,39(03):473-478.
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Focal Depth Determination of Earthquake in Qaidam Basin by sPn Phase
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 03
Page number:
473-478
Column:
Public date:
2016-07-23
- Title:
- Focal Depth Determination of Earthquake in Qaidam Basin by sPn Phase
- Keywords:
- sPn phase; focal depth; crustal model; waveform cross-correlation; sliding window correlation method
- CLC:
- P315.6
- DOI:
- -
- Abstract:
- Based on observation data recorded by Qinghai Remote Digital Seismic Network, we exacted the sPn phases of Golmud M4.0 and M3.6 earthquakes by phase characteristic comparison. Then we derived the mathematical formula of focal depth in the case of single-layer and two-layer model respectively, and calculated the focal depth of these two earthquakes. In order to verify the reliability of the calculation results, we compared the focal depth determined by the cross-correlation technique of sliding window with the artificial recognition, and found that the difference of the focal depth by two methods is 1.0 km. After observing the correlation coefficient, there exits an error while we identified the sPn phase by the sliding window method because of the magnitude of the earthquake are small, however, the arrival times of the obtained phases are in agreement with that of the artificial recognition after error correction.
- References:
- -
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Last Update:
1900-01-01