Application of SPn Phase in Focal Depth Determination in Anhui and Its Adiacent Area
详细信息
- 责任者：Cheng Xin (Earthquake Administration of Anhui Province ; Hefei 230031 ; China) ; Hong Dequan
- 刊名：South China Journal of Seismology
- 出版年：2012
- 卷期：32(3)
- 关键词：震相分析 ; seismic phase analysis ; 震源深度 ; focal depth ; 安徽 ; Anhui Province
- 页码：p.141-147
- 图表：3 illus., 2 tables, 12 refs.
- 分类号：0500
- issnNo：ISSN1001-8662
- isbnNo：CN44-1266/P
摘要
This paper has conducted a sPn phase analysis of earthquakes （M ≥3.0） in Anhui Province and its adjacent area using characteristics of depth phase sPn and waveform data of Anhui digital seismic network from 2008 to 2012. And the results of focal depth calculated by sPn phases are contrasted with simplex method widely used in seismic networks and positioning results issued by national authority seismological agency. The results show that it helps to correct positioning accuracy of station network by measuring near-field earthquake depth using sPn-Pn wave of near-field seismic phase, which is also of great significance in accurate calculation of seismic source parameters and earthquake damage ratings.