短周期地震仪接收函数的可行性分析——以新疆和田地震台阵为例

Translated title of the contribution: Feasibility analysis of short-period seismograph receiver function-An example of Hotan Seismic Array, Xinjiang

Ming Shuai Tang, Can Ge*, Yong Zheng, Hai Tao Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Using the teleseismic waveform data recorded by 9 sub-stations (including 1 set of broadband and 9 sets of short-period seismographs) of Hotan Seismic Array with an aperture about 3 km in 3 years, we studied and analysed the stability and reliability of short-period seismograph receiver function. By comparative analysis of the receiver function waveforms isolated from teleseismic waveform data recorded by short-period and broadband seismographs, the following results are obtained. (1) Receiver functions of short-period and broadband seismographs are very consistent and highly stable, they have good linear correlation (correlation coefficient 0.9), but Ps seismic phases have small amplitude difference (about 20%), whenever the Gaussian coefficient value is 1.5 or 2.5. (2) The short-period seismograph receiver functions can replace broadband seismograph receiver functions, if a method using the seismic phase arrival time of receiver functions is adopted (such as grid-stacking-search method). (3) The result may cause wrong interpretation (e.g., the lower crust low-velocity layer) if only the waveform data of short-period seismograph receiver functions are used to invert for crustal S-wave velocity structure, because there exist large velocity deviations (about 0.3 km/s) from lower crust to upper mantle, due to lack of low frequency information under 0.155 Hz and the nonlinear amplitude response under 1 Hz of the short-period seismographs; so additional data sensitive to wave velocity value (such as surface wave dispersion) are needed for joint analysis.

Original languageChinese
Pages (from-to)2670-2680
Number of pages11
JournalChinese Journal of Geophysics
Volume56
Issue number8
DOIs
Publication statusPublished - Aug 2013
Externally publishedYes

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Keywords

  • Feasibility
  • Hotan Seismic Array
  • Receiver function
  • Short-period seismograph

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