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Volume 45 Issue 2
Mar.  2023
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Article Navigation >  Acta Seismologica Sinica  > 2023  >  45(2): 246-257
Pan Q，Shen X Z. 2023. Spatial autocorrelation method based on dense short-period seismic array and its application in the Guangdong-Hong Kong-Macao Greater Bay. Acta Seismologica Sinica，45（2）：246−257 doi: 10.11939/jass.20220003
Citation: Pan Q，Shen X Z. 2023. Spatial autocorrelation method based on dense short-period seismic array and its application in the Guangdong-Hong Kong-Macao Greater Bay. Acta Seismologica Sinica，45（2）：246−257 doi: 10.11939/jass.20220003
shu

Spatial autocorrelation method based on dense short-period seismic array and its application in the Guangdong-Hong Kong-Macao Greater Bay

doi: 10.11939/jass.20220003
  • 1.

    School of Earth Science and Engineering，Sun Yat-Sen University，Guangzhou 510275，China

  • 2.

    Southern Marine Science and Engineering Guangdong Laboratory （Zhuhai），Guangdong Zhuhai 519080，China

  • Received Date: 2022-01-06
  • Rev Recd Date: 2022-02-22
    • Available Online: 2023-02-24
  • Publish Date: 2023-03-15
    Abstract
  • Based on spatial autocorrelation （SPAC） method, the dispersion curves of Rayleigh wave have been extracted from the microtremor recorded by 21 stations belong to the dense short-period array deployed in Guangdong-Hong Kong-Macao Greater Bay area, and then the inversion for shallow S-wave velocity structures within a depth of 1 km beneath the Panyu district, Guangzhou city, have been performed. The results show that the velocity beneath the array is obviously low within 0.25 km depth, ranging from 1.17 km/s to 1.59 km/s, while the velocity increases steadily to 2.88 km/s between 0.25 km to 1 km depth. This indicates that the stability and the reliability of the method, which also implies that the SPAC is an effective, economical and environmental method for detecting the shallow fine structures in densely populated urban areas, and it will play an increasingly important role in the exploration of shallow structure in urban areas in the future.

     

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