利用远震接收函数计算库尔勒地震台下方地壳厚度和泊松比

Calculation of crustal thickness and Poisson’s ratio beneath Korla Seismic Station by teleseismic receiver function

基于2019-2020年库尔勒地震台记录的远震波形数据,使用时域内反褶积方法提取P波径向接收函数,并采用H-κ叠加搜索法扫描计算台站下方地壳的平均厚度和泊松比。结果表明,库尔勒地震台站下方地壳厚度约为50.3 km,泊松比值为0.28,与前人研究结果基本一致。该研究结果有助于更详细地了解库尔勒区域的莫霍面分布,可为该区地质构造的深入研究提供参考。

Based on the teleseismic waveform data recorded by the Korla Seismic Station from 2019 to 2020,the P-wave radial receiver functions are extracted by using the time domain deconvolution method,and the average thickness and Poisson’s ratio in the crust beneath the station are scanned and calculated by using the H-κstacking method.The results show that the crustal thickness beneath the Korla Seismic Station is 50.3 km,and the Poisson’s ratio is 0.28,which is basically consistent with previous research results.This study is helpful in understanding the distribution of Moho in this area in more detail and providing a reference for further study of geological structure.