Crustal thicknesses of China

中国大陆地壳厚度分布

Crustal thicknesses beneath 1669 seismic stations, including permanent and portable seismic stations, in China were retrieved using 1-D S-wave velocity models, which were obtained by linearized inversion of the RFs with initial reference models from regionalized S-wave velocities of surface-wave inversions. Synthetic tests in Feng et al. (2017) demonstrated that this inversion scheme is superior to a jointly linearized inversion of RFs and surface waves. It is noted that the thicknesses are distance from surface to the Moho discontinuity. 理论测试(Feng et al., 2017 )证明了:先用面波频散反演一维S波波速模型,然后用该模型做利用接收函数(或与面波联合)反演一维波速的初始模型,明显优于直接进行面波和接收函数的线性化联合反演。据此,我们对中国大陆内的1669个台站进行了这种两步反演,然后根据所得到的波速模型确定了台站下方的地壳厚度。见下图和下面可下载的数据文件。

The thicknesses can be downloaded:

The thicknesses are shown in figure below:

Figure 1. Crustal thicknesses beneath 1669 seismic stations in China. The figure is the same as Figure 6 in Feng et al. [2017]. The thicknesses are determined from 1-D S-velocity models inverted from receiver functions, but not from H-k stacking. [download PDF]


References / 参考文献

Feng Mei, An Meijian, Dong Shuwen, 2017, Tectonic history of the Ordos Block and Qinling Orogen inferred from crustal thickness. Geophys. J. Int., 210 (1): 303-320. doi:10.1093/gji/ggx163. [ go to the paper ... ].