Summary

Different data components of teleseismic waveforms are related by transfer functions that depend only on receiver-side structure. This is the common basis of a number of teleseismic techniques, including receiver functions and shear-wave splitting analysis. Common trace misfits used in these analysis techniques are shown to be equivalent to band-limited comparisons of real and synthetic transfer functions. The data deconvolution used in receiver function analysis leads to reduced structural resolution compared to direct trace-based misfits such as cross-convolution, with direct transfer function modelling of a data trace having the particular advantage of a physically meaningful misfit. Having established that the inter-trace transfer function contains all available structural information, the sensitivity of transfer functions to structure is examined for a series of teleseismic scenarios. Transfer functions for the teleseismic P coda show a strong sensitivity to shallow low-velocity structures such as sedimentary basins; the Sp precursors used in S receiver functions are less affected. Examination of transfer functions for shear-wave splitting shows that response complexities occur at frequencies too high to be observable in teleseismic studies, and that the dominant control on the response is the splitting intensity.

中文翻译：

---

地震数据组件之间的传递函数

概要

远震波形的不同数据分量与仅依赖于接收器侧结构的传递函数相关。这是许多远程地震技术的共同基础，包括接收器功能和剪切波分裂分析。这些分析技术中使用的常见迹线失配显示为等效于实函数和合成传递函数的带限比较。与基于直接迹线的失配（例如交叉卷积）相比，用于接收器功能分析的数据反卷积导致结构分辨率降低，其中数据迹线的直接传递函数建模具有物理上有意义的失配的特殊优势。确定迹线间传递函数包含所有可用的结构信息，针对一系列远震情况，研究了传递函数对结构的敏感性。远震P尾波的传递函数对浅层低速结构（如沉积盆地）表现出强烈的敏感性。S接收器功能中使用的Sp前驱物受到的影响较小。对剪切波分裂的传递函数的研究表明，响应复杂性出现在太高的频率下，无法在远震研究中观察到，并且响应的主要控制因素是分裂强度。