Reply to Yao et al.'s comment on “Origin of temporal changes of inner-core seismic waves”
Reply to Yao et al.'s comment on “Origin of temporal changes of inner-core seismic waves”
复制标题
DOI：
10.1016/j.epsl.2020.116639
复制
发表时间：
2021
影响因子：
5.3
通讯作者：
Yi Yang-;Xiaodong Song
中科院分区：
文献类型：
--
作者：
Yi Yang-;Xiaodong Song
在本答复中，我们解决了姚等人提出的主要问题。 （2020）并进行额外的分析，特别是地震台时钟问题和地震深度的影响。我们表明，尽管深度是一个需要考虑的重要问题，但我们的双峰的深度差异太小，不显着。广泛的分析重申了我们之前的结论：（1）内核（IC）时间变化主要来自内部（而不是其表面），并且可以排除IC表面作为时间变化唯一来源的提议； (2) 迄今为止对于时间变化最合理、最简单的解释是 IC 差分旋转； (3)对于小于0.15秒的时间变化的研究，应避免使用以往研究中基于绝对时间的方法，除非时钟问题得到解决。
In this reply, we address the main issues raised by Yao et al. (2020) and conduct additional analyses, particularly on the seismic station clock problems and the influence of earthquake depth. We show that although the depth is an important issue to consider, the depth difference of our doublets is too small to be significant. Extensive analyses reaffirm our previous conclusions that (1) the inner core (IC) temporal changes come mostly from the interior (rather than its surface) and the proposal that the IC surface as the sole source of the temporal changes can be ruled out; (2) the most reasonable and simplest explanation so far for the temporal changes is an IC differential rotation; and (3) absolute-time based method in previous studies should be avoided for studies of temporal changes of less than 0.15 s unless the clock issue is resolved.