Resolving the Structure and Rotation of the Inner Core

小行星9706201 这项研究扩展了以前关于地球内核自转差异的发现。 波形建模和岩心相位的差分时间测量（PKP）已经成功地导致了对内核的P波各向异性、结构和旋转的新见解。 使用具有共同源的相对观测（波形、差分时间）的方法消除了对源起源时间、激发、错位以及源和接收器下的地壳和上地幔中的速度不确定性的关注。 将汇集更多的差分数据以在旋转内芯的框架中反演内芯的各向异性/衰减结构。 ***

9706201 Song This research involves the expansion of previous findings concerning the differential rotation of the earth's inner core. Waveform modeling and differential time measurements of core phases (PKP) have successfully led to new insights on both the P- wave anisotropy, structure and rotation of the inner core. The approach of using relative observations (waveforms, differential times) with a common source eliminates the concern about uncertainties in source origin time, excitation, mislocation, and velocity uncertainties in the crust and upper mantle under the source and receiver. More differential data will be assembled to invert the anisotropy/attenuation structure of the inner core in a frame of a spinning inner core. ***