Inner core composition paradox revealed by sound velocities of Fe and Fe-Si alloy

oleh: Haijun Huang, Lili Fan, Xun Liu, Feng Xu, Ye Wu, Gang Yang, Chunwei Leng, Qingsong Wang, Jidong Weng, Xiang Wang, Lingcang Cai, Yingwei Fei

Format: Article
Diterbitkan: Nature Portfolio 2022-02-01

Deskripsi

The origin of the observed low shear wave velocity in the solid inner core is unclear. Here, the authors report shear wave velocities of iron and iron-silicon alloy under Earth’s core conditions by shock compression and find that neither the effect of temperature nor incorporation of Si can explain observed low shear wave velocity in the inner core.