Extended Data Fig. 9: Scattering strength and porosity along the radius of the inner core in the present day.
From: Enhanced inner core fine-scale heterogeneity towards Earth’s centre

a, Global average scattering variation along the inner core radius. Inner core porosity structure based on three growth models: b, conventional inner core growth34, c, inner core nucleation delayed to 0.12τic, and d, inner core nucleation delayed nucleation delayed to 0.18τic. Yellow lines indicate 500 km below ICB, where the scattering strength increases globally.