Seismic Structure and Dynamics of the Earth’s Core
We invert far-field full waveforms sampling the upper regions of the Earth’s solid iron inner core for precise seismic structure. This information is then used to infer dynamics of Earth’s core.
The Deep Earth System
Earth’s solid iron inner core is an enigmatic body located at a depth of 5153 km from the surface. It is actively crystallizing from the liquid iron outer core at a rate of about 1 mm/yr through secular cooling and pressure-freezing, which provide thermal and chemical energy to run the Geodynamo – convection in the liquid outer core that induces the Geomagnetic field. Also, heat transported through this process is at least partially contributing to convection in the mantle, which in turn drives plate tectonics. Thus, different domains in the interior of the Earth – from the centre to the surface – appears to work in unison, or in other words, as coupled systems.