Seismology of the Earth's deep interior
Seismology of the deep Earth refers to studying the Earth's lower mantle and core using various seismological techniques. Seismology is the powerful tool to study the Earth's interior because the waves generated during earthquakes sample different depths and regions in the Earth's interior and carry the information about structural properties along their paths, which is recorded in the form of seismograms.
The motivation for studying the deep Earth's interior using seismology is that it provides the best insight in the dynamic processes that are happening thousands of kilometres beneath the surface. Of particular interest are investigating processes at the core-mantle boundary, and heterogeneity/anisotropy in the inner core using seismic body waves.