Changes

Using seismic tomography with earthquake waves, the interior of the Earth has been completely mapped to a resolution of several hundred kilometers.  This process has enabled scientists to identify convection cells, mantle plumes and other large features of the inner Earth.

Using seismic tomography with earthquake waves, the interior of the Earth has been completely mapped to a resolution of several hundred kilometers.  This process has enabled scientists to identify convection cells, mantle plumes and other large features of the inner Earth.