R. D. van der Hilst uses seismology to investigate Earth's interior. His teaching develops the connection between measured seismic arrivals and wave propagation, while his research includes global seismic tomography used to constrain mantle circulation.[ref]
Essentials of Geophysics: Seismology by R. D. van der Hilst. Course notes: seismic propagation and Earth structure
[ref]Evidence for deep mantle circulation from global tomography by R. D. van der Hilst and others. Abstract: mantle structure from global tomography
The inferential step is important: a wave-speed anomaly is an observation-dependent model, and interpreting it as temperature, composition or flow requires additional physical assumptions.
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