Seismic waves from one of those earthquakes ... The presence of hydrous silicates could also tell seismologists something about the speed of slab subduction in the region. The hydrous magnesium ...
The study of seismic waves provides evidence for the internal structure of the Earth, which cannot be observed directly. P waves are detected on the opposite side of the Earth. Refractions between ...
The heavier one sinks into the mantle. Traditionally, positive seismic wave speed anomalies in the mantle were attributed to “cold slabs” — remnants of subducted tectonic plates. Essentially ...