Illustration of Earth's interior. Seismologists may have determined the origin of a strange type of seismic wave. Michael Thorne, University of Utah ...

As their names suggest, ULVZs slow down seismic waves, ... For example, PcP waves begin as a primary wave (P-wave) and deflect at the CMB and return as a P-wave.

Complex interior: illustration showing the two different layers of the Martian mantle between the core and crust. Also shown is how the layers affect seismic waves detected by InSight. (Courtesy: IPGP ...

An illustration showing Earth’s inner structure. ... Now, Vidale and his colleagues have analysed seismic waves generated by 128 earthquakes off the coast of South America between 1991 and 2023.

Seismic waves generated by quakes and a meteorite strike on Mars allowed NASA’s InSight lander to collect data that helped reveal secrets of the Martian interior.

For example, PcP waves begin as a primary wave (P-wave) and deflect at the CMB and return as a P-wave. Other phases include such acronyms as PcS, PKIKP, PKJKP. and many others for describe ...