Sn-waves  search
BTelastic waves
 .seismic waves
 ..body waves
 ...Sn-waves
RTseismology
 upper mantle
 waves
 Mohorovicic discontinuity
 continental crust
 Pn-waves
 S-waves
SNRefracted along Mohorovicic discontinuity. Added to Thesaurus in 1989.