Shear-Coupled Pl-Waves
Shear-Coupled Pl-Waves :
This is a long-period wavetrain that follows S for distances up to about 800. It has been explained as being due to the coupling of S waves with a leaking mode of the crust-mantle waveguide, i.e., PL-waves. The coupling of PL-waves with SS and SSS has also been observed
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