What acoustic phenomenon causes the shadow zone for P-wave arrivals at epicentral angles between 105° and 140°?
A) refraction
B) reflection
C) dispersion
D) attenuation

Question

Quizplus · Accepted Answer

Refraction of P-waves in the Earth's interior, particularly at the core-mantle boundary, leads to the creation of a shadow zone where these waves are not detected.

What Acoustic Phenomenon Causes the Shadow Zone for P-Wave Arrivals