text: These entities are a solution to a three-dimensional wave equation which itself is defined on the curl of the vector field of strain displacement.
full_question: These entities are a solution to a three-dimensional wave equation which itself is defined on the curl of the vector field of strain displacement. Because of this, their propagation obeys the continuity equation for incompressible media, and they cause no changes in volume. According to the Adams-Williamson equations, these waves have velocity equal to the square root of the shear modulus over the mass density. These waves can give rise to Love waves through interaction with a low-velocity surface zone. These waves cannot cross the Gutenburg core-mantle discontinuity; hence, their shadow zones after earthquakes provided evidence for a liquid outer core. For 10 points, name these transverse body waves generated during an earthquake that arrive after P-waves.
first_sentence: These entities are a solution to a three-dimensional wave equation which itself is defined on the curl of the vector field of strain displacement.
raw_answer: S-waves [or secondary waves or shear waves; prompt on "transverse waves"]