Solid earth tides Solid earth Tides are the deformations of the earth caused by the attraction of the sun and moon. Tidal geometry M R 04/17/02 12.540Lec1804/17/02 12.540 Lec 18 9 Solid Earth Tides • Solid Earth Tides are the deformations of the Earth caused by the attraction of the sun and moon. Tidal geometry M* P l R r ψ