Ocean Tides. Why tides occur. Refers to cyclic rise and fall of sea water. Variations in gravitational attraction between the Earth, moon and sun. The Moon. Primary factor that controls the rhythm and height of the tides 2 tidal bulges due to gravitational attraction
Gary D. Egbert, Richard D. Ray and Bruce G. Bills, “Numerical modeling of the global semidiurnal tide in the present day and in the last glacial maximum”. Journal of Geophysical Research, Vol. 109, March 2004.