how does flat earth theory explain the tide

Additionally, using the spherical harmonic theory, tidal currents and their effects on rotation are determined for available numerical and altimetric tide height models. The lengthening of the Chandler wobble period by the pole tide is also re-computed using the author's full theory. The effects of both tidal inertia and relative angular momentum on Earth rotation (polar motion, length of day, 'nutation' and Universal Time) are presented for 32 long- and short-period ocean tides determined as solutions to the author's spherical harmonic tide theory.

The model also includes solid- earth effects which are frequency dependent as the result of both anelasticity at long periods and the fluid-core resonance at nearly diurnal periods.

The rotational model includes a frequency-dependent decoupled core, the effects of which are especially marked near retrograde diurnal frequencies and a fully dynamic oceanic response, whose effects appear to be minor despite significant frequency dependence. This article develops 'broad-band' Liouville equations which are capable of determining the effects on the rotation of the Earth of a periodic excitation even at frequencies as high as semi-diurnal these equations are then used to predict the rotational effects of altimetric, numerical and 32-constituent spherical harmonic ocean- tide models. Dynamic ocean- tide effects on Earth's rotation

How does flat earth theory explain the tide