Solid earth Tide The remaining terms are the tidal potential, UT GM P,(cos) R Rr U=GM* LR R Second form is often referred to as the vector tide model (convenient if planetary ephemeredes are available) 04/17/02 12.540Lec18 1104/17/02 12.540 Lec 18 11 Solid Earth Tide • The remaining terms are the tidal potential, U T. • Second form is often referred to as the “vector” tide model (convenient if planetary ephemeredes are available) UT = GM * R r R ⎛ ⎝ ⎜ ⎞ ⎠ ⎟ n = 2 ∞ ∑ n Pn (cosψ) UT = GM * 1 l − 1 R − R.r R 3 ⎛ ⎝ ⎜ ⎞ ⎠ ⎟