1. Vertical motion detector

2. In a vertical Chewing pattern, the jaw moves up and down in a vertical motion

3. Alternatively, the tether (5) may remain in place, and tensioned to limit vertical motion of the buoy.

4. To compensate for the resulting "excess," vertical motion may result: upward forcing if Convergence is at low levels, or downward forcing (subsidence) if Convergence …

5. Changes in relative sea level have been studied as a basis for estimating vertical motion of the crust, also measured directly from the Global Positioning System (GPS) and absolute gravity measurements.

6. The slices are arranged in an overlapping manner in the frames, advantageously with a vertical overlap my which is equal to or greater than a maximum absolute length of a vertical motion vector.