Fast Fourier Transform - Water levels

Water level spectrum Cell 1

Water level spectrum Cell 3

Water level spectrum Outer Harbour

Water level spectrum Inner and Outer Harbours

Notes:

Looking at the spectral analysis at various locations we can see that the 1 hour period water level oscillations are present at all the locations where we have installed a pressure logger

However, the biggest surprise is the magnitude we see in the Inner Harbour, which is at least twice of that of the Outer Harbour. (see figure bottom right)