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Therefore it is no wonder that Jim doesn't see any
evidence of a tidal bulge in the oceanic tidal data that he has ammassed.
The contribution of the (highly underdamped) oceans to the tidal bulge is too
small to show up in the time series for the ocean level at a typical
coastline which is dominated by other undamped resonant/sloshing and
continental reflection effects as well as extraneous wind effects, seasonal
ocean current effects, etc. I suspect that if the time series for the ocean
height in the middle of an ocean was Fourier analyzed and its power spectrum
taken, that there would be a significant spike located at the lunar driving
frequency which would correspond to the presence of at least some of the
tidal bulge being present in the oceans.