3. Measurement and prediction
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TL;DR
‘Measurement and prediction’ outlines the ways in which tides and tidal currents can be measured, and considers the standard method of analysing tidal data using a curve-fitting procedure known as harmonic analysis.
Abstract
‘Measurement and prediction’ outlines the ways in which tides and tidal currents can be measured, and considers the standard method of analysing tidal data using a curve-fitting procedure known as harmonic analysis. Tides, unusually for natural events, can be forecast with great accuracy for years in advance. The ability to do this and make people safer at sea is probably the greatest practical success story of the science of physical oceanography. There are two aspects of the problem to be considered: the rise and fall of the level of the sea, which we shall call the tide; and the horizontal flow of the water, called tidal streams or currents.