The measurement of wave heights by means of a float in an open‐end pipe

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Abstract
A series of experiments was performed to test the possibility of using OPEN‐end pipes with float‐type recorders for measuring wave heights, for the purpose of applying these data to the planning of coastal engineering structures. The main problem was one of resonance in the tubes. This was particularly pronounced in actual installation for wave periods of from one to six seconds. A mathematical analysis has been made for the case of a train of waves of constant period. It was shown that the hand of frequencies encountered in the ocean would make it quite difficult if not a practical impossibility to analyze data obtained by this method.

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