Routine measurement of heave displacement spectra from large discus buoys in the deep ocean

The Data Buoy Office of the National Oceanic and Atmospheric Administration (NOAA) deployed two 12m diameter discus buoys in the deep ocean in early December 1974. This paper presents a description of the wave measurement hardware and software used on-board the two buoys, and the additional data processing performed on shore. The at-sea comparison tests performed to validate the data are analyzed and results shown. The dissemination of the wave data in the operational mode is described as well as some of the problems encountered in making the system work properly. Future plans for wave measurements based upon what has been learned from these experimental platforms are also presented.