Calibration and Performance of the Pressure and Temperature Sensors in the Coastal Leasing, Inc., MiniSpec Directional Wave Gauge

摘要

The five MiniSpec directional wave gauges delivered by Coastal Leasing, Inc., to Texas A&M University in April 1992 contained or quickly developed a number of unrelated problems, including sensor malfunctions, electronic noise, signal clipping, warm-up transients in the ICS pressure sensors, and lack of calibration for the effect of temperature on the pressure sensors. The minimum wave height that the MiniSpec can detect was calculated using linear wave theory and the instrument's resolution and depth. The theoretical limitations suggest that two of the deployment sites must be moved to shallower locations and two others should be moved if protected locations exist. The instrument's field performance was evaluated by analyzing the wave spectra from the April 7-9, 1993, period at three sites. The passage of a weather front is reflected in the evolution of wave height and period as seen in the wave spectra. The report does not address the current velocity sensor and directional wave measurement capability of the MiniSpec.