. Annual data summary for 1983 CERC Field Research Facility. Oceanographic research; Water waves. where T = sec is a characteristic period provided by Datawell. The manufacturer states that this sensitivity decrease results in amplitude errors of less than 3 percent for oscillation (wave) periods less than 15 sec. Fig- ures A1 and A2 present curves for (DW) = /A/ - 1 , the Datawell-predicted sensitivity decrease error, and, as can be seen, the actual sensitivity does not decrease with period according to the Datawell relationship given in Equation A1. Difference Error (d) 4. This is the d
. Annual data summary for 1983 CERC Field Research Facility. Oceanographic research; Water waves. where T = sec is a characteristic period provided by Datawell. The manufacturer states that this sensitivity decrease results in amplitude errors of less than 3 percent for oscillation (wave) periods less than 15 sec. Fig- ures A1 and A2 present curves for (DW) = /A/ - 1 , the Datawell-predicted sensitivity decrease error, and, as can be seen, the actual sensitivity does not decrease with period according to the Datawell relationship given in Equation A1. Difference Error (d) 4. This is the difference (d) between the Datawell-predicted decrease in sensitivity error and that found from the actual buoy calibrations. 5. In Tables A2 through A5, DW (Datawell-predicted error) and d (difference error) are tabulated as a function of T (and frequency) for each buoy. Best accuracy would be obtained by choosing the calibration values nearest in time to the date of the measurements. 6. Since these error corrections are oscillation-period dependent, their application requires that the wave data be decomposed into amplitude. DATAWELL SPECIFICATION • 7 APRIL 1982 NOAA/ESO ? 8 NOVEMBER 1983 PERIOD. SECONDS Figure A1. Waverider 66966 predeployment and postdeployment calibrations A2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Miller, H. Carl; Grogg, William E; Leffler, Michael W; Townsend, C. Ray; Wheeler, Stephen C; U. S. Army Engineer Waterways Experiment Station; Coastal Engineering Research Center (U. S. ); United States. Army. Corps of Engineers. [Vicksburg, Miss. : U. S. Army Engineer Waterways Experiment Station ; Springfield, Va. : Available from National Technical Information Service]
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