APPENDIX A: WAVERIDER BUOY CALIBRATION INFORMATION 



1. This appendix presents the 1983 calibration information required for 

 the Waver ider buoy gages. Table A1 lists the operational dates of each gage, 

 as well as the predeployment and postdeployment calibration dates. 



Table A1 



Operational/Calibration Dates for the WaverideV Buoys 



Used at the FRF During 1983 



Serial Number 

 66966 



67715-7 



Operational 



1 January 1983- 

 29 August 1983 



29 August 1983- 

 31 December 1983 



Calibrated 



7 April 1982 



8 November 1983 



1 December 1982 

 20 March 1984 



2. The buoys were calibrated either at the National Oceanic and 

 Atmospheric Administration (NOAA) Engineering Support Office (ESO), Wave 

 Instrument Facility (Ribe 1981),* or at Adamo Rupp Associates in Solana Beach, 

 California. Calibration results are presented in terms of two factors: 



(a) the Datawell-specified decrease in electronic sensitivity as a function of 

 oscillation period error, and (b) a difference error based on deviations from 

 (a) found during the calibrations. These corrections and their application 

 are discussed below. 



Datawell-Predicted Decrease in Sensitivity Error (DW) 



3. Waverider buoy sensitivity /A/ for buoy electronics decreases with 

 increasing period T of sinusoidal vertical motion according to Datawell as 

 follows : 



/A/ = -=: 



(A1) 



* References cited in this appendix are included in the References at the 

 end of the main text. 



A1 



