Table 1 

 Spectral Band and Peak Period Specifications 





















Corresponding 



Period 



Assoc 



iated 







Upper Limit 



Period, Lower 



with Centi 



er 



Periods Not 



Band 



of Frequency 



Limit of Band 



Frequency of 



Band 



Reported 



Number 



Band, Hz 



sec 





sec 





sec 



6 



0.064 



15.52 





17 





15, 16 



7 



0.075 



13.30 





14 





13 



8 



0.086 



11.64 





12 







9 



0.097 



10.34 





11 







10 



0.107 



9.31 





10 







11 



0.118 



8.46 





9 







12 



0.129 



7.76 





8 







13 



0.140 



7.16 





7 







14 



0.150 



6.65 





7 







15 



0.161 



6.21 





6 







16 



0.172 



5.82 





6 







17 



0.183 



5.48 





6 







18 



0.193 



5.17 





5 







19 



0.204 



4.90 





5 







etc 















Water Level Data 



Collection 



46. The water level information was obtained from a NOS tide gage which 

 produced a digital paper tape of instantaneous water levels sampled continu- 

 ously at 6-min intervals. At the end of each month, the paper tape was re- 

 moved from the recorder and mailed to NOS in Rockville, Md., for analysis. 

 Analysis 



47. The digital paper tape records of tide heights taken every 6 min 

 were analyzed by the Tide Analysis Branch of NOS. An interpreter created a 

 digital magnetic computer tape from the punch paper tape, which was then pro- 

 cessed on a large computer. First, a listing of the instantaneous tidal 

 height values was created for visual inspection. If errors were encountered, 

 a computer program was used to fill in or recreate bad or missing data using 

 correct values from the nearest NOS tide station and accounting for known time 

 lags and elevation anomalies. The data were plotted and a new listing was 



25 



