UNCLASSIFIED 



Security Classification 



DOCUMENT CONTROL DATA - R&D 



(Security claasitication ol title, body of abstract and indexing annotation must be entered when the overall report is classified) 



1 . ORIGINATIN G ACTIVITY (Corporate author) 



Uo S. Naval Underwater Ordnance Station 

 Newport;, R. lo 



2a. REPORT SECURI TY CLASSIFICATION 



UNCLASSIFIED 



26 CROUP 



3. REPORT TITLE 



Preliminary St-'j.dies on the Turbiilent Characteristics of Ocean Waves 



4 DESCRIPTIVE NOTES (Type of report and inclusive dates) 



5 AUTHORfS; (Last name, first name. Initial) 



Shontlng, David H. 



6. REPORT DATE 



July 1965 



7a. TOTAL NO. OF PAGES 



23 



7b. NO. OF REFS 



8a. CONTRACT OR GRANT NO. 



b. PROJEC T NO. 



9a ORIGINATOR'S REPORT NUMBERfS; 



TM No. 3^2 



WEPTASK Assignment Noo 

 RU22-2E-OOO/219 1/R004-.03-01 



9b. OTHER REPORT N ofS^ f^ ny other numbers that may be aaaigned 

 thia report) 



10. AVAILABILITY/LIMITATION NOTICES 



Qualified requesters may obtain copies of this report from DDC . 



11. SUPPLEMENTARY NOTES 



12 SPONSORING MILITARY ACTIVITY 



BUWEPS - NUOS 



13. ABSTRACT 



This report presents the results of preliminary ocean wave studies made 

 in an endeavor to learn more about the turb-ulent characteristics of wind waves 

 in the open ocean.' 



A series of hypothetical wave models presented indicate a mechanism of 

 momentum transfer within the waves. 



Two series of wave motion measiirements were made, one from a Navy pier 

 in NarragaD.sett Bay and a second from Buzzards Bay Entrance Light Station. The 

 measurements were made to obtain rough data on particle velocity motions in 

 various sea states and to examine their variances, covarlances and respective 

 spectral properties. These preliminary measurements indicated that relatively 

 large amounts of wind-imparted momentum are transferred through the water 

 column by correlations of the wa.ve m.otions themselves. 



The values of the variances of the particle motions reflected the strong 

 exponential attenuation with depth. The auto-spectra clearly displayed the 

 fundamental frequencies of the wind waves and the low frequency swell. The 

 strong attenuations of the wind wave turbulence with depth is contrasted with 

 the weaker attenuation of the swell. 



DD ,^A°r.. 1473 



UT^'CLASSIFIED 



