UNCLASSIFIED 



Security Classification 



DOCUMENT CONTROL DATA - R&D 



(Security classilication ol title, body ol abstract and ir^dexing anno(a(/on must be entered when the overall report is classified) 



1 ORIGINATIN G ACTIVITY (Corporate author) 



U.S. Waval Oceanographic Office 

 Oceanographic Prediction Division 

 Washington, D.C. 20390 



2a. REPORT SECURI TY CLASSIFICATION 



None 



2 fc GROUP 



n/a 



3. REPORT TITLE 



FROST DEGREE DAY, RELATED ICE THICKI'IESS CURVES, AND HARBOR FREEZEUP AITO BREAKUP 

 DATES FOR SELECTED ARCTIC STATIONS (U) 



4. DESCRIPTIVE NOTES (Type of report and Indus 



Ice Research 



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



KNISKERN, FRANKLIN E. 

 POTOCSKY, GABRIEL J. 



6. REPO RT DATE 



JULY 1965 



I U NO. OF PAGES 



123 



7b. NO. OF REFS 



11 



J a. CONTRACT OR GRANT NO. 



n/a 



b. PROJECT NO. 371-01 



c. G - 7600 Series 



9a. ORIGINATOR'S REPORT NUMBERfSJ 



TR-60 



nber3 that may be assigned 



n/e 



10. AVAILABILITY/LIMITATION NOTICES ^^ distrlbut lon of thls publicatlon is controlled. 



Qualified DDC users shall submit requests for copies to the: Commander, U.S. 

 <Iaval Oceanographic Office, V7ashington, D.C, 20390, ATTN: Code UOOO. 



11. SUPPLEMENTARY NOTES 



12. SPONSORING MILITARY ACTIVITY 



U.S. Naval Oceanographic Office 

 Washington, D.C. 20390 



13. ABSTRACT 



Frost degree day data and sea ice information for selected stations throughout 

 the Arctic are described. Related frost degree day and ice growth curves are 

 graphically illustrated. Harbor breakup and freezeup dates are furnished for 

 selected stations, (u) 



DD 



1473 



UNCLASSIFIED 



Security Classification 



