Tidal Investigations 



13b 



Synopsis of Tidal Observations at Winter Harbour, Melville Island, taken by 

 Capt. J. E. Bernier, C.G.S. Arctic, assisted by W. E. W. Jackson, M.A., 

 J. G. McMillan, B.A.Sc, and Geo. Braithwaite, first mate. 



The figures in the column headed "Ranges" show the rise and fall of the 

 tide on the days of greatest and least range in the month. The resulting means 

 are thus the best values for the Spring range and the Neap range. 



It will be noticed that there are times, when the moon's declination is high, 

 that there is a marked diurnal inequality. This inequality is eliminated by the 

 above method. 



In the column headed " Moon's distance," P is for Perigee and A for Apogee, 

 -when these occur at the Spring or Neap tides respectively, as indicated. 



Establishment. — At Winter harbour. Time errors are noted and accepted 

 .as reliable. Value deduced from liini-tidal intervals in five lunar months, 

 taken in sets of four at each new and full moon to eliminate diurnal inequality, 

 .and averaged in pairs at full and change to eliminate semi-monthly inequality. 

 Einal mean, 12 h. 01 m. 



