106 



Atiaiitir water not I'ai- (iti'shoiv. Such a claim also was supported 

 ')y the siaface ohseivations made in tliis locality.-" 



SUMMARY 



March 25-29, i)uie Arctic water was found bathing the east slope 

 (»!;■ the hank between the TO-meter and 110-meter (38-fathom and 

 CO-fathom) depth. 8.*) miles north of the Tail. It lay on the edge 

 of the Bank in the form of a narrow band, with its influence not felt 

 eAeri 17 miles offshore, at station 381. thirty miles to the northward. 



STATION 383 



March 29 invest i<ia ted the w'ater column of the south central 

 parr of the Grand Bank (station 383). a locality wdiich of all 

 others in the Grand Bank region is most free from external dis- 

 nirliances (except from the westward), and thereby' most nearly 

 conforms to a closed tidal reservoir. It is true this locality is 

 susceptible sometimes to irregular bottom intrusion of arctic "water 

 but its persistency to efface such intermittent Arctic traces fully ju^ti- 

 hes the character identification "' local." 



The temperatures of 2.8° on the surface to 2.3° on the bottom 

 were too high for water from the north. The salinities of 32.8-+ 

 " '„„ on the surface to 32.779 "/\,o on the bottom were also too fresh 

 to accord with polar water, but classified it as pure Banks and 

 coastal. The uniformity of the temperatures and salinities, sur- 

 face to bottom, reflected a most complete state ol mixing. Avhicli 

 in a large measure was the result of an entire winter's convectional 

 cocjling. The water column, which lay over the central bank region. 

 wa> Avarmer March 29 than any of which there is previous record.-' 

 Thi> is attiibuted to the mildness of the 1923-2-t winter and tlu* 

 absence of ice.-' Consideration of the autumn records of 1923 and 

 those secui'ed March 29. 1924, justified the statement that no Arctic 

 water had flooded the central bank legion the winter of 1923-24. 



STATION 384 



On April 1, when •")'> miles north of the Tail and ."> miles offshore 

 of the eastern edge of the Hank, neai- bi'i-g Xo. 2,-''' we occupied sta- 

 tion 384. Berg No. 2 was near by. drifting south at the rate of 0.9 

 knot per hour. The upper 125 meters [i\S fathoms) of water was 

 colder than 0° tind fresher tliau 33.33 %„, while below this depth the 

 temperature rose abruptly to 3.4° and the salinity increased from 



- Sit OctniioKraplicrs report. March, 1923, p. 70. 



^Smitli, Edward II.: International Ice Observation and Ice I'atrol Service. U. S. 

 ('. G. Bull. No. 11. 192:J. p. 14S. 



''See Oci'nnoKrapli('r'.< report. March. 1024, p. 07. 

 :•' See iceher.n cliart R. 



