O. Nordgaard. 



[No. 8 



On Feb.i) 24th 1897 (5, Hyclr. Tables p. 16, no. 486) I founcl 

 at 200 m., t. = 6,2, s. = 34,96 Voo- 



For the winter of 1899 my measurements give the following 

 results : 



Tranødybet 1899. 



Depth 



72 



''h 



^73 



m 



metres 



Temp. 

 CO 



Salinity 



Temp. 

 CO 



Salinit}' 

 %o 



Temp. 

 CO 



Salinity 



0/ 



"oo 







20 



50 



80 



100 



150 



200 



250 



300 



400 



500 



600 



630 



2,5 



2,7 

 2,8 

 4,6 

 5,5 

 6,5 

 6.4 

 6,4 

 6,3 



11 

 11 



33,50 



33",74 

 34,15 



34.89 

 35,03 



11 

 35,14 



11 

 11 



11 



1,5 

 1,6 



3,0 

 4,2 

 4,2 

 6,5 

 6,4 

 6,5 

 6,5 



6,3 



11 



33,58 

 33,53 

 S3,84 

 34,03 



34,75 

 34,94 

 35,06 



11 

 11 

 11 



y 



1,4 

 1,5 



3,0 



5,0 

 6,2 

 6,5 



6,5 



33,41 

 33,53 

 33,84 



34,34 

 34,75 



35,00 



3500 



According to this, there must in the Tranø-deep, which is the 

 deepest part of the Vestfjord (640 m.), prevail exceedingly constant 

 natural conditions. There is indeed reason to suppose that during 

 the last 25 years the temperature of the deeper layers, has not 

 changed as much as 0°,5 C. Even at the depth of 200 m. the 

 variation is extremely small, and 200 m. may rather be considered 

 as the boundary of the stable bottom layer. 



A similar stability has been proved for the Scagerack deep. 

 According to Petteeson and Ekman (2,p. 46) was found: 

 1872 by the Pommerania Expedition at 500—600 m. t. = 5^0 C. 



1880 



Hansteen 



Swedish winter 



58^5' N.631m., t. = 5,0 „ 



9^0' E.' 

 58^28' 50"630m., t. = 4,9 „ 



9043' 35" 

 580 o'25" 570 m., t. = 4,9 „ 



8^57' 

 58«12'15"625 m., t. == 4,9 „ 



90 22M5" 



— 645 m., t. = 4,9 „ 



1) In the dates column appears wrongly April for February, 



