1899] Some IlydrogTaphical Eesults. 9 



From the above might be concluded that the temperature 

 differences scarcely exceed 0°,6 C, nor does salinity show any 

 great variations. Upon the whole, the observations made till now 

 are pointiiig at a rather constant bottom temperature in the deep 

 channels of the western fjords, and in the case of most of them 

 that temperature lies between 6° and 7° C. The region of greater 

 changes both of temperature and salinity extends from the surface 

 downwards towards 200 m. — There is consequently not a little 

 likeness between the conditions of — for instance the Byfjord of 

 Bergen and the Vestfjord. There is however the difference that, 

 while the Vestfjord in summer is filled with large masses of Grulf- 

 stream water, the Byfjord basin gets no greater addition from it 

 than that salinity may sink a little under 35 %o. This fact I 

 ascribe to the circumstance that the connection of the Byfjord with 

 the Ocean is not very deep, and that the Byfjord basin is also so 

 small, that it cannot receive such large masses of ocean water, 

 that the latter can keep its character unchanged during the process 

 of mixing with the fresher inshore water. The case of the Tranø- 

 deep is quite different. Through the wide opening of the Vestfjord 

 it is connected with the Ocean by a deep-level channel, and the 

 incoming masses of water have a large space to expand upon. 

 Eather similar is the case of the Korsfjord, in the mouth of which 

 (between Stensnæs and Hilderen, 60^9' N., 5"5' E.) I measured Sept. 

 99 at 570 m. Further up the fjord (between Lauerø and Korsnes, 

 60° 10', 6N., 50 15', 7 E) the depth was found to be 680 m. In 

 the channel off the mouth (60° 8', 4° 41', 2) the bottom was reached 

 at the depth of 340 m. 



Judging from the Norwegian Government chart of this district, 

 the Korsfjord basin is connected with the Norske Rende by a 

 transverse channel the bottom of which scarcely anywhere lies as 

 high as 200 m. from the surface of the sea. A hint about the more 

 intimate oceanic connection of the Korsfjord one gets already from 

 the circumstance that the salinity of the deep water in the month 

 of September proved to be somewhat greater in the Korsfjord than 

 in the Byfjord. 



Byfjorden Korsfjorden 



20/^ 1899 ''Vq 1899 



D. Temp. S. D. T. S. 



250—450 m. 7,25—6,95 34,967oo 250—500 6^9— 6^,7 35,167oo 



