380 



Alf Trolle. 



Øresund and Lille Belt were shut oil' by submarine ridges with depths 

 on the saddle of ca. 60 and ca. 130 m. (The saddle depth means the 

 depth below which no water can pass in by horizontal currents). 



The observations were taken from a sledge in the course of .May 

 1908, thus at a time of year when the average air temperature 

 was • — 8^, and when the thickness of the ice had reached its 

 maximum. 



According to the observations from the station at Maroussia 

 in May 1907 we therefore should have expected, that the water-masses 

 in the sounds in May 1908 had homogenous salinity down to a sim- 

 ilar depth as there (ca. 140 m.) and had been cooled down to the 



Tensity Z'ioo zs so 75 25 00 zs so 75 26 00 zs 

 Salinity %o 3I00 zs so 75 32oo zs 50 7s 53 00 zs 

 Teiiipejatiire.-2 ?,. ^ ** ? 'У *- -' 1 2^ 



75 



27.00 25 



so 



75 



28 00 



75 



3'*00 2S 



so 



75 



IS-QO 



e 



e +r 



2 



* 



С 



♦2° 



100 



^ 200 



.a 



^ Î00 

 400 



500 



if 









. 



> — ' 







с: 



-^ 























V 

















1.^_ 





■>. 



















„ 





ч 



















""~- 



о 



^г:. 



'"*■. 



^ 











h 



i^ 





■^ 

























'^. 



■* 











!s 

















"^л 















"ч 



\ 







^ 



il 



















^- 



■-^ 



•-* 











\ \ 







«SI. 



h" 























\ 









Sa 



1 f 



len 



S. 



























2hm. 



I/. 















< 



1 









































1 







































100 



zoo 



300 



400 



500 



Station LVIII. Store Belt. 



freezing point temperature corresponding to this salinity. This was 

 not the case, however, the homogenous ice-cold layer had a much 

 less thickness. 



There was a considerable difference in the hydrographical con- 

 ditions of the uppermost 75 m. in the spring of the two years 1907 

 and 1908, which was to some extent due to different meteorological 

 conditions, and also to differences in the marine currents and the 

 consequent difference in the amount of surface water, луЬ1сЬ had 

 circulated from the sea into the fjords and sounds in the course of 

 the winter. 



The following remarks may be appended to the various series. 



Series LVHI, Station Store Belt 7—8 June 1908. The station 

 lay at the inner end of a submarine fjord, which transects the Con- 

 tinental Shelf in the direction N. W. at ca. 75i^° N. L. and continues 

 southwards round the southern Koldewey Island (see bathymétrie 

 Chart, PI. XII). 



