COUNCIL-MARCH 1920-RBSOLUTIONS — 30 — 



Resolution 5. 



It is recommended to Great Britain that the whole time services of one vessel for one 

 complete year be allocated for the study of the hydiography and plankton of the entrance to 

 the northern North Sea and that the area so investigated should be extended to the Norwegian 

 Coast. At the same time it is recommended that Sweden should similarly examine the Skagerak. 



Resolution 6. 



It is recommended that observations on Lightships in the North Sea should be carried out 

 on a similar scale to that adopted in 1913. 



Resolution 7. 



It is recommended that France be invited to participate in the carrying out of resolution 

 (6) by observations of surface salinity and temperature at the Sandettie Lightship. 



Resolution 8. 



It is recommended that the study of submarine waves be continued by Norway and Swe- 

 den on as intensive a basis as possible. 



Resolution 9. 



It is recommended to Great Britain that intensive current measurements lasting at 

 least one full year be carried out by Great Britain with the object of tracing the monthly 

 fluctuations of the Resultant Current from the English Channel into the North Sea, and that 

 this investigation be closely associated with meteorological observations. 



Resolution 10. 



It is recommended that the following material be worked up in the Bureau during the 

 year 1920—21: — 



(a) Mean sea temperatures, 



(b) Ice and its influence on sea temperature, 



(c) Hydrographical Bulletin for 1915 — 19. 



Resolution 11. 



It is recommended that continuous observations from Lightships and Lighthouses in 

 the Baltic be undertaken in the way proposed before the war. 



Resolution 12. 



It is recommended that a study of the conditions of the ice in the Baltic be undertaken 

 on such a scale that the distribution and the amount of ice can be followed. 



