Long Waves in Canals and Standing Waves in Closed Basins 195 



The examination of the individual records showed that it is not uncommon 

 for the oscillations to occur in a row of three or four and more successive 

 waves and attain in the Gulf of Finland a range of over 1 m. We will give 

 as an example the record from 10 to 15 December 1932 illustrated in Fig. 83, 



Oomesnds 



Ystod 

 Kungsholmsfort 



Wdmemuncte 

 Marienleiichte 



Stolpmlinde 



Fig. 83. Level of the Baltic measured by various gauges from 10 December 00 h (G.M.T.) 

 to 15 December 1932, 10 h (G.Neumann). 



which can be considered as particularly typical of the uni-nodal oscillation 

 of the system Baltic — Gulf of Finland. In Koivisto the range of the first wave 



13* 



