Seiches in Some Lakes of Japan. 



87 



jL' = 10.2x10' cm., 

 from which by Merian's formula the following values for the 

 periods are obtained, 



t' = 10.3 minutes 



r-11.2 „ 



These are in close argeement with the values deduced from the 

 model but somewhat exceed the observed periods. As our station 

 Mukötöya is situated near the nodal line for t", it is very probable 

 that our observed period 9.29 minutes corresponds to the uninodal 

 seiche t" with an E-W nodal line. 



