Seiches in Somo Lakes of Japan 



35 



Shiotsu. 



From two series of observations made during Aug. 8-9 and 

 Sept. 12-13, we have found the periods given below. 



TABLE 20. 



SHotsn. I. 



Ul. 



ru. 



m. 



39.2 X 1 



30.2 X 3 



27.3 X 2 



30.5 X 4 



29.9 X 3 





TABLE 21. 



Shiotsu. ir. 



m. 



m. 



m. 



37.7 X 2 



30.8 X 3 



20.3 X 4 



35.4 X 2 



30.4 X 7 



18.6 X 3 



32.5 X 4 



28.5 X 6 



17.7 X 4 



31.7+ 5 



20.5 X 3 



17.3 X 2 



As the most significant motion at Shiotsu we have therefore one, 

 of which the period is 30.4 minutes. This motion appeared very 

 distinctly on tlie evening of Sept. 12th. and lasted till the morning 

 of the next day. 



Wani. 



Here wo could obtain only two motions 18.3x5 and 8.0x5 

 during our stay Aug. 10-11. 



