On the Effect of Topograiiby on the Precipitation in Japan. 



9 



A full discussion of these characteristic distributions will be 

 given in the later part of this paper. Here, it may suffice to draw 

 the attention of the readers to the remarkable mode of distribution 

 in which the influence of topography plays an important rôle. 



5. Turning our attention to the amount of the yearly fluctu- 

 ation, the most prominent feature is the difïerence of the mean 

 anomalies on the both sides of the land, the Japan Sea side 

 showing generally less fluctuation than the Pacific. On the latter 

 side the amount is least in II and greatest in VI, while on the 

 Japan Sea side it is the least in V. 



In Table I, we have given the yearly amount of precipitation 

 also in percentages of the mean value and besides, the percentage 

 fluctuation of the yearly percentage values are given in the next 

 line. We reproduce here in Table IV. the mean anomalies of the 

 percentage lvalues for the six regions. On the Pacific side the 



Table IV. 



anomaly is the least on the northern part of Japan whereas in the 

 Japan Sea side it is least in the Southern. While the mean values 

 of the anomalies of the both sides are not very different for the 

 different parts, the contrast between the both sides is most 

 prominent in the southern part. 



G. The mean of the amount of precipitation fur the Japan 

 Sea side I, III, V is 203 and for the Pacific side II, IV, VI 195. 

 The difference is not remarkable. On the other hand, the mean 

 anomaly for the Japan Sea side is 7.7 while is it 10.3 for the 

 Pacific. Thus it appears that the Pacific side is generally more 

 "sensitive" to the main causes of the fluctuation, among which 



