Jour Sc. Coll. Vol VII PI Kl. 



Z&^ Fig- 19 



I l-S ^ (1) and ('ij-Diiii liai Flurtiiatinn of Seismic Frequency soo %, 



at Gifii and Nagoya. ' -g Fig. 19. 



(51 — Diurnal Fluctuation of Seismic Frequency 



s g ,'/ \ (1) Oifu (1258 shocks). A. S ■ t "1 J 



" "■ (2) Na^;o.ya (572 ., ). / \ .1 '" "'*Pa°- 



stocks) 



ïifui») 



(2) 

 Xag..ya (X) 



M Hour luterTsJs. 



80 180- ,•■,■..■,•.•■,■■•■,... I 



0-1 a.m. 3-4 a.m. 8-9 a.m. 1-2 p.m. 6-7 p.m. 1MÎ p.m. 



, . . , Hour Intervals. ^^ Fig. 19 , (4)— Diumal Fluctuation of Seismic Frequency 



0-1 a.m. 3-4 a.m. 8-9 a, m 1.2 p.m. 6-7 p.m. U-12 p.m. || in Tok/O. , 



■.2 210 « 60 l'a <"^* shocks) 



J Fig. 19., (3) — Diurnal Fluctuation of Seismic Frequency -So / \ / \ (♦) 



in Japan. 



(3842 shocks) 



(3) 



Hour mterrols. H""' Interval». 



■ ■ ■ r ....... r- 20 . I ................ , 



0-1 a.m. 3.4 am 8-9 a.m. 1-2 p.m 6-7 p. m 11-12 lim 0-1 a.m. 3-4 a.m. 8-9 a.m. 1-2 p.m. 6-7 p.m. 11-12 p.m. 



