Title: The Earthquake in Japan
Author(s): Joseph S. Ruble
Publication: Journal Proceedings
Appears on pages(s): 210-220
The first earthquake shock on September 1, 1923, was at 11.50 a. m., the second about ¾ of a min. later, the third about 3 ½ min. later, and the fourth 11 min. later. The maximum intensity of the shock resulted in a horizontal motion, as recorded at the Imperial University in Tokyo, of 5 ½ in.