昭和8年9月21日の能登地震踏査報告

On Sept. 21, 1933, a strong earthquake occurred in the middle part of Noto Peninsula. The region in which damage was done, was limited within a small area containing a few villages. In the strongly shaken area 3 persons were .killed and 11 severely wounded, while a number of houses were partially destroyed. The epicentre was determined from the distribution of the total amount of damages at different villages, its position being situated at about lat. 37°4'N and long. 136°57'E (Fig. 1). Seismic intensity near the epicentre was probably VIII or IX in the Rossi-Forel, scale. Ground disturbances such as marginal collapse, earthquake fissures, and local subsidence of soft ground were found over the epicentral area. At some places change in the underground water has occurred immediately after the earthquake. There occurred rotational motion of tomb-stone and overturning of tomb-stone, stone lantern, etc. (Fig. 2, Fig. 3) The initial strong earthquake and the subsequent after-shocks were generally accompanied by detonative sound