1974年伊豆半島沖地震による家屋の被害調査の報告

A summary of an investigation on the damage to buildings caused by the Izu-Hanto-oki earthquake of 1974 is as follows: (1) The degree of damage to buildings was more severe in coastal districts like Irozaki, Nakagi, Iruma, Mora and Koura of Minami-izu-machi than in an inland district. (2) The primary causes of the damage to buildings were a landslide on Mt. Shirohatayama at Nakagi, uneven settlement of the foundation and breaking of the fill-up ground at Iruma, and the direct influence of a pre-existing fault at Irozaki. (3) AtIruma, it was observed that the buildings of an earthquake resistant design suffered little damage except damage due to foundation failure.1974年伊豆半島沖地震調査概