Recurrent Liquefaction Induced by the 2011 Great East Japan Earthquake

Abstract

The M w 9.0 destructive earthquake that occurred March 11, 2011, in Japan was associated with widespread liquefaction within a 500-km long zone that extended from Iwate to Kanagawa Prefectures in the eastern part of Japan. Based on reconnaissance surveys of the Great East Japan Earthquake of March 11, 2011, recurrence of liquefaction at the same sites was identified at sites where liquefaction had occurred during the M J 6.7 Chibaken Toho-oki earthquake of December 17, 1987; the surveys also compared observed liquefaction effects with those of the 1987 earthquake.