Fig. 3From: Historical and paleo-tsunami deposits during the last 4000 years and their correlations with historical tsunami events in Koyadori on the Sanriku Coast, northeastern JapanAerial photographs around Koyadori before and after the 2011 Tohoku-oki earthquake. Aerial photos (a)–(d) were taken on September 1977, March 2011, June 2011, and October 2012, respectively, by the Geospatial Information Authority of JapanBack to article page