Fig. 1From: Historical and paleo-tsunami deposits during the last 4000 years and their correlations with historical tsunami events in Koyadori on the Sanriku Coast, northeastern JapanStudy site location. a Plate tectonic map in and around northeastern Japan. The star indicates the epicenter location of the 2011 Tohoku-oki earthquake determined by the Japan Meteorological Agency. SP Sendai Plain, IP Ishinomaki Plain. b Study area and geomorphology along the Sanriku CoastBack to article page