Fig. 1From: Washover deposits related to tsunami and storm surge along the north coast of the Shimokita Peninsula in northern JapanStudy site. a Location of the Shimokita Peninsula. Ha: Hachinohe. Hk: Hakodate. Ko: Komagatake volcano. Os: Oshima-Oshima volcano. To: Towada volcano. SC: Sanriku Coast. HC: Hidaka Coast. Star denotes the epicenter of the 2011 Tohoku-oki earthquake. Rectangle indicates area represented by (b). b Northern Shimokita Peninsula. Shaded relief map is based on a 10-m-mesh digital elevation model (DEM) from the Geospatial Information Authority of Japan (GSI). c Map of the Sekinehama Coast and vicinity. Contours are based on the 5-m-mesh DEM from GSI. Intervals of gray and black contours are 1Â m and 5Â m, respectively. Curving arrow denotes the channel and flow direction of the Bitsuke RiverBack to article page