Washover deposits related to tsunami and storm surge along the north coast of the Shimokita Peninsula in northern Japan

Progress in Earth and Planetary Science

Table 1 Historical tsunamis along the Pacific Coast in Hokkaido and Tohoku regions during 1611–2003 CE

Date [CE]	Tsunami name	Source	Magnitude (Utsu 2004)	Tsunami height (m)	Location of measured site
2003	Tokachi-oki	Off Tohoku	8.0	1.5–2.4¹	West and south of Shiriyazaki
1994	Shikotan-oki	Off Shikotan	8.2	< 1²	Northern part of the Shimokita peninsula
1968	Tokachi-oki	Off Tohoku	7.9	< 2²	East coast of the Shimokita peninsula
1960	Chile	Chile	9.5	1²	East coast of the Shimokita peninsula
1952	Tokachi-oki	Off Tohoku	8.2	(2)²	Hachinohe
1933	Showa-Sanriku	Off Tohoku	8.1	1²	Sekinehama
1896	Meiji-Sanriku	Off Tohoku	8.2	(3)²	Hachinohe
1856	Ansei	Off Tohoku	7.7	1.5³	Between Ohmazaki and Sekinehama
1843	Tempo	Off Nemuro	8.0	(2)³	Hakodate
1763	Horeki	Off Tohoku	7.7	(1)³	Hachinohe
1677	Empo	Off Tohoku	7.9	1.7–2.9³	Between Ohmazaki and Sekinehama
1611	Keicho	Off Tohoku	8.1	–
1741	Oshima-Oshima	Oshima-Oshima volcano	Related to volcanic event	–
1640	Komagatake	Komagatake volcano	Related to volcanic event	–

1: Tanioka et al. (2004); 2: Watanabe (1998); and 3: Tsuji et al. (2014)
The numbers in parentheses in “Tsunami height” column indicate the values at sites away from Sekinehama