English: Historical tsunamis in the Sanriku area and selection of areas affected by the 2011 Tōhoku tsunami. (Source: Anawat Suppasri, Nobuo Shuto, Fumihiko Imamura, Shunichi Koshimura, Erick Mas, Ahmet Cevdet Yalciner: "Lessons Learned from the 2011 Great East Japan Tsunami: Performance of Tsunami Countermeasures, Coastal Buildings, and Tsunami Evacuation in Japan", Pure and Applied Geophysics, 170, (6-8), 2013, p. 993–1018, here p. 994, figure 1, DOI=10.1007/s00024-012-0511-7, online published: 7. July 2012. Modified and combined with: Nobuhito Mori, Daniel T. Cox, Tomohiro Yasuda, Hajime Mase: "Overview of the 2011 Tohoku Earthquake Tsunami Damage and Its Relation to Coastal Protection along the Sanriku Coast", Earthquake Spectra, 29 (S1), 2013, pp. 127-143, DOI=10.1193/1.4000118, here p. 131, fig. 3. And combined with: Tadashi Nakasu, Yuichi Ono, Wiraporn Pothisiri: "Why did Rikuzentakata have a high death toll in the 2011 Great East Japan Earthquake and Tsunami disaster? Finding the devastating disaster’s root causes", International Journal of Disaster Risk Reduction, Band=27, March 2018, pp. 21-36, DOI: 10.1016/j.ijdrr.2017.08.001, online published on 15 August 2017, here p. 23, fig. 1. Cf. Akemi Ishigaki, Hikari Higashi, Takako Sakamoto, Shigeki Shibahara: "The Great East-Japan Earthquake and Devastating Tsunami: An Update and Lessons from the Past Great Earthquakes in Japan since 1923", The Tohoku Journal of Experimental Medicine, 229, 4, 2013, pp. 287-299, DOI:10.1620/tjem.229.287, online published on 13 April 2013, here: p. 289, Fig. 1 "Distribution of the epicenters of the three Great Earthquakes."