Historical documents in Korea and China report abnormal waves in the sea and rivers close to the date of the 1707 Hoei earthquake, which occurred in the Nankai Trough, off southwestern Japan. Amid threats of more eruptions, the Indonesian government has a difficult job ahead after the Anak Krakatau volcano erupted late on Saturday December 22. The behavior of the 1946 tsunami run-up on land was investigated and compared with the two historical tsunamis of Hoei (Oct. 28, 1707) and Ansei (Dec. 24, 1854). Traces of the inundated level on many houses in the two towns caused by the 1946 Nankaido tsunami (Dec. 21, 1946) were surveyed, using the automatic level from Oct. 18 to 23, 1982. The 1707 Hoei earthquake with an estimated magnitude of 8.4 was the second largest earthquake to have ever hit Japan besides the 2011 Tohoku earthquake. 6. The earthquake, and the resulting destructive tsunami, caused more than 5,000 casualties. The 1707 Hōei earthquake, which occurred at 14:00 local time on October 28, 1707, was the largest earthquake in Japanese history until the 2011 Tōhoku earthquake surpassed it.It caused moderate to severe damage throughout southwestern Honshu, Shikoku and southeastern Kyūshū. Nankaido, Japan-1707. The earthquake that caused the Ise Bay tsunami is best estimated as being of magnitude 8.2. Also, the amount of damage and height of the water from tsunami showed the strength of the earthquake. Ise Bay, Japan – 18 January 1586. 1 a). In the Kawachi Plain area, the earthquake was around 6 - 7 on the JMA scale . Inundation heights of the 1854 Ansei tsunami along the Wakayama coast, the west side of the Kii Peninsula, are 4.8 meters on the average and are 1.2 times as large as those of the 1946 Nankaido tsunami. At Cape Muroto, Kōchi, a cliff was raised up about 2.3 m in 1707, but just 1.5 m in 1854. The tsunami destroyed a total of 3,137 homes, killing nearly 12,000 people in total. The waves rose to a height of 6m, causing damage to a number of towns. This indicates that the tsunami caused by the Hoei earthquake might have reached Korea and China, which suggests a potential hazard in Korea from large earthquakes in the Nankai Trough. It caused a consequent tsunami that led to the sea waves as high as 25 m to hammer into the Pacific coasts of Kyushu, Shikoku, and Honshin. The human and financial cost of the Indian Ocean tsunami – interactive On 26 December 2004, an undersea earthquake off the coast of Indonesia sent … The 11 March 2011 Tohoku earthquake (M w 9.0) was the largest instrumentally recorded earthquake in Japan and caused devastating tsunami damage including ~ 18,500 casualties.The ground shaking was felt throughout the Japanese Islands with the maximum seismic intensity of 7 on the Japan Meteorological Agency (JMA) scale, or 11–12 on the Modified Mercalli scale (Fig. On December 20, 1946, while Japan was recovering from all the devastation of World War II, it was hit once again with the Nankaido earthquake, a very powerful one of magnitude 8.1, along this line. Tokaido-Nankaido, Japan Tsunami – A earthquake of 8.4 magnitude which caused 25 meter waves to engulf the coastal regions of Kyushyu, Shikoku, Honshin and Osaka in 1707. The estimated heights of the 1707 Hoei tsunami are 5 meters with the localized run-up maximum of 6 to 7 meters. The waves of the tsunami extended several kilometers inland and as many as a dozen occurred over a one hour period.