World Tsunami Awareness Day Event (5 Nov. 2020)

Special Event: World Tsunami Awareness Day


The 5th of November was designated as World Tsunami Awareness Day (WTAD) by the 70th United Nations General Assembly in December 22, 2015. It was proposed by 142 countries following the Sendai Framework for Disaster Risk Reduction adopted at the Third UN World Conference on Disaster Risk Reduction (WCDRR) held in March 2015 in Sendai and the 2030 Agenda for Sustainable Development. The document prepared by the Ministry of Foreign Affairs, the Government of Japan in November, 2015 ( for UN General Assembly stated as follows.

Tsunami are generated by sudden submarine topographic movement, such as:

 Submarine volcanic eruptions;
 Landslides near a coastline or at the bottom of the ocean; and
 Submarine crustal deformations accompanying earthquakes.

WLF5 organize a special event for World Tsunami Awareness Day on 5 November 2020 during WLF5 as a part of Theme 5 Landslide Research Frontier.

The special event includes sessions for tsunamis induced by coastal and submarine landslides and also multi-hazard risk analysis and modelling of various types of landslide disasters linked with other hazards. Japan suffered a catastrophic earthquake- and landslide- and tsunami disaster which killed more than 15,000 persons in 1792 in the Shimabara Peninsula, Kumamoto Prefecture and Amakusa islands.

Many experts on landslides will attend the Fifth World Landslide Forum.Selected experts are planned to present the recent advancements in landslide early warning and hazard mapping for participants and also one day participants including citizens.

Post-Forum Field Trip on 7- 9 November 2020 includes the visit to 1792 Unzen Shimabara landslide and Tsunami disaster area in Kyusyu island.  This mega-landslide was triggered by a nearby earthquake in the Mayuyama of the Unzen Volcano. The triggered landslide moved over the town of Shimabara and entered into Ariake Sea and caused Tsunami wave. More than 20 m high Tsunami attached the Kumamoto Prefecture and Amakusa islands. The total death by the landslide and the tsunamis was 15,153 persons. It was the largest landslide disaster in and the larges volcanic disaster in Japan. (Landslides 2016. Vol. 13-6, pp:1405–1419.