Main Information
LCI: JPN1611131539
The 1792 Unzen-Mayuyama megaslide in Japan (volume, 3.4 x 108 m3; maximum depth 400 m) killed 10,139 persons directly by the displaced landslide mass in the Shimabara area.
The landslide mass also entering into the Ariake Sea where it triggered a tsunami wave. This landslide-induced tsunami wave killed 4,653 people in Kumamoto Prefecture, 343 people on Amakusa Island and 18 people in other areas (Usami, 1996).
Simulations of this landslide and tsunami have already been made using LS-RAPID and LS-Tsunami in Sassa et al. (2014, 2016). Source: Sassa, K., Dang, K., Yanagisawa, H. et al. Landslides (2016). A new landslide-induced tsunami simulation model and its application to the 1792 Unzen-Mayuyama landslide-and-tsunami disaster. Landslides, First Online. doi:10.1007/s10346-016-0691-9.
Location
City / District: Shimabara
Province: Nagasaki
Country: Japan
Latitude: 32:46:13.24 N
Longitude: 130:30:0.82 E
Reporter
Reporter 1: Khang Dang
Reporter 2: Kyoji Sassa
Landslide Type
Material: Complex
Movement: Slide
Velocity (mm/sec): Extremely Rapid (5×10³ or more)
Depth (m): Very Deep (100 - 500)
Slope (degree): Moderate (20 - 30)
Volume (m³): Extremely large (10⁸ or more)
Date of Occurence
Date of Occurence: 05/21/1792
Other Information
Land use (Source Area): Forest
Land use (Run-out/deposition area): Forest, Urban area, Road, Railways
Other Activity: Active in the past
Triggering Factor: Earthquake
Death(s) & Missing: 15153
Photo of landslide
Google earth kmz file
Plan of landslide
Cross section of landslide
Reference (paper / report) (Insert link)
Testing graph
Monitoring graph
