This map shows, at a scale of 1:7,700,000, an overview of the occurrence of hazards and potential risks related to the geological and tectonic characteristics of the region, and to a lesser extent, to the impact of human activity. In order to facilitate the representation and readability of all the data compiled, events have been grouped into two categories: those of endogenous origin, such as earthquakes, including tsunamis, and volcanic eruptions (sheet 1 of the map) and those of exogenous origin (sheet 2) such as landslides, coastal erosion/sedimentation, karst collapse, soil subsidence, etc. The map covers ten countries: Cambodia, China, Japan, Indonesia, Korea, Malaysia, Myanmar, Philippines, Thailand and Vietnam.
The geostructural and tectonic background of the continental and oceanic zones, taken from the Geological Map of South and East Asia 1:5,000,000 (CCMG-UNESCO, 1990), takes into account the main elements of geology and plate tectonics as described in the legend (sheet 3). The explanatory notes include, in addition to an overview of the geology and plate tectonics of the region, country-specific comments on the various hazards as described, with figures and tables to supplement the data on the maps.
This work is the result of the international cooperation programme conducted by the Geological Survey of Japan, within the framework of the East Asia Natural Hazards Mapping Project (EANHMP), under the aegis of the International Coordinating Committee for the Coastal and Marine Geoscience Programme (CCOP) and the CCMG. The objective of the map is to raise awareness among regional and national development policy makers and decision makers, as well as the general public, of natural hazards and their consequences on the socio-economic development of the countries in the region. This work also responds to the objectives of the United Nations International Decade for Disaster Reduction (UN-IDDR) programme.
Overall coordination by Hirokasu Kato (Geological Survey of Japan, AIST) with the collaboration of experts from : Cambodia, China, Japan, Indonesia, Korea, Malaysia, Philippines, Thailand and Vietnam, as part of the East Asia Natural Hazards Mapping Project (EANHMP).