日本語

 

h1 title img:Geological Survey of Japan

Understanding and living with the Earth

Geological information is essential for a country like Japan, located at a tectonically active area, to ensure a safe and secure society. The Geological Survey of Japan gathers, compiles, and provides geological information and promotes its wider use. We also develop technologies to overcome various difficulties related to global environment protection, exploration of minerals and energy resources, and natural disaster mitigation, and coordinate international cooperation as a national representative.

Figure

New Research Results

Behavior of Fluid in Plate Subducting Directly Below the Japan Islands Related to the Occurrence of Slow Earthquakes

Many slow earthquakes occurred in the Nankai Trough. AIST calculated stress orientations within the Philippine Sea plate, investigated directions of fluid migration, and clarified that slow earthquakes occur as a result of fluid accumulating in the mantle below the Eurasian plate.

Figure of new research results Geological Survey of Japan

Schematic figure showing the orientation of fluid migration (left) and the stress orientations during the earthquakes and the orientation of fluid flow in the rock (right).

“Groundwater Maps” That Can Be Understood at a Glance Published on Website

Water environment maps of two new areas and the previously published water environment maps of four areas have been published on the website of AIST. In addition, the results of wide area groundwater flow survey have also been published as the Groundwater Database for Japan.

Figure

Concept of newly published “groundwater maps” (water environment maps)


Research Unit

▲ ページトップへ