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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.

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New Research Results

Release of High-Precision Elevation Tiles That Can Be Used for 3D Map Creation

AIST released "Seamless Elevation Tiles" consisting of high-precision elevation data for Hyogo Prefecture etc. converted to PNG elevation tiles that are easy to use on the web. Use of the released PNG elevation tiles achieves high-speed operation by 3D websites and other Internet sites.

Figure of new research results Geological Survey of Japan

3D display of area around Sannomiya, Kobe using "Seamless Elevation Tiles"
(Geospatial Information Authority of Japan tile "photographs" are used)

Retention of High Fluid Pressure Near Plate Boundary After Earthquakes

AIST found a possibility that negligible amount of fluid near the plate boundary at a depth of about 8 km is lost even if cracks are formed in the rock after earthquakes, and that high fluid pressure is maintained and continues to build up.

Figure of new research results Geological Survey of Japan

(a) Schematic diagram of drainage from cracks formed after large earthquakes (b) Relationship between fluid pressure and conditions before and after repeated earthquakes

Research Unit

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