Site Amplification Factor (Site Amp.)
-Engineering Geomorphologic Classification-
This map offers the geomorphologic classification map in a standard area mesh in whole of Japan,
approximately 1km and 250m square. Classifying the geomorphologic attribute, as the higher spatial
resolution about 250m square, has improved in the 2009 (and later) version map.
-Average shear-wave velocity in the upper 30m depth-
This map shows the 30m depth average S-wave velocity calculated from the engineering geomorphologic classification,
which has improved from the 2009 version.
-Site amplification factor-
This map shows amplification factor map obtained from the 30m average S-wave velocity(AVS30), which has improved
from the 2009 version. The amplification factor means amplified ratio calculated from the engineering bedrock
(Vs=400m/s) up to ground surface.
Maps of Site Amplification Factor are displayed by selecting the tab "Site Amp.".
Example of the map of Site Amplification Factor: Site Amplification Factor (Vs=400m/s-surface)
Selecting a type of map
You can select a type of map from the combobox on the toolbar.
If you select "Engineering Geomorphologic Classification", click 
on right-bottom and detailed legend window is shown.
Displaying the summary
Click
and the window which shows the summary of Site Amplification Factor map appears.