Earthquake Disaster Prevention Information System


	*－Ground motion estimation, liquefaction prediction and earthquake scenario development－*

The system displays earthquake map data from geographical information system (GIS), intensity of ground shaking due to an earthquake (maximum acceleration, JMA intensity, etc.) and damage of facilities. Intelligible seismic risk information can be visually provided to develop the countermeasures.

*) JMA means Japan Meteorologocal Agency.

Features

The system can:

display the user’s facilities and earthquake information (seismicities and active faults, etc. ) on the same map.

estimate the ground motion and facility damage before and after an earthquake.

improve estimation with the observation records.

link to site information and earthquake observation information of JMA, prefectures and ministries.

can easily customized functions.

Distribution of Surface Geology
- South Kanto -

Basic Functions

1.Display of the Earthquake Information
It can display earthquake catalogue and active fault information and edit the source fault models.
2.Peak Ground Acceleration
The peak ground acceleration (PGA) can be estimated considering the amplification effects of surface soil after estimating the maximum acceleration at bedrock by attenuation relationship.
3.Response Spectrum
The acceleration response spectrum of bedrock by attenuation relationship and that of ground surface can be estimated considering the amplification effects of surface soil.

4.Distribution of JMA intensity
The JMA intensity can be calculated based on the acceleration response spectrum.
5.Liquefaction Potential
The liquefaction potential can be estimated by comparing the dynamic shear strength with the stress evaluated from SI value and PGA.
6.Structural Damage
The damage of structures can be estimated based on the PGA and/or JMA intensity.

7. Ground Motion from Wide Area to a Specific Site
The earthquake ground motion can be varied for a wide area or for a specific site in detail reflecting the type and accuracy of site information.

＜Estimated JMA intensity and facility damage
in scenario Kanto earthquake＞
＜Schema of propagation of seismic wave＞

Extended Functions


1.Evacuation and Rescue Management It can display the evacuation area and the rescue materials such as foods, water and fire distinguisher upon the map.	2.Route Search It can searche the optimal route for evacuation and transportation of rescue materials considering fire area and road damage, etc.	3.Connection with Sensors It collects the observation data automatically in real time, and provides feedback to damage estimation.

Map Data

The following map data published by Geographical Survey Institute are used.

Digital map 10,000, Digital map25,000 (FD Ver.)
Digital map 50m, 250m mesh (FD Ver.)
Digital map 2500
JMC map (JMC means Japan Map Center )
Digital map25,000 (CD-ROM Ver.)
Digital map200,000 (CD-ROM Ver.)
Digital map250m mesh (elevation, CD-ROM Ver.)

Top

Index

1.Display of the Earthquake Information It can display earthquake catalogue and active fault information and edit the source fault models.	2.Peak Ground Acceleration The peak ground acceleration (PGA) can be estimated considering the amplification effects of surface soil after estimating the maximum acceleration at bedrock by attenuation relationship.	3.Response Spectrum The acceleration response spectrum of bedrock by attenuation relationship and that of ground surface can be estimated considering the amplification effects of surface soil.

4.Distribution of JMA intensity The JMA intensity can be calculated based on the acceleration response spectrum.	5.Liquefaction Potential The liquefaction potential can be estimated by comparing the dynamic shear strength with the stress evaluated from SI value and PGA.	6.Structural Damage The damage of structures can be estimated based on the PGA and/or JMA intensity.