Abstract
We have developed a management system on sharing for integrated geophysical and geological information databases to support researches on earthquake disaster prevention. The database consists of borehole information, geological data, geophysical data, and surface soil structures. Our target is to use the database on computer network. People can access the data sets on the underground database by using web browser like Internet Explorer.The management database system is based on the concept of establishing a portal site for individual agency to be responsible for its own data.