The paradigm of Geographic Information Systems is shifting toward the development of National Spatial Data Infrastructure (NSDI) because of the national value of spatial data. The Korean Government started the National Geographic Information System project in 1995 and began to develop NSDI in 2008. Because of the importance of underground spatial data, as well as the high cost and difficulty of obtaining such data, it is important to standardize underground geospatial data. It is expected that underground spatial data will be included in the NSDI, given the likely future expansion of NSDI data sets. Such underground information can be divided into data related to construction and data related to resource development. Standardization has been separately attempted in both of these fields, but insufficient studies exist on standardization across the fields. In the present study, we propose a scheme for a national standard underground spatial information database. As an example of the application of a standard database, we developed several application systems, including an information system that operates in the Web environment and a system that operates in the mobile environment. Because infrastructure for mobile communications in South Korea is rapidly expanding, there exist high expectations regarding the usability of mobile systems. Therefore, we developed some creative functions to assist with fieldwork in a mobile system, including mobile phones implementing augmented reality. The proposed system is expected to assist with the integrated management of underground geospatial information in the fields of construction and resource development at the national level.

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