Vol.1 No.2 2008

12/85

Research paper : Creation of seamless geological map of Japan at the scale of 1:200,000 and its distribution through the web (K. Wakita et al.)−81 Synthesiology - English edition Vol.1 No.2 (2008) geoinformation will be improved and integrated at national scale. In this project, geophysical (gravity and aeromagnetic) and geochemical mapsTerm 9 are developed at 1:200,000 scale. They will be revised and published as a nationwide seamless geoscience atlas in set with seamless geological map. These maps are recognized as part of intellectual foundation of geoscience, and are expected to facilitate interoperation of information with other fields (Figure 9). 5.3 International standardization and interoperation of geoinformationNew system for “cloud computing” is necessary to mutually exchange and utilize geological map information on the web[15]. It is also required that any people and any system around the world share common understanding of definition of the terms. The Geography Markup Language (GML)Term 10 and its operational specifications WFS and WMSTerm 11 are some examples of international standards for geospatial information proposed by the Open Geospatial Consortium, Inc. (OGC), the international organization for development of international standard for geospatial interoperability[16]. To become interoperable with other geospatial information of different fields and forms, the seamless geological map must conform to these international standards (Figure 9).In order to realize interoperation among various geological information including geological maps, we joined the Commission for the Management and Application of Geoscience Information (CGI) under the International Union of Geological Sciences (IUGS) to discuss the development of GeoSciML, which is one of the international standards for geological information[17]. Similar to GML mentioned above, this is one of the XML vocabularies whose data model is described in terms of XML, and is compliant with GML for geospatial information[18]. We intend to provide interoperable geological data in the form of compatible parts, by splitting geological digital documents including digital maps into small pieces, and then embedding metadata using various GeoSciML tags (Figure 10). Applying XML vocabulary including GeoSciML requires arrangement of data based on each data model. We also aim to rebuild the 1:200,000 seamless maps into spatial relational database by applying GeoSciML (Figure 10).In utilizing geological information such as the seamless geological map, framework for secured utilization will be necessary in the future. The GEO GridTerm 12, one of AIST’s integrated issues, is an initiative that will allow this to be practicable (Figure 9). The GEO Grid project was started to study international data sharing among Asian countries as well as Japan. The seamless geological map has become one of major contents in the project, and it will enable interoperation among similar geological maps and related information in Asian countries (Figure 9). Natural resources and environment are borderless issues, and the geoinformation of surrounding countries are important for Japan to ensure stable economic development and secure society. Interoperation of geoinformation using the GEO Grid is expected to play an important role in the security of the society such as response to various disasters like earthquake and volcanic eruption in Asia.6 ConclusionWe described the innovative methods of transforming traditional analog maps to the seamless geological map and the interoperation technology that allows the information to be used interoperably on the web.Seamless geological map, which allows the public to use geological maps and information easily, can be regarded as an example of Type 2 Basic Research. The nationally harmonized 1:200,000 map was distributed over the Internet and accessed 600,000 times in 2006. The figure demonstrates wide utilization of the digital geological map. However, for broader dissemination of geological information to the Fig. 9 Future model of Seamless Geological Map Project.Global Hazard MitigationGeologyEnvironmentAsiaResourcesLocation SelectionInteroperabilityDistribution on the WebActive Fault DBSoil Pollution DBAISTSeamless Geological MapEngineering Geological Map Subsurface Geological MapGovernmentCommon DBCommon DBGML,WFS, WMSGeoSciMLStandardizationOGC, CGI/IUGSDataModelSeamlessGeologicalMap Field DataPaper MapReportsInternational StandardGeoSciML・GMLDataAISTContentsCross SectionStratigraphyMobileGeological MapSpatialRelationalDatabaseDataDataDataXMLXMLXMLXMLXMLDataModelFig. 10 Interoperable workflow based on the standardization of geoinformation.(9)−

※このページを正しく表示するにはFlashPlayer9以上が必要です