国家测震台网中心全国地图数据整合与更新

Integration and update of China's map data at the National Seismic Network Center

介绍了国家测震台网中心在"十五"测震台网建成以来首次全面的全国地图数据整合与更新工作。这项工作采用国家测绘局提供的2008年全球版1∶100万基础地理数据作为主要数据源,并以2002年全国版1∶100万基础地理数据为补充。对上述数据进行分析、格式转换、拼接和拓扑一致性处理,再对行政区域界线、居民地层和大中城市县级边界信息进行补充,完成此次全国地图数据更新。所形成的全国范围内连续、要素关系一致的基础地理数据,能够满足地震监测对地图数据现势性的要求,为今后的工作奠定基础。

This paper gives a brief introduction to the first complete integration and update of China＇s nationwide map data after＂the Tenth Five-Year Plan Project＂at the China National Seismic Network Center（CNSNC）.The fundamental geographic data of the 2008 global version（1∶1million）is used as the primary data source in the integration and update,with the supplement data of the 2002 national version in the same scale.After the analysis,the above data is converted,jointed and topographically processed.The administrative boundaries,residential area are also complemented.By integrating and updating work,the continuous and coincident graphical data is obtained and the updated map data can meet the demands for seismic monitoring at the CNSNC,and lay a foundation for the further work as well.