The Integration Of Chinese Regional Gravity Information System

According to China's regional gravity work, supported by the national geologicalsurvey projects <regional gravity data collection and organize> and <regional gravitydatabase improve the pre-promotion>, this paper studies series technology includingregional gravity database building, data collation and result expression. It built thenational gravity database and elevation database, reworked terrain correction andthematic graphics module, integrated regional gravity data collation, data processing,drawing and data processing module based on the GIS platform and formed a series ofachievements of regional gravity data infomation system.Established China's first national GIS-based platform for national regional gravitydatabase, built the regional gravity database module, worked the databasemanagement module, and managed all the country's regional gravity data. It is thefirst regional gravity database covering the whole country. The Quantity and quality isthe first of the gravity database in the field of geological prospecting in China.Creatively designed terrain correction elevation database module, completed thebuilding a database of 1*1Km node elevation data within the national territory andoutside the 30Km.The preparation of regional gravity terrain correction module realized, for thefirst time, one-touch finishing of the regional gravity measurements from the field theoriginal survey record to the outcome data. The tool changed the manual process in50-2000m region terrain correction, in the past, greatly reduced the duty cycle of theregional gravity survey (about a year shorter working hours in one regional gravitysurvey ), reduced the labor intensity, improve the quality of work, and promotedregional gravity survey of the technological progress, improved the efficiency andaccuracy of terrain correction.The integration of regional gravity data processing and graphic expression,greatly improves data processing efficiency and the quality of map compilation. Itformed the most complete and advanced GIS-based database system including gravitydata processing and graphics production, had independent intellectual property rights,From the gravity field quality control and data processing, inversion of theinterpretation and map compilation and other multi-function integration.The database carried out a national large-scale application and made tremendoussocial benefits. Achievements are widely used in all regional gravity survey projects,field data collection, data processing, handling all aspects of the map compilation.