jgg     2008 28 (4):  1-6    ISSN: 0412-1961  CN: 21-1139/TG CHINESE MODERN GEODETIC DATUM SUITABLE FOR DYNAMIC EARTH AND INFORMATION ERA Chen Junyong State Bureau of Surveying & Mapping, Beijing 100830 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null