Affiliation: | 1 . Nanjing Center, China Geological Survey, Nanjing 210016, China; 2. Institute of Urban Planning and design, Nanjing University, Nanjing 210008, China; 3. Zhengde Polytechnic College, Department of Electronic Engineering, Nanjing, Jiangsu 11106, China; 4. Development and Research Center, China Geological Survey, Beijing 100037, China; 5. Institute of Land Resources and High Techniques, China University of Geosiences, Beijing 100083, China |