1. School of Earth and Space Sciences, Peking University, Beijing 100871, China;
2. Technology Innovation Center of Geological Information, MNR, Beijing 100037, China;
3. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China;
4. Department of Laboratory and Equipment Management, Peking University, Beijing 100871, China;
5. National Experimental Teaching Demonstration Center of Geoscience, Peking University, Beijing 100871, China;
6. National Virtual Simulation Experiment Teaching Center of Earth Science, Peking University, Beijing 100871, China