1. 1School of Earth Science and Engineering, Sun Yat-sen University, Zhuhai, Guangdong, China
2. 2Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, Guangdong, China
3. 3School of Earth and Space Sciences, Peking University, Beijing, China
4. 4School of Geography and Planning, Sun Yat-sen University, Guangzhou, Guangdong, China
5. 5Canada Center for Mapping and Earth Observation, Natural Resources Canada, Ottawa, Canada
6. 6Faculty of Engineering, Kandahar University, Kandahar, Afghanistan
7. 7Department of Civil Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, India
8. 8Department of Civil Engineering, Inha University, Incheon, Republic of Korea