1. Earthquake Administration, Pyongyang, Democratic People’s Republic of Korea.
2. Department of Earth and Planetary Sciences, Birkbeck College, University of London, London WC1E 7HX, UK.
3. Department of Geography, University of Cambridge, Cambridge CB2 3EN, UK.
4. Environmental Education Media Project, Beijing 100025, China.
5. U.S. Geological Survey, Menlo Park, CA 94025, USA.
6. Pyongyang International Information Centre of New Technology and Economy, Pyongyang, Democratic People’s Republic of Korea.