Earth Observatory Blog

Submitted on 11 May 2018 by:

On 3 September 2017, the Democratic People’s Republic of Korea (North Korea) conducted its sixth underground nuclear test at the Punggye-ri test site. In collaboration with scientists from Germany, USA, and China, my colleagues from the Earth Observatory of Singapore (EOS) and I published our findings in Science on 11 May 2018, revealing the complex physical processes associated with the nuclear test.

We found that the top of the mountain experienced a rise, collapse, and compaction at different time scales after the explosion. The explosive yield from the nuclear detonation with seismic and geodetic modeling was between 120-304 kilotons of TNT, which is more than 10 times the power...