Experts Say

North Korea’s Sixth Nuclear Test: A First Look

38 North
September 5, 2017
By Frank V. Pabian, Joseph S. Bermudez Jr., and Jack Liu.

Commercial satellite imagery from Planet, obtained the day after North Korea conducted its largest test to date (currently estimated in the 100+ kiloton range), appears to show numerous landslides throughout the Punggye-ri Nuclear Test Site and beyond. The area of these surface disturbances, which include numerous areas of pre-existing gravel and scree fields that have apparently been lofted in place from the tremors,[1] is centered about Mt. Mantap (elevation. 2205 meters). These disturbances are more numerous and widespread than what we have seen from any of the five tests North Korea previously conducted.
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