2017 North Korean nuclear test

2017 North Korean nuclear test
M 6.3 Explosion - 22km ENE of Sungjibaegam, North Korea.jpg
Graphic from the United States Geological Survey showing the location of seismic activity at the time of the test
Information
Country   North Korea
Test site 41°20′35″N 129°02′10″E / 41°20′35″N 129°02′10″E / 41.343; 129.036 [1]
Punggye-ri Nuclear Test Site, Kilju County
Period 12:00:01, 3 September 2017 (2017-09-03T12:00:01) UTC+08:30 (03:30:01 UTC) [1]
Number of tests 1
Max. yield
Test chronology

The Democratic People's Republic of Korea conducted its sixth nuclear test on 3 September 2017, stating it was its first test of a thermonuclear weapon (hydrogen bomb). [6]

The United States Geological Survey reported an earthquake of 6.3-magnitude not far from North Korea's Punggye-ri nuclear test site. [7] South Korean authorities said the earthquake seemed to be artificial, consistent with a nuclear test. [8] The USGS, as well as China Earthquake Networks Center, reported that the initial event was followed by a second, smaller, earthquake at the site, several minutes later, which was characterized as a collapse of the cavity. [9] [10]

Nuclear device

Order to conduct the test, signed by Kim Jong-un on 3 September 2017

The North Korean government said it has detonated a hydrogen bomb that could be loaded onto an intercontinental ballistic missile (ICBM). [11] The announcement stated the warhead had a variable yield "the explosive power of which is adjustable from tens kiloton to hundreds kiloton ... which can be detonated even at high altitudes for super-powerful EMP attack". [12] A later technical announcement called the device a "two-stage thermo-nuclear weapon" and stated experimental measurements were fully compatible with the design specification, and there had been no leakage of radioactive materials from the underground nuclear test. [13] [6]

Photographs of North Korean leader Kim Jong-un inspecting a device resembling a thermonuclear weapon warhead were released a few hours before the test. [14]

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