Lamont-Doherty Seismologists Show Latest Korean Blast Larger Than 2006 Nuclear Test

Wednesday, May 27, 2009 - 15:21 in Earth & Climate

(PhysOrg.com) -- Columbia seismologists who have intensively studied North Korea`s nuclear testing efforts say Monday`s blast was certainly a nuclear bomb, roughly five times larger than the country`s first test in 2006. The scientists, at Columbia University`s Lamont-Doherty Earth Observatory, say signals picked up by seismic stations, including one in China, showed clear characteristics of a shallow underground nuclear explosion with a force of probably several kilotons.

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