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.