It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
"I don't think that anyone on the earth - except the North Koreans - know at this point in time how much material was used for this explosion," said Olli Heinonen, Deputy Director of Safeguards at the International Atomic Energy Agency (IAEA).
Putting IAEA inspectors back into North Korea would be the only way to establish the facts, he said.
A U.S. official said on Friday preliminary U.S. intelligence analysis showed radioactivity in air samples collected near a suspected North Korean nuclear test site.
U.S. says N.Korea's test was nuclear
Mon Oct 16, 2006 11:53am ET
WASHINGTON (Reuters) - The U.S. government said on Monday that the test conducted by North Korea on October 9 was a nuclear explosion of less than one kiloton.
"Analysis of air samples collected on October 11, 2006, detected radioactive debris which confirms that North Korea conducted an underground nuclear explosion," the director of national intelligence said in a statement.
The statement said the explosion yield was less than a kiloton. By comparison, the nuclear bomb the United States dropped on Hiroshima, Japan, in 1945 was about 12.5 kilotons.
The announcement last week by the reclusive communist state that it had tested a nuclear bomb sharply escalated world concerns over North Korea's nuclear program.
The International Monitoring SystemThe International Monitoring System has a global reach with a total of 321 monitoring stations in 92 countries. It uses four different technologies to monitor all possible test-ing environments underground, in the oceans and in the atmosphere. ➊ The seismic network, consisting of 50 “primary” sta-tions that report all data on line and 120 “auxiliary” stations from which data can be requested, is the main tool to moni-tor underground explosions. ➋ Only 11 hydro-acoustic stations are needed to monitor the oceans as signals in the water are transmitted with very little attenuation over global distances. ➌ A network of 60 infra-sound stations is designed to monitor explosions in the atmosphere. They detect acoustic signals with frequencies far below what the human ear can detect. ➍ The fourth component of the international monitoring system is the radionuclide network consisting of 80 sta-tions to detect radioactive particles, 40 of which are also equipped to detect xenon, a radioactive noble gas. The purpose of the radionuclide stations is to monitor the unique radioactive fallout that might emerge from a nuclear explo-sion in any environment. To analyze data from the radionu-clide stations, 16 globally distributed laboratories consti-tute part of the system.Data from the monitoring stations around the world are transmitted on-line to the international data center at the PTS in Vienna. Modern communications and computer technology make it possible to bring together and analyze the large amount of data created by monitoring stations. At the data center, information from individual stations is analyzed together to detect and locate the source of the sig-nal. This is a most complex process involving automatic sig-nal processing and analysis by well-trained experts. States are provided with the results of this analysis as well as the raw data for their assessment
VIENNA (Reuters) - The United Nations nuclear watchdog said on Monday it did not know whether a North Korean underground explosion had tested a nuclear device.
Of course, no system is ever 100 percent reliable
Many of our sites are also a part of the International Monitoring System. This system comprises a network of 321 monitoring stations and 16 radionuclide laboratories in 91 nations that monitor the earth for evidence of nuclear explosions in all environments. AFTAC's USNDC is our government's contribution to the International Data Centre operated by the Comprehensive Test Ban Treaty Organization in Vienna, Austria. This organization is the verification regime for the treaty of the same name that seeks to eventually ban all nuclear tests.