00:00nuclear tests are often carried out underground there are many reasons for that not the least of
00:08which is to prevent accidental spread of radioactive material however they also do
00:13it because the country testing them likely wants to remain secretive about their capabilities but
00:18that might not be possible for long experts have now figured out a way to track underground tests
00:23and differentiate a nuclear bomb going off underground from other common and equally
00:27powerful geological events namely earthquakes researchers from the australian national
00:32university and the los alamos national laboratory in the us have developed what they call a statistical
00:38model it lets them look at data that indicates geological displacement providing another metric
00:43for figuring out whether a bomb went off or whether the earth's crust made movement on its own and they
00:48say their new method can differentiate the two with 99 accuracy previous measures have looked at seismic
00:53source location for example determining whether the source of a large possible bomb related tremor
00:58was close to a fault line they are also able to tell at what depth seismic activity was created
01:03meaning if the seismic movement occurred at a depth greater than a mile and a half
01:07it's more likely natural still these are only guesses but their new method which is still under wraps
01:12is nearly one hundred percent accurate
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