'I have never seen such a large displacement caused by human activity'.
suggested that the mighty explosion collapsed a tunnel shortly after the test, killing hundreds of workers inside the mountain.
Researchers involved in the most recent analysis said the study used techniques normally involved in making 3D terrain maps. However, they hope making the technique more popular could help geophysicists collect data to supplement traditional seismic models and monitor future nuclear tests around the world."Nuclear tests are not common these days," said Matt Wei, a geophysicist at the University of Rhode Island in Narragansett.
In total, the international team of geophysicists estimated the bomb's power was equivalent to roughly 190 kilotonnes of TNT. For context, that's 13 times more powerful than the bomb that was , Japan during WWII. This recent analysis actually comes in higher than the bomb's initial power estimates. “We have never seen such large displacement caused by human activity via SAR imagery,” said Douglas Dreger, a scientist at the Department of Earth and Planetary Science, University of California-Berkeley and a co-author of the study. “But the vertical displacement is much smaller comparing to the horizontal displacement.
"The radar information really seems to help create a more accurate picture of what happened at the test site,"
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