Using advanced technology, scientists have compiled detailed radar data to show the devastating effects of North Korea's largest underground nuclear test.
The test took place under the mountain peak. Mantap in the northern part of the country on September 3, 2017, causing the collapse of the mountain. According to the international team of experts, the explosion was so severe that it shook the environment like a magnitude 5.2 earthquake.
The subterranean nuclear blast pushed the surface of the mountain down. Mantap outward by as much as 11 feet and left the mountain about 20 inches shorter, they said. Experts have based their analysis on regional and global seismic recordings as well as before and after radar measurements of the mountain surface using Germany's TerraSAR-X and Japan's ALOS-2 radar imaging satellites.
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The analysis was published this week before publication in the journal Science.
Scientists from the University of California at Berkeley, the German Research Center for Geosciences in Potsdam, the Leibniz University Hannover, the Nanyang Technological University in Singapore and the Chinese Academy of Sciences in Beijing participated in the research. The project was also supported by the US Air Force Research Laboratory.
Using computer models, the team was able to determine the exact location of the explosion, which was just below the kilometer-high peak of the mountain. They were also able to determine the depth of the explosion, which occurred between a quarter and a third of a mile below the summit.
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Experts also noted the site of an aftershock that occurred 8.5 minutes after the nuclear explosion and about 2,300 meters south of the bomb blast. The second seismic event, they speculate, may have been caused by a collapsing tunnel or cavity left over from an earlier nuclear test.
The Mountain The Mantap explosion was the rogue's sixth nuclear test, and rumors of its impact on the "stressed" mountain made headlines worldwide.
The latest high-tech radar data provide a fascinating insight into North Korea's core nuclear program has long been the source of international concern. "This is the first time that the full three-dimensional surface shifts associated with a subterranean nuclear test have been mapped and presented to the public," lead author Teng Wang of Singapore's Earth Observatory at Nanyang Technological University said in a statement  TREASURE ICELAND: RARE METALS DISCOVERY ON REMOTE-PACIFIC ATOLL IS WONDERFUL BILLION DOLLARS
The fifth and sixth test within the Mt. Mantap had a yield between 120 and 300 kilotons, about 10 times the size of the bomb dropped by the USA on Hiroshima during the Second World War, according to the scientists involved in the study. "That makes it either a small hydrogen or fusion bomb or a large nuclear or nuclear fission," they said in a statement.
The use of satellite radar imaging, called SAR (Synthetic Aperture Radar), was an important part of the research that allowed the team to create a completely new picture of how the blast changed the mountain.
"SAR real It plays a unique role in the monitoring of explosions, as it is a direct representation of the local ground surface, in contrast to seismology, where you get to know the nature of the source that emits waves from the event at remote stations "said Douglas Dreger of the UC Berkeley Professor of Earth and Planetary Sciences and a member of the Berkeley Seismological Laboratory, in a statement. "This is the first time someone has modeled the mechanics of a subterranean explosion using satellite and seismic data."
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Mantap is part of the North Korean Punggye-ri nuclear test. There was speculation that the collapse of the mountain may have prompted North Korea's recent decision to halt nuclear and missile tests.
However, there are conflicting theories about the exact location of the sixth North Korean nuclear test. For example, a separate scientific study identified the explosion almost one kilometer northwest of the site identified in the latest research.
U.S. President Donald Trump announced in a tweet on Thursday that he will meet North Korean leader Kim Jong Un in Singapore on June 12th.
Katherine Lam and the Associated Press of Fox News contributed to this report.
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