Earthquake Scientists Finally Explain 9-Day Global 'Unidentified Seismic Object' (msn.com)
- Reference: 0174992931
- News link: https://science.slashdot.org/story/24/09/14/0156235/earthquake-scientists-finally-explain-9-day-global-unidentified-seismic-object
- Source link: https://www.msn.com/en-us/weather/topstories/a-rumble-echoed-around-the-world-for-nine-days-here-s-what-caused-it/ar-AA1qtjKn
> Some initially thought the seismic instruments recording the signal were broken, but that was quickly nixed. Maybe it was a new volcano emerging before their eyes, others said. One jokingly ruled out an alien party. As theories were checked off, the scientists dubbed the signal an "Unidentified Seismic Object," or USO... Nine days later, the vibrations greatly dissipated. But the mystery of the USO lasted much longer.
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> A year later, the puzzle has been solved, according to a study published in the journal Science on Thursday. It took about 70 people from 15 different countries and more than 8,000 exchanged messages (long enough for a 900-page detective novel) to crack the case. The short answer: A mega-tsunami created waves that sloshed back and forth in a fjord in Greenland, creating vibrations that traveled around the world.
Extra heat from global warming "thinned a glacier in eastern Greenland over time so much that it could no longer support the mountain rock above it," according to the article. A mile-long avalanche "plunged into the Dickson Fjord, triggering a 650-foot-high tsunami — one of the highest seen in recent history." Like the rhythmic waves in a bathtub, "the mega-tsunami wave traveled back and forth in the inlet," which "radiated seismic waves globally, shaking the planet for nine days before it petered out."
In August a German research team had studied the megatsunami, concluding that [2]climate change was speeding the melt of Greenland's glaciers and increasing the chance of landslide-driven megatsunamis. The article reports that an author of that study said when comparing it to this one, "The methods chosen by the teams are different, but the results agree well."
[1] https://www.msn.com/en-us/weather/topstories/a-rumble-echoed-around-the-world-for-nine-days-here-s-what-caused-it/ar-AA1qtjKn
[2] https://news.slashdot.org/story/24/08/23/2337203/megatsunami-risk-on-the-rise-as-glacial-melt-drives-landslides
Was it Russia? (Score:2)
It's always Russia.
Pics or it didn't happen! (Score:2)
Nuugaatsiaq and lllorsuit in Greenland had to be abandoned because of the threat of tsunamis similar to the one in the Dickson fjord.
8200 years ago we lost Doggerland to the Storegga underwater landslide... though that's only a popular theory among researchers and not considered a 100% certainty.
It's kind of cool that we got to 'see' a megatsunami but simultaneously sad that the only record of it is seismic and it wasn't captured on video. A 200m high wall of water rushing down a fjord would have to be an
650 tf tsunami and no one videod it (Score:2)
The screams of dispair from tiktokers can be heard even now.
Seriously - anyone who thinks man knows everything that goes on on this planet needs to remember this event. With 7 billion people and god knows how many weather and spy satellites and the largest tsunami in recent history went unnoticed because it was in greedland.
Re: (Score:2)
Can you imagine if somebody had a live feed there? You'd spend a year or so replaying the clip and making money off the talk show circuit discussing how you happened to get so lucky and how awesome the captured video was.
But if you happened to be a reasonably attractive woman doing yoga in a bikini in the foreground and posted the results on social media... you'd have followers for life, sponsors lined up for years, and be flush with cash.
It's Surprising No One in Greenland Noticed (Score:2)
Greenland has a population of 56,000 and it hosts a number of seismic research activities. One would expect someone there to notice the seismic activity--instead you have this detective work from thousands of miles away.
language (Score:2)
"When it continued for a third day, scientists worldwide began assembling.."
They don't use a high level language like C# or PHP ?
A USO? (Score:2)
Quick, get the US government involved..