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Greenland's Mega Tsunamis: First Direct Observation of the Trapped Waves that Shook the World
- In September 2023, two massive landslides triggered megatsunamis up to 200 meters high in a remote East Greenland fjord, producing unusual seismic signals lasting nine days.
- These events were triggered by climate change-induced reduction in glacier mass inside the valley, which led to slope destabilization and subsequent rock-ice avalanches.
- NASA's 2022-launched SWOT satellite directly observed standing waves up to two meters high reverberating across the fjord, confirming the seismic signals resulted from trapped waves known as seiches.
- Lead author Thomas Monahan highlighted that climate change is driving unprecedented extreme events, while co-author Thomas Adcock emphasized that this research showcases how advanced satellite technology can illuminate previously unexplained phenomena.
- The study demonstrates that advancing satellite observations and combining machine learning with ocean physics knowledge will enhance understanding of oceanic extremes in remote areas like the Arctic.
28 Articles
28 Articles
Climate Change Set Off Mysterious 'Trapped Wave' That Shook The Planet For 9 Days — Here’s The Proof
In September 2023, something unprecedented happened: a mysterious seismic signal echoed around the globe for nine straight days. Seismometers from Greenland to Antarctica detected a repeating vibration every 92 seconds, puzzling scientists worldwide. The post Climate Change Set Off Mysterious ‘Trapped Wave’ That Shook The Planet For 9 Days — Here’s The Proof appeared first on Study Finds.
200m Wave That Shook the Earth
In September 2023, seismometers across the world picked up something oddly strange: tremors that lasted for 9 days. And at that time no one could pinpoint the cause, there is no earthquake there’s no explosion just the persistent yet mysterious shaking. Thanks to the high-resolution satellite data and deep sea mapping, scientists have uncovered the ancient scars over the forgotten megatsunami… Source
In September 2023, seismographs from all over the world, from the Arctic to Antarctica, captured a mysterious signal that repeated every 90 seconds and lasted nine days.One month later, on 11 October, another identical signal reappeared, this time lasting a week.The strange event recorded on 16 September was studied by an international and multidisciplinary team led by geophysicists from Denmark and Greenland (GEUS) and based on data and images …
After almost two years of uncertainty, a team of researchers has managed to decipher the enigmatic source of a series of seismic waves that traveled the world in 2023.
Observations of the seiche that shook the world
On September 16th, 2023, an anomalous 10.88 mHz seismic signal was observed globally, persisting for 9 days. One month later an identical signal appeared, lasting for another week. Several studies have theorized that these signals were produced by seiches which formed after two landslide-generated mega-tsunamis in an East Greenland fjord. This theory is supported by seismic inversions, and analytical and numerical modeling, but no direct observa…
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