Globale Klimaveränderung

[Schneemann]

Relativ unbemerkt - auch ich hatte es nur durch Zufall gefunden - hat sich vor rund einem Jahr ein gewaltiger Bergsturz in Grönland ereignet, der wahrscheinlich eine bis zu 200 m hohe Flutwelle (Tsunami) bewirkte. Die Schockwellen liefen um den gesamten Globus.

Entire Earth vibrated for nine days after climate-triggered mega-tsunami

Landslide in Greenland caused unprecedented seismic event that shows impact of global heating, say scientists. [...]

A landslide and mega-tsunami in Greenland in September 2023, triggered by the climate crisis, caused the entire Earth to vibrate for nine days, a scientific investigation has found. [...] The collapse of a 1,200-metre-high mountain peak into the remote Dickson fjord happened on 16 September 2023 after the melting glacier below was no longer able to hold up the rock face. It triggered an initial wave 200 metres high and the subsequent sloshing of water back and forth in the twisty fjord sent seismic waves through the planet for more than a week. [...] A large number of huts were destroyed at a research station on Ella Island, 70km (45 miles) from the landslide. The site was founded by fur hunters and explorers two centuries ago and is used by scientists and the Danish military, but was empty at the time of the tsunami. [...]

Dr Stephen Hicks at University College London, one of the research team leaders, said: “When I first saw the seismic signal, I was completely baffled. Never before has such a long-lasting, globally travelling seismic wave, containing only a single frequency of oscillation, been recorded.” The signal looked completely different to multi-frequency rumbles and pings from earthquakes. It took 68 scientists from 40 institutions in 15 countries to solve the mystery by combining seismic data, field measurements, on-the-ground and satellite imagery, and high-resolution computer simulations of tsunami waves. [...]

Such events will become more common as global temperatures continue to rise. “Even more profoundly, for the first time, we can quite clearly see this event, triggered by climate change, caused a global vibration beneath all of our feet, everywhere around the world,” said Mangeney. “Those vibrations travelled from Greenland to Antarctica in less than an hour. So we’ve seen an impact from climate change impacting the entire world within just an hour.”

https://www.theguardian.com/environment/...ga-tsunami

Opfer gab es wegen der abgeschiedenen Lage in diesem Fall keine, aber das muss nicht so sein bzw. so bleiben (als Bsp. siehe hierzu ein Ereignis von 2017: https://de.wikipedia.org/wiki/Bergrutsch...Fjord_2017)

Schneemann