[theold]

https://www.youtube.com/watch?v=M90vLJbAmYk

[theold]

https://www.youtube.com/watch?v=T1kmsMBEY_I

[Tee tiong huat]

Angela Carrillo-Ponce of GFZ German Research Centre for Geoscience and her colleagues identified two distinct signals in the seismic data from the event: one high-energy signal caused by the massive rockslide that generated the tsunami, and one very long-period (VLP) signal that lasted over a week.Their analysis of the VLP signal—which was detected as far as 5000 kilometers (3100 miles) away—suggests that the landslide and resulting tsunami created a seiche, or a standing wave that oscillates in a body of water. In this case, the seiche was churning for days between the shores of Dickson Fjord.

Greenland can be observed worldwide and for over a week is exciting, and as seismologists this signal was what mostly caught our attention,” said Carrillo-Ponce.“ The analysis of the seismic signal can give us some answers regarding the processes involved and may even lead to improved monitoring of similar events in the future. If we had not studied this event seismically, then we would not have known about the seiche produced in the fjord system,” she added.

Implications for Climate Change and Future Monitoring
Dindings will help researchers as they study the impacts of landslides in Greenland and similar regions around the world where global warming and the loss of permafrost are making rocky slopes and glaciers increasingly unstable.
https://scitechdaily.com/650-foot-high-m...worldwide/