The phenomenon was identified as a seiche, a standing wave that persisted unusually long due to the fjord's unique shape.

The investigation involved a collaborative effort of over 70 scientists from 15 countries, utilizing various data sources including seismometry and satellite imagery.

Researchers highlighted the need for further studies on this phenomenon and its implications for climate change, as it may not be an isolated incident.

Svennevig also stressed the importance of developing early warning systems to mitigate risks in extreme environments like this.

A massive landslide in Greenland, attributed to climate change, triggered a tsunami in a fjord and an earthquake that lasted for nine days.

The tsunami waves, which reached heights of up to 13 feet, were trapped in the fjord, preventing their energy from dissipating.

Initially, scientists detected a mysterious seismic signal, referred to as a 'USO' or unidentified seismic object, before linking it to the landslide.

Despite the tsunami causing damage to infrastructure and archaeological sites, there were no reported fatalities, largely due to the area being deserted at the time.

Lead researcher Kristian Svennevig emphasized the unprecedented nature of the event, stating, 'No one had ever seen anything like this.'

The findings may prompt researchers to revisit seismic records for similar events, enhancing the understanding of seiches and their conditions.

Antoine Lucas explained that the fjord's closed topography allowed tsunami waves to ricochet, generating seismic waves detected globally.

These findings were detailed in a recent report published in the scientific journal Science, emphasizing the need for advanced models to simulate long-duration tsunamis.