Megatsunamis have different features from ordinary tsunamis. Ordinary tsunamis are caused by underwater tectonic activity (movement of the earth's plates) and therefore occur along plate boundaries and as a result of earthquakes and the subsequent rise or fall in the sea floor that displaces a volume of water.

2024年9月13日 · It started with a melting glacier that set off a huge landslide, which triggered a 650-foot high mega-tsunami in Greenland last September. Then came something inexplicable: a mysterious vibration...

2024年9月12日 · Now, scientists have tracked these mysterious signals to their source—a colossal landslide in a remote Greenland fjord that sparked tsunami waves up to 200 meters tall, the team reports today in Science. Like sloshing water in a bathtub, the tsunami resonated within the narrow valley, beating against the channel walls and creating the ...

2024年8月13日 · On September 16, 2023, a massive landslide in Greenland triggered a megatsunami, creating a standing wave that oscillated in Dickson Fjord for over a week, observed worldwide through seismic stations.

2024年9月10日 · In September 2023, a massive tsunami in remote eastern Greenland triggered seismic waves that captured the attention of researchers worldwide. The event created a week-long oscillating wave in Dickson Fjord, according to a new report in The Seismic Record.

2024年9月4日 · There's evidence that shows a 65-ft (20-m) tsunami, triggered by the Storegga slide, may have wiped out a significant portion of the coastal population of what is now Britain, about 700 miles ...

2024年9月12日 · A new study published today in Science provides the stunning solution: In an East Greenland fjord, a mountaintop collapsed into the sea and triggered a mega-tsunami about 200 meters (650 feet) tall. The giant wave rocked back and forth inside the narrow fjord for nine days, generating the seismic waves that reverberated through Earth’s crust ...

2024年6月19日 · What is a super tsunami? A super tsunami is an exceptionally powerful and destructive tsunami. Unlike regular tsunamis, which have relatively small wave amplitudes, super tsunamis have initial wave amplitudes that are much larger. These mega-tsunamis can reach heights of several tens, hundreds, or even thousands of meters.

A tsunami is a catastrophic ocean wave, usually caused by a submarine earthquake, an underwater or coastal landslide, or a volcanic eruption. On the open spaces of the ocean, a fast-moving tsunami may only be a few feet high, with 100 miles separating wave crest. Tsunami waves can move up to 500 mph and reach hundreds of feet in height.

2024年3月7日 · A mega-tsunami represents an extraordinary manifestation of nature’s power, characterized by immense waves surpassing the scale of conventional tsunamis. One notable instance is the devastating Indian Ocean tsunami of 2004, renowned for its unprecedented force and widespread impact.