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Storegga tsunami deposits (grey upper layer), bracketed by peat (dark brown layers), taken at Maryton on the Montrose Basin, Scotland. At, or shortly before, the time of the Second Storegga Slide, a land bridge known to archaeologists and geologists as Doggerland linked Britain, Denmark and the Netherlands across what is now the southern North Sea.
An example of this was the 17 July 1998, Papua New Guinean landslide tsunami where waves up to 15 m high impacted a 20 km section of the coast killing 2,200 people, yet at greater distances the tsunami was not a major hazard. This is due to the comparatively small source area of most landslide tsunami (relative to the area affected by large ...
The red arrow shows the location of the landslide, and the yellow arrow shows the location of the high point of the wave sweeping over the headland. Damage to a tree at the mouth of the bay from the wave. Hat placed on stump for scale. The effects of the tsunami still visible in 2010.
The landslide, which took place last year in September, triggered a massive tsunami in Dickson Fjord, creating puzzling tremors and a planet-wide “hum”, scientists said.
Eastern Greenland had never experienced a landslide and tsunami like this before, Svennevig said. It shows new areas of the Arctic are “coming online” for these kinds of climate events, he added.
Evacuate inland or to higher ground above and beyond designated tsunami hazard zones or move to an upper floor of a multi-storey building, depending on your situation.
[3] [4] [5] Svennevig et al. (2024) recreated the dynamics of the landslide using the available seismic data and estimate it achieved a peak velocity of 42 meters per second. [5] The initial failure triggering the landslide was 150 m thick, 480 m wide and 600 m long, made of a large block of metamorphic rock. [ 5 ]
In California there’s a Tsunami Preparedness Week, and several areas along the coast have signs reading “Tsunami hazard zone: In case of earthquake go to high ground or inland.”