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Another issue is whether giant landslides occur as a single step failure (as argued for Hawaiian giant landslides) or multistage failures (as appears to be more common in the Canary Islands) [122] and stacking in turbidite deposits generated by landslides are a reliable indicator that these landslides occurred in piecemeal fashion. [123]
The Cumbre Vieja (Spanish pronunciation: [ˈkumbɾe ˈβjexa]; meaning "Old Summit") is an active volcanic ridge on the island of La Palma in the Canary Islands, Spain. [4] The spine of Cumbre Vieja trends in an approximate north–south direction, comprising the southern half of La Palma, with both summit ridge and flanks pockmarked by dozens of craters and cones. [5]
A tsunami warning was issued by the Pacific Tsunami Warning Centre covering Vanuatu, Fiji, the Kermadec Islands, Kiribati, New Caledonia, Papua New Guinea, the Solomon Islands, Tuvalu and Wallis and Futuna, [35] with waves expected to reach 1 m (3 ft 3 in). [47] This was lifted on 14:14 VUT. [29]
The subsequent mega-tsunami — one of the highest in recent history — set off a wave which became trapped in the bendy, narrow fjord for more than a week, sloshing back and forth every 90 seconds.
An animation of the earthquake swarm from the start until 19 September. An earthquake swarm started under Cumbre Vieja on 11 September 2021. It slowly migrated to the surface, with earthquakes of up to around mb Lg magnitude 3.5, [24] [25] and more than 22,000 earthquakes were recorded in the space of a week. [26]
Tsunami waves would batter the coast for 10 hours. Inland hillsides would liquify, taking out roads and bridges. Some 620,000 buildings would be critically damaged or collapse, including an ...
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.
The tsunami even washed over some of the Shetland Islands. Tsunamite (the deposits left by a tsunami) dating from this event can be found at various locations around the coastal areas of Scotland, and are also a tourist feature in the Montrose Basin , where there is a layer of deposited sand about 0.6 metres (2 ft) thick.