<prompt> Bhala ukuqhubeka kwalesi sigaba - Ukuvela kwama-tsunami athinta i-UK akuvamile, kwaziwa amabili kuphela mhlawumbe amathathu; igagasi eliphakeme ngamamitha amathathu ngenxa yokuzamazama komhlaba kwaseLisbon ngo-1755  <response>: , kanye ne-tsunami ephakeme ngamamitha angu-21 ngo-6100 BC okwenzeka ngaphansi kwezimo ezihluke kakhulu zokwakheka komhlaba i-Storegga Slide. Eminyakeni yamuva nje kuye kwaqoqwa ubufakazi obukhombisa ukuthi izikhukhula zaseBristol Channel zango-1607 kungenzeka futhi zabangelwa yi-tsunami eyaphakama isuka ekuphakameni kwamamitha amane yaya ngaphezu kwamamitha ayisithupha njengoba yayidlula emseleni. 