3/15/2023 0 Comments Sort tema slik![]() ![]() Over the course of millions of years, a huge volume of sediments have been brought into this area by a multitude of processes. To understand why an event like the Storegga slide could happen we have to go a long way back in time. Scientists* have estimated an area of 95 000 km2 was affected and that somewhere between 2400-3200 km3 of sediments were sent plummeting down into the abyss, creating a chasm in the former continental slope. It is the most recent of a series of submarine slides triggered right here at Storegga. The Storegga Slide is one of the world's largest known underwater landslides. (Multibeam data: MAREANO/The Norwegian Mapping Authority). The relatively flat continental shelf (shown in red colours) gives way to a hummocky continental slope (yellow to blue and purple colours), where the slide escarpment is clearly visible, tearing into the otherwise fairly straight shelf edge. These data reveal the dramatic and rugged landscape shaped by the landslide activity. Three dimensional visualisation of MAREANO multibeam data viewed from the north. This is the very place where, around 8150 years ago, the underwater landscape changed dramatically, and irreversibly, and started a chain of events which shook large parts of the North Atlantic. The Norwegian word ‘Storegga’ translates literally as ‘big edge’, and it is not without good reason that this part of the continental margin has a name of such proportions. In this story we take a step back and consider why the sea floor looks the way it does today. Nytt 1:1 million berggrunnskart over Norge.Forskingstorget om gull, glitter og konfliktar.Usikkerheter ved marin leire applikasjonen.
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