Traces of a very large landslide that happened long ago on the seabed, found a few mil south of Karlskrona.
What you see is a one mil long scar on the bottom. There has formed a scree as high as a four-story building.
It is surprising that there has been such a big landslide in the Baltic Sea, says Fredrik Klingberg, marine geologist at the Geological Survey of Sweden SGU, which has mapped traces of the landslide.
– So this is an absolutely incredible, gigantic formation that are down there. And that is something that we were very amazed. We did not know that there were landslides at all in the Baltic Sea. And yes, we have to wonder understood what it has meaning, says Fredrik Klingberg.
A response to the question could be that if there is new exceeded even in our present day, it would possibly be a threat to cables and pipelines on the seabed. A major landslide could also trigger a tsunami.
The first signs that there might be something interesting on the seabed off the Blekinge found the Geological Survey of Sweden in 2005.
This summer a survey that confirmed that there had once been a major landslide, and how the traces it looks. But when it may have occurred is not certain. Possibly it was for 11,500 years ago when istids-ice was melting. It was a period when large quantities of meltwater flowed into the Atlantic Ocean.
– And then we believe that it could have been so much pressure changes in the ground here so that it is pressed out of clay and created landslides. But we really know nothing about when it happens, says Fredrik Klingberg.
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