Traces of a giant landslide deep in the southern Baltic Sea—researchers investigate a potential tsunami

Off the coast of Blekinge, in southern Sweden, at a depth of around 50–60 meters, the bottom sediment has scars that are tens of kilometers long and appear to have been caused by a huge submarine landslide. However, what caused this landslide and exactly when it may have occurred are unknown. The Geological Survey of Sweden investigated the bottom layers and documented the scar in 2014, and now Elinor Andrén, professor of environmental science at Södertörn University, and nine other researchers will try to discover what happened.