Paleo-tsunamis in Sweden

It has been possible to document seveal paleoseismic events in Sweden in th e period at around the deglaciation. A major earthquake occurred in the aut umn of varve 10,430 BP. It generated liquefaction over 320 km. Another even t occurred in varve 9663 BP It generated seismites over a distance of 210 k m. Both events also generated tsunamis. The tsunami wave of the 10,430-even t washed the strait between the Baltic and the North Sea free of ice so tha t marine water suddenly could invade the Baltic basin creating the so-calle d Yoldia Sea stage. The 9663-event set up a tsunami wave recorded in the ic e marginal sedimentology and shore morphology in such details that it seems possible to record a triple deformation/flow sequence. (C) 1999 Elsevier S cience Ltd. All rights reserved.