Geophysical Research Abstracts, Vol. 5, 10948, 2003 c European Geophysical Society 2003 A PARAMETRIC STUDY OF TSUNAMIS GENERATED BY SUBMARINE SLIDES OFF WESTERN NORWAY F. Løvholt (1), C. B. Harbitz (1), K. B. Haugen (1), S. Bondevik (2) (1) Norwegian Geotechnical Institute, (2) University of Tromsø (Finn.firstname.lastname@example.org/Fax: +47-2223-0448) The Storegga slide is one of the largest submarine slides in the world, and occurred about 8000 calendar years BP. Evidence of a tsunami generated by this slide event have been found along the coast of Norway, Scotland and the Faeroe Islands. Based on the reconstructed bathymetry of the sediments before slide release, the Storegga slide tsunami has been simulated and compared with observed run-up heights along the coastline of Norway. For assessment of possible future tsunamis in the slide area, a parametric study of tsunamis generated by smaller slides has been performed. The surface elevation is analysed along the coastline of Norway, and presented as function of the slide dynamics, the volume and conﬁguration of the slide as well as the posi- tion in the bathymetry. Recent observations and analysis have indicated strongly that the Storegga slide was a continuos retrogressive slide process. An assessment of the effects of a retrogressive slide movement on the wave structure is ﬁnally presented.
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