A parametric study of tsunamis generated by submarine slides in the Ormen Lange/Storegga area off western Norway

Tsunami generation by submarine slides have been a major concern in the risk assessment for the Ormen Lange gas field off Western Norway. Tsunamis are analysed with a numerical model supplemented by an analytical one. Both models show how slide extensions and slide dynamics influence the tsunamigenic potential for a large region. Several combinations of slide parameters were tested, and the product of initial acceleration and the volume of the slide gave the best correlation with the maximum surface elevation for the near coastal domain.