01464nas a2200241   4500000000100000008004100001100001900042700001400061700002100075700002100096700001800117700001300135700001900148700001700167700001200184700002000196700002200216245008500238856005500323300002200378490000700400520081500407       2012                            d1 aClaudio Iacono1 aEul\ acia1 aFilippo Zaniboni1 aGianluca Pagnoni1 aStefano Tinti1 aRafael e1 aDouglas Masson1 aRussell Wynn1 aNuno co1 aManuel De Abreu1 aJuan Da\~nobeitia00aLarge , deepwater slope failures : Implications for landslide-generated tsunamis  uhttp://geology.gsapubs.org/content/40/10/931.short  a931\textendash9340 v403 a<p>Deepwater landslides are often underestimated as potential tsunami triggers. The North Gorringe avalanche (NGA) is a large (\~80 km3 and 35 km runout) newly discovered and deepwater (2900 m to 5100 m depth) mass failure located at the northern flank of Gorringe Bank on the southwest Iberian margin. Steep slopes and pervasive fracturing are suggested as the main preconditioning factors for the NGA, while an earthquake is the most likely trigger mechanism. Near-field tsunami simulations show that a mass failure similar to the NGA could generate a wave \&gt;15 m high that would hit the south Portuguese coasts in \~30 min. This suggests that deepwater landslides require more attention in geo-hazard assessment models of southern Europe, as well as, at a global scale, in seismically active margins.</p>