![]() ![]() Fueled initially by BBCs television presentation “Megatsunami, Waves of Destruction” and given second wind by “Yes it will”, “No it won’t” arguments among tsunami researchers, mega-tsunami captured public imagination. ![]() Moreover, the largest landslides of the bunch were predicted to parent tsunami that dwarf any quake-generate one. Folks living near shorelines that never faced risk of quake-generated waves suddenly found themselves exposed. ![]() With the recognition of abundant landslides underwater, recognition of their tsunami hazard followed. Like terrestrial slides, the submarine slides spanned a vast range of volume from 1000 km 3. With accelerating increases in sonar technologies, scientists began spotting undersea landslides everywhere - in submarine canyons, on continental slopes, adjacent to seamounts, and off the flanks of oceanic volcanoes. Certainly this year’s events in the Indian Ocean forged the change, but the turn began earlier primarily due to massing information about “exotic” tsunami sources like submarine landslides. The past few years however have noticed a change of tide (sorry about that) in tsunami perceptions. There happened the occasional tsunami in Japan or Central America and the odd Pacific warning issued for never-materialized waves, but not much grabbed people’s attention for long. Truth to say, for most of the three decades that we’ve been involved, tsunami research has been a fairly sleepy field. ![]()
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