I watched Bølgen last evening. The movie is based on a very real geologic hazard (Oppikofer and others, 2009). The film was very well done and was a fair representation of what I know of the landslide and the hazard it poses. It far exceeds any geology disaster movie.
Large landslide displacement waves have been generated in Lake Roosevelt. There is an oral history of a landslide displacement wave that struck Hat Island off of Everett (TulalipHMP2010Sec3b.pdf) and landslide generated waves are recognized as a potential hazard (Puget Sound Tsunami Sources 2002 Workshop). An estimated 2-meter landslide displacement wave was reported Dabob Bay from a 1997 landslide (Phillips, personal communication).
Large landslide displacement waves have been generated in Lake Roosevelt. There is an oral history of a landslide displacement wave that struck Hat Island off of Everett (TulalipHMP2010Sec3b.pdf) and landslide generated waves are recognized as a potential hazard (Puget Sound Tsunami Sources 2002 Workshop). An estimated 2-meter landslide displacement wave was reported Dabob Bay from a 1997 landslide (Phillips, personal communication).
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