Flaskebekk, a small community on the edge of the Oslofjord, regularly experiences what are being termed as 'mini-tsunamis', ostensibly caused by large ships passing areas of the fjord with pronounced variations in water depth. These waves, which are eroding the foundations of Flaskebekk's boathouses and docks, can reach 1.5 m in height, with a period of 30-60 seconds.
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