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A Mini-Tsunami in the Oslofjord

According to research published in the “Journal of Fluid Mechanics” by the University of Oslo’s John Grue in 2017, Flaskebekk, a small community at the water’s edge, deep within the Oslofjord, regularly experiences so-called “ship-driven mini-tsunamis”. Tsunamis are very long waves that occur when large volumes of water are displaced. This type of wave is typically generated by earthquakes or rock slides. At Flaskebekk, however, the mini-tsunamis seem to be caused by large ships passing areas of the fjord where there are pronounced variations in sea depth.

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