#kolk — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #kolk, aggregated by home.social.
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Kolk (vortex) (Oceanography 🌊)
A kolk is an underwater vortex causing hydrodynamic scour by rapidly rushing water past an underwater obstacle. High-velocity gradients produce a high-shear rotating column of water, similar to a tornado. Kolks can pluck multiple-ton blocks of rock and transport them in suspension for kilometres. Kolks leave clear evidence in the form of kolk lakes, a kind...