The most regularly shaped waterfall is Skógafoss, like an elongated page of a book. Let us have the same kind of analysis as for the the other famous waterfalls at hand.

There was not much water in it during the winter time, but the edge of it can be clearly seen. From above the alignment can be measured and compared with calculated direction of convection rolls:

No surprise, because it fits exactly to the expected value.
And above Skógafoss there are at least 25 smaller falls within the Skógá river. Are they aligned according to a formula too?
Published by Steingrimur Thorbjarnarson
I am a geologist, graduated from the University of Iceland, and taught geology for a few years. I have gained some knowledge about Earth's inner structure, so I provide this website as my contribution to answer one of the greatest questions remaining within the realm of geoscience. Experiments show that the mantle should form convection rolls when close to the melting point. I took this literally, and calculated the dimensions and shape of these mantle convection rolls. Then I compare that model with the surface. This makes it possible to provide many interesting examples about geology found on my blog.
View all posts by Steingrimur Thorbjarnarson