Experimental Study on Pyramid Sand Ripples With Wind Tunnel Simulating Technique

The pyramid dune was named after its morphology similar to pyramids on the banks of the Nile River. They are also called star dunes as their plane figures are similar to multi-angular stars. In recent decades there still remained considerable arguments on the formation mechanism of the pyramid dunes although scientists have conducted a lot of work in the field of eolian sand geomorphology.