Spiral Flow in Rivers, Shallow Seas, Dust Devils, and Models

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Science  04 Jan 1963:
Vol. 139, Issue 3549, pp. 41-42
DOI: 10.1126/science.139.3549.41


Spiral flow has been observed in meandering rivers, braided rivers, very shallow sea water, model experiments, and dust devils. Experimental work also produced standing spiral waves and spouts of water. Many observed spirals reversed direction from time to time. Geometry of the system, roughness, and turbulence are perhaps dominant in the control of spiral flow.