Thursday, December 05, 2013

Stølum number timelapse river changing course science gif

Science in GIFs: Measuring the meanderiness of a river

The meanderiness of a river, its Stølum number, is defined as the length the water travels from source to finish (blue curve) divided by the direct distance (red line).  This can change chaotically as a river changes coarse, forming Ox bow lakes. The ratio is often found to converge to (but rarely exceed) 3.14, roughly pi. Via

Iqbal Mohammed is Head of Innovation & Strategy at a digital innovation agency serving the DACH and wider European markets. He is the winner of the WPP Atticus Award for Best Original Published Writing in Marketing & Communication.

He blogs about #innovation, #technology and #marketing at You can reach him via email or Twitter.