“…Buoyant jets and plumes are found in a variety of natural and engineering contexts, including industrial burners (Christopher et al 2018;Hayden et al 2019), hydrothermal vents (Gaskin & Wood 2001) and volcanic plumes (Campion et al 2018). Despite their obvious differences, each of these flows exhibit a similar 'puffing' phenomenon that results from the continuous injection of less dense fluid into a reservoir of more dense, ambient fluid.…”