Volcanic steam ring

Volcanic steam ring

E380/0492 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 40.4MB

Downloadable file size: 4.3MB

Price image Pricing

Please login to use the price calculator


Caption: Steam ring against the sky, after being blown from the Bocca Nuova vent of Mount Etna, a volcano on the Italian island of Sicily. Steam rings are generated when a pulse of steam is ejected from a near-cylindrical volcanic vent. The steam in the centre of the pulse is propelled by thermal forces, whereas the steam at the edge of the ring suffers drag from the surrounding air. This drag rotates the steam and forms this annular (ring- shaped) vortex that can remain stable for several minutes. This is directly analogous to blowing smoke rings. Photographed in 2000.

Release details: Model release not required. Property release not required.

Keywords: 2000, annular, blowing, bocca nuova, circle, circular, europe, european, fluid dynamics, gas, geology, italian, italy, mount etna, mountain, mt, mt., physics, ring, sicily, sky, smoke, steam, vapour, vent, venting, volcanic, volcano, volcanology, vortex, vorticity, vulcanology

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.