====== Squeaky Sand ======

Sand on some beaches and dunes emits a distinct 'squeaking' sound when moved under pressure - e.g. by walking on it [[http://www.youtube.com/watch?v=bl7uf_445eo&feature=related|Videos here]]

It only affects certain types of sand - more rounded and drier grains generally don't squeak (as much). The underlying acoustic mechanism is as yet undiscovered.

More information from [[https://web.archive.org/web/20201107224139/https://www.abc.net.au/catalyst/squeaky-sand/11011298|ABC]] ,//'Catalyst'//,  Australia, [archived]

>//"We can land a remote controlled robot on Mars but we don’t know why sand squeaks here on Earth and to be honest I kinda like that."//
>\\ [ Ruben Meerman ]

[[http://www.sonicwonders.org/whistling-sands-wales/|A list of locations]]  where squeaking sands can be found is maintained by the Acoustic Engineering dept. at the University of Salford, UK.

----

Also see :[[content:earth_sciences:sand_dunes]]