{"id":231,"date":"2012-10-26T12:29:20","date_gmt":"2012-10-26T12:29:20","guid":{"rendered":"http:\/\/blogs.dickinson.edu\/arnoldt\/?p=231"},"modified":"2012-10-26T12:30:11","modified_gmt":"2012-10-26T12:30:11","slug":"halloween-special-the-secret-of-the-moaning-sands-revealed","status":"publish","type":"post","link":"https:\/\/blogs.dickinson.edu\/arnoldt\/2012\/10\/26\/halloween-special-the-secret-of-the-moaning-sands-revealed\/","title":{"rendered":"Halloween special – the secret of the moaning sands revealed."},"content":{"rendered":"

\"\"<\/a>Well it has nothing to do with the oceans or plants but today’s article from Jane Lee (Science magazine) highlighted new research we find fascinating.\u00a0 She writes: “When plagued by whipping desert winds, sand dunes signal their displeasure with haunting moans that reverberate across the arid landscape. Some emit single-note songs while others mimic a jumbled chorus\u2014but no one knew why they sang these different songs until now. New research published online this week in Geophysical Research Letters<\/em> finds that the size of sand grains shapes a dune’s song<\/a>. Scientists collected sand from a singing dune in Morocco that moans at around 105 hertz (Hz)\u2014or, to a musician, that’s G-sharp two octaves below middle C. They compared these notes to sounds from sand collected from a dune in Oman, which produces notes ranging from 90 Hz to 150 Hz (F-sharp to D). By creating mini-dune avalanches in the lab, scientists recreated these desert songs, finding that different layers of sand aren’t necessary to produce the moans, as previous researchers contended. They also found that when they sieved the Omani sand so that the grains were similarly sized, the resulting “avalanche” produced a single-note song. The synchronized movement of sand grains, they conclude, produces the famed moaning, while grain size determines the notes contained in the song.”\u00a0 See it….or rather HEAR it….at: http:\/\/news.sciencemag.org\/sciencenow\/2012\/10\/video-shot-for-fri.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Well it has nothing to do with the oceans or plants but today’s article from Jane Lee (Science magazine) highlighted new research we find fascinating.\u00a0 She writes: “When…<\/p>\n","protected":false},"author":1263,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-231","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/posts\/231","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/users\/1263"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/comments?post=231"}],"version-history":[{"count":0,"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/posts\/231\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/media?parent=231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/categories?post=231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.dickinson.edu\/arnoldt\/wp-json\/wp\/v2\/tags?post=231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}