Talk:Barchan

The name "barchan"

So, where does the term "barchan" come from? What language?--203.73.103.71 05:11, 3 June 2006 (UTC)

• According to Mirriam-Webster: Russian barkhan, from Kazakh Haligonian1 22:13, 28 June 2006 (UTC)

• As far as I know it is arab, and means "horn", referring to the horns of the dune.

Megabarchan

The link to Megabarchan redirects to 'Dune'. A little counterproductive, no?

Two numbers for one angle?

In the text the angle of repose is 32 degrees, in the drawing 34 degrees. —Preceding unsigned comment added by 84.163.11.55 (talk) 09:44, 7 November 2009 (UTC)

such ferocity!

"fierce winds, strong enough to move sand and dust"? ...let me just chisel a word out of that and we'll be fine. 94.66.34.169 (talk) 08:37, 6 February 2012 (UTC)

Solitons

There's some discussion of solitons in this article which is unclear. Firstly, it's unreferenced. Secondly, it's unclear whether solitons are "smaller dunes" or "waves of light, sound or water" (presumably the latter). Finally, the article says that particles in a soliton "pass through each other". Surely that's not true for water, sand or sound. It's only true for massless photons. Pburka (talk) 14:15, 16 March 2013 (UTC)

'The dunes emulate soliton behavior, but unlike solitons, which flow through a medium leaving it undisturbed (think of waves through water), the sand particles themselves are moved.' Does that disqualify sand dune motion from being soliton motion? Water particles do move when there is a surface wave in water. Don't barchans satisfy the properties of solitons that Drazin and Johnson give (see Soliton), and aren't they governed by the same 'shallow-water-like' equations? --jftsang 10:59, 15 June 2015 (UTC)

Pronunciation?

How is this word pronounced? Is the "ch" as in "church", or as in the Scottish "loch", or a hard "k" as in the typical English pronunciation of loch? (I'm guessing the latter, given the alternative spelling of "Barkhan", although that could also imply a long "ah" sound afterwards). Iapetus (talk) 08:41, 10 May 2013 (UTC)

External links modified

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