Isaouane-n-Tifernine, Algeria : Highest Sand Dunes on the Earth


	Isaouane-n-Tifernine, Algeria : Highest Sand Dunes on the Earth

amgumen

7-15-2007 11:08 PM

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tags:

interesting, nature, science

1 Comment |

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7-19-2007 12:30 AM

syncopath

beautiful pic
these dunes are awesome
10x

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/339d3aff-3569-4a4f-8e98-3d8cf1f06b56/D844006D-6E5E-4B1E-91D1-B4AE954787D3/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://bbs.keyhole.com/ubb/showthreaded.php?Cat=0&Board=EarthNature&Number=299112" href="http://bbs.keyhole.com/ubb/showthreaded.php?Cat=0&Board=EarthNature&Number=299112" style="font-size: 11px;">bbs.keyhole.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://bbs.keyhole.com/ubb/showthreaded.php?Cat=0&Board=EarthNature&Number=299112"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/bbs.keyhole.com/img/BEDFD73E-39C1-419A-8561-54AA8256BD4F" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://bbs.keyhole.com/ubb/showthreaded.php?Cat=0&Board=EarthNature&Number=299112">The world's highest measured sand dunes are those in the Saharan sand sea of Isaouane-n-Tifernine in east-central Algeria. They have a wavelength of 5 km (3 miles) and attain a height of 465 m (1,526 ft). <BR /><DIV>The nearest oasis is 100 kilometers (62 miles) away. The structures within the dune field are highlighted by the evening Sun, giving a better perspective on their height and morphology. To the north of the photograph the dunes most frequently form in long crescents or "barchans" with a steep, convex face toward the prevailing winds from the west or southwest. To the south of the dune field star dunes predominate, indicating that there is no consistent wind direction there.</DIV></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/D844006D-6E5E-4B1E-91D1-B4AE954787D3/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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