This story appears in the November 2012 issue of National Geographic magazine. I got my first lesson in the physics of sand dunes in 1998 on an expedition into the Sahara. In order to take aerial ...

Primary dunes are composed of sand blown directly from the beach face (active beach), whereas secondary dunes develop following the subsequent modification of primary dunes. Davies (1980 ...

The difference is a matter of size: ripples are small ridges of sand with a height (amplitude) typically less than 4 cm and wave lengths (crest to crest) less than 60 cm, while dunes have the same ...

In addition, these sand dunes act as a vital natural barrier to the power of the waves. As sand dunes establish, plants start to form and grow in size along the sand dune. Primary vegetation gives ...

Nairn Beach — Nairn ... "Nowhere else I'd rather be on a sunny afternoon. Pure white sand, sand dunes and the views of the Moray Firth and Black Isle." 20. Barafundle Beach — Stackpole ...

Number of acres for oil and gas leasing deferred in 2018 due to lack of consultation regarding lands owned by the Navajo Nation Great Sand Dunes National Park and Preserve protects over 100,000 acres ...

SO WE GET TO USE ALL THAT SAND, SAND THAT WOULD NORMALLY GET TOSSED BACK INTO THE OCEAN WILL INSTEAD BE USED TO REBUILD THE DUNES. THE COUNTY RECENTLY APPROVED NEARLY $8 MILLION TO MAKE THIS ...

These dunes are the reason Piscinas has been nicknamed the “Little Sahara of Italy” and has some of the highest sand dunes in Europe. Piscinas is surrounded by sand dunes formed by the ...

Appearances can be deceiving. At first glance, you'd never think the rolling white sand dunes of southeastern New Mexico and west Texas held the largest stand of oak in the country. The region's ...

Waves as high as "three or four-storey buildings" whipped up by ex-Tropical Cyclone Alfred have gouged millions of cubic metres of sand from about ... metres high in some dunes, including on ...