Showing posts with label sand dunes. Show all posts
Showing posts with label sand dunes. Show all posts

Thursday, October 23, 2014

A line in the sand: Workers plant a web of shrubs in the desert to halt the advancing of sand dunes

Xinjiang, in Northwest China, is home to the country's biggest deserts. Fighting desertification is a constant for cities deep in the region, to avoid the fate of being buried like the ancient Loulan civilization more than 1,600 years ago.

The town of Qiemo, in the middle of the Taklimakan Desert, China's largest, has been fighting against the sand dunes pushing towards it. On the other side of the Qarqan River, the sand dunes are only two kilometers away at the nearest point. Three times in the town's history, the river running through it was diverted by shifting desert sands................the article and more images to...(Global Times)
23/10/14

Wednesday, March 12, 2014

Using sand for fracking: pros and cons

Disputes about pros and cons of fracking are still going on in the US, especially in Midwestern states. Although there are no fracking facilities in some Midwestern states, these states are now experiencing a big increase of the sand mining industry. The reason is that the process of fracking needs large amounts of sand.
The Christian Science Monitor describes the process as follows: “To extract the sand, mining companies scrape away the soil, break up the sandstone with explosives, and then crush it. The raw sand is washed, sorted by size, and shipped by truck, rail, and barge to fracking operations in the US and Canada. There the sand is mixed with water and chemicals and pumped underground, where the particles lodge in cracks and prop them open while gas or oil flows out.”

Friday, October 26, 2012

Video: Grains Shape the Songs of Sand Dunes

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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—but no one knew why they sang these different songs until now.

EL News