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MensagemEnviado: sábado mar 26, 2011 6:15 pm 
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Registado: terça ago 11, 2009 6:18 pm
Mensagens: 2153
Localização: Lisboa/Portugal/Planeta Terra :)
Faca do fórum Nr: 25
Faca preferida:: Mora; FF25; CS RS
Como o Indigo sugeriu aqui fica um tópico apenas para debater o interessante assunto de existir um mar de água potável por debaixo do Sahara.

Nubian Sandstone Aquifer System - Wikipedia, the free encyclopedia -
https://secure.wikimedia.org/wikipedia/ ... fer_System

Para a discussão política sobre o assunto, está aberto o tópico abaixo.
Líbia um possível oásis de Permacultura?

"Under the Sahara lie three major aquifers, strata of saturated sandstones and limestones that hold water in their pores like a wet sponge. The easternmost of these, extending over two million square kilometers, underlies all of Egypt west of the Nile, all of eastern Libya, and much of northern Chad and Sudan, and contains 375,000 cubic kilometers of water—the equivalent of 3750 years of Nile River flow. It is called the Nubian Sandstone Aquifer System, and lately it has come to the attention of practitioners of a subspecialty of nuclear science known as isotope hydrology."
http://www.saudiaramcoworld.com/issue/2 ... .sands.htm

"While many countries in the Middle East and North Africa bicker over water rights, Libya has tapped into an aquifer of 'fossil water' to change its topography – turning sand into soil. The 26-year, $20 billion project is nearly finished. "
http://www.csmonitor.com/World/Africa/2 ... sert-farms

"Equally, what makes this idea of transporting electricity to as far as northern Europe even more economically realistic is the low leakage rates. That is, for each 1000 km that electricity is transported along wires, only about 3% is lost. So as an approximate example, if we said electricity were to be transported from say Libya to the UK, only 10% to 15% of power would be lost. This is apparently considered a very acceptable loss in the industry when compared to other conventional power transmission methods where the loss can exceed 50%."
"Moreover, since this report came out, there has been some encouraging progress in Libya on the practical front regarding the issue of solar power. In October this year (as reported by the Tripoli Post in issue 171) the U.S. Department of Energy (DOE) announced that it was sending a team of experts from its National Renewable Energy Laboratory in Colorado to collaborate on concentrating solar power in Libya. The DOE confirmed that Libya, with its low humidity and numerous sunny days, had the ideal conditions for the possible exploitation of solar power technologies.

This is indeed encouraging news. Libya has an area of almost 1.8 million square kilometres, 90% of which is hot sunny desert. Libya, through its proximity to mainland Europe, already supplies Europe energy by pipeline via the Greenstream pipeline - the longest sub-sea pipeline in the Mediterranean. If this new technology is realized, it would hopefully put Libya in the centre of any future post-oil era energy industry. It is up to Libya to try to exploit its natural advantages and create a niche - a comparative advantage – for itself in this solar energy sector. This way it will use some of its oil-derived income of today to hopefully secure a future for Libyans tomorrow. "

"They who would give up an essential liberty for temporary security, deserve neither liberty or security."
Benjamin Franklin

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