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 Naslov: H20
PostPostano: 17 lip 2015, 20:22 
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http://rt.com/news/267898-nasa-study-world-water/

Satellites show world is running out of water - new NASA study
Published time: June 17, 2015 18:02 Get short URL

The world is losing its underground water resources at an alarming rate, as the world’s quickly depleting aquifers put millions of people at risk due to dwindling water supplies, new NASA research claims.

A joint study conducted by scientists from NASA and the University of California has revealed that the world’s water reserve levels have become dangerously low.

The main reason is humanity’s constantly growing demand for water.

The researchers have concluded that “significant segments of Earth’s population are consuming groundwater quickly without knowing when it might run out.”

The research findings were published in the Water Resources Research journal on Tuesday.

The scientists used NASA’s twin Gravity Recovery and Climate Experiment (GRACE) satellites between 2003 and 2013 to take precise measurements of the world’s groundwater reservoirs, yielding the most detailed view of the planet’s underground water reserves to date. The GRACE satellites detected changes in the Earth’s gravitational pull, as large volumes of water under the ground create stronger gravitation.

“This has really been our first chance to see how these large reservoirs change over time,” said Gordon Grant, a research hydrologist at Oregon State University, who was a member of the research team.

The study has showed that about one third of Earth’s largest groundwater basins – 13 of the planet’s 37 – are being rapidly depleted while receiving little to no recharge.

Read more
Water-less Washington: State declares drought emergency
“Given how quickly we are consuming the world’s groundwater reserves, we need a coordinated global effort to determine how much is left,” said UCI professor and principal investigator Jay Famiglietti, who is also the senior water scientist at NASA’s Jet Propulsion Laboratory in Pasadena, California.

Underground aquifers supply up to 35 percent of the water used by humans worldwide, being the primary source of freshwater for approximately two billion people, according to the study.

Natural cataclysms such as drought can increase that demand.

“As we’re seeing in California right now, we rely much more heavily on groundwater during drought,” said Famiglietti. “When examining the sustainability of a region’s water resources, we absolutely must account for that dependence.”

The extremely stressed aquifers are situated in relatively poor, densely populated areas, such as northwest India, Pakistan, and North Africa, where there are almost no alternatives to underground water supplies.

The world’s most stressed aquifer, which is being rapidly tapped with no recharge at all, is the Arabian Aquifer which supplies water for more than 60 million people, followed by the Indus Basin in India and Pakistan, and the Murzuk-Djado Basin in Libya and Niger.

Global warming is making the regions near the equator drier, leading to a situation where people have to tap more water from aquifers to solve the issue of water scarcity.

Most of the groundwater used for human consumption does not go back down to aquifers, but evaporates or is dumped into the rivers along with production and utilization wastes, eventually ending up in ocean.

The scientists emphasize that water-insensitive industrial activities put serious strain on the health of aquifers, leading to their rapid depletion. In the Australian Canning Basin, for example, less than 1 percent of the aquifer is covered by residential areas, yet it ranks third in rate of depletion according to the GRACE research. Scientists suspect the rapid exhaustion of reserves may be due to mining activities in the area.

Alexandra Richey, the research project’s leading scientist, said the team has tried to warn the international community and call for active management of water resources today, in order to protect the future.

“We don’t actually know how much is stored in each of these aquifers. Estimates of remaining storage might vary from decades to millennia,” said Richey. “In a water-scarce society, we can no longer tolerate this level of uncertainty, especially since groundwater is disappearing so rapidly.”

A 2012 Japanese study suggested that up to 40 percent of the sea-level rise observed in the last ten years can be accounted for by groundwater flushed into the ocean after human use.

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:25 
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Pridružen/a: 05 lis 2010, 11:48
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Misli li se na fosilnu vodu ili običnu pod zemljom ?
Židovi su svoju fosilnu davno sprdili. i sad valja čekati milijune godina. To je ona famozna legenda o "povrću u pustinji".

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:29 
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Pridružen/a: 16 lip 2012, 23:09
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Pa podzemne vode, kakve sad fosilne? Piše o nekim velikim podzemnim rezervoarima, a zanimljiva mi je jako ova poslednja rečenica, da okeani rastu jer ljudska upotreba vode istu crpi iz tih podzemnih rezervoara i preko rijeka šalje u mora i okeane...

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:38 
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Pridružen/a: 05 lis 2010, 11:48
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Fosilne su one na velikim dubinama. Samo jako bogate države to mogu pumpati. Nastajale filtriranjem milijunima godina i najčistija voda na planeti. Ne protiče, stoji na jednom mjestu u rezervoaru.
U slučaju bilo kakve svjetske kataklizme to je garant opstanka ljudi u tom regionu. Zato je glupo to pumpati za zalijevanje povrća, kako su Židovi radili. Arapi to rade masovno.

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:42 
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Pridružen/a: 16 lip 2012, 23:09
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Ne možeš reć fosilna voda majka mu stara, fosilna su goriva jer su nastale od fosila, voda nije.

EDIT: Izvinjenje, izgleda da možeš:

https://en.wikipedia.org/wiki/Fossil_water

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:45 
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Pridružen/a: 05 lis 2010, 11:48
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Lokacija: Županija Herceg-Bosna
Tako su to ludi Libijci radili prije rata. Pazi na promjer cijevi.

slika

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:48 
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Pridružen/a: 16 lip 2012, 23:09
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Trebalo bi kakvo crijevo sprovest da se to vraća dole i eto ti rješenja za porast nivoa mora...

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 20:51 
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Pridružen/a: 05 lis 2010, 11:48
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Ili nek ljudi ne grade balkone i terase iznad vode za ispijanje kava uživajući u zalasku sunca preko mora. Briga me za to.

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 21:01 
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Pridružen/a: 05 lis 2010, 11:48
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Jordanci se sjebali, fosilna voda im radioaktivna. :laugh

Čitav arapski svijet to masovno pumpa i koristi. Kad nestanu zalihe Europa će im moći prodavati vodu skuplje nego oni prodaju naftu.

http://news.nationalgeographic.com/news ... vironment/

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 21:07 
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Pridružen/a: 05 lis 2010, 11:48
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Lokacija: Županija Herceg-Bosna
Citat:
Time—and Water—Running Out

In other nations the crisis is far more immediate—especially in Yemen, said Oxford's Mike Edmunds. The Middle Eastern country depends on fossil water—but can't expect to do so for much longer, according to Edmunds. "The Sana'a Basin is down to its last few years of extractable water," he said.

Worsening the situation is Yemen's tenuous government, shaky economy, and role as a haven for terrorists.

No one knows what will happen when it runs out—but Yemen’s fossil water will soon be a thing of the past.


Žalosno. U jednu ruku su morali tako, u drugu možda i nisu. Sami su krivi jer nemaju nikakvu kulturu ograničavanja nataliteta. Samo se krkaju a svaka nova rođena osoba treba svoju količinu vode i resursa. Bliski Istok i planiranje. Kinezi su za njih nobelovci.

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 Naslov: Re: H20
PostPostano: 17 lip 2015, 22:21 
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Pridružen/a: 05 lis 2010, 11:48
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Saudijska Arabija 72% svoje vode dobiva od fosilnih voda. Samo 8% od pročišćavanja morske vode. Procjenjuje se da su već potrošili 90% rezervi fosilne vode i da neće duže od 20 godina ostatak potrajati.
Što je najgore glupe vlasti dijele državne poticaje farmerima za neke kulture koje troše ogromne količine vode.

I što kad se to potroši ? Hoće piti naftu. Sve češći i gori ratovi će kod njih biti, obično tako bude.

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 Naslov: Re: H20
PostPostano: 18 lip 2015, 08:53 
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Pridružen/a: 16 lip 2012, 23:09
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Pa desalinizacija valjda...

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 Naslov: Re: H20
PostPostano: 18 lip 2015, 09:00 
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Pridružen/a: 05 lis 2010, 11:48
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Ne mogu pokriti sve. Samo 8% od toga ide.

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