Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

Satellites are showing how bad Earth's water supply problem is getting

RATE THIS! +37
Posted in Science on 18th Jun, 2015 06:45 PM by AlexMuller

We live on a planet that is mostly covered in water, but only a small portion of that liquid is drinkable. There are freshwater rivers and streams, but increasingly, we rely on aquifers, natural stores of freshwater found deep in the earth to quench our growing thirst. Unfortunately, those watery reserves are drying up.

 

In a new study published in Water Resources Research, scientists working with data from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites found that a third of the 37 largest aquifers around the world are seriously stressed. Stress isn't good for anyone, and its especially bad for water supplies. In this case, 'stressed' means that people are withdrawing more water from the aquifer than is coming in.
 
The study found that 21 of the aquifers are being depleted, with more going out than coming in. Of the 21 unsustainable aquifers, 13 are highly distressed. The worst 8 are classified as overstressed, with almost no water flowing back in to the aquifers. Regions that are particularly dry rely on aquifers the most, drawing on them for home, industrial and agricultural uses.
 
In the United States, the Californian Central Valley Aquifer System is in the worst shape. No surprise, given the fact that California has been in a drought for years. But overall, the dubious distinction of 'Most Stressed Aquifer In The World' (not a real award) went to the Arabian Aquifer System, a groundwater supply that supports 60 million people in the middle of a vast desert.
 
So, how much water do we have left in the aquifers? Unfortunately, we're just not sure. An accompanying paper says that scientists have very little information about how much water is left in any particular aquifer. “Estimates of remaining storage might vary from decades to millennia,” Alexandra Richey, the lead author of both papers said in a press release.

Tags: NASAsatellitewateraquiferresources

Read original article » Back to category

Comments

Author: Guest
Posted: 2015-06-19
+1
There many ideas how to solve the paradox that there is so much water on earth and yet only a small proportion is usable for humans and many other life forms - one hopes that ideas such as desalination could work with some new technologies Reply


 

Recent headlines

  • Posted in Hardware on 2017-03-23 21:29:30
    A brain-computer interface for controlling VR with your mind..read more
    Posted in Business on 2017-03-23 21:17:44
    One Powerful Way the U.S. Could Boost Solar Adoption..read more
    Posted in Medicine on 2017-03-23 21:12:51
    Old blood can be made young again and it might fight aging..read more
    Posted in Science on 2017-03-22 07:41:30
    'Smallsats' open up new planetary frontier..read more
    Posted in Science on 2017-03-22 07:36:45
    Trump signs NASA funding bill, sets goal of human on Mars..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me