Vast freshwater reserves discovered under the ocean floor which could supply future generations
- Researchers make discovery on continental shelves off Australia, China, North America and South Africa
- Discovery comes as UN estimates suggest water use has been growing at more than double the rate of population over the last century
Vast freshwater reserves have been discovered under the ocean floor which scientists believe could sustain future generations.
Australian researchers claim to have found 500,000 cubic kilometres (120,000 cubic miles) of freshwater buried beneath the seabed on continental shelves off Australia, China, North America and South Africa.
The discovery comes as United Nations estimates suggest water use has been growing at more than twice the rate of the population of the world over the last century.
Australian researchers have discovered vast freshwater reserves beneath the seabed on continental shelves
Lead author Vincent Post, from Flinders University, said: ‘The volume of this water resource is a hundred times greater than the amount we've extracted from the Earth's sub-surface in the past century since 1900.
‘Freshwater on our planet is increasingly under stress and strain so the discovery of significant new stores off the coast is very exciting.
‘It means that more options can be considered to help reduce the impact of droughts and continental water shortages.’
According to UN Water estimates, water use has been growing at more than twice the rate of population in the last century due to demands such as irrigated agriculture and meat production.
More than 40 per cent of the world's population already live in conditions of water scarcity. By 2030, UN Water estimates that 47 per cent of people will exist under high water stress.
Scientists hope the discovery will help reduce the impact of droughts and continental water shortages
Mr Post said his team's
findings were drawn from a review of seafloor water studies done for
scientific or oil and gas exploration purposes.
‘By
combining all this information we've demonstrated that the freshwater
below the seafloor is a common finding, and not some anomaly that only
occurs under very special circumstances,’ he said.
The
deposits were formed over hundreds of thousands of years in the past,
when the sea level was much lower and areas now under the ocean were
exposed to rainfall which was absorbed into the underlying water table.
When the polar icecaps started melting about 20,000 years ago these coastlines disappeared under water, but their aquifers remain intact - protected by layers of clay and sediment.
Post said the deposits were comparable with the bore basins currently relied upon by much of the world for drinking water and would cost much less than seawater to desalinate.
Drilling for the water would be expensive, and Post said great care would have to be taken not to contaminate the aquifers.
He warned that they were a precious resource.
‘We should use them carefully: once gone, they won't be replenished until the sea level drops again, which is not likely to happen for a very long time,’ Mr Post said.
- Russian army's rocket launch test goes terribly wrong
- The moment comedienne Amy Schumer falls in front of Kimye
- Touching moment 102-year-old Alice Barker sees herself on...
- Kim Richards leaves hotel after explosive Dr Phil interview
- Trooper shoots motorcyclist in chase then drop-kicks him
- Cruise liner smashed by 40ft waves as huge storm hits Sydney
- Boston Bomber casually filmed flipping off to camera in jail...
- Cleveland kidnapping survivors speak in promo for ABC...
- Shocking reactions when homeless man offers people money
- Blake Lively stumps Jimmy Fallon while playing 'Say...
- Fan knocked unconscious by a foul ball in Pittsburgh
- Passengers speak of terrifying ordeal on battered Carnival...
- Treat a lady like a wh**e, and a wh**e like a lady': David...
- What goes up, must come down! Russian army’s rocket launch...
- Uber passenger horrified after being charged $16,000 for...
- 'Bookkeeper of Auschwitz' tells court he once spent 24 HOURS...
- EXCLUSIVE: 'F***!' Crazed Kim Richards bolts from Dr. Phil...
- 'My baby with Ariel Castro was an angel from my dead mom and...
- 'There are people who get up and go to work every day. This...
- Coffee isn't made from beans, you can't see the Great Wall...
- Is this the photo that will kill Boston Bomber? Footage of...
- Teen girl 'who beat and held her friend down to be raped...
- 'Was that me?' Touching moment 102-year-old woman who was a...
- Terror in the air as passengers start to pass-out on...