Navigation Links
'Short-circuit' found in ocean circulation

Scientists have discovered how ocean circulation is working in the current that flows around Antarctica by tracing the path of helium from underwater volcanoes. The details are published in Nature this week.

The team, led by Alberto Naveira Garabato of the National Oceanography Centre, Southampton (formerly based at the University of East Anglia), has discovered a 'short-circuit' in the circulation of the world's oceans that could aid predictions about future climate change.

This process in the Southern Ocean allows cold waters that sink to the abyss to return to the surface more rapidly than previously thought.

This affects the Southern Ocean circulation, which links all the other oceans, and is also relevant to uptake and release of carbon dioxide by the sea ?transport between the deep and surface waters in the Southern Ocean is particularly important for this process.

Understanding oceanic circulation is important because it distributes heat, carbon and nutrients around the globe and therefore plays a central role in regulating Earth's climate.

The findings show that much of the overturning circulation - how water moves and mixes vertically - around Antarctica takes place just around the tip of South America and in the small region in the Atlantic south of the Falklands, called the Scotia Sea.

Co-author Prof Andrew Watson, from the University of East Anglia’s School of Environmental Sciences, said they were fundamental findings.

“The Southern Ocean is the least well understood part of the world ocean, but one of the most important parts. We are going to have to understand its circulation before we can make really confident predictions about how the climate is going to change over the next 100 years.

“This is a piece of knowledge that will help us do that. This tells us how an important part of it works?

The research shows that a combination of rapid mixing across and rap id movement along density surfaces creates a 'short-circuit' in the overturning circulation, meaning it is more concentrated in this part of the Southern Ocean.

The researchers made use of a unique signal - the spread of helium released naturally from the Earth’s interior at deep vents in the Pacific. The helium dissolves in the deep sea and a plume of this marked water travels down the coast of Chile. It is injected at depth into the Antarctic current on the Pacific side of Cape Horn.

It then streams through into the Atlantic with the current, but in the process is spread, shifted and diffused by the circulation. Measurements of this spreading of the helium were used to deduce the ‘short-circuit?

Source:University of East Anglia

Related biology news :

1. New component of the brakes on nerve regeneration found
2. Strongest proof yet found for prion hypothesis
3. A puzzle piece found in unraveling the wiring of the brain
4. New World founders small in number
5. Norovirus found to cause travelers diarrhea
6. Pair of cancer genes found to drive both cell migration and division
7. Alien woodwasp, threat to US pine trees, found in N.Y.
8. Achilles heel of the herpes virus possibly found
9. Purdue scientists may have found key to halting spinal cord damage
10. Unexpected lock and key mechanism found for the assembly of tumor blood vessels
11. New protein vital for immune response is found in surprise location

Post Your Comments:

(Date:10/29/2015)... , October 29, 2015 ... biometric authentication company focused on the growing mobile ... wallet announces that StackCommerce, a leading marketplace to ... featuring the Wocket® smart wallet on StackSocial for ... ) ("NXT-ID" or the "Company"), a biometric authentication ...
(Date:10/27/2015)... , Oct. 27, 2015 In the ... issues of concern for various industry verticals such as ... due to the growing demand for secure & simplified ... various ,sectors, such as hacking of bank accounts, misuse ... electronic equipment such as PC,s, laptops, and smartphones are ...
(Date:10/27/2015)... Synaptics Inc. (NASDAQ: SYNA ), the leader ... adopted the Synaptics ® ClearPad ® Series ... newest flagship smartphones, the Nexus 5X by LG and ... --> --> Synaptics works closely with ... in the joint development of next generation technologies. Together, ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... , Nov. 24, 2015  Tikcro Technologies Ltd. (OTCQB: TIKRF) today ... December 29, 2015 at 11:00 a.m. Israel time, ... Tower, 98 Yigal Allon Street, 36 th Floor, Tel ... Eric Paneth and Izhak Tamir to the Board ... Skaliter as external directors; , approval of an amendment to certain ...
(Date:11/24/2015)... FRANCISCO , Nov. 24, 2015  Twist ... announced that Emily Leproust, Ph.D., Twist Bioscience chief ... Jaffray Healthcare Conference on December 1, 2015 at ... Hotel in New York City. --> ... . Twist Bioscience is on Twitter. ...
(Date:11/24/2015)... ... November 24, 2015 , ... InSphero AG, the leading ... culture models, has promoted Melanie Aregger to serve as Chief Operating Officer. ... on the management team and was promoted to Head of InSphero Diagnostics ...
(Date:11/24/2015)... QC , Nov. 24, 2015 /CNW Telbec/ - ProMetic ... "Corporation") announced today that Mr. Pierre Laurin , President ... corporate presentation at the upcoming Piper Jaffray 27 th ... Palace Hotel, on December 1-2, 2015. st ... available for one-on-one meetings throughout the day. The presentation will ...
Breaking Biology Technology: