Quantcast

Latest Antarctic circumpolar current Stories

Southern Ocean waves
2014-07-22 03:30:24

University of Southampton A new study has found that turbulent mixing in the deep waters of the Southern Ocean, which has a profound effect on global ocean circulation and climate, varies with the strength of surface eddies – the ocean equivalent of storms in the atmosphere – and possibly also wind speeds. It is the first study to link eddies at the surface to deep mixing on timescales of months to decades. This new insight into how the Southern Ocean behaves will allow...

Ocean Water Vertically Mixes As It Rushes Over Undersea Mountains
2013-09-19 07:58:02

April Flowers for redOrbit.com - Your Universe Online In the ocean near Antarctica, an international research team has solved the mystery of how deep and mid-depth ocean waters are mixed. The study, published in the journal Nature, reveals that sea water mixes dramatically as it rushes over undersea mountains in Drake Passage - the channel between the southern tip of South America and the Antarctic continent. This mixing of oceanic water layers is vital in the regulation of the Earth's...

Continuing Deep Ocean Change In The Southern Ocean
2012-05-22 03:53:13

New research by teams of Australian and US scientists has found there has been a massive reduction in the amount of Antarctic Bottom Water found off the coast of Antarctica. Comparing detailed measurements taken during the Australian Antarctic program's 2012 Southern Ocean marine science voyage to historical data dating back to 1970, scientists estimate there has been as much as a 60 per cent reduction in the volume of Antarctic Bottom Water, the cold dense water that drives global ocean...

67dc88be55d3b2f26a7324ecb03f2b80
2011-05-30 08:29:58

Thirty-eight million years ago, tropical jungles thrived in what are now the cornfields of the American Midwest and furry marsupials wandered temperate forests in what is now the frozen Antarctic. The temperature differences of that era, known as the late Eocene, between the equator and Antarctica were half what they are today. A debate has been ongoing in the scientific community about what changes in our global climate system led to such a major shift from the more tropical, greenhouse...

2011-05-26 21:20:17

Research led by Rensselaer Polytechnic Institute scientist finds evidence that early antarctic circumpolar current development impacted global climate Thirty-eight million years ago, tropical jungles thrived in what are now the cornfields of the American Midwest and furry marsupials wandered temperate forests in what is now the frozen Antarctic. The temperature differences of that era, known as the late Eocene, between the equator and Antarctica were only half of what they are today. A debate...

b1b6f80b676394b7307175f1d8c249fe1
2011-04-15 09:32:26

Wind blowing on the ocean is a crucial factor mixing the greenhouse gas carbon dioxide into the ocean depths and keeping it from going back into the atmosphere. For more than two decades scientists have suspected there's another "“ possibly substantial "“ source of energy for mixing that's generated in the ocean where cold, heavy water collides with warm, light water. However, there's never been a way to get enough measurements of such a "front" to prove this "“ until now....

2009-05-18 12:40:17

U.S. scientists say they have discovered a new pathway for the global ocean circulation known as the Great Ocean Conveyor. Researchers from the Woods Hole Oceanographic Institution and Duke University said the conveyor belt paradigm says the Gulf Stream-warmed ocean releases heat to the atmosphere in the northern North Atlantic, leaving ocean water colder and denser as it moves north. The cold waters then sink and flow southward along the deep western boundary current that hugs the...

7dfc6b29f4d8b950dacda5e2872bf1451
2008-11-24 14:20:00

A recent study has found that the Southern Ocean has proved more resilient to global warming than previously thought and remains a major store of mankind's planet-warming carbon dioxide. Oceans act as a brake on climate change by absorbing large portions of the extra CO2 released by mankind through burning fossil fuels or deforestation and experts say the Southern Ocean is the largest of these "carbon sinks." Researchers in the past have suggested the vast ocean between Australia and...

0e7767227d7553bca2e068c8e447b8681
2008-05-20 00:20:00

While studying eight Macquarie Ridge sea mountains scientists have discovered millions of starfish capturing food.The team of 19 marine scientists spotted the phenomenon while studying the region, which spans 875 miles from south of New Zealand toward Antarctica and is home to several underwater volcanoes.They had expected to discover the affects of global climate change while investigating the Antarctic Circumpolar Current, but the focus of the expedition became the underwater cameras'...

2005-08-30 14:33:21

New results shed light on how Antarctica became the icy, barren continent that we know today. British Antarctic Survey (BAS) scientists have discovered that 30-50 million years ago, South America and Antarctica split apart very rapidly. This formed the Drake Passage and resulted in a major global cooling. The findings are published in the latest issue of Earth and Planetary Science Letters. Lead Author Dr Roy Livermore says 'we deciphered the remarkable 'herringbone' pattern of ridges that...


Word of the Day
Cthulhu
  • A gigantic fictional humanoid alien god being described with a head resembling an octopus and dragon wings and claws, around whom an insane cult developed.
  • Pertaining to the mythos of Cthulhu and additional otherworldly beings created by H. P. Lovecraft or inspired by his writings and imitators.
This word was invented in 1926 by H.P. Lovecraft for his short story, 'The Call of Cthulhu.' 'Cthulhu' may be based on the word 'chthonic,' which in Greek mythology refers to the underworld.
Related