Articles tagged "antarctica"

noctilucent sky dec 1 2019

Planetary wave supercharging noctilucent clouds over Antarctica

An atmospheric wave about half as wide as the Earth is supercharging noctilucent clouds (NLCs) in the southern hemisphere, with NASA's Aeronomy of Ice in the Mesosphere (AIM) spacecraft detecting the phenomenon in this series of south polar images from November...

December 05, 2019

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Antarctica ice still releasing radioactive chlorine from 1950 nuclear bomb tests, research finds

A recently published study found that Antartica's ice sheets are still emitting radioactive chlorine from marine nuclear weapon tests in the 1950s. This suggests that Antartica regions contain and release the radioactive element differently than what was...

October 16, 2019

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Active volcano heat source discovered under fastest-moving and melting glacier in Antarctica

Scientists have discovered active volcano heat source under Antartica's fastest-moving and melting glacier - Pine Island Glacier. The surprising find, published recently in Nature Communications, offers insight into the movement and melting of the Pine Island...

June 29, 2018

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Shallow M6.0 earthquake hits 265 km NE of Scott Island Bank, Antarctica

A strong and shallow earthquake registered by the USGS as M6.0 hit 265 km (164 miles) NE of Scott Island Bank, Antarctica at 11:37 UTC on February 2, 2018. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting the same magnitude and depth....

February 02, 2018

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Salt pond in Antarctica, among the saltiest waters on Earth, is fed from beneath

At the base of the Transantarctic Mountains lies a geological oddity. Don Juan Pond is one of the saltiest bodies of water on the planet, filled with a dense, syrupy brine rich in calcium chloride that can remain liquid to -50 °C (-58 °F), far below the...

November 17, 2017

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Mantle plume, a geothermal heat source under West Antarctic ice sheet

A new study adds to evidence that a geothermal heat source called a mantle plume lies deep below Antarctica's Marie Byrd Land, explaining some of the melting that forms lakes and rivers under the ice sheet. Although the heat source isn't a new or increasing...

November 12, 2017

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Scientists uncover largest volcanic region on Earth under West Antarctica

A remote survey suggested by third-year university student discovered 91 volcanoes in a massive region known as the West Antarctic Rift System. The volcanoes range in height from 100 m to 3 850 m (328 to 12 631 feet). A study conceived by a third-year student at the...

August 14, 2017

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Huge Antarctic iceberg finally breaks free

After months of ‘hanging by a thread’, a vast iceberg the size of Norfolk has finally broken off Antarctica’s Larsen C Ice Shelf. Around 30 m (98 feet) of this 190 m (623 feet) thick block of ice sits above the sea surface. Scientists now have...

July 12, 2017

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Macquarie Island sub-Antarctic research base gets multi-million dollar funding boost

Contrary to announcement made last month that Australia is about to close its permanent sub-Antarctic research base at World Heritage-listed Macquarie Island after almost 70 years of continuous presence, the government has instead decided to boost the funding and...

October 14, 2016

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Antarctic sea ice growth explained by natural variability

A newly published study offers evidence that the negative phase of the Interdecadal Pacific Oscillation (IPO), which is characterized by cooler-than-average sea surface temperatures in the tropical eastern Pacific, has created favorable conditions for additional...

July 05, 2016

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Two massive icebergs break off Nansen Ice Shelf, Antarctica

Two massive icebergs broke off the Antarctic coastline over the weekend, threatening valuable scientific equipment deployed by New Zealand's National Institute of Water and Atmospheric Research (NIWA). NIWA scientists have been monitoring satellite images of the...

April 11, 2016

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Scientists venture to Antarctica to uncover origin of modern vertebrates

An international team of researchers led by paleontologists from the Carnegie Museum of Natural History, the University of Texas at Austin, Ohio University and the American Museum of Natural History are set to travel to Antarctica in search for evidence that some...

February 02, 2016

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NASA study claims Antarctica gains ice, not contributing to sea level rise

A new study led by NASA's glaciologists Jay Zwally, says that an increase in Antarctic snow accumulation that began 10 000 years ago is currently adding enough ice to the continent to outweigh the increased losses from its thinning glaciers. The research...

November 02, 2015

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Discovered deep under Antarctic surface: Extensive, salty aquifer and potentially vast microbial habitat

Using a novel, helicopter-borne sensor to penetrate the surface of large swathes of terrain, a team of researchers supported by the National Science Foundation (NSF) has gathered compelling evidence that beneath Antarctica's ice-free McMurdo Dry Valleys lies a salty

April 30, 2015

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South Pole Ice Core project - digging 40 000 years into climate history of South Pole

South Pole Ice Core (SPICE) project is a joint effort by researchers from the University of Washington and the University of California, Irvine to 'dig' 40 000 years into climate history at the planet's southernmost tip. The ice core will be drilled to a dep

January 22, 2015

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Significant eruptions of Mount Erebus reported, Antarctica

One of the larger eruptions of Antarctica's Mount Erebus this year occurred at 09:12 UTC on December 4, 2014 and ejected bombs onto the summit cone of Erebus, Mount Erebus Volcano Observatory (MEVO) reports.Mount Erebus is one of several volcanoes in the McMurdo Vol

December 07, 2014

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Antarctic icequakes triggered by 2010 magnitude 8.8 Chile earthquake

Sections of Antarctica's frozen desert can experience hundreds of micro-quakes an hour due to ice deformation. These quakes are also called icequakes and they are a usual occurrence on Antarctica. However, after the 8.8-magnitude earthquake that hit C

August 12, 2014

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Coldest June since measurements began in Adélie Land, Antarctica

Meteo-France is reporting an unusually cold month of June at their station base Dumont d'Urville located in Adélie Land (Terre Adélie), Antarctica. They recorded an average temperature of -22.4° C throughout June, which is 6.6&d

July 14, 2014

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Distinct avian influenza viruses found in Antarctic penguins

An international team of researchers has, for the first time, identified an avian influenza virus in a group of Adélie penguins from Antarctica. The virus, found to be unlike any other circulating avian flu, is described in a study published this week in mBi

May 06, 2014

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Today’s Antarctic region once as hot as California, Florida

Parts of ancient Antarctica were as warm as today's California coast, and polar regions of the southern Pacific Ocean registered 21st-century Florida heat, according to scientists using a new way to measure past temperatures.The findings, published the week of A

April 22, 2014

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Volcanoes helped species survive ice ages

An international team of researchers has found evidence that the steam and heat from volcanoes and heated rocks allowed many species of plants and animals to survive past ice ages, helping scientists understand how species respond to climate change. The research

March 11, 2014

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Largest flood recorded beneath Antarctica mapped by CryoSat

ESA’s CryoSat satellite has found a vast crater in Antarctica’s icy surface for which scientists believe was left behind when a lake lying under about 3 km of ice suddenly drained. The study, published recently in Geophysical Research Letters,

July 02, 2013

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Bedmap2 - detailed view of Antarctica’s landmass

Scientists at the British Antarctic Survey (BAS) have released the most detailed map yet of Antarctica’s landmass that allows scientists to better analyse the bed below the Antarctic ice sheet. Bedmap2 reveals a landscape of mountain ranges and plains

March 21, 2013

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Antarctic ice sheet earthquakes shed light on ice movement and earthquakes

Penn State geoscientists made analysis of small, repeating earthquakes in an Antarctic ice sheet. They point that it may  lead to an understanding of glacial movement and also shed light on stick slip earthquakes like those on the San Andreas fault or in

August 31, 2012

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Melting glaciers alter Earth's gravity

Melting glaciers can alter Earth's gravity field, scientists have found, a discovery that is shedding light on when Greenland and Antarctica began heavily melting. Knowing the timing of this melting could help climate scientists make better estimates of the potential

August 17, 2011

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Study links ozone hole to climate change all the way to the equator

In a study to be published in the April 21st issue of Science magazine, researchers at Columbia University's School of Engineering and Applied Science report their findings that the ozone hole, which is located over the South Pole, has affected the entire circulation

April 27, 2011

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New deep-sea volcanic vents found in Antarctic’s Southern Ocean

British researchers say the discovery of deep-sea volcanic vents in the Antarctic’s Southern Ocean suggests they’re more common than previously thought. Deep-sea vents are hot springs on the seafloor, where mineral-rich water nourishes colonies of

February 15, 2011