Antarctic Headlines 12/04/2019

Study reveals climate change impact on Antarctic penguins
Phys.org, 2019-12-04
Antarctic penguins have been on the forefront of climate change, experiencing massive changes to their natural habitat as the world’s temperatures and human activity in the region have increased. Now, new research has revealed how penguins have dealt with more than a century of human impacts in Antarctica and why some species are winners or …

Seawater softening of suture zones inhibits fracture propagation in Antarctic ice shelves
Nature, 2019-12-02
Suture zones are abundant on Antarctic ice shelves and widely observed to impede fracture propagation, greatly enhancing ice-shelf stability. Using seismic and radar observations on the Larsen C Ice Shelf of the Antarctic Peninsula, we confirm that such zones are highly heterogeneous, consisting of multiple meteoric and marine ice bodies of …

Antarctic ice sheets could be at greater risk of melting than previously thought
Phys.org, 2019-12-02
Heat from the landmass beneath the Antarctic ice sheet is a major contributor to the way that glaciers melt and flow—and their impact on potential sea level rise. Hotter conditions allow meltwater to lubricate the base of the glacier, accelerating its movement and the rate of ice loss. However, because of the environmental, logistical and …

Climate change: Study underpins key idea in Antarctic ice loss
BBC, 2019-12-02
“It’s fantastic to see how useful satellite data and models can be when used together,” he told BBC News. “Although most of the ice dynamical imbalance in West Antarctica and at the Antarctic Peninsula is clearly linked to ice shelf melting, there is not much evidence of the same in East Antarctica – which suggests Totten Glacier, for example …

First Evidence of Key Antarctic Ice Loss Driver Uncovered
Newsweek, 2019-12-02
The Antarctic Ice Sheet (AIS)—the largest single mass of ice on Earth, covering about 98 percent of the southern continent—is currently losing mass. And the rate at which this mass loss is contributing to sea-level rise is increasing. The AIS is encircled by floating, sea-based ice shelves that surround the continent and help hold the land …

We Need to Protect Antarctic ‘Blue Carbon’
Wired, 2019-12-04
This locks carbon out of the atmosphere for millennia or longer, resulting in long-term sequestration of atmospheric carbon dioxide. Unfortunately, international governance of the area south of the Antarctic convergence creates a wicked legal problem. It’s the result of the complex history, regime dynamics, and jurisdictional framework of the …

Forty Years On, New Zealand Apologizes for Antarctic Plane Disaster
U.S. News & World Report, 2019-11-28
Forty Years On, New Zealand Apologizes for Antarctic Plane Disaster FILE PHOTO: New Zealand’s Prime Minister Ms. Jacinda Ardern speaks during the 2019 United Nations Climate Action Summit at U.N. headquarters in New York City, New York, U.S., September 23, 2019. REUTERS/Lucas Jackson Reuters WELLINGTON (Reuters) – New Zealand Prime Minister …

Australian icebreaker will resupply French Antarctic bases
Nature, 2019-11-26
Australia will transport researchers and vital supplies to France’s Antarctic research stations next month. The stations were in danger of being left without means of obtaining some supplies this summer, after the French navy discovered a critical defect …

Conservation dog stranded on sub-Antarctic island heads home after reunion with owner
Radio New Zealand on MSN.com, 2019-12-04
In a happy ending straight out of homeward bound, Flint, a conservation dog who spent 36 hours alone, muzzled and stranded on a sub-Antarctic island, has been reunited with his owner. The small jack russell fox terrier cross was preparing to leave Campbell Island a week ago when he was spooked by some sea lions and bolted. What followed was a …

60th Anniversary of the Antarctic Treaty
Maritime Executive, 2019-12-01
The Antarctic Treaty, signed in Washington on December 1, 1959, enshrines Antarctica as a place of peace, science and international cooperation. During the first half of the 20th century, a series of territorial claims were made to parts of Antarctica creating political tension. These tensions were eased by the International Geophysical Year …