No ice build-up in East Antarctica, new study says
Despite some suggestions that increased has bolstered the vast East Antarctic ice sheet, it appears the frozen continent is still shedding ice and has been a net contributor to sea level rise since at least 2003.
There’s been little doubt during the last decade that the West Antarctic Ice Sheet has been losing mass, but the picture has been much less clear to the east, where there’s enough ice to raise global sea level by some 50 meters. One study led by NASA researchers in 2015 suggested that this part of Antarctica was gaining so much mass that it compensated for the losses in the west. Continue reading “Antarctica is melting all over”→
Researchers find vast chasm hidden beneath the ice of East Antarctica
Deep under the Antarctic ice sheet, there may be a chasm that’s as deep as the Grand Canyon, but many times longer, according to new geologic research led by scientists with Durham University.
The canyon system is made up of a chain of winding and linear features buried under several kilometres of ice in one of the last unexplored regions of the Earth’s land surface: Princess Elizabeth Land (PEL) in East Antarctica. Continue reading “The grandest of canyons?”→
Natural variability still the key driver for East Antarctica temps
FRISCO — A lack of widespread data from Antarctica means it’s still challenging to differentiate human-driven global warming from natural temperature variations in the region, German scientists said in a new study.
Climate researchers need to understand temperature trends in Antarctica to better predict how fast the ice will melt and raise global sea level. But the study concluded that the uncertainties in the temperature trends over Antarctica are larger than previously estimated. Continue reading “Antarctica meltdown likely to speed up soon”→
Seafloor channels sluicing warm ocean water toward base of East Antarctica’s Totten Glacier
FRISCO — Scientists say they’re a step closer to understanding the extreme thinning of East Antarctica’s largest glacier, which contains enough ice to raise global sea level by about 11 feet.
Ocean gateways are sluicing warm water toward the base of the Totten Glacier near the shoreline, undercutting the icy anchors that slow the advance of the ice toward the sea, according to researchers with the University of Texas at Austin’s Institute for Geophysics, who outline their findings in the March 16 edition of the journal Nature Geoscience.
FRISCO — It’s not just the West Antarctic ice sheets that are melting away as the surrounding ocean warms, Australian scientists reported after a six week voyage to the eastern side of the frozen continent.
Proposals for vast marine preserves fail for the fourth time
By Summit Voice
FRISCO — Russia and China have once again showed their unwillingness to participate in global efforts to protect the environment in Antarctica by blocking a plan to create new marine reserves off the shore of eastern Antarctica and in the Ross Sea.
Both countries are more interested in exploiting natural resources in the region than in establishing a collaborative framework for sustainable management of the fish and krill. Russia voted for the fourth time to block the proposal for new marine protected areas, while China opposed the plans for the first time. Continue reading “Russia, China block Antarctica conservation plans”→
International commission can’t reach agreement on proposals for new marine protected areas
By Summit Voice
FRISCO — Russia may talk about cooperation on global conservation issues, but when push comes to shove, the neo-imperialist nation didn’t walk the walk when it had the chance to support creation of new ocean sanctuaries around Antarctica.