Greenland ice sheet melting 7% faster than believed, says new GPS study
22 September 2016
A new study based on GPS measurements of the Earth's crust suggests the Greenland ice sheet is melting about seven per cent faster than previously believed and may contribute more to future sea level rise than predicted.
"We've underestimated the rate of ice loss by about 7.6 per cent," said Michael Bevis of The Ohio State University, one of the study's co-authors.
Greenland's huge annual ice loss is even worse than thought
21 September 2016
The huge annual losses of ice from the Greenland cap are even worse than thought, according to new research which also shows that the melt is not a short-term blip but a long-term trend.
Sub-Glacial Lakes in Greenland are Draining
29 January 2015
POLENET principal investigator Mike Bevis talks with CBC Radio about the discovery that sub-glacial lakes in Greenland are draining, impacting the stability of the ice sheet and sea level.
Ice loss pushing Antarctica side-wards half an inch per year, according to GPS recordings
13 December 2013
Heavy ice loss in West Antarctica has weakened it mantle underneath, allowing the stronger East Antarctica mantle to push it around, according to Ohio State University researchers. The discovery was made after recording GPS measurements, which clearly showed that the West Antarctic bedrock is being pushed at an alarming rate of half an inch per year.
East Antarctica is sliding sideways: Ice loss on West Antarctica affecting mantle flow below
11 December 2013
It's official: East Antarctica is pushing West Antarctica around. Now that West Antarctica is losing weight—that is, billions of tons of ice per year—its softer mantle rock is being nudged westward by the harder mantle beneath East Antarctica.
Active Volcano Discovered Under Ice Sheet in West Antarctica
18 November 2013
U.S. seismologists have made a surprising discovery near Mount Sidley in Marie Byrd Land, Antarctica – an active volcano smoldering under 1.2 km thick ice.
Volcano under Antarctic ice may erupt, accelerate melting
17 November 2013
A newly discovered volcano rumbling beneath nearly a mile of ice in Antarctica will almost certainly erupt at some point in the future, according to a new study. Such an event could accelerate the flow of ice into the sea and push up the already rising global sea levels.
The Battle for the North Pole: Melting Ice Brings Competition for Resources
19 September 2008
Climate change is freeing the Arctic of ice -- and spurring a global competition for the natural resources stored beneath. Countries that border the sea are staking new territorial claims and oil giants are dispatching geologists. But what will the tug-of-war mean for the indigenous people and wildlife?
Researchers brave Antarctica's wind, chill, to track climate change at the bottom of the world
The Columbus Dispatch
12 January 2008
Antarctica is home to some of the coldest, windiest places on Earth. When the sun disappears in the winter, temperatures dip to 76 below zero and the breezes blow in at 115 mph. Scientists and their equipment simply can't survive there.
Plane crash won't keep OSU scientist off the ice
The Columbus Dispatch
12 January 2008
On Dec. 20, a National Science Foundation-chartered plane in Antarctica crashed during takeoff from a field site near Mount Patterson in West Antarctica. None of the 10 people (a crew of four crew and six passengers) aboard was severely injured, but the DC-3 Basler did sustain heavy damage. OSU research associate Eric Kendrick was aboard with five other Polar Earth Observing Network researchers.
Scientists explore ice caps
15 January 2008
Like most scientists heading up large projects, earth sciences professor, Terry Wilson has her share of problems: looking after her scientists, writing grant proposals, making sure research is done on time. Unlike most researchers, she has to concern herself with the physical survival of her team, which is racing against months of unrelenting darkness to install sites that will monitor the West Antarctic Ice Sheet in a study that could prove integral to the understanding of the melting ice caps. So far the team has coped with everything from freezing temperatures to heavy gear and time constraints.
As Ice Melts, Antarctic Bedrock is On the Move
COLUMBUS, Ohio -- As ice melts away from Antarctica, parts of the continental bedrock are rising in response -- and other parts are sinking, scientists have discovered. The finding will give much needed perspective to satellite instruments that measure ice loss on the continent, and help improve estimates of future sea level rise. These results are being derived from the building of POLENET, a growing network of Global positioning system (GPS) trackers and seismic sensors implanted in the bedrock beneath the West Antarctic Ice Sheet (WAIS), reoccupying sites previously measured by the West Antarctic GPS Network (WAGN) and the Transantarctic Mountains Deformation (TAMDEF) network.
As Alaska Glaciers Melt, It's Land That's Rising
16 May 2009
JUNEAU, Alaska - Global warming conjures images of rising seas that threaten coastal areas. But in Juneau, as almost nowhere else in the world, climate change is having the opposite effect: As the glaciers here melt, the land is rising, causing the sea to retreat...
POLENET featured on radio program 'Earth and Sky'
9 March 2009
Listen to POLENET's lead scientist on this weeks radio short program 'Earth and Sky'. Earth and Sky is heard 14 million times a day.
ICE STORIES: Pulse of the Poles
The vast ice fields of Antarctica and Greenland cloak many mysteries of how the underlying bedrock has responded to the growth and retreat of crushing ice sheets. Up to now, scientists have gleaned slivers of insight by collecting seasonal data from exposed mountain ranges and isolated rocky outcroppings, called nunataks. During the International Polar Year, scientists and engineers from 28 countries are instrumenting the length and breadth of Antarctica and Greenland to form a network of sensors, called POLENET (Polar Earth Observing Network) that will continuously monitor the earth beneath the ice.