glaciers
February 28, 2024
80 mph speed record for glacier fracture helps reveal the physics of ice sheet collapse
New research documents the fastest-known large-scale breakage along an Antarctic ice shelf. In 2012, a 6.5-mile crack formed in about 5 and a half minutes, showing that ice shelves can effectively shatter, though the speed of breakage is reduced by seawater rushing in. These results can help improve ice-sheet models and projections for future sea level rise.
January 18, 2023
The importance of the atmosphere and ocean in determining the fate of Antarctica
New research finds that ice-sheet-wide collapse in West Antarctica isn’t necessarily inevitable. The pace of ice loss varies according to regional differences in atmosphere and ocean circulation.
August 5, 2022
New study calculates retreat of glacier edges in Alaska’s Kenai Fjords National Park
As glaciers worldwide retreat due to climate change, managers of national parks need to know what’s on the horizon to prepare for the future. A new study from the University of Washington and the National Park Service measures 38 years of change for glaciers in Kenai Fjords National Park south of Anchorage. The study, published Aug. 5 in The Journal of Glaciology, finds that 13 of the 19 glaciers show substantial retreat, four are relatively stable, and two have advanced. It also finds trends in which glacier types are disappearing fastest.
January 26, 2022
Glaciers are squishy, holding slightly more ice than thought
Though usually though of as a solid, glaciers are also slightly compressible, or squishy. This compression over the huge expanse of an ice sheet — like Antarctica or Greenland — makes the overall ice sheet more dense and lowers the surface by tens of feet compared to what would otherwise be expected.
September 14, 2021
UW part of $25M NSF-funded effort to retrieve Earth’s oldest ice core
University of Washington glaciologists will join colleagues from around the country in a new effort to retrieve an ice core more than 1 million years old from East Antarctica, to better understand the history of our planet’s climate and predict future changes.
June 10, 2021
Cause, scope determined for deadly winter debris flow in Uttarakhand, India
On Feb. 7, 2021, a wall of debris and water barreled down river valleys in India, destroyed two hydropower facilities and left more than 200 people dead or missing. A self-organized coalition of 53 scientists from 14 countries, including researchers from the University of Washington, worked nonstop following the disaster to investigate the cause, scope and impacts.
February 4, 2021
Global warming found to be culprit for flood risk in Peruvian Andes, other glacial lakes
Human-caused warming is responsible for increasing the risk of a glacial outburst flood from Peru’s Lake Palcacocha, threatening the city below. This study is the first to directly link climate change with the risk of flooding from glacial lakes, which are growing in number and size worldwide.
December 8, 2020
NSF-funded deep ice core to be drilled at Hercules Dome, Antarctica
Antarctica’s next deep ice core, a 1.5-mile core reaching back to 130,000-year-old ice, will be carried out by a multi-institutional U.S. team led by UW’s Eric Steig. The site hundreds of miles from today’s coastline could provide clues to the most recent collapse of the West Antarctic Ice Sheet.
April 30, 2020
First results from NASA’s ICESat-2 map 16 years of melting ice sheets
Loss of ice from Antarctic and Greenland ice sheets since 2003 have contributed 0.55 inches to global sea level rise, with about two thirds coming from Greenland ice. The new, detailed satellite measurements provide a global picture of ice sheet change — and insights into the future of Greenland and Antarctica.
January 23, 2019
One year into the mission, autonomous ocean robots set a record in survey of Antarctic ice shelf
A team of ocean robots developed at the UW is the first group of self-guided ocean instruments to travel under an ice sheet and come back to report long-term observations.
September 6, 2018
Volcano under ice sheet suggests thickening of West Antarctic ice is short-term
Evidence left by a volcano under the ice sheet suggests that the observed bulging of ice in West Antarctica is a short-term feature that may not affect the glacier’s motion over the long term.
March 6, 2018
Glaciers in Mongolia’s Gobi Desert actually shrank during the last ice age
High in Mongolia’s Gobi Desert, the climate is so dry and cold that glaciers shrank during the last ice age. Dating of rock deposits shows how glaciers in this less-studied region can behave very differently as the climate shifts.
October 20, 2017
Mountain glaciers shrinking across the West
A satellite technique provides a new way to monitor the status of more than 1,200 mountain glaciers in the lower 48 states.
April 17, 2017
Retreating Yukon glacier caused a river to disappear
A new study provides a postmortem on the Yukon’s Slims River, whose flow was diverted in early 2016. It is the only documented case of “river piracy” in modern times.
February 8, 2017
Hidden lakes drain below West Antarctica’s Thwaites Glacier
Drainage of four interconnected lakes below Thwaites Glacier in late 2013 caused only a 10 percent increase in the glacier’s speed. The glacier’s recent speedup is therefore not due to changes in meltwater flow along its underside.
December 12, 2016
Mountain glaciers are showing some of the strongest responses to climate change
A University of Washington study addresses controversies over the cause of mountain glacier retreat, and finds that for most glaciers the observed retreat is more than 99 percent likely due to climate change.
March 9, 2016
Darkening of Greenland ice sheet due mainly to older, melting snow
A study by the UW and others finds that the darkening of the Greenland ice sheet is not due to an increase in wildfires, but is a side effect of a warming climate.
February 19, 2016
UW part of team that drilled first deep ice core at the South Pole
UW glaciologists helped drill the first deep ice core at the South Pole, which will provide new clues to Antarctica’s climate history.
April 29, 2015
Antarctic ice core shows northern trigger for ice age climate shifts
UW glaciologists were part of a team that used a new Antarctic ice core to discover which region triggered sudden global-scale climate shifts during the last ice age.
May 12, 2014
West Antarctic Ice Sheet collapse is under way
The collapse of the West Antarctic Ice Sheet has begun, according to computer models using detailed topographic maps. The fast-moving Thwaites Glacier will likely disappear in a matter of centuries, researchers say, raising sea level by nearly 2 feet.
February 3, 2014
Greenland’s fastest glacier sets new speed record
Observations of Jakobshavn Glacier from 2012 and 2013 show the fast-moving glacier has set new records for the speed of ice flowing toward the ocean.
January 2, 2014
El Niño tied to melting of Antarctica’s Pine Island Glacier
A new study in Science, co-authored by the British Antarctic Survey and UW authors, shows that melting of the floating Pine Island ice shelf is tied to global atmospheric patterns associated with El Niño.
May 3, 2012
Increasing speed of Greenland glaciers gives new insight for rising sea level
Changes in the speed that ice travels in more than 200 outlet glaciers indicates that Greenland’s contribution to rising sea level in the 21st century might be significantly less than the upper limits some scientists thought possible, a new study shows.
April 17, 2008
While stability far from assured, Greenland perhaps not headed down too slippery a slope
In a pair of companion papers in Science Express this week, scientists investigate the role of surface meltwater on accelerating the flow of the Greenland Ice Sheet and outlet glaciers and conclude that, while surface melt plays a substantial role in ice sheet dynamics, it may not produce large instabilities.
February 13, 2007
Glaciers not on simple, upward trend of melting
Two of Greenland’s largest glaciers shrank dramatically and dumped twice as much ice into the sea during a period of less than a year between 2004 and 2005.
March 23, 2006
Greenland’s glaciers pick up pace in surge toward the sea
With warming temperatures as the possible underlying cause, scientists wonder what is pushing Greenland’s glaciers out to sea as much as 50 percent quicker than before.
December 2, 2004
World’s fastest glacier doubles speed
The world’s fastest glacier, Greenland’s Jakobshavn Isbrae, doubled its speed between 1997 and 2003.
