You are browsing the archive for Greenland Archives - AGU Blogosphere.

2 February 2023

The 15 December 1952 Niiortuut landslide-tsunami in central West Greenland

A paper in Science of the Total Environment (Svennevig et al. 2023) describes the 15 December 1952 Niiortuut landslide in Greenland. It concludes that this was one of the earliest anthropogenic warming-induced landslides identified to date.


8 July 2021

Sullorsuaq, Greenland: a large landslide on 15 June 2021

On 15 June 2021 a large landslide occurred on the margin of the Sullorsuaq Strait in a remote are of western Greenland.


21 August 2020

Remembering glaciologist Konrad Steffen

“I remember Steffen as a striking figure — sandy gray hair, piercing blue eyes, his face weathered by snow, wind and sun — at the podium during press conferences at the fall meeting of the American Geophysical Union in San Francisco. There, Steffen spoke to reporters about Greenland’s impressive ice melt.”


9 April 2020

Greenland Ice Sheet meltwater can flow in winter, too

New findings published in Geophysical Research Letters underscore need for year-round investigations of Arctic hydrology.


1 August 2018

New study reveals details of icy Greenland’s heated geologic past

By mapping the heat escaping from below the Greenland Ice Sheet, scientists have sharpened our understanding of the dynamics that dominate and shape terrestrial planets. Tracking these geodynamics of planets helps scientists understand their evolution. But more immediately, the heat information feeds sea-level-change models on Earth by helping scientists predict the behavior of ice. This is particularly important for the surface of land that, in the case of Greenland, is buried below kilometers of ice and so is hard to get to.


15 March 2018

New study helps explain Greenland glaciers’ varied vulnerability to melting

Using data from NASA missions observing Earth, researchers at the University of California, Irvine have created new maps of the bed topography beneath a score of glaciers in southeast Greenland, thereby gaining a much better understanding of why some are undergoing rapid retreat and others are relatively stable.


17 January 2018

Glacial moulin formation triggered by rapid lake drainage

Scientists are uncovering the mystery of how, where and when important glacial features called moulins form on the Greenland Ice Sheet. Moulins, vertical conduits that penetrate through the half-mile-deep ice, efficiently funnel the majority of summer meltwater from the ice surface to the base of the ice sheet.


4 January 2018

The Karrat Fjord rock avalanche: a new paper examining the 3D geometry

In a paper just published in the journal Landslides, Gauthier et al. 2017 use a 3D reconstruction to estimate that the tsunamigenic June 2017 Karrat Fjord rock avalanche in Greenland had a volume of 58 million cubic metres.


15 December 2017

Coastal erosion threatens archaeological sites along Greenland’s fjords

Hundreds of archaeology sites lie along the shores of Greenland’s fjords and coasts, revealing the entirety of the country’s ancestral cultures from as many as four thousand years ago. Coastal erosion, however, may soon drop many of those ancestral links into the ocean.


6 November 2017

The Nuugaatsiaq landslide in Greenland: understanding the failure processes

The Nuugaatsiaq landslide in Greenland: understanding failure processes from the precursory seismic signals (review of a paper)


8 August 2017

Updates from the Karrat Fjord landslide in Greenland

Various analyses have now been posted about the the tsunamigenic the Karrat Fjord landslide in Greenland, which killed four people


7 July 2017

Greenland’s summer ocean bloom likely fueled by iron

Iron particles catching a ride on glacial meltwater washed out to sea by drifting currents is likely fueling a recently discovered summer algal bloom off the southern coast of Greenland, a new study finds. Microalgae, also known as phytoplankton, are plant-like, marine microorganisms that form the base of the food web in many parts of the ocean.


21 June 2017

Much more detail about the Greenland landslide and tsunami, including images and video

In the last 24 hours new images and video have emerged showing the Greenland landslide and the terrifying tsunami that it triggered.


20 June 2017

Nuugaatsiaq tsunami: details emerge of the landslide

Details and some video are now available about the landslide that triggered the Nuugaatsiaq tsunami in Greenland on Saturday night


19 June 2017

Nuugaatsiaq: A large landslide-induced tsunami on Saturday night?

Late on Saturday, a substantial tsunami struck the village of Nuugaatsiaq in Greenland. The most likely cause would appear to be a very large landslide


25 May 2017

Scientists discover new mode of ice loss in Greenland

A new study finds that during Greenland’s hottest summers on record, 2010 and 2012, the ice in Rink Glacier on the island’s west coast didn’t just melt faster than usual, it slid through the glacier’s interior in a gigantic wave, like a warmed freezer pop sliding out of its plastic casing. The wave persisted for four months, with ice from upstream continuing to move down to replace the missing mass for at least four more months.


26 April 2017

Sea level rising faster now than during 1990s, new study shows

Global mean sea level is rising 25 percent faster now than it did during the late 20th century largely due to increased melting of the Greenland Ice Sheet, a new study shows. Satellites first started measuring sea level rise in 1993. The new study revisits how well these measurements agree with independently observed changes in the various components contributing to sea level rise.


3 August 2016

Researchers make first map of thawed areas under Greenland Ice Sheet

NASA researchers have helped produce the first map showing what parts of the bottom of the massive Greenland Ice Sheet are thawed – key information in better predicting how the ice sheet will react to a warming climate. Knowing whether Greenland’s ice lies on wet, slippery ground or is anchored to dry, frozen bedrock is essential for predicting how this ice will flow in the future, but scientists have very few direct observations of the thermal conditions beneath the ice sheet.


23 May 2016

History of Greenland snowfall hidden in ancient leaf waxes

The history of Greenland’s snowfall is chronicled in an unlikely place: the remains of aquatic plants that died long ago, collecting at the bottom of lakes in horizontal layers that document the passing years. Using this ancient record, scientists are attempting to reconstruct how Arctic precipitation fluctuated over the past several millennia, potentially influencing the size of the Greenland Ice Sheet as the Earth warmed and cooled.


5 April 2016

Melt-driven streams on Greenland’s ice sheet shape landscapes faster than rivers on land

Erosion by summertime melt-driven streams on Greenland’s ice sheet shapes landscapes similarly to, but much faster, than do rivers on land, according to a new study. The approach used to study the drainage system of the ice sheet should serve to broaden the scientific understanding of melt rates and improve projections about ice sheet response to climate change, said Leif Karlstrom, a geologist at the University of Oregon in Eugene and lead author of the study.