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Grounding Line

All articles tagged with #grounding line

science4 hours ago•29 min saved

Antarctica sheds London-sized ice mass in 30 years, study finds

A satellite-based study shows Antarctica has lost ice covering an area eight times the size of Greater London in 30 years, driven by grounding-line migration concentrated in Western Antarctica and select East Antarctic regions. While 77% of the coast shows no grounding-line change since 1996, major glaciers such as Pine Island, Smith, and Thwaites have retreated by tens of kilometres, contributing to sea-level rise and underscoring the uneven nature of ice loss amid warming oceans.

via Daily Mail|

#antarctica #grounding-line #ice-loss

science4 days ago•7 min saved

Antarctica's Hektoria Glacier Collapses in Record-Fast Retreat

Antarctica's Hektoria Glacier retreated about eight kilometers and nearly half of it broke away in just two months, after a flat seabed beneath the glacier let it lift and rupture from below; satellite and seismic data trace the rapid calving on an ice plain, a finding that suggests larger glaciers could collapse faster and accelerate sea-level rise.

via ScienceDaily|

#antarctica #glacier #grounding-line

environment1 year ago•0 min saved

"Thwaites Glacier Faces Accelerated Melting from Warm Water Intrusion"

The Thwaites Glacier is experiencing accelerated melting as warm water reaches miles inland past its grounding line, contributing to significant ice loss.

via Daily Kos|

#climate-change #environment #grounding-line

environment2 years ago•7 min saved

"Antarctica's Melting Ice Demands Urgent Attention"

Two new studies shed light on the mysterious realm beneath Antarctica's ice shelves. Using underwater robotics and ground-penetrating radar, scientists have discovered that the melting of the ice shelves is driven by warm ocean water eating away at their undersides. The melting and freezing of seawater within deep crevasses create currents that accelerate the melting process. Additionally, researchers have found that geothermal heat and friction from ice grinding against the ground create rivers of freshwater flowing from the interior of the ice sheets, enhancing melting at the grounding line. These findings highlight the urgent need to reduce carbon emissions to prevent further collapse of Antarctica's glaciers and mitigate the potential rise in sea levels.

via WIRED|

#antarctica #environment #glaciers

earth-science2 years ago•14 min saved

Alarming Speed of Antarctic Ice Sheet Retreat Revealed in New Studies

A new study has found that the Thwaites Glacier in Antarctica retreated hundreds of meters per day during the pre-satellite era, according to data collected from delicate seafloor landforms. The findings add to a growing body of research on the rapid retreat of Antarctic ice sheets, which has significant implications for global sea level rise. The study highlights the importance of understanding grounding line dynamics and seafloor landforms in predicting future ice-sheet behavior.

via Nature.com|

#antarctica #earth-science #glacial-dynamics