Hektoriaglaciären sätter modernt rekord för snabb reträtt

19 maj 2026

Rapporterad av AI

Antarktis Hektoriaglaciär förlorade 15 miles i längd på bara 15 månader, vilket markerar den snabbaste reträtten av grundad is som observerats i modern tid. Kollapsen utspelade sig mellan början av 2022 och våren 2023 på den östra Antarktiska halvön.

Glaciärens snabba reträtt inleddes efter att Larsen B-shelfisen kollapsade 2002 och tog bort en stabiliserande barriär. I januari 2022 bröts den fasta havsisen i viken upp, vilket gjorde att den flytande istungan kunde kalva upprepade gånger under den australa sommaren och dra sig tillbaka cirka 16 kilometer. Glaciären stabiliserades kortvarigt under vintern 2022 men fortsatte att tunnas ut under ytan.

Relaterade artiklar

Pink granite boulders in Antarctica's Hudson Mountains revealing a massive hidden granite body under Pine Island Glacier, with scientific survey overlay.

Pink rocks reveal hidden granite mass under Antarctic glacier

18 mars 2026 Rapporterad av AI Bild genererad av AI

Bright pink granite boulders on Antarctica's Hudson Mountains have unveiled a massive buried granite body beneath Pine Island Glacier. The structure measures nearly 100 km wide and 7 km thick. Researchers linked the rocks, dated to 175 million years ago, to this subglacial feature using gravity surveys.

Hektoria Glacier collapses rapidly in Antarctica

In 2023, Hektoria Glacier on Antarctica's Eastern Peninsula retreated eight kilometers in just two months, marking the fastest such event recorded. Nearly half of the glacier broke apart due to its position over a flat underwater bedrock. The discovery, detailed in a new study, highlights vulnerabilities in other Antarctic ice features.

Thwaites glacier ice shelf nears detachment in Antarctica

18 maj 2026 Rapporterad av AI

Antarctica’s Thwaites glacier is losing its eastern ice shelf as large fractures spread across the floating structure. The development threatens to speed up the glacier’s flow and add to global sea levels over coming decades.

Europa

Scientists race to study vanishing Weißseespitze glacier

Miljö

Scientists uncover origins of Antarctica's gravity anomaly

Vetenskap

Ancient Antarctic ice reveals modest greenhouse gas changes over 3 million years

New study reveals origins of Antarctic Circumpolar Current

Scientists have determined that Earth's most powerful ocean current, the Antarctic Circumpolar Current, formed through shifting continents and strong winds rather than solely from opening ocean gateways. This development around 34 million years ago helped draw down atmospheric carbon dioxide, contributing to a global cooling that led to the Antarctic Ice Sheet. The findings come from climate simulations published in the Proceedings of the National Academy of Sciences.

Massive landslide triggers record tsunami in alaska fjord

6 maj 2026 Rapporterad av AI

A huge landslide in Alaska's Tracy Arm fjord on 10 August 2025 generated the second-largest tsunami ever recorded, with waves reaching 481 metres high. The event displaced 64 million cubic metres of rock and created a 5.4 magnitude seismic signal.

Antarctic ice reveals earth passing through supernova debris

Scientists have detected traces of iron-60 in Antarctic ice up to 80,000 years old, showing that the solar system is moving through material from an ancient stellar explosion. The findings come from a study published in Physical Review Letters and point to the Local Interstellar Cloud as the source of the radioactive isotope.

Study finds global warming rate has doubled since mid-2010s

6 mars 2026 Rapporterad av AI

A new analysis in Geophysical Research Letters shows Earth warming at ~0.36°C per decade since 2014—about double the prior rate of 0.18°C per decade—with 98% confidence after accounting for natural factors. Led by Stefan Rahmstorf, the study warns the Paris Agreement's 1.5°C limit could be breached by 2028, amid debates over short-term trends and data uncertainties.

14 maj 2026 07:37

Hektoriaglaciären sätter modernt rekord för snabb reträtt

Relaterade artiklar

Pink rocks reveal hidden granite mass under Antarctic glacier

Hektoria Glacier collapses rapidly in Antarctica

Thwaites glacier ice shelf nears detachment in Antarctica

Scientists race to study vanishing Weißseespitze glacier

Scientists uncover origins of Antarctica's gravity anomaly

Ancient Antarctic ice reveals modest greenhouse gas changes over 3 million years

New study reveals origins of Antarctic Circumpolar Current

Massive landslide triggers record tsunami in alaska fjord

Antarctic ice reveals earth passing through supernova debris

Study finds global warming rate has doubled since mid-2010s

Greenland ice melt may release vast methane stores

Volcanic plume unexpectedly destroyed methane after 2022 eruption

Atlantic ocean current weakening over two decades, study shows

Study finds hidden channels speed Antarctic ice melt

Argentina enacts glacier law changes to allow mining near ice reserves

Diving robots uncover cause of Antarctica's sudden sea ice decline

Scientists identify 3,100 surging glaciers posing flood risks

Warmer ocean drives Antarctic sea ice regime shift

South African scientists outperform global leaders in Antarctic research

Scientists warn US actions accelerate Pacific coral reef collapse

Denna webbplats använder cookies