Plataforma de gelo da geleira Thwaites está prestes a se desprender na Antártida

A geleira Thwaites, na Antártida, está perdendo sua plataforma de gelo oriental à medida que grandes fraturas se espalham pela estrutura flutuante. O fenômeno ameaça acelerar o fluxo da geleira e contribuir para a elevação do nível do mar nas próximas décadas.

A Plataforma de Gelo Oriental de Thwaites cobre cerca de 1500 quilômetros quadrados e tem 350 metros de espessura. Observações via satélite mostram que a plataforma está fraturando rapidamente ao redor de seu ponto de ancoragem e ao longo da linha de aterramento, onde a geleira encontra o mar. As velocidades de fluxo triplicaram desde janeiro de 2020 e atingiram pouco mais de 2000 metros por ano em janeiro de 2026, com uma aceleração adicional registrada nos meses seguintes.

Artigos relacionados

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

Pink rocks reveal hidden granite mass under Antarctic glacier

Reportado por IA Imagem gerada por IA

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.

Antarctica's Hektoria Glacier lost 15 miles of length in just 15 months, marking the fastest retreat of grounded ice observed in modern times. The collapse unfolded between early 2022 and spring 2023 on the eastern Antarctic Peninsula.

Reportado por IA

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.

Gases from hot springs in central Zambia show signs of mantle fluids rising to the surface, suggesting an early-stage continental rift. Researchers say this could mark the start of a new tectonic plate boundary. The findings come from samples collected in the Kafue Rift.

Reportado por IA

A major Atlantic Ocean current system that regulates global climate has been slowing down for nearly 20 years. New research provides direct evidence of the decline across a wide area of the North Atlantic.

New data from the European Space Agency's Swarm satellites reveal that the South Atlantic Anomaly, a weak spot in Earth's magnetic field, has grown by nearly half the size of continental Europe since 2014. A region southwest of Africa is weakening even faster in recent years. This expansion highlights unusual activity in Earth's molten outer core.

Reportado por IA

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.

quinta-feira, 14 de maio de 2026, 07:37h

Greenland ice melt may release vast methane stores

domingo, 10 de maio de 2026, 20:20h

Study finds hidden channels speed Antarctic ice melt

sábado, 09 de maio de 2026, 07:14h

Argentina enacts glacier law changes to allow mining near ice reserves

quinta-feira, 30 de abril de 2026, 22:10h

Scientists observe Juan de Fuca plate tearing in Cascadia subduction zone

sábado, 18 de abril de 2026, 03:07h

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

sexta-feira, 17 de abril de 2026, 15:48h

Scientists identify 3,100 surging glaciers posing flood risks

segunda-feira, 13 de abril de 2026, 19:12h

AMOC collapse could release 640 billion tonnes of CO2

terça-feira, 07 de abril de 2026, 03:17h

New study reveals origins of Antarctic Circumpolar Current

segunda-feira, 23 de março de 2026, 13:50h

Warmer ocean drives Antarctic sea ice regime shift

segunda-feira, 23 de fevereiro de 2026, 02:39h

Mantle plume shaped massive Atlantic underwater canyon

 

 

 

Este site usa cookies

Usamos cookies para análise para melhorar nosso site. Leia nossa política de privacidade para mais informações.
Recusar