Antarctica

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

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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.

Scientists analyzing ancient ice from Antarctica have found that ocean temperatures dropped by 2 to 2.5 degrees Celsius over the past 3 million years, while carbon dioxide and methane levels changed only modestly. The studies, led by researchers from Oregon State University and others, suggest factors beyond greenhouse gases drove much of Earth's long-term cooling. The findings come from ice cores at Allan Hills in East Antarctica.

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Scientists using deep-diving Argo floats have pinpointed the reason behind Antarctica's dramatic sea ice contraction starting in 2016. The decline stems from a violent release of pent-up heat from ocean depths, triggered by shifting winds and salinity changes. This discovery highlights the ocean's key role in sea ice variability.

An exclusive sneak peek for NCIS: Sydney's season 3 midseason premiere has been released. The preview depicts the task force traveling to Antarctica. They investigate a new murder there.

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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.

A city-sized Antarctic iceberg known as A23a has formed a vast pool of meltwater on its surface, raising concerns it may soon break apart. Satellite imagery reveals an unusual raised ice rim holding billions of litres of water, resembling an oversized swimming pool. Scientists suggest this pooling could accelerate the berg's fragmentation in warmer waters.

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China's polar icebreaker Xuelong, on its 42nd Antarctic scientific expedition, set sail for Lyttelton Port in New Zealand on Saturday after finishing tasks at Qinling Station. The vessel handled crew transfers, unloaded supplies, and conducted scientific activities there. It will resupply and rotate crew in New Zealand before continuing to the Amundsen Sea.

 

 

 

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