南极

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.

April 18, 2026 由 AI 报道

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.

February 26, 2026 由 AI 报道

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.

January 04, 2026 由 AI 报道

中国极地冰breaker雪龙号在完成第42次南极科考任务后，于周六从秦岭站启航，驶往新西兰的利特尔顿港。该船在站上完成了人员轮换、物资卸载和科学观测等工作，并将在新西兰进行补给和人员换乘。