11 小时之前 · Surface melting for the Antarctic ice sheet appears to have set a record for the 46-year satellite observation period on January 2, 2025. All areas of the Antarctic coast that generally see significant summertime melting continue to accumulate melt days at a faster-than-average pace, except along the northern West Antarctic ice shelves, which are now near-average.

11 小时之前 · An international team of Earth and environmental scientists has found evidence that the Ronne Ice Shelf in the West Antarctic did not melt during the last interglacial event, suggesting it could ...

2020年3月20日 · Recent observations made with several independent satellite measurements demonstrate that several regions of Antarctica are losing mass, flowing faster, and retreating where ice is exposed to warm ocean waters. The Antarctic contribution to sea level rise has reached ~8 millimeters since 1992.

2025年1月16日 · The Antarctic ice sheet is nearly twice the area of Australia and holds enough freshwater to raise global sea levels by 58 metres.

Data collected about the ice sheet structure and conditions at the ice-bedrock interface will be used to improve computer models of ice flow for Antarctica. In turn, this will improve estimates of ice sheet stability and forecasts of its reaction to climate change and impact on global sea level.

2020年1月24日 · Direct measurements of basal melt rate near Ross Island (Stewart et al., 2019) support the hypothesis that long-term melt rates at Site E are dominated by rapid melting during summers when Antarctic Surface Water (AASW) has been warmed locally by insolation after the sea ice near the ice front has disappeared (e.g., Assmann et al., 2003; Stern ...

2022年3月1日 · Antarctica is losing ice mass by basal melting associated with processes in deep Earth and reflected in geothermal heat flux. The latter is poorly known and existing models based on disputed assumptions are controversial.

2013年6月13日 · Basal melt of 1325 ± 235 gigatons per year (Gt/year) exceeds a calving flux of 1089 ± 139 Gt/year, making ice-shelf melting the largest ablation process in Antarctica. The giant cold-cavity Ross, Filchner, and Ronne ice shelves covering two-thirds of the total ice-shelf area account for only 15% of net melting.

2019年10月9日 · Thankfully, over three-quarters of the continent is girded by ice shelves, the floating extensions of glaciers that protect the land-bound ice behind them like walls surrounding a vast, icy...

2025年1月8日 · Widespread coastal melting occurred in Antarctica through the second half of December and is continuing in the first few days of the new year in several areas. Nearly every region with routine surface snowmelt has had more days of …