There are two primary causes of global mean sea level rise — added water from melting ice sheets and glaciers, and the expansion of sea water as it warms. The melting of Antarctica’s ice sheet is currently responsible for 20-25% of global sea level rise. But how much of a role will it play hundreds of […]
SEATTLE — The 150-member crew of the U.S. Coast Guard Cutter Polar Star returned earlier this month to their homeport of Seattle following a 105-day deployment to Antarctica in support of Operation Deep Freeze. Operation Deep Freeze is an annual joint military service mission in support of the National Science Foundation, the lead agency […]
[dropcap]A[/dropcap]cting on the advice of medical experts, National Science Foundation (NSF) officials have directed the NSF-chartered research vessel Nathaniel B. Palmer to put ashore a person in need of a level of care not available aboard the ship. The Palmer, which is at sea in Antarctic waters, will divert to the British Antarctic Survey’s Rothera Station. After arriving […]
A gigantic cavity — two-thirds the area of Manhattan and almost 1,000 feet (300 meters) tall — growing at the bottom of Thwaites Glacier in West Antarctica is one of several disturbing discoveries reported in a new NASA-led study of the disintegrating glacier. The findings highlight the need for detailed observations of Antarctic glaciers’ undersides […]