Tag Archives: Antarctica

US Coast Guard Makes Progress on Funding Icebreaker Fleet

The U.S. Coast Guard (USCG) has released a request for proposal (RFP) with matching funding to acquire a new heavy icebreaker vessel intended to be the first of a six-ship installment and the beginning of a robust U.S. icebreaker fleet. Announcing the proposal at the Mar. 1, 2018 State of the Coast Guard address, Commandant Admiral Paul Zukunft said it

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Despite Flooding, Engine Failure U.S. Icebreaker Completes Antarctic Mission

The crew of U.S. Coast Guard Cutter Polar Star completed their mission Tuesday, Feb. 6 in support of the National Science Foundation (NSF) after cutting a resupply channel through 15 miles of Antarctic ice in the Ross Sea and escorting supply vessels to the continent. The Polar Star sailed from Seattle to assist in the annual delivery of operating supplies and fuel for

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Antarctica’s Dotson Ice Shelf is Melting from Below

The European Space Agency’s CryoSat satellite and its Copernicus Sentinel-1 missions have been used to measure subtle changes in the elevation and flow of ice shelves that, in turn, reveal how huge canyons are forming underneath. Warm bottom ocean water is entering the cavity under Antarctica’s Dotson ice shelf and is stirred by Earth’s rotation. This is causing one side

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1 Trillion-Tonne Iceberg Breaks Away

A 1 trillion-tonne iceberg–one of the biggest ever recorded–calved away from the Larsen C Ice Shelf in Antarctica earlier this month. Its volume is twice that of Lake Erie. It was already floating before it calved away, so it has no immediate impact on sea level. Although the remaining ice shelf will continue to regrow naturally, Swansea researchers have previously shown that the new

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