Iceberg twice the size of New York City is set to break away from Antarctica

An iceberg roughly twice the size of New York City is set to break away from an Antarctic ice shelf as a result of a rapidly spreading rift that is being monitored by Nasa.

The shear face of the massive B-15A iceberg in McMurdo
Sound after it broke off the Ross Ice Shelf in Antarctica. 

A crack along part of the Brunt ice shelf in Antarctica first appeared in October 2016, according to the National Aeronautics and Space Administration (Nasa). The crack is spreading to the east. 

This rift, known as a Halloween crack, is set to intersect with another fissure that was apparently stable for the past 35 years but is now accelerating north at a rate of around 2.5 miles a year.

Once these two rifts meet, which could happen within weeks, an iceberg of at least 660sq miles is set to be loosened.

Read the story from The Guardian by Oliver Milman - “Iceberg twice the size of New York City is set to break away from Antarctica.”

An iceberg the size of Delaware just broke off Antarctica

An iceberg the size of Delaware has broken free from an Antarctic ice shelf, leaving the rest of the shelf vulnerable to collapse and serving as a harbinger of future sea-level rise that could pose a serious threat to coastal communities.

Marlene Cimons writes in Think Progress about
a massive chunk of ice breaking free from
an Antarctic ice shelf.

The break in the Larsen C ice shelf — the most northern major ice shelf in the region occurred Wednesday, according to Project MIDAS, a UK-based monitoring group.

Ice shelves are the thick, floating ice at the edge of the continent, and they serve as buttresses, keeping onshore glaciers from sliding into the sea. Researchers have been monitoring the rift in the Larsen C shelf for years and became alarmed in December when the breach widened dramatically. At one point this spring, the rift grew by 11 miles in less than a week, leaving only eight miles left and raising fears that a complete break was imminent. More than six months later — in the middle of the Antarctic winter — the break has occurred.

Read the Think Progress story by Marlene Cimons - “An iceberg the size of Delaware just broke off Antarctica.”