The IceBridge NASA project captures this view of a strange rectangular iceberg in Antarctica in October 2018.
Credit: NASA IceBridge
Earlier this month, NASA published a strange and alluring photo about a truly strange iceberg. And NASA scientist Kelly Brunt speculated in Live Science that the mountain was likely still fresh, its sharp corners due to the results of recent clamps from an ice shelf and not yet been hit by many of these elements.
Since then, however, NASA has returned and sees more evidence. And it turns out that Squareberg has a more violent birth than originally believed. Satellite images show that it was split from the Larsen C ice sheet at the North Pole behind a much larger and curved iceberg called the A-68 and made its way north into clogged and cold water.
Squareberg is a tabular iceberg, basically a flat ice that breaks the ice sheet, not one of the more geometric, smaller ones that sink the Titanic.
"The berg runs all the way to the north and through a narrow section between the northern end of the A-68 and rock outcrops near the ice shelf known as Bawden Ice Rise," NASA said in a statement. "NASA / UMBC glaciologist Chris Shuman likens this zone to nut breaking. The A-68 has repeatedly broken up and caused fragments of ice to split into clean geometric shapes," NASA added, referring to Shuman, who is also at the University of Maryland Baltimore County .
You can see berg passing through dangerous waters in this photo:
Over time, it loses a nice square shape, taking more of the trapezoidal formation. NASA said it would likely continue to make its way north, where it would melt.
Initially published on Direct Science.