After analyzing the satellite data, the US space agency NASA described how the rectangular iceberg detected in October this year was formed near Antarctica, whose shape is too perfect and surprisingly smooth, as if it had been cut with a band saw.
The unusual ice floe was photographed by Jeremy Harbeck, a specialist in a NASA research program.
At first it was assumed that the iceberg had been formed recently, however, as the satellite data show, in fact, it was last year.
According to the space agency, the iceberg separated from the Larsen ice shelf in November 2017, only a few months after the A-68, a much larger block of ice, also separated from the glacier. The iceberg, which was then about four kilometers long, moved north.
While navigating a narrow passage between the northern tip of the A-68 iceberg and a rocky area near the structure called Brawden Ice Rise, it probably took on such an unusual shape due to constant ice shocks, experts say.
Over time, the iceberg lost its rectangular shape and began to resemble, rather, a trapeze. According to NASA, apparently, the iceberg will continue to move to the north, where it will eventually melt.
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