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ICEBERG A68a

An enormous iceberg that is heading toward the island of South Georgia in thesouthern Atlantic Ocean has broken up into three large chunks. Scientists from NASAhave been tracking the berg - dubbed A68a - for several weeks. It actually calved fromthe Larsen C ice shelf in 2017 and has been floating northwards ever since. In recentweeks, a fast-moving stream of water known as the Southern Antarctic CircumpolarCurrent Front has put the chunks on a trajectory that means they could run aground offthe coast of South Georgia. Scientists say the three fragments are roughly 2,600 squarekilometres in size. The submerged part of one chunk is 106 metres at its thickest point.

The sheer bulk of the three iceberg chunks poses a serious threat to the wildlife ofSouth Georgia. There could be an environmental catastrophe waiting to happen. If thethree mini icebergs collide with the seabed, they could obstruct penguins and seals fromforaging for fish. They could also block the route between penguin colonies and theirfeeding grounds during the breeding season. Scientists worry the underside of thefragments could grind the seabed near South Georgia and disrupt delicate underwaterecosystems. This could be exacerbated by the introduction of a mass of fresh water to theecosystems as the stationary fragments melt over the summer months.

Available at: https://breakingnewsenglish.com/2012/201229-iceberg-a68a.htmlAccessed on January 5th 2021.