Antarctica: Close-up view of crack that made mega-iceberg
Very high resolution imagery has been released of the crack that resulted in the calving of Antarctica's latest mega-iceberg. A74, as the 1,290-sq-km (500-sq-mile) block is known, broke away from the Brunt Ice Shelf exactly a week ago.
The new pictures from last Saturday show the widening "North Rift" a day after calving. They were acquired by the UK satellite Vision-1 for the British Antarctic Survey.
BAS has its Halley Research Station on the Brunt, positioned about 23km from the rift. Also in the hands of BAS is new radar imagery captured on Thursday by the EU's Sentinel-1 spacecraft. This gives a wider view of the 150m-thick A74 pushing out into Antarctica's Weddell Sea.
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Atlantis Viewpoint
In the early hours of Friday 26th February 2021, the newer crack widened rapidly before finally breaking free from the rest of the floating ice shelf. Over the coming weeks and months, the iceberg could be entrained in the swift south-westerly flowing coastal current, it could also run aground or even cause further damage by bumping back into the southern Brunt Ice Shelf. The new iceberg is called A74.
It is not only a shame we see this happening, but also a major concern. This is yet another example that climate change should be taken more seriously by all states, regions and countries around the world. We know GHG (Greenhouse Gases) are responsible of global warming, and we know burning fossil fuels are the biggest source of those. This is an emergency, and it is time to start taking advantage of the existing alternatives of energy production that we have. True clean sources of energy such as wind, solar, geothermal and tidal can generate endless amounts of energy without destroying the world that we live in.