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Giant Iceberg Breaks Off Antarctic Brunt Ice Shelf -Watch This Amazing Video From Space
Space.com
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yesterday
A 1550 square km (963 sq mi.) iceberg, designated A81 broke off Antarctica’s Brunt Ice Shelf.
A time-lapse of the 'calving process' was captured by satellites.
Credit; ESA - European Space Agency
Category
🤖
Tech
Transcript
Display full video transcript
00:00
You
00:30
An enormous iceberg has carved from Antarctica's brunt ice shelf.
00:54
After several years of desperately clinging on, the berg broke away, as confirmed by satellite
00:59
data.
01:02
Scientists estimate the Newberg to be around 1,550 square kilometres.
01:08
That's the size of Greater London, or five times the size of Malta.
01:14
The brunt ice shelf borders the Coatesland coast in the Weddell Sea sector of Antarctica.
01:21
Glaciologists have monitored the thick brunt ice shelf for years.
01:28
The Newberg carved when the crack known as Chasm 1 split northwards, severing the west
01:33
part of the ice shelf.
01:37
It was only a matter of time before it would meet the Halloween crack.
01:41
First spotted on, you guessed it, Halloween.
01:43
After several years on watch for brunt iceberg carving, we finally witnessed the long-awaited
01:50
separation of the western brunt ice shelf as iceberg A81.
01:57
Routine monitoring from satellites offers unparalleled views of events happening in remote regions.
02:04
The Copernicus Sentinel-1 mission carries radar, which returns images regardless of day or night.
02:10
This allows us year-round viewing, which is especially important through the long dark winter months.
02:21
The British Antarctic Survey's Halley 6 research station, where glaciologists have been monitoring
02:27
the behaviour of the ice shelf, was relocated in 2017 to a more secure location after the
02:34
ice shelf was deemed unsafe.
02:37
The station has remained unaffected by the carving event.
02:41
There are currently 21 staff working at the station to keep scientific operations running
02:47
through winter.
02:49
It is now around 20 kilometres from the line of rupture.
02:56
Thanks to the Copernicus Sentinel satellites, together with in-situ and airborne measurements
03:00
made by the British Antarctic Survey, the safety of the Halley base has been preserved.
03:07
In February 2021, a giant berg broke off from the northern section of brunt.
03:16
Spotted by Sentinel-1, it has already drifted away from the brunt ice shelf into the Weddell
03:21
Sea.
03:23
So what happens now?
03:25
The carving of icebergs can speed up the flow of ice from an ice shelf.
03:29
If brunt now experiences an acceleration, it could influence the behaviour of other cracks
03:34
in the area.
03:37
The carving and separation of the latest iceberg, A81, now focuses attention back onto the Halloween
03:43
crack, whose extension could contribute to further destabilisation of the remaining eastern
03:49
portion of the brunt ice shelf.
03:51
We will continue using the Copernicus Sentinel satellites to closely monitor the behaviour and
03:56
stability of the remaining brunt ice shelf.
04:11
the rest of the tower in the surrounding area.
04:16
Now, if you see the big talk, please hold for the mall in the middle of the other area.
04:26
Thedel Semi is the closest to the lovely mountain beam of the ice shelf.
04:29
Theどんなdevelopment of the roof is the largest mountain beam of the entire earth.
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