Giant iceberg as seen from weather satellite
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@idefix37
@Yves70
I found this site (U.S. National Ice Center)
https://usicecenter.gov/Products/AntarcIcebergs
but i don't see "operational" data. -
@gkikas-lgpz
A68a iceberg has started pivoting and heading now SE. As said above, the eastern route is not free of obstacles like Sandwich Islands and rocky shoals.
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@idefix37
... today, I see, the mother berg doubled
birthing a large child berg (aprox. 20 km long)
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@gkikas-lgpz
Yes, this morning it was not so clear due to cloud, but right now it is obvious that a small part (however 20km long) has been separated from A68a. -
@gkikas-lgpz
Now it seems cracking in 2 big pieces
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@idefix37
https://usicecenter.gov/PressRelease/IcebergA68E_F
and
https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2020-12-23
Looks like a giant crack.
During these breakup events a lot of energy released.
The noises as the iceberg broke apart,
called "icequakes" (or cryoseisms).
I want to mention, also, that the "main" iceberg travells faster
than the small fragment (35 nm north) -
24 Dec 2020
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@gkikas-lgpz
It seems that the big piece now moves to NW and the smaller ones to NE. May be due to a different depth and so reaching different current layers?
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@idefix37
...or maybe because of the divergence of the sea currents
in the area aprox. 90 NM south of the S. Georgia island.
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@gkikas-lgpz
Finally the iceberg stopped travelling and broke into several pieces.
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@idefix37
Here we go again
"Brunt Ice Shelf in Antarctica calves"
https://www.bas.ac.uk/media-post/brunt-ice-shelf-in-antarctica-calves/ -
@gkikas-lgpz
Interesting, it shows how these huge icebergs are born. -
@gkikas-lgpz
Thanks for sharing !
