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Author Topic: PIG has calved  (Read 312160 times)

Stephan

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Re: PIG has calved
« Reply #1050 on: October 03, 2019, 09:08:43 PM »
Yes, and imagine, this comparison is just six days apart. No other place in Antarctica is moving as fast as PIIS does. In this case I have the impression, that SW tributary is also moving.

OT:
Did you recognize that B-22-A has turned backwards in NE direction the last days? It seems to be flowing freely now without pinning points. Hope it can escape into deeper seas to give room for new icebergs from Thwaites.

blumenkraft

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Re: PIG has calved
« Reply #1051 on: October 04, 2019, 07:26:07 AM »
Thanks for the confirmation, Stephan.

If it is really free-floating by now we will lose it to the ocean pretty soon.

But i bet the bathymetry has many more surprises. There are a lot of other grounded icebergs in the vicinity.

This will be exciting to watch this summer.
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baking

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Re: PIG has calved
« Reply #1052 on: October 05, 2019, 05:04:25 PM »
OT:
Did you recognize that B-22-A has turned backwards in NE direction the last days? It seems to be flowing freely now without pinning points. Hope it can escape into deeper seas to give room for new icebergs from Thwaites.

This is a good catch.  Movement to the West (or NW) is "good" because it means the iceberg is becoming grounded again.  This is pretty much what it has been doing every few months lately.  Movement to the East (or NE) is "bad" because that is movement towards deeper water and possibly floating free (or at least farther away.)  It bears watching.

Of course, an iceberg of this age, condition, and size could also breakup under the stresses of being grounded, regrounded, and pushed by wind and currents.  Floating off intact seemed like the least likely scenario.

Shared Humanity

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Re: PIG has calved
« Reply #1053 on: October 05, 2019, 06:44:27 PM »
Would be cool to see it exit into the southern ocean essentially intact.

oren

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Re: PIG has calved
« Reply #1054 on: October 05, 2019, 06:59:59 PM »
Of course would be better to see it regrounded and stabilize Thwaites, but I dread that its recent movement opens up a lot of destabilization in the near future.

IceConcerned

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Re: PIG has calved
« Reply #1055 on: October 08, 2019, 09:12:24 AM »
A minor calving at the junction between PIG and SW tributary.
Tha cracks in the SW Tributary seem to have widened at htat point too