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Author Topic: Milne Glacier / ice Shelf  (Read 1741 times)

NotaDenier

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Milne Glacier / ice Shelf
« on: August 03, 2020, 04:17:51 AM »
Cross post from the 2020 arctic sea ice thread.

Your comment made me look a little closer friv. That was actually a floating ice tongue of the Milne? glacier. It was more like 100m thick (in the 80s) and was the second largest ice Shelf in the attic. So that’s actually a pretty substantial iceberg.

https://en.wikipedia.org/wiki/Milne_Ice_Shelf

https://wirl.carleton.ca/research/ice/ice-shelves/milne-ice-shelf/

https://www.rcinet.ca/en/2013/08/09/eye-on-the-arctic-understanding-the-milne-ice-shelf/

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011JF002074

Edit the shelf was thinner but still pretty thick and held back a epishelf lake. Which I had to read up on. Also the scientists camp and instruments were destroyed but luckily they were not there.

NotaDenier

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NotaDenier

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Re: Milne Glacier / ice Shelf
« Reply #2 on: August 03, 2020, 01:02:16 PM »
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/4AE77AAD799D0A12C61793E822927148/S0022143000006043a.pdf/milne_glacier_northern_ellesmere_island_nwt_canada_a_surging_glacier.pdf

ABSTRACT. During the period 1966 to 1983 Milne Glacier advanced 4.25kmatameanallnualrateof250ma- I,Sincesurgescommonlyoccur over a two or three year period the maximum rate of advance could have beengreaterthan2kma-I.Theglacierterminushasanumberoffeatures indicative ofpast surge behaviour. Of these, at least three looped moraincs suggest surges of the main valley glacier and tributary glaciers. As Milne Glacier is a cold glacier, surges may possibly be Ihermally regulaled. Accu- mulation rates on the ice caps of northern Ellesmere Island are low hence a critical condition in thf' " reservoir area" will be only slowly attained. As a consequence the periodicity of surges in \I1ilnc Glacier and other High Arctic glaciers is expected to be high.

Tor Bejnar

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Re: Milne Glacier / ice Shelf
« Reply #3 on: August 03, 2020, 09:06:32 PM »
...
Sometimes we have to help our computers:
  • ABSTRACT. During the period 1966 to 1983 Milne Glacier advanced 4.25 km at a mean annual rate of 250 m a-1.  Since surges commonly occur over a two or three year period the maximum rate of advance could have been greater than 2 km a-1.  The glacier terminus has a number of features indicative of past surge behaviour.  Of these, at least three looped moraines suggest surges of the main valley glacier and tributary glaciers.  As Milne Glacier is a cold glacier, surges may possibly be thermally regulated.  Accumulation rates on the ice caps of northern Ellesmere Island are low hence a critical condition in the "reservoir area" will be only slowly attained. As a consequence the periodicity of surges in Milne Glacier and other High Arctic glaciers is expected to be high.
Arctic ice is healthy for children and other living things because "we cannot negotiate with the melting point of ice"

NotaDenier

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Re: Milne Glacier / ice Shelf
« Reply #4 on: August 04, 2020, 12:57:05 AM »
Oops! Sorry.

grixm

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Re: Milne Glacier / ice Shelf
« Reply #5 on: August 07, 2020, 08:03:30 AM »
https://ca.reuters.com/article/idCAKCN2523JH

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(Reuters) - The last fully intact ice shelf in the Canadian Arctic has collapsed, losing more than 40% of its area in just two days at the end of July, researchers said on Thursday.

NotaDenier

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Re: Milne Glacier / ice Shelf
« Reply #6 on: August 08, 2020, 02:48:49 AM »

crandles

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Re: Milne Glacier / ice Shelf
« Reply #7 on: August 11, 2020, 02:54:29 PM »
https://www.bbc.co.uk/news/science-environment-53737138

Quote
Milne Ice Shelf: Satellites capture Arctic ice split

Located on the northern margin of Canada's Ellesmere Island, the ice platform split on 30/31 July to form a free-floating bloc some 80 sq km (30 sq miles) in area.

By 3 August, this berg, or "ice island", had itself ruptured in two, with both segments then seen to drift out into the Arctic Ocean.


Milne itself now measures only 106 sq km.