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Thinning Antarctic Ice Shelf & Ice Sheet's Slippery Relationship

Thinning Antarctic Ice Shelf & Ice Sheet's Slippery Relationship


Alex Wierbinski's picture

By Alex Wierbinski - Posted on 16 December 2019

 

OCEANS, ICE, & THE ANTARCTIC

Antarctic Ice Shelf & Ice Sheet's Slippery Relationship

Evidence: Antarctica's Thinning Ice Shelves Causing More Ice to Move from Land into Sea,
Northumbria University, December 2, 2019.

MAIN POINTS

The Theory
Corked & Bottled-Up Ice
"Satellite measurements taken between 1994 and 2017 have detected significant changes in the thickness of the floating ice shelves that surround the Antarctic Ice Sheet. These shelves buttress against the land-based ice, holding them in place like a safety band."

"It is believed that the ice shelves may be thinning due to changes in ocean heat content, either by ocean warming or from changes in how the ocean circulates around and below the shelves..."

Glaciers Uncorked
"There are other processes in play as well, but we can now state firmly that the observed changes in ice-shelves do cause significant changes over the grounded ice, speeding up its flow into the ocean."

Instant Ice Flow Increase
"Generally, we distinguish between an instantaneous response or a delayed, transient response. Our study shows the thinning of the ice shelves results in a significant instantaneous response to ice flow and ongoing mass loss. This means that we are not protected against the impact of the Antarctic Ice Sheet on global sea levels by a long response time."

The Reality
Uncorked Antarctic Ice
"...we have now shown that the observed ice shelf changes do indeed impact on upstream flow significantly."

 

Biggest Picture

Oct 2019
Potential Confluence of Grand Orbital Cycles with Human Ignorance could End Antarctic Ice

 

W Antarctic

May 2019
Rapid Degradation of West Antarctic Ice Underway

 

May 2019
Much Faster Ross Ice Shelf Melting than Assumed or Expected

 

July 2019
Thwaites Glacier to be Gone in between 200 & 600 Years

 

June 2018
2018 Status of All Antarctic Ice: Ice Loss Triples

 

E Antarctica

Jan 2019
Links: Note the Change in Perceptions
Once Thought Invincible, East Antarctic Ice Now seen as Vulnerable

 

Jan 2019
Moderate warming could melt East Antarctic Ice Sheet

 

Dec 2018
Totten and Four East Antarctic Glacial Neighbors are Moving

 

November 2018
Passing the Pliocene
Climate Crash News: Status of East Antarctic Ice

Antarctic Resources

Antarctic Map
Canada/British Antarctic Survey detailed map of Antarctica
Canada's BAS PDF Antarctic Map

 

 

 

Antarctic Ice Shelves
Landsat Image Mosaic of Antarctica (LIMA) showing location of key ice shelves.
Landsat Image Mosaic of Antarctica (LIMA) showing location of key ice shelves, credit to Antarctic Glaciers Organization.
Credit to Antarctic Glaciers Organization

 

 

 

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