Fitxer:Larsen-C crack interferogram ESA376365.jpg

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English: Two Sentinel-1 radar images from 7 and 14 April 2017 were combined to create this interferogram showing the growing crack in Antarctica’s Larsen-C ice shelf.

Polar scientist Anna Hogg said: “We can measure the iceberg crack propagation much more accurately when using the precise surface deformation information from an interferogram like this, rather than the amplitude – or black and white – image alone where the crack may not always be visible.”
When the ice shelf calves this iceberg it will be one of the largest ever recorded – but exactly how long this will take is difficult to predict. The sensitivity of ice shelves to climate change has already been observed on the neighbouring Larsen-A and Larsen-B ice shelves, both of which collapsed in 1995 and 2002, respectively.
These ice shelves are important because they act as buttresses, holding back the ice that flows towards the sea.

The Copernicus Sentinel-1 two-satellite constellation is indispensable for discovering and monitoring events like these because it delivers radar images every six days, even when Antarctica is shrouded in darkness for several months of the year.
Data
Font http://www.esa.int/spaceinimages/Images/2017/04/Larsen-C_crack_interferogram
Autor European Space Agency
Permís
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contains modified Copernicus Sentinel data (2017), processed by A. Hogg/CPOM/Priestly Centre, CC BY-SA 3.0 IGO
Title
InfoField
Larsen-C crack interferogram
System
InfoField
Copernicus
Keywords
InfoField
Climate; Ice; Ice sheets
Location
InfoField
Antarctic
Mission
InfoField
Sentinel-1
Activity
InfoField
Observing the Earth

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This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 IGO license.
Reconeixement: ESA/Copernicus, A. Hogg/CPOM/Priestly Centre, CC BY-SA IGO 3.0
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actual10:00, 6 maig 2017Miniatura per a la versió del 10:00, 6 maig 20175.000 × 4.368 (8,65 Mo)== {{int:filedesc}} == {{information | description = {{en|1=Two Sentinel-1 radar images from 7 and 14 April 2017 were combined to create this interferogram showing the growing crack in Antarctica’s Larsen-C ice shelf. Polar scientist Anna Hogg said:...

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