File:Larsen-C ice shelf collapse.gif

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Larsen-C_ice_shelf_collapse.gif ‎(480 × 480 pixels, file size: 509 KB, MIME type: image/gif, looped, 9 frames, 10 s)

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Français : Capturée le 25 septembre 2017, l'image montre l'iceberg près du centre. L'iceberg A68 a été bousculé d'avant en arrière contre la plate-forme de glace, mais des images satellites plus récentes ont révélé que l'écart entre l'iceberg et la plate-forme s'élargit, et qu'il pourrait dériver vers la mer.

L'A68 fait environ deux fois la taille du Luxembourg et il a modifié à jamais le contour de la péninsule antarctique - environ 10 % de la superficie de la plate-forme glaciaire Larsen C a été supprimée.

La perte d'un morceau aussi important est intéressante car les plates-formes de glace le long de la péninsule jouent un rôle important dans le renforcement des glaciers qui alimentent la glace vers la mer, en ralentissant efficacement leur flux.

Des événements antérieurs survenus plus au nord sur les plateaux Larsen A et B, capturés par les satellites ERS et Envisat de l'ESA, indiquent que le flux des glaciers à l'arrière peut s'accélérer lorsqu'une grande partie d'un plateau de glace est perdue, contribuant ainsi à l'élévation du niveau de la mer.
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Source https://media.giphy.com/media/7A4mqB76RmfVhFZ8t5/giphy.gif
Author European Space Agency

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