Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Footprint of sustained poleward warm water flow within East Antarctic submarine canyons. / Donda, Federica; Rebesco, Michele ; Kovacevic, Vedrana ; Silvano, Alessandro; Bensi, Manuel ; De Santis, Laura ; Rosenthal, Yair ; Torricella, Fiorenza; Gei, Davide ; Baradello, Luca; Leventer, Amy; Post, Alix ; Leitchenkov, German; Noble, Taryn; Zgur, Fabrizio ; Cova, Andrea ; O’Brien, Philip ; Romeo, Roberto .
в: Nature Communications, Том 15, № 1, 6028, 01.12.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Footprint of sustained poleward warm water flow within East Antarctic submarine canyons
AU - Donda, Federica
AU - Rebesco, Michele
AU - Kovacevic, Vedrana
AU - Silvano, Alessandro
AU - Bensi, Manuel
AU - De Santis, Laura
AU - Rosenthal, Yair
AU - Torricella, Fiorenza
AU - Gei, Davide
AU - Baradello, Luca
AU - Leventer, Amy
AU - Post, Alix
AU - Leitchenkov, German
AU - Noble, Taryn
AU - Zgur, Fabrizio
AU - Cova, Andrea
AU - O’Brien, Philip
AU - Romeo, Roberto
PY - 2024/12/1
Y1 - 2024/12/1
N2 - The intrusion of relatively warm water onto the continental shelf is widely recognized as a threat to Antarctic ice shelves and glaciers grounded below sea level, as enhanced ocean heat increases their basal melt. While the circulation of warm water has been documented on the East Antarctic continental shelf, the modes of warm water transport from the deep ocean onto the shelf are still uncertain. This makes predicting the future responses of major East Antarctic marine-grounded glaciers, such as Totten and Ninnis glaciers, particularly challenging. Here, we outline the key role of submarine canyons to convey southward flowing currents that transport warm Circumpolar Deep Water toward the East Antarctic shelf break, thus facilitating warm water intrusion on the continental shelf. Sediment drifts on the eastern flank of the canyons provide evidence for sustained southward-directed flows. These morpho-sedimentary features thus highlight areas potentially prone to enhanced ocean heat transport toward the continental shelf, with repercussions for past, present, and future glacial melting and consequent sea level rise.
AB - The intrusion of relatively warm water onto the continental shelf is widely recognized as a threat to Antarctic ice shelves and glaciers grounded below sea level, as enhanced ocean heat increases their basal melt. While the circulation of warm water has been documented on the East Antarctic continental shelf, the modes of warm water transport from the deep ocean onto the shelf are still uncertain. This makes predicting the future responses of major East Antarctic marine-grounded glaciers, such as Totten and Ninnis glaciers, particularly challenging. Here, we outline the key role of submarine canyons to convey southward flowing currents that transport warm Circumpolar Deep Water toward the East Antarctic shelf break, thus facilitating warm water intrusion on the continental shelf. Sediment drifts on the eastern flank of the canyons provide evidence for sustained southward-directed flows. These morpho-sedimentary features thus highlight areas potentially prone to enhanced ocean heat transport toward the continental shelf, with repercussions for past, present, and future glacial melting and consequent sea level rise.
UR - https://www.mendeley.com/catalogue/7aee8c1a-b534-34af-a2a9-c5c45d494ed6/
U2 - 10.1038/s41467-024-50160-z
DO - 10.1038/s41467-024-50160-z
M3 - Article
C2 - 39019883
VL - 15
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 6028
ER -
ID: 121861563