TY - JOUR
T1 - Internal tsunamigenesis and ocean mixing driven by glacier calving in Antarctica
AU - Meredith, Michael P.
AU - Inall, Mark E.
AU - Brearley, J. Alexander
AU - Ehmen, Tobias
AU - Sheen, Katy
AU - Munday, David
AU - Cook, Alison
AU - Retallick, Katherine
AU - Van Landeghem, Katrien
AU - Gerrish, Laura
AU - Annett, Amber
AU - Carvalho, Filipa
AU - Jones, Rhiannon
AU - Naveira Garabato, Alberto C.
AU - Bull, Christopher Y.S.
AU - Wallis, Benjamin J.
AU - Hogg, Anna E.
AU - Scourse, James
N1 - Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).
PY - 2022/11/23
Y1 - 2022/11/23
N2 - Ocean mixing around Antarctica exerts key influences on glacier dynamics and ice shelf retreats, sea ice, and marine productivity, thus affecting global sea level and climate. The conventional paradigm is that this is dominated by winds, tides, and buoyancy forcing. Direct observations from the Antarctic Peninsula demonstrate that glacier calving triggers internal tsunamis, the breaking of which drives vigorous mixing. Being widespread and frequent, these internal tsunamis are at least comparable to winds, and much more important than tides, in driving regional shelf mixing. They are likely relevant everywhere that marine-terminating glaciers calve, including Greenland and across the Arctic. Calving frequency may change with higher ocean temperatures, suggesting possible shifts to internal tsunamigenesis and mixing in a warming climate.
AB - Ocean mixing around Antarctica exerts key influences on glacier dynamics and ice shelf retreats, sea ice, and marine productivity, thus affecting global sea level and climate. The conventional paradigm is that this is dominated by winds, tides, and buoyancy forcing. Direct observations from the Antarctic Peninsula demonstrate that glacier calving triggers internal tsunamis, the breaking of which drives vigorous mixing. Being widespread and frequent, these internal tsunamis are at least comparable to winds, and much more important than tides, in driving regional shelf mixing. They are likely relevant everywhere that marine-terminating glaciers calve, including Greenland and across the Arctic. Calving frequency may change with higher ocean temperatures, suggesting possible shifts to internal tsunamigenesis and mixing in a warming climate.
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U2 - 10.1126/sciadv.add0720
DO - 10.1126/sciadv.add0720
M3 - Article
C2 - 36417533
AN - SCOPUS:85142611656
SN - 2375-2548
VL - 8
JO - Science Advances
JF - Science Advances
IS - 47
M1 - eadd0720
ER -