TY  - JOUR
JF  - Science
PB  - American Association for the Advancement of Science (AAAS)
ID  - discovery10196971
SP  - 1196
AV  - public
A1  - Svennevig, Kristian
A1  - Hicks, Stephen P
A1  - Forbriger, Thomas
A1  - Lecocq, Thomas
A1  - Widmer-Schnidrig, Rudolf
A1  - Mangeney, Anne
A1  - Hibert, Clément
A1  - Korsgaard, Niels J
A1  - Lucas, Antoine
A1  - Satriano, Claudio
A1  - Anthony, Robert E
A1  - Mordret, Aurélien
A1  - Schippkus, Sven
A1  - Rysgaard, Søren
A1  - Boone, Wieter
A1  - Gibbons, Steven J
A1  - Cook, Kristen L
A1  - Glimsdal, Sylfest
A1  - Løvholt, Finn
A1  - Van Noten, Koen
A1  - Assink, Jelle D
A1  - Marboeuf, Alexis
A1  - Lomax, Anthony
A1  - Vanneste, Kris
A1  - Taira, Taka?aki
A1  - Spagnolo, Matteo
A1  - De Plaen, Raphael
A1  - Koelemeijer, Paula
A1  - Ebeling, Carl
A1  - Cannata, Andrea
A1  - Harcourt, William D
A1  - Cornwell, David G
A1  - Caudron, Corentin
A1  - Poli, Piero
A1  - Bernard, Pascal
A1  - Larose, Eric
A1  - Stutzmann, Eleonore
A1  - Voss, Peter H
A1  - Lund, Bjorn
A1  - Cannavo, Flavio
A1  - Castro-Díaz, Manuel J
A1  - Chaves, Esteban
A1  - Dahl-Jensen, Trine
A1  - Pinho Dias, Nicolas De
A1  - Déprez, Aline
A1  - Develter, Roeland
A1  - Dreger, Douglas
A1  - Evers, Läslo G
A1  - Fernández-Nieto, Enrique D
A1  - Ferreira, Ana MG
A1  - Funning, Gareth
A1  - Gabriel, Alice-Agnes
A1  - Hendrickx, Marc
A1  - Kafka, Alan L
A1  - Keiding, Marie
A1  - Kerby, Jeffrey
A1  - Khan, Shfaqat A
A1  - Dideriksen, Andreas Kjær
A1  - Lamb, Oliver D
A1  - Larsen, Tine B
A1  - Lipovsky, Bradley
A1  - Magdalena, Ikha
A1  - Malet, Jean-Philippe
A1  - Myrup, Mikkel
A1  - Rivera, Luis
A1  - Ruiz-Castillo, Eugenio
A1  - Wetter, Selina
A1  - Wirtz, Bastien
UR  - https://doi.org/10.1126/science.adm9247
IS  - 6714
TI  - A rockslide-generated tsunami in a Greenland fjord rang Earth for 9 days
Y1  - 2024/09/13/
N1  - This version is the author-accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
EP  - 1205
SN  - 0036-8075
N2  - Climate change is increasingly predisposing polar regions to large landslides. Tsunamigenic landslides have occurred recently in Greenland (Kalaallit Nunaat), but none have been reported from the eastern fjords. In September 2023, we detected the start of a 9-day-long, global 10.88-millihertz (92-second) monochromatic very-long-period (VLP) seismic signal, originating from East Greenland. In this study, we demonstrate how this event started with a glacial thinning?induced rock-ice avalanche of 25 × 106 cubic meters plunging into Dickson Fjord, triggering a 200-meter-high tsunami. Simulations show that the tsunami stabilized into a 7-meter-high long-duration seiche with a frequency (11.45 millihertz) and slow amplitude decay that were nearly identical to the seismic signal. An oscillating, fjord-transverse single force with a maximum amplitude of 5 × 1011 newtons reproduced the seismic amplitudes and their radiation pattern relative to the fjord, demonstrating how a seiche directly caused the 9-day-long seismic signal. Our findings highlight how climate change is causing cascading, hazardous feedbacks between the cryosphere, hydrosphere, and lithosphere.
VL  - 385
ER  -