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Conference Paper

Ice tongue calving in Antarctica triggered by the Hunga Tonga volcanic tsunami, January 2022

Authors

Liang,  Qi
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Li,  Teng
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zheng,  Lei
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hui,  Fengming
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Chen,  Zhuoqi
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Cheng,  Xiao
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Liang, Q., Li, T., Zheng, L., Hui, F., Chen, Z., Cheng, X. (2023): Ice tongue calving in Antarctica triggered by the Hunga Tonga volcanic tsunami, January 2022, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0531


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016944
Abstract
The extraordinary Hunga Tonga-Hunga Ha'apai volcano eruption occurred on 15 January 2022 had quite a global influence through ejecting volcanic ashes and unleashing a variety of strong waves that rippled through oceans and the atmosphere. Here we use remote sensing data to show that a tsunami triggered by the violent explosion resulted in calving from a remote Antarctic ice tongue. The volcano-triggered tsunami travelled over 6,000 km before impinging on the Drygalski Ice Tongue, resulting in the calving of a 10 km × 4.5 km iceberg from the ice front. Our study provides the most detailed observational evidence to date and confirms the linkages between the tsunami and the iceberg calving. Furthermore, it implies the stability of ice shelves in Antarctica may be influenced by extreme events outside the polar regions.