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Observation of wave propagation over 1,000 km into Antarctica winter pack ice.
- Source :
-
Coastal Engineering Journal . Mar2024, Vol. 66 Issue 1, p115-131. 17p. - Publication Year :
- 2024
-
Abstract
- A drifting wave-ice buoy (Medusa-766) was deployed at the Lützow-Holm Bay (LHB) marginal ice zone in Antarctica during the 63rd Japanese Antarctic Research Expedition to study the wave influence on the unstable LHB fast ice. Medusa-766 survived the Antarctic winter as it was located deep in the ice cover with the shortest distance to the ice-free Southern Ocean over 1,000 km; at this time, there was evidence of 8-cm-height wave signal at the buoy position. Using the the ECMWF's reanalysis wave data, we show that the incoming waves were likely 4-m waves that were generated by an extratropical cyclone in the Southern Ocean. Wave-induced ice breakup potential for this event could extend hundreds of kilometres into the ice field. When Medusa-766 was in LHB in the summer months, it did not detect sizable wave energy despite the low sea ice concentration extent even during on-ice wave events. Understanding the wave attenuation characteristics is needed to elucidate the ocean wave effect to the unstable LHB fast ice. The success of Medusa-766 demonstrates the robustness of the general design and the high sensitivity of the sensor used, which is promising for future LHB wave–ice interaction research. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THEORY of wave motion
*OCEAN waves
*CYCLONES
*WINTER
*SEA ice
ANTARCTIC exploration
Subjects
Details
- Language :
- English
- ISSN :
- 21664250
- Volume :
- 66
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Coastal Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 177165116
- Full Text :
- https://doi.org/10.1080/21664250.2023.2283243