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- W4385810083 abstract "Abstract The Ward Hunt and Milne ice shelves are the present-day remnants of a much larger ice shelf that once fringed the coast of Ellesmere Island, Canada. These ice shelves possess a unique surface morphology consisting of wave-like rolls that run parallel to the shoreline. Setting aside the question of how these rolls originally developed, we consider the impact of this roll morphology on the stability of the ice shelf. In particular, we examine whether periodic variations in ice-shelf thickness and water depth implied by the rolls prevent the excitation of Lamb waves in the ice shelf. Using a hierarchy of numerical models, we find that there are band gaps in the flexural and extensional modes of the ice shelf, implying the existence of frequency ranges that lack wave motion. We show that an ice shelf with rolls is able to reflect waves in these frequency ranges that are incident upon its ice front, thereby mitigating undue stress and calving. We speculate that the roll morphology provides a “fitness” for survival that explains why rolls are observed in the oldest and thickest multiyear sea ice of the Arctic." @default.
- W4385810083 created "2023-08-15" @default.
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- W4385810083 date "2023-08-14" @default.
- W4385810083 modified "2023-09-27" @default.
- W4385810083 title "Ocean wave blocking by periodic surface rolls fortifies Arctic ice shelves" @default.
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- W4385810083 doi "https://doi.org/10.1017/jog.2023.58" @default.
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