Wilson, NJ and Vreugdenhil, CA and Gayen, B and Hester, EW (2023) Double-Diffusive Layer and Meltwater Plume Effects on Ice Face Scalloping in Phase-Change Simulations. In: Geophysical Research Letters, 50 (17).
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Abstract
Antarctic ice shelves are losing mass at increasing rates, yet the ice-ocean interactions that cause significant ice loss are not well understood. A new approach of high-resolution phase-change simulations is used to model vertical ice melting into a stratified ocean. The ocean dynamics show complicated interplay between a turbulent buoyant meltwater plume and double-diffusive layers, while the ice actively melts and changes topography. At room temperatures, the double-diffusive layer thickness is closely linked to ice scalloping. At lower, more realistic ocean temperatures, the meltwater plume becomes prominent with a laminar-to-turbulent transition imprinting an indent on the melting ice. The double-diffusive layer thickness is consistent with scaling prediction, while the real-world application demonstrates reasonably good matching of the scaling prediction for some Antarctic regions. Our study is a key first step toward the future use of high-resolution phase-change fluid dynamics simulations to better understand Antarctic ice shelves in a changing climate. © 2023. The Authors.
| Item Type: | Journal Article |
|---|---|
| Publication: | Geophysical Research Letters |
| Publisher: | John Wiley and Sons Inc |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | Climate change; Dynamics; Ice; Oceanography, Antarctic ice shelves; Diffusive layers; Double diffusive; Double-diffusive layer; Ice shelf scalloping; Ice shelves; Ice-ocean interactions; Meltwater plume; Ocean dynamics; Phase change simulation, Topography, basal melting; fluid dynamics; ice shelf; ice-ocean interaction; meltwater; ocean; plume; prediction; simulation, Antarctic Ice Sheet; Antarctica |
| Department/Centre: | Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences |
| Date Deposited: | 07 Nov 2023 11:15 |
| Last Modified: | 07 Nov 2023 11:15 |
| URI: | https://eprints.iisc.ac.in/id/eprint/83030 |
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