Turbulent heat exchange between water and ice at an evolving ice-water interface
We conduct laboratory experiments on the time evolution of an ice layer cooled from below and subjected to a turbulent shear flow of warm water from above. Our study is motivated by observations of warm water intrusion into the ocean cavity under Antarctic ice shelves, accelerating the melting of th...
Main Authors: | , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
arXiv
2015
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48550/arxiv.1512.00303 https://arxiv.org/abs/1512.00303 |
id |
ftdatacite:10.48550/arxiv.1512.00303 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48550/arxiv.1512.00303 2023-05-15T13:33:03+02:00 Turbulent heat exchange between water and ice at an evolving ice-water interface Ramudu, Eshwan Hirsh, Benjamin Henry Olson, Peter Gnanadesikan, Anand 2015 https://dx.doi.org/10.48550/arxiv.1512.00303 https://arxiv.org/abs/1512.00303 unknown arXiv https://dx.doi.org/10.1017/jfm.2016.321 arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Fluid Dynamics physics.flu-dyn FOS Physical sciences article-journal Article ScholarlyArticle Text 2015 ftdatacite https://doi.org/10.48550/arxiv.1512.00303 https://doi.org/10.1017/jfm.2016.321 2022-04-01T11:32:48Z We conduct laboratory experiments on the time evolution of an ice layer cooled from below and subjected to a turbulent shear flow of warm water from above. Our study is motivated by observations of warm water intrusion into the ocean cavity under Antarctic ice shelves, accelerating the melting of their basal surfaces. The strength of the applied turbulent shear flow in our experiments is represented in terms of its Reynolds number $\textit{Re}$, which is varied over the range $2.0\times10^3 \le \textit{Re} \le 1.0\times10^4$. Depending on the water temperature, partial transient melting of the ice occurs at the lower end of this range of $\textit{Re}$ and complete transient melting of the ice occurs at the higher end. Following these episodes of transient melting, the ice reforms at a rate that is independent of $\textit{Re}$. We fit our experimental measurements of ice thickness and temperature to a one-dimensional model for the evolution of the ice thickness in which the turbulent heat transfer is parameterized in terms of the friction velocity of the shear flow. The melting mechanism we investigate in our experiments can easily account for the basal melting rate of Pine Island Glacier ice shelf inferred from observations. Text Antarc* Antarctic Ice Shelf Ice Shelves Pine Island Glacier DataCite Metadata Store (German National Library of Science and Technology) Antarctic Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Fluid Dynamics physics.flu-dyn FOS Physical sciences |
spellingShingle |
Fluid Dynamics physics.flu-dyn FOS Physical sciences Ramudu, Eshwan Hirsh, Benjamin Henry Olson, Peter Gnanadesikan, Anand Turbulent heat exchange between water and ice at an evolving ice-water interface |
topic_facet |
Fluid Dynamics physics.flu-dyn FOS Physical sciences |
description |
We conduct laboratory experiments on the time evolution of an ice layer cooled from below and subjected to a turbulent shear flow of warm water from above. Our study is motivated by observations of warm water intrusion into the ocean cavity under Antarctic ice shelves, accelerating the melting of their basal surfaces. The strength of the applied turbulent shear flow in our experiments is represented in terms of its Reynolds number $\textit{Re}$, which is varied over the range $2.0\times10^3 \le \textit{Re} \le 1.0\times10^4$. Depending on the water temperature, partial transient melting of the ice occurs at the lower end of this range of $\textit{Re}$ and complete transient melting of the ice occurs at the higher end. Following these episodes of transient melting, the ice reforms at a rate that is independent of $\textit{Re}$. We fit our experimental measurements of ice thickness and temperature to a one-dimensional model for the evolution of the ice thickness in which the turbulent heat transfer is parameterized in terms of the friction velocity of the shear flow. The melting mechanism we investigate in our experiments can easily account for the basal melting rate of Pine Island Glacier ice shelf inferred from observations. |
format |
Text |
author |
Ramudu, Eshwan Hirsh, Benjamin Henry Olson, Peter Gnanadesikan, Anand |
author_facet |
Ramudu, Eshwan Hirsh, Benjamin Henry Olson, Peter Gnanadesikan, Anand |
author_sort |
Ramudu, Eshwan |
title |
Turbulent heat exchange between water and ice at an evolving ice-water interface |
title_short |
Turbulent heat exchange between water and ice at an evolving ice-water interface |
title_full |
Turbulent heat exchange between water and ice at an evolving ice-water interface |
title_fullStr |
Turbulent heat exchange between water and ice at an evolving ice-water interface |
title_full_unstemmed |
Turbulent heat exchange between water and ice at an evolving ice-water interface |
title_sort |
turbulent heat exchange between water and ice at an evolving ice-water interface |
publisher |
arXiv |
publishDate |
2015 |
url |
https://dx.doi.org/10.48550/arxiv.1512.00303 https://arxiv.org/abs/1512.00303 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Antarctic Pine Island Glacier |
geographic_facet |
Antarctic Pine Island Glacier |
genre |
Antarc* Antarctic Ice Shelf Ice Shelves Pine Island Glacier |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Pine Island Glacier |
op_relation |
https://dx.doi.org/10.1017/jfm.2016.321 |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1512.00303 https://doi.org/10.1017/jfm.2016.321 |
_version_ |
1766038174487805952 |