Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf
Forced ice-shelf oscillations modeling was undertaken employing a full 3D finite-difference model of an elastic ice shelf that was coupled to a treatment of under-shelf seawater flux. The seawater flux was described by the wave equation, which includes the pressure excitements in the shallow water l...
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2021
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ftmdpi:oai:mdpi.com:/2077-1312/9/1/46/ 2023-08-20T04:07:17+02:00 Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf Yuri V. Konovalov agris 2021-01-04 application/pdf https://doi.org/10.3390/jmse9010046 EN eng Multidisciplinary Digital Publishing Institute Ocean Engineering https://dx.doi.org/10.3390/jmse9010046 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 9; Issue 1; Pages: 46 ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces Text 2021 ftmdpi https://doi.org/10.3390/jmse9010046 2023-08-01T00:48:09Z Forced ice-shelf oscillations modeling was undertaken employing a full 3D finite-difference model of an elastic ice shelf that was coupled to a treatment of under-shelf seawater flux. The seawater flux was described by the wave equation, which includes the pressure excitements in the shallow water layer under the ice shelf. Thus, ice-shelf flexure was produced by hydrostatic pressure oscillations in the below-shelf seawater. Numerical calculations were performed for an idealized rectangular crevasse-ridden ice-shelf geometry. The crevasses were modeled as rectangular notches into the ice shelf. In the numerical experiments, the ice-plate flexures were forced by harmonic-entering pressure oscillations having a range of periodicities 5–250 s. The dispersion spectra derived for a crevasse-ridden ice shelf revealed “band gaps”—frequency ranges where no eigenmodes exist. The results further showed that the impact of ocean waves on the ice plate is abated from the point of view of a decrease in the spectral average amplitude in the vicinity of the spectrum where the “band gaps” are observed. This impact depends on the depth of crevasse penetration to the ice. Text Ice Shelf MDPI Open Access Publishing Journal of Marine Science and Engineering 9 1 46 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces |
spellingShingle |
ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces Yuri V. Konovalov Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf |
topic_facet |
ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces |
description |
Forced ice-shelf oscillations modeling was undertaken employing a full 3D finite-difference model of an elastic ice shelf that was coupled to a treatment of under-shelf seawater flux. The seawater flux was described by the wave equation, which includes the pressure excitements in the shallow water layer under the ice shelf. Thus, ice-shelf flexure was produced by hydrostatic pressure oscillations in the below-shelf seawater. Numerical calculations were performed for an idealized rectangular crevasse-ridden ice-shelf geometry. The crevasses were modeled as rectangular notches into the ice shelf. In the numerical experiments, the ice-plate flexures were forced by harmonic-entering pressure oscillations having a range of periodicities 5–250 s. The dispersion spectra derived for a crevasse-ridden ice shelf revealed “band gaps”—frequency ranges where no eigenmodes exist. The results further showed that the impact of ocean waves on the ice plate is abated from the point of view of a decrease in the spectral average amplitude in the vicinity of the spectrum where the “band gaps” are observed. This impact depends on the depth of crevasse penetration to the ice. |
format |
Text |
author |
Yuri V. Konovalov |
author_facet |
Yuri V. Konovalov |
author_sort |
Yuri V. Konovalov |
title |
Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf |
title_short |
Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf |
title_full |
Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf |
title_fullStr |
Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf |
title_full_unstemmed |
Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf |
title_sort |
abatement of ocean-wave impact by crevasses in an ice shelf |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/jmse9010046 |
op_coverage |
agris |
genre |
Ice Shelf |
genre_facet |
Ice Shelf |
op_source |
Journal of Marine Science and Engineering; Volume 9; Issue 1; Pages: 46 |
op_relation |
Ocean Engineering https://dx.doi.org/10.3390/jmse9010046 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse9010046 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
9 |
container_issue |
1 |
container_start_page |
46 |
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1774718798805336064 |