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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ftdoajarticles:oai:doaj.org/article:b648fd77d0854316acfb75a7c27eb03c 2023-05-15T16:41:43+02:00 Abatement of Ocean-Wave Impact by Crevasses in an Ice Shelf Yuri V. Konovalov 2021-01-01T00:00:00Z https://doi.org/10.3390/jmse9010046 https://doaj.org/article/b648fd77d0854316acfb75a7c27eb03c EN eng MDPI AG https://www.mdpi.com/2077-1312/9/1/46 https://doaj.org/toc/2077-1312 doi:10.3390/jmse9010046 2077-1312 https://doaj.org/article/b648fd77d0854316acfb75a7c27eb03c Journal of Marine Science and Engineering, Vol 9, Iss 46, p 46 (2021) ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2021 ftdoajarticles https://doi.org/10.3390/jmse9010046 2022-12-31T07:02:23Z 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. Article in Journal/Newspaper Ice Shelf Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 9 1 46 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
ice shelf modeling ice shelf vibration crevasse-ridden ice shelf dispersion spectrum inter-mode spaces Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 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 Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
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 |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/jmse9010046 https://doaj.org/article/b648fd77d0854316acfb75a7c27eb03c |
genre |
Ice Shelf |
genre_facet |
Ice Shelf |
op_source |
Journal of Marine Science and Engineering, Vol 9, Iss 46, p 46 (2021) |
op_relation |
https://www.mdpi.com/2077-1312/9/1/46 https://doaj.org/toc/2077-1312 doi:10.3390/jmse9010046 2077-1312 https://doaj.org/article/b648fd77d0854316acfb75a7c27eb03c |
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 |
_version_ |
1766032177543249920 |