Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait
Abstract The discrete element method (DEM) can provide detailed descriptions of sea ice dynamics that explicitly model floes and discontinuities in the ice, which can be challenging to represent accurately with current models. However, floe‐scale stresses that inform lead formation in sea ice are di...
Published in: | Journal of Advances in Modeling Earth Systems |
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American Geophysical Union (AGU)
2022
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ftdoajarticles:oai:doaj.org/article:4ee658e7c43f42f790ebd1940d859346 2023-05-15T17:14:04+02:00 Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait Brendan West Devin O’Connor Matthew Parno Max Krackow Christopher Polashenski 2022-06-01T00:00:00Z https://doi.org/10.1029/2021MS002614 https://doaj.org/article/4ee658e7c43f42f790ebd1940d859346 EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2021MS002614 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2021MS002614 https://doaj.org/article/4ee658e7c43f42f790ebd1940d859346 Journal of Advances in Modeling Earth Systems, Vol 14, Iss 6, Pp n/a-n/a (2022) discrete element method sea ice modeling sea ice dynamics Nares Strait Physical geography GB3-5030 Oceanography GC1-1581 article 2022 ftdoajarticles https://doi.org/10.1029/2021MS002614 2022-12-30T23:17:13Z Abstract The discrete element method (DEM) can provide detailed descriptions of sea ice dynamics that explicitly model floes and discontinuities in the ice, which can be challenging to represent accurately with current models. However, floe‐scale stresses that inform lead formation in sea ice are difficult to calculate in current DEM implementations. In this paper, we use the ParticLS software library to develop a DEM that models the sea ice as a collection of discrete rigid particles that are initially bonded together using a cohesive beam model that approximates the response of an Euler‐Bernoulli beam located between particle centroids. Ice fracture and lead formation are determined based on the value of a non‐local Cauchy stress state around each particle and a Mohr‐Coulomb fracture model. Therefore, large ice floes are modeled as continuous objects made up of many bonded particles that can interact with each other, deform, and fracture. We generate particle configurations by discretizing the ice in MODIS satellite imagery into polygonal floes that fill the observed ice shape and extent. The model is tested on ice advecting through an idealized channel and through Nares Strait. The results indicate that the bonded DEM model is capable of qualitatively capturing the dynamic sea ice patterns through constrictions such as ice bridges, arch kinematic features, and lead formation. In addition, we apply spatial and temporal scaling analyses to illustrate the model's ability to capture heterogeneity and intermittency in the simulated ice deformation. Article in Journal/Newspaper Nares strait Sea ice Directory of Open Access Journals: DOAJ Articles Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Journal of Advances in Modeling Earth Systems 14 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
discrete element method sea ice modeling sea ice dynamics Nares Strait Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
discrete element method sea ice modeling sea ice dynamics Nares Strait Physical geography GB3-5030 Oceanography GC1-1581 Brendan West Devin O’Connor Matthew Parno Max Krackow Christopher Polashenski Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait |
topic_facet |
discrete element method sea ice modeling sea ice dynamics Nares Strait Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract The discrete element method (DEM) can provide detailed descriptions of sea ice dynamics that explicitly model floes and discontinuities in the ice, which can be challenging to represent accurately with current models. However, floe‐scale stresses that inform lead formation in sea ice are difficult to calculate in current DEM implementations. In this paper, we use the ParticLS software library to develop a DEM that models the sea ice as a collection of discrete rigid particles that are initially bonded together using a cohesive beam model that approximates the response of an Euler‐Bernoulli beam located between particle centroids. Ice fracture and lead formation are determined based on the value of a non‐local Cauchy stress state around each particle and a Mohr‐Coulomb fracture model. Therefore, large ice floes are modeled as continuous objects made up of many bonded particles that can interact with each other, deform, and fracture. We generate particle configurations by discretizing the ice in MODIS satellite imagery into polygonal floes that fill the observed ice shape and extent. The model is tested on ice advecting through an idealized channel and through Nares Strait. The results indicate that the bonded DEM model is capable of qualitatively capturing the dynamic sea ice patterns through constrictions such as ice bridges, arch kinematic features, and lead formation. In addition, we apply spatial and temporal scaling analyses to illustrate the model's ability to capture heterogeneity and intermittency in the simulated ice deformation. |
format |
Article in Journal/Newspaper |
author |
Brendan West Devin O’Connor Matthew Parno Max Krackow Christopher Polashenski |
author_facet |
Brendan West Devin O’Connor Matthew Parno Max Krackow Christopher Polashenski |
author_sort |
Brendan West |
title |
Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait |
title_short |
Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait |
title_full |
Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait |
title_fullStr |
Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait |
title_full_unstemmed |
Bonded Discrete Element Simulations of Sea Ice With Non‐Local Failure: Applications to Nares Strait |
title_sort |
bonded discrete element simulations of sea ice with non‐local failure: applications to nares strait |
publisher |
American Geophysical Union (AGU) |
publishDate |
2022 |
url |
https://doi.org/10.1029/2021MS002614 https://doaj.org/article/4ee658e7c43f42f790ebd1940d859346 |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) |
geographic |
Nares |
geographic_facet |
Nares |
genre |
Nares strait Sea ice |
genre_facet |
Nares strait Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 14, Iss 6, Pp n/a-n/a (2022) |
op_relation |
https://doi.org/10.1029/2021MS002614 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2021MS002614 https://doaj.org/article/4ee658e7c43f42f790ebd1940d859346 |
op_doi |
https://doi.org/10.1029/2021MS002614 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
14 |
container_issue |
6 |
_version_ |
1766071320479531008 |