Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO)
Results from the Heinrich Event INtercOmparison (HEINO) topic of the Ice-Sheet Model Intercomparison Project (ISMIP) are presented. ISMIP HEINO was designed to explore internal largescale ice-sheet instabilities in different contemporary ice-sheet models. These instabilities are of interest because...
Main Authors: | , , , , , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/187986 https://dipot.ulb.ac.be/dspace/bitstream/2013/187986/3/doi_171613.pdf |
id |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/187986 |
---|---|
record_format |
openpolar |
spelling |
ftunivbruxelles:oai:dipot.ulb.ac.be:2013/187986 2023-05-15T16:35:28+02:00 Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) Calov, Reinhard Greve, Ralf Abe-Ouchi, Ayako Bueler, Ed. Huybrechts, Philippe Johnson, Jesse Pattyn, Frank Pollard, David Ritz, Catherine Saito, Fuyuki Tarasov, Lev 2010-08 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/187986 https://dipot.ulb.ac.be/dspace/bitstream/2013/187986/3/doi_171613.pdf en eng uri/info:doi/10.3189/002214310792447789 uri/info:scp/77956966519 https://dipot.ulb.ac.be/dspace/bitstream/2013/187986/3/doi_171613.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/187986 1 full-text file(s): info:eu-repo/semantics/restrictedAccess Journal of Glaciology, 56 (197 Géologie et minéralogie info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2010 ftunivbruxelles 2022-06-12T22:09:17Z Results from the Heinrich Event INtercOmparison (HEINO) topic of the Ice-Sheet Model Intercomparison Project (ISMIP) are presented. ISMIP HEINO was designed to explore internal largescale ice-sheet instabilities in different contemporary ice-sheet models. These instabilities are of interest because they are a possible cause of Heinrich events. A simplified geometry experiment reproduces the main characteristics of the Laurentide ice sheet, including the sedimented region over Hudson Bay and Hudson Strait. The model experiments include a standard run plus seven variations. Nine dynamic/thermodynamic ice-sheet models were investigated; one of these models contains a combination of the shallow-shelf (SSA) and shallow-ice approximation (SIA), while the remaining eight models are of SIA type only. Seven models, including the SIA-SSA model, exhibit oscillatory surges with a period of ∼1000 years for a broad range of parameters, while two models remain in a permanent state of streaming for most parameter settings. In a number of models, the oscillations disappear for high surface temperatures, strong snowfall and small sediment sliding parameters. In turn, low surface temperatures and low snowfall are favourable for the ice-surge cycles. We conclude that further improvement of ice-sheet models is crucial for adequate, robust simulations of cyclic large-scale instabilities. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Hudson Bay Hudson Strait Ice Sheet Journal of Glaciology DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Hudson Hudson Bay Hudson Strait ENVELOPE(-70.000,-70.000,62.000,62.000) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Géologie et minéralogie |
spellingShingle |
Géologie et minéralogie Calov, Reinhard Greve, Ralf Abe-Ouchi, Ayako Bueler, Ed. Huybrechts, Philippe Johnson, Jesse Pattyn, Frank Pollard, David Ritz, Catherine Saito, Fuyuki Tarasov, Lev Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) |
topic_facet |
Géologie et minéralogie |
description |
Results from the Heinrich Event INtercOmparison (HEINO) topic of the Ice-Sheet Model Intercomparison Project (ISMIP) are presented. ISMIP HEINO was designed to explore internal largescale ice-sheet instabilities in different contemporary ice-sheet models. These instabilities are of interest because they are a possible cause of Heinrich events. A simplified geometry experiment reproduces the main characteristics of the Laurentide ice sheet, including the sedimented region over Hudson Bay and Hudson Strait. The model experiments include a standard run plus seven variations. Nine dynamic/thermodynamic ice-sheet models were investigated; one of these models contains a combination of the shallow-shelf (SSA) and shallow-ice approximation (SIA), while the remaining eight models are of SIA type only. Seven models, including the SIA-SSA model, exhibit oscillatory surges with a period of ∼1000 years for a broad range of parameters, while two models remain in a permanent state of streaming for most parameter settings. In a number of models, the oscillations disappear for high surface temperatures, strong snowfall and small sediment sliding parameters. In turn, low surface temperatures and low snowfall are favourable for the ice-surge cycles. We conclude that further improvement of ice-sheet models is crucial for adequate, robust simulations of cyclic large-scale instabilities. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Calov, Reinhard Greve, Ralf Abe-Ouchi, Ayako Bueler, Ed. Huybrechts, Philippe Johnson, Jesse Pattyn, Frank Pollard, David Ritz, Catherine Saito, Fuyuki Tarasov, Lev |
author_facet |
Calov, Reinhard Greve, Ralf Abe-Ouchi, Ayako Bueler, Ed. Huybrechts, Philippe Johnson, Jesse Pattyn, Frank Pollard, David Ritz, Catherine Saito, Fuyuki Tarasov, Lev |
author_sort |
Calov, Reinhard |
title |
Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) |
title_short |
Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) |
title_full |
Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) |
title_fullStr |
Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) |
title_full_unstemmed |
Results from the Ice-Sheet Model Intercomparison Project-Heinrich Event INtercOmparison (ISMIP HEINO) |
title_sort |
results from the ice-sheet model intercomparison project-heinrich event intercomparison (ismip heino) |
publishDate |
2010 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/187986 https://dipot.ulb.ac.be/dspace/bitstream/2013/187986/3/doi_171613.pdf |
long_lat |
ENVELOPE(-70.000,-70.000,62.000,62.000) |
geographic |
Hudson Hudson Bay Hudson Strait |
geographic_facet |
Hudson Hudson Bay Hudson Strait |
genre |
Hudson Bay Hudson Strait Ice Sheet Journal of Glaciology |
genre_facet |
Hudson Bay Hudson Strait Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology, 56 (197 |
op_relation |
uri/info:doi/10.3189/002214310792447789 uri/info:scp/77956966519 https://dipot.ulb.ac.be/dspace/bitstream/2013/187986/3/doi_171613.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/187986 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1766025692792750080 |