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 V.; Pattyn, Frank; Pollard, David; Ritz, Catherine; Saito, Fuyuki; Tarasov, Lev

Results from the Ice-Sheet Model Intercomparison Project–Heinrich Event INtercOmparison (ISMIP HEINO)

Calov, Reinhard; Greve, Ralf; Abe-Ouchi, Ayako et al.

Journal of Glaciology, 2010, 56(197), 371-383

Permalink : https://hdl.handle.net/2115/44808

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アクセス権	open access
URI	https://hdl.handle.net/2115/44808
タイトル	Results from the Ice-Sheet Model Intercomparison Project–Heinrich Event INtercOmparison (ISMIP HEINO)
著者	Calov, Reinhard ; Greve, Ralf ; Abe-Ouchi, Ayako ; Bueler, Ed ; Huybrechts, Philippe ; Johnson, Jesse V. ; Pattyn, Frank ; Pollard, David ; Ritz, Catherine ; Saito, Fuyuki ; Tarasov, Lev
著者名 Calov, Reinhard
e-Rad_Researcher 90374644 著者名 Greve, Ralf
著者名 Abe-Ouchi, Ayako
著者名 Bueler, Ed
著者名 Huybrechts, Philippe
著者名 Johnson, Jesse V.
著者名 Pattyn, Frank
著者名 Pollard, David
著者名 Ritz, Catherine
著者名 Saito, Fuyuki
著者名 Tarasov, Lev
言語	英語
キーワード	Ice sheet
	Model intercomparison
	ISMIP
	Heinrich event
	Instability
発行日	2010-08-01
出版者	International Glaciological Society
収録物名	Journal of Glaciology
巻(号)	56(197)
ページ	371-383
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	© 2010 International Glaciological Society
PISSN	0022-1430
EISSN	1727-5652
関連情報	URI http://www.igsoc.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3189/002214310792447789