Effect of isostatic rebound on modelled ice volume variations during the last 200 kyr
-
Altmetric Citations
Crucifix, Michel; Loutre, Marie-France; Berger, Andre; Lambeck, Kurt
Description
Deformation of the lithosphere under an ice load can be approximated using the hypothesis of local damped isostasy. This simple formulation has been systematically compared with a three-dimensional model of the crust-mantle system for simple ice-load scenarios with a period in the range 20-100 kyr. The comparison enables us to introduce the concepts of effective upper mantle density and effective relaxation time into the isostatic model for the response of the Earth to the ice sheets. These...[Show more]
dc.contributor.author | Crucifix, Michel | |
---|---|---|
dc.contributor.author | Loutre, Marie-France | |
dc.contributor.author | Berger, Andre | |
dc.contributor.author | Lambeck, Kurt | |
dc.date.accessioned | 2015-12-13T23:27:08Z | |
dc.identifier.issn | 0012-821X | |
dc.identifier.uri | http://hdl.handle.net/1885/93183 | |
dc.description.abstract | Deformation of the lithosphere under an ice load can be approximated using the hypothesis of local damped isostasy. This simple formulation has been systematically compared with a three-dimensional model of the crust-mantle system for simple ice-load scenarios with a period in the range 20-100 kyr. The comparison enables us to introduce the concepts of effective upper mantle density and effective relaxation time into the isostatic model for the response of the Earth to the ice sheets. These parameters depend on the Earth model considered, ice sheet size and the period of the load cycle. The local damped isostasy model has been implemented in the Louvain-la-Neuve climate model to assess the impact of isostasy on continental ice volume variations for the last 200 kyr. Results suggest that isostasy acts as a negative feedback for ice volume during the glaciation process and acts as a positive feedback during the deglaciation. Moreover, taking isostasy into account is necessary to simulate variations in Northern Hemisphere ice volume during isotopic stage 3. Lastly, the use of effective mantle density and effective relaxation time improves the model performance regarding SPECMAP reconstructions. | |
dc.publisher | Elsevier | |
dc.source | Earth and Planetary Science Letters | |
dc.subject | Keywords: climate change; glacial rebound; isostasy; paleoclimate; Quaternary Climate; Cycles; Glacial rebound; Models | |
dc.title | Effect of isostatic rebound on modelled ice volume variations during the last 200 kyr | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
local.identifier.citationvolume | 184 | |
dc.date.issued | 2001 | |
local.identifier.absfor | 040403 - Geophysical Fluid Dynamics | |
local.identifier.absfor | 040605 - Palaeoclimatology | |
local.identifier.ariespublication | MigratedxPub26535 | |
local.type.status | Published Version | |
local.contributor.affiliation | Crucifix, Michel, Catholic University of Louvain | |
local.contributor.affiliation | Loutre, Marie-France, Catholic University of Louvain | |
local.contributor.affiliation | Lambeck, Kurt, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Berger, Andre, Catholic University of Louvain | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.startpage | 623 | |
local.bibliographicCitation.lastpage | 633 | |
local.identifier.doi | 10.1016/S0012-821X(00)00361-7 | |
dc.date.updated | 2015-12-12T09:49:17Z | |
local.identifier.scopusID | 2-s2.0-0035080061 | |
Collections | ANU Research Publications |
Download
File | Description | Size | Format | Image |
---|---|---|---|---|
01_Crucifix_Effect_of_isostatic_rebound_on_2001.pdf | 277.5 kB | Adobe PDF | Request a copy | |
02_Crucifix_Effect_of_isostatic_rebound_on_2001.pdf | 277.5 kB | Adobe PDF | Request a copy |
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.
Updated: 17 November 2022/ Responsible Officer: University Librarian/ Page Contact: Library Systems & Web Coordinator