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Balancing the last glacial maximum (LGM) sea-level budget.

Simms, A.R. and Lisiecki, L. and Gebbie, G. and Whitehouse, P.L. and Clark, J.F. (2019) 'Balancing the last glacial maximum (LGM) sea-level budget.', Quaternary science reviews., 205 . pp. 143-153.


Estimates of post-Last Glacial Maximum (LGM) sea-level rise are not balanced by the estimated amount of ice melted since the LGM. We quantify this “missing ice” by reviewing the possible contributions from each of the major ice sheets. This “missing ice” amounts to 18.1 ± 9.6 m of global sea-level rise. Ocean expansion accounts for 2.4 ± 0.3 m of this discrepancy while groundwater could contribute a maximum of another 1.4 m to this offset. After accounting for these two potential contributors to the sea-level budget, the shortfall of 15.6 ± 9.6m suggests that either a large reservoir of water (e.g. a missing LGM ice sheet) has yet to be discovered or current estimates of one or more of the known LGM ice sheets are too small. Included within this latter possibility are potential inadequacies of current models of glacial isostatic adjustment.

Item Type:Article
Full text:(AM) Accepted Manuscript
Available under License - Creative Commons Attribution Non-commercial No Derivatives.
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Publisher statement:© 2019 This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Date accepted:12 December 2018
Date deposited:17 December 2018
Date of first online publication:20 December 2018
Date first made open access:20 December 2019

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