Sea-Level Fingerprinting as a Direct Test for the Source of Global Meltwater Pulse IA

The ice reservoir that served as the source for the meltwater pulse IA remains enigmatic and controversial. We show that each of the melting scenarios that have been proposed for the event produces a distinct variation, or fingerprint, in the global distribution of meltwater. We compare sea-level fi...

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Bibliographic Details
Published in:Science
Main Authors: Clark, P. U., Mitrovica, J. X., Milne, G. A., Tamisiea, M. E.
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 2002
Subjects:
Antarctic
Sunda
The Antarctic
Antarc*
Ice Sheet
Online Access:http://dx.doi.org/10.1126/science.1068797
https://www.science.org/doi/pdf/10.1126/science.1068797
Description
Summary:The ice reservoir that served as the source for the meltwater pulse IA remains enigmatic and controversial. We show that each of the melting scenarios that have been proposed for the event produces a distinct variation, or fingerprint, in the global distribution of meltwater. We compare sea-level fingerprints associated with various melting scenarios to existing sea-level records from Barbados and the Sunda Shelf and conclude that the southern Laurentide Ice Sheet could not have been the sole source of the meltwater pulse, whereas a substantial contribution from the Antarctic Ice Sheet is consistent with these records.

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