Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/181347
Title: The hemispheric origins of meltwater pulse 1B
Authors: Velay-Vitow, J.
Peltier, W. R.
Stuhne, G. R.
Li, Tanghua
Keywords: Earth and Environmental Sciences
Issue Date: 2024
Source: Velay-Vitow, J., Peltier, W. R., Stuhne, G. R. & Li, T. (2024). The hemispheric origins of meltwater pulse 1B. Geophysical Journal International, 239(2), 1021-1037. https://dx.doi.org/10.1093/gji/ggae311
Project: MOE2019-T3-1-004 
MOE-T2EP50120-0007 
Journal: Geophysical Journal International 
Abstract: Antarctica has been proposed as a significant source of the meltwater that entered the oceans during meltwater pulse 1B (MWP1B) approximately 11 500 yr ago. Support for this scenario has been provided by evidence that the deep fjords of coastal Antarctica, which were heavily glaciated at the maximum of glaciation, were deglaciated at this time. Further support for this scenario was provided by the observation that the inter-hemispheric sea-level teleconnection associated with significant Southern Hemisphere deglaciation at this time provided an explanation of the highly non-monotonic relative sea-level histories recorded at sites on the coast of Scotland, a region which had also been heavily glaciated at the last glacial maximum. Furthermore, it has been argued that a significant contribution to MWP1B must have also been delivered to the oceans by the abrupt Northern Hemisphere warming that occurred at the end of the Younger Dryas (YD) cold reversal, which also occurred approximately 11 500 yr ago. Our focus in this paper is to distinguish between these two possible primary sources of MWP1B. The investigation of how local alterations to ice thicknesses are able to explain evidence which has previously been used to argue for an Antarctic dominant MWP1B will lead us to the conclusion that the Laurentide may be primary source of MWP1B.
URI: https://hdl.handle.net/10356/181347
ISSN: 0956-540X
DOI: 10.1093/gji/ggae311
Research Centres: Earth Observatory of Singapore 
Rights: © 2024 The Author(s). Published by Oxford University Press on behalf of The Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EOS Journal Articles

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