Articles | Volume 20, issue 11
https://doi.org/10.5194/cp-20-2499-2024
https://doi.org/10.5194/cp-20-2499-2024
Research article
 | 
12 Nov 2024
Research article |  | 12 Nov 2024

The comparative role of physical system processes in Hudson Strait ice stream cycling: a comprehensive model-based test of Heinrich event hypotheses

Kevin Hank and Lev Tarasov

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Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to minor revisions (review by editor) (07 Jul 2024) by Pepijn Bakker
AR by Kevin Hank on behalf of the Authors (22 Sep 2024)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (24 Sep 2024) by Pepijn Bakker
AR by Kevin Hank on behalf of the Authors (26 Sep 2024)  Manuscript 
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Short summary
The ice-rafted debris signature of Heinrich events in marine sedimentary cores is usually attributed to massive ice discharge from the Laurentide Ice Sheet. However, the driving mechanism of this pulsed discharge remains  unclear. We compare three previously proposed hypotheses and examine the role of relevant system processes. We find ice stream surge cycling is the most likely mechanism, but its character is sensitive to both the geothermal heat flux and the form of the basal drag law.