Laurentide-Cordilleran Ice Sheet saddle collapse as a contribution to meltwater pulse 1A
Gregoire, L. J.
Payne, A. J.
MetadataShow full item record
CitationGomez, N., L. J. Gregoire, J. X. Mitrovica, and A. J. Payne. 2015. “Laurentide‐Cordilleran Ice Sheet Saddle Collapse as a Contribution to Meltwater Pulse 1A.” Geophysical Research Letters 42 (10): 3954–62. https://doi.org/10.1002/2015gl063960.
AbstractThe source or sources of meltwater pulse 1A (MWP-1A) at similar to 14.5ka, recorded at widely distributed sites as a sea level rise of similar to 10-20m in less than 500years, is uncertain. A recent ice modeling study of North America and Greenland has suggested that the collapse of an ice saddle between the Laurentide and Cordilleran ice sheets, with a eustatic sea level equivalent (ESLE) of similar to 10m, may have been the dominant contributor to MWP-1A. To test this suggestion, we predict gravitationally self-consistent sea level changes from the Last Glacial Maximum to the present day associated with the ice model. We find that a combination of the saddle collapse scenario and melting outside North America and Greenland with an ESLE of similar to 3m yields sea level changes across MWP-1A that are consistent with far-field sea level records at Barbados, Tahiti, and Sunda Shelf.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:41401419
- FAS Scholarly Articles