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Mantle Viscosity and Ice-Age Ice Sheet Topography
Abstract
Ice-age paleotopography and mantle viscosity can both be inferred from observations of Earth's response to the most recent deglaciation event of the current ice age. This procedure requires iterative application of a theoretical model of the global process of glacial isostatic adjustment. Results demonstrate that the iterative inversion procedure converges to a paleotopography that is extremely close to that from the ICE-4G model. The accompanying mantle viscosity profile is furthermore shown to reconcile the requirements of aspherical geoid anomalies related to the mantle convection process, thus resolving a fundamental issue concerning mantle rheology. The combined model also explains postglacial sea level histories for the east coast of the United States.
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Cited by
The Laurentide and Innuitian ice sheets during the Last Glacial Maximum
Dyke, A. S., Andrews, J. T., Clark, P. U., England, J. H., Miller, G. H., Shaw, J., & Veillette, J. J. (2002) · Quaternary Science Reviews · doi:10.1016/s0277-3791(01)00095-6 · Cited by 711
Ice sheet sources of sea level rise and freshwater discharge during the last deglaciation
Carlson, A. E., & Clark, P. U. (2012) · Reviews of Geophysics · doi:10.1029/2011rg000371 · Cited by 249
Influence of magmatism on mantle cooling, surface heat flow and Urey ratio
Nakagawa, T., & Tackley, P. J. (2012) · Earth and Planetary Science Letters · doi:10.1016/j.epsl.2012.02.011 · Cited by 81
Muller, V. A. P., Sternai, P., & Sue, C. (2024) · Solid Earth · doi:10.5194/se-15-387-2024 · Cited by 6
Metadata
- Authors
- Peltier, W. R.
- Venue
- Science
- Published
- 1996-09-06
- Volume
- 273
- Issue
- 5280
- Pages
- 1359-1364
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2124995566
- Cited by
- 283
- References
- 0
- FWCI
- 15.59
- Type
- journal article
- Language
- en
- Open access
- closed
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
