On postglacial sea level—III. Incorporating sediment redistribution
Abstract
We derive a generalized theory for gravitationally self-consistent, static sea level variations on earth models of arbitrary complexity that takes into account the redistribution of sediments. The theory is an extension of previous work that incorporated, into the governing equations, shoreline migration due to local sea level variations and changes in the geometry of grounded, marine-based ice. In addition, we use viscoelastic Love number theory to present a version of the new theory valid for spherically symmetric earth models. The Love number theory accounts for the gravitational, deformational and rotational effects of the sediment redistribution. As a first, illustrative application of the new theory, we compute the perturbation in sea level driven by an idealized pulse of sediment transport into the Gulf of Mexico. We demonstrate that incorporating a gravitationally self-consistent water load in this case significantly improves the accuracy of sea level predictions relative to previous simplified treatments of the sediment redistribution.
Additional Information
© The Authors 2013. Published by Oxford University Press on behalf of The Royal Astronomical Society. Accepted 2013 March 4. Received 2013 March 2; in original form 2012 October 29. First published online: April 5, 2013. We acknowledge the insightful reviews of two anonymous reviewers and the editor Bert Vermeersen, which substantially improved the manuscript. We also acknowledge funding and support from the Canadian Institute for Advanced Research (KLF, JXM), Harvard University (JXM), the Canada Research Chairs program (GAM) and the Natural Sciences and Engineering Research Council of Canada (GAM).Attached Files
Published - Geophys._J._Int.-2013-Dalca-45-60.pdf
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Additional details
- Eprint ID
- 39653
- Resolver ID
- CaltechAUTHORS:20130730-104610297
- Canadian Institute for Advanced Research (CIAR)
- Harvard University
- Canada Research Chairs program
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Created
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2013-07-30Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field