GRACE Gravity Data Constrain Ancient Ice Geometries and Continental Dynamics over Laurentia-Reference-Cited by-同舟云学术

GRACE Gravity Data Constrain Ancient Ice Geometries and Continental Dynamics over Laurentia

Published:2007-05-11 Issue:5826 Volume:316 Page:881-883
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Tamisiea M. E.¹²,Mitrovica J. X.¹²,Davis J. L.¹²

Affiliation:

1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Mail Stop 42, Cambridge, MA 02143, USA.

2. Department of Physics, University of Toronto, 60 St. George Street, Toronto, ON M5S 1A7, Canada.

Abstract

The free-air gravity trend over Canada, derived from the Gravity Recovery and Climate Experiment (GRACE) satellite mission, robustly isolates the gravity signal associated with glacial isostatic adjustment (GIA) from the longer–time scale mantle convection process. This trend proves that the ancient Laurentian ice complex was composed of two large domes to the west and east of Hudson Bay, in accord with one of two classes of earlier reconstructions. Moreover, GIA models that reconcile the peak rates contribute ∼25 to ∼45% to the observed static gravity field, which represents an important boundary condition on the buoyancy of the continental tectosphere.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference28 articles.

1. R. I. Walcott, Can. J. Earth Sci.7, 716 (1970).

2. The Viscosity of the Earth's Mantle 1975

3. P. Wu, W. R. Peltier, Geophys. J. R. Astron. Soc.74, 377 (1983).

4. J. X. Mitrovica, W. R. Peltier, J. Geophys. Res.94, 13651 (1989).

5. Complex Shear Wave Velocity Structure Imaged Beneath Africa and Iceland

Cited by 168 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Effects of Andrade and Burgers rheologies on glacial isostatic adjustment modeling in Antarctica;Geodesy and Geodynamics;2024-09

2. Bridging the gap between GRACE and GRACE Follow-On by combining high–low satellite-to-satellite tracking data and satellite laser ranging;Journal of Geodesy;2024-09

3. Glacier and ice sheet flow;Geophysical & Astrophysical Fluid Dynamics;2024-08-28

4. GRACE and GRACE Follow‐On Gravity Observations of Intermediate‐Depth Earthquakes Contrasted With Those of Shallow Events;Journal of Geophysical Research: Solid Earth;2024-02

5. Validation of GRACE/GRACE-FO Solutions Using Caspian Sea Level Change;IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing;2024