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Hetland & Hager 2004
Hetland, E.A. and Hager, B.H. (2004). Relationship of geodetic velocities to velocities in the mantle. Geophysical Research Letters 31: doi: 10.1029/2004GL020691. issn: 0094-8276.

We examine the relationship of the velocities at the surface (i.e., geodetic velocities) to the velocities in the upper-most mantle throughout a seismic cycle. We model the rheology of the lower crust and mantle as linear viscoelastic, and vary the relative viscosities between the lower crust and mantle, as well as the distribution of viscosities and secular velocities in the mantle. We find that the geodetic velocities are related to the transient velocities at depth; the strength of the relationship decreases as the contrast between the lower crust and mantle viscosity increases. In these models we find that the geodetic velocities are not related to the secular velocities at depth.

BACKGROUND DATA FILES

Abstract

Keywords
Geodesy and Gravity, Rheology of the lithosphere and mantle, Geodesy and Gravity, Crustal movements—intraplate, Tectonophysics, Dynamics of lithosphere and mantle—general, Tectonophysics, Rheology—crust and lithosphere
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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