Lateral asthenospheric viscosity variations and postglacial rebound: a case study for the Barents Sea

Details Lateral asthenospheric viscosity variations and postglacial rebound: a case study for the Barents Sea Lateral asthenospheric viscosity variations and postglacial rebound: a case study for the Barents Sea

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.1963k&link_type=abstract

Geophysical Research Letters, Volume 25, Issue 11, p. 1963-1966

Physics

Geophysics

20

Geodesy And Gravity: Rheology Of The Lithosphere And Mantle, Geodesy And Gravity: Earth'S Interior-Dynamics, Mathematical Geophysics: Modeling

Scientific paper

The effect of lateral asthenospheric viscosity variations on observable signatures related to postglacial rebound in the Barents Sea is studied. Using a finite-element approach to discretize the problem, a comparison between a laterally homogeneous reference earth model and a laterally heterogeneous earth model is performed. The results indicate that a change in asthenospheric viscosity of about three orders of magnitude influences predictions of land uplift up to 10-20 m, present-day velocities up to 0.5-1.5 mm/a, and present-day gravity anomalies up to 0.4-0.8 mGal in the northwestern part of the Barents Sea region.

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