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  • 1 GeoForschungsZentrum Potsdam, Division 1: Kinematics and Dynamics of the Earth Telegrafenberg, D-14473, Potsdam, Germany
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We present a semi-analytical solution for 2D forward modelling of viscoelastic relaxation in a spherical earth model with a nested axisymmetric craton. The present semi-analytical approach provides a model response against which more general numerical algorithms can be validated.  Numerically, we model the impact of a high-viscosity craton located below the lithosphere in Fennoscandia on surface vertical and horizontal displacements. In agreement with previous results, we show that a high-viscosity region in the upper mantle can influence surface vertical displacements by the order of 10 percent in magnitude. This effect is much greater for surface horizontal displacements and may change completely the pattern of surface movements.

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation
2013
Volumes
per Year
1
Issues
per Year
4
Founder Magyar Tudományos Akadémia
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)