Determination of post-glacial land uplift from the three precise levellings in Finland |
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| Authors: | J Mäkinen V Saaranen |
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| Institution: | (1) Finnish Geodetic Institute, Geodeetinrinne 2, FIN-02430 Masala, Finland Tel.: +358 9 295550; Fax: +358 9 29555200; e-mail: Jaakko.Makinen@fgi.fi, FI |
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| Abstract: | We have calculated vertical velocities and their change in time from three precise levellings in Finland, with central epochs
1902, 1946, and 1986. Models with and without simultaneous determination of heights give the same results for velocities.
Evidence for velocity change in time appears at first sight strong but on closer examination turns out to be inconclusive.
We offer an alternative explanation in terms of levelling errors and estimate them. A new uplift map closely reproduces main
features of earlier maps from partial data, but does not support some details in them.
Received: 27 January 1997/ Accepted: 20 April 1998 |
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| Keywords: | , Deformation analysis,Fennoscandia,Postglacial rebound,Precise levelling |
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