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Elastic and isostatic subsidence of the Blåsjø artificial lake, Southern Norway
Author(s) -
Fjeldskaar Willy
Publication year - 1990
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.1990.tb00089.x
Subject(s) - levelling , geology , subsidence , deformation (meteorology) , post glacial rebound , geodesy , seismology , geotechnical engineering , geomorphology , ice sheet , oceanography , structural basin
When a load is applied to the surface of the Earth, there is an immediate elastic deformation followed by a time‐dependent isostatic subsidence. The two processes on the Blåsjø artifical lake, Southern Norway are modelled. The isostatic subsidence turns out to be negligible. A comparison of the modelled elastic deformation and the relative land levelling data gives valuable information about the elastic properties of the Earth's upper layers. The elastic parameters inferred from this study are lower than those from seismic investigations, and more in accordance with laboratory experiments.