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| Titel |
Gravity Change in the Fennoscandian Uplift Area Observed by Absolute Gravimetry |
| VerfasserIn |
L. Timmen, O. Gitlein, V. Klemann, D. Wolf |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250020461
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| Zusammenfassung |
| The Nordic countries Norway, Sweden, Finland and Denmark are a key study region for the research of glacial isostasy. In addition, it offers a unique opportunity for absolute gravimetry to show its capability as a geodetic tool for geophysical research.
Within a multi-national cooperation, annual absolute gravity measurements have been performed in Fennoscandia by IfE since 2003. For the Hannover gravimeter FG5-220, an overall accuracy of ±30 nm/s² is indicated for a single station determination. First results of linear gravity changes are derived for 11 stations in the central and southern part of the uplift area. Comparing with the predicted rates of a glacial rebound modelling, the gravity trends of the absolute measurements differ by 20% (r.m.s. discrepancy) from the uplift model. The mean difference between observed and predicted rates is -0.6 nm/s² per year only. |
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