Abstract
An interpretation of the geoid in and around Scandinavia in terms of crustal depth structure has been made. Correlations as high as 0.92 were found between current models of crustal depth and the geoid for marine areas of Scandinavia. The Fennoscandian land uplift together with its corresponding resultant change of geoid were also found to be highly correlated with crustal depth structure.
Results of these correlations compare favorably with theoretical models based upon large scale isostatic behavior of the lithosphere. These models indicate that the crustal thickness variations of Scandinavia are compensated generally at depths greater than 100 km.
The results indicate that previous attempts to correlate the geoid with the causes of present land uplift have overestimated the remaining isostatic geoid anomaly in Fennoscandia. The application of these results would reduce the isostatic geoid anomaly by as much as 80% for marine areas of Fennoscandia. This may be interpreted as placing the estimated upper mantle viscosities for Fennoscandia closer to 1021 Pa s.
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References
Anderson, A.J.: 1981, “Deep structure of the Fennoscandian lithosphere obtained from Seasat altimetry data”. EOS, 62, p. 844 (abstract).
Anderson, A.J.: 1983, “Space Geodesy, applications to studies of crustal evolution and planetary dynamics”. Terra Cognita, 3, pp. 29–32.
Anderson, A.J.: 1984, “The geoid, crustal structure, and land uplift”. Report No. 23, Dept. of Geodesy, University of Uppsala.
Anderson, A.J. and H.-G. Scherneck: 1981, “The geoid of the Baltic and Gulf of Bothnia obtained from Seasat altimetry data”. Report No. 10, Dept. of Geodesy, University of Uppsala.
Anderson, A.J., Christensen, U. and W. Jacoby (eds): 1984, “Proceedings of the Mantle Convection and Geoid Symposium”. Ann. Geophysicae (in press).
Balling, N.: 1980, “The land uplift in Fennoscandia, gravity field anomalies and isostasy”. In: Earth Rheology, Isostasy, and Eustasy, ed. by N.-A. Mörner, J. Wiley, New York, pp. 297–321.
Bjerhammar, A., Stocki, S. and L. Svensson: 1980, “A geodetic determination of viscosity”. Royal Institute of Technology, Division of Geodesy, Stockholm.
Cathles, L.M.: 1975, The Viscosity of the Earth’s Mantle. Princeton University Press, Princeton.
Ekman, M.: 1983, “Estimation of the remaining land uplift in Fennoscandia and a remark on the mantle viscosity”. Report No. 23, Dept. of Geodesy, University of Uppsala.
Hager, B.H.: 1983, “Global isostatic geoid anomalies for plate and boundary layer models of the lithosphere”. Earth and Planetary Science Letters, 63, pp. 97–109.
Haxby, W.F. and D.L. Turcotte: 1978, “On isostatic geoid anomalies”. J. Geophys. Res., 83, pp. 5473–5478.
Heiskanen, W.A. and F.A. Vening Meinesz: 1958, The Earth and Its Gravity Field. McGraw-Hill, New York.
Honkasalo, T.: 1964, “On the use of gravity measurements for the investigation of the land upheaval in Fennoscandia”. Fennia, 89, pp. 2123.
Kakkuri, J.: 1984, “A study on Fennoscandian land uplift”. Geodetic Institute, Helsinki.
Lambeck, K.: 1976, “Lateral density anomalies in the upper mantle”. J. Geophys. Res., 81, pp. 6333–6340.
Meissner, R.: 1983, Private communication.
Mörner, N.-A. (ed): 1980, Earth Rheology, Isostasy and Eustasy. J. Wiley, New York.
Niskanen, E.: 1939, “On the upheaval of land in Fennoscandia”. Ann. Acad. Sci. Fennicae A, 53, pp. 1–30.
Peltier, W.R.: 1974, “The impulse response of a Maxwell earth”. Rev. Geophys. Space Physics, 12, pp. 649–669.
Peltier, W.R. and P. Wu: 1982, “Mantle phase transitions and the free air gravity anomalies over Fennoscandia and Laurentia”. Geophysical Research Letters, 9, pp. 731–734.
Rubincam, D.P.: 1984, “Postglacial rebound observed by Lageos and the effective viscosity of the lower mantle”. J. Geophys. Res. (in press).
Sandwell, D. and G. Schubert: 1980, “Geoid height versus age for symmetric spreading ridges”. J. Geophys. Res., 85, pp. 7235–7241.
Sjöberg, L.: 1980, “The Fennoscandian land uplift spectrum and its correlation with gravity”. IAG General Assembly, Hamburg (preprint).
Svensson, L.: 1980, “Viscosity of the mantle from uplift rates and geoidal heights”. Royal Institute of Technology, Division of Geodesy, Stockholm.
Tscherning, C.C.: 1983, “Determination of a quasi geoid for the Nordic countries from heterogeneous data using collocation”. In: Proc. Figure of the Moon and Planets, ed. by P. Holota, Prague.
Vening Meinesz, F.A.: 1937, “The determination of the earth’s plasticity from post-glacial uplift of Scandinavia: Isostatic adjustment”. Proc. K. Ned. Akad. Wet., Ser. B, 40, pp. 654–665.
Wu, P. and W.R. Peltier: 1983, “Glacial isostatic adjustment and the free air gravity anomaly as a constraint on deep mantle viscosity”. Geophys. J. R. Astr. Soc., 74, pp. 377–449.
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Anderson, A.J. (1984). Geophysical Interpretation of Features in the Marine Geoid of Fennoscandia. In: Seeber, G., Apel, J.R. (eds) Geodetic Features of the Ocean Surface and their Implications. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1673-4_14
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DOI: https://doi.org/10.1007/978-94-017-1673-4_14
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