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A gravimetric method to determine horizontal stress field due to flow in the mantle in Fennoscandia
KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management, Geodesy and Satellite Positioning. Univ Gävle.ORCID iD: 0000-0002-7727-0530
KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management, Geodesy and Satellite Positioning. Univ Gävle.
KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management, Geodesy and Satellite Positioning. Univ Gävle.
2019 (English)In: GEOSCIENCES JOURNAL, ISSN 1226-4806, Vol. 23, no 3, p. 377-389Article in journal (Refereed) Published
Abstract [en]

Mass changes and flow in the Earth's mantle causes the Earth's crust not only to move vertically, but also horizontally and to tilt, and produce a major stress in the lithosphere. Here we use a gravimetric approach to model sub-lithosphere horizontal stress in the Earth's mantle and its temporal changes caused by geodynamical movements like mantle convection in Fennoscandia. The flow in the mantle is inferred from tectonics and convection currents carrying heat from the interior of the Earth to the crust. The result is useful in studying how changes of the stress influence the stability of crust. The outcome of this study is an alternative approach to studying the stress and its change using forward modelling and the Earth's viscoelastic models. We show that the determined horizontal stress using a gravimetric method is consistent with tectonics and seismic activities. In addition, the secular rate of change of the horizontal stress, which is within 95 kPa/year, is larger outside the uplift dome than inside.

Place, publisher, year, edition, pages
GEOLOGICAL SOCIETY KOREA , 2019. Vol. 23, no 3, p. 377-389
Keywords [en]
horizontal stress, mantle convection, mass change, stress field, tectonics
National Category
Geophysics
Identifiers
URN: urn:nbn:se:kth:diva-254006DOI: 10.1007/s12303-018-0046-8ISI: 000469221700002Scopus ID: 2-s2.0-85054552297OAI: oai:DiVA.org:kth-254006DiVA, id: diva2:1342870
Note

QC 20190814

Available from: 2019-08-14 Created: 2019-08-14 Last updated: 2019-08-14Bibliographically approved

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Gido, Nureldin A. A.Bagherbandi, Mohammad

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