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A gravimetric method to determine Horizontal Stress field due to flow in mantle in Fennoscandia
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management, Land management, GIS. (Geodesy)ORCID iD: 0000-0003-0910-0596
2018 (English)In: Geosciences Journal, ISSN 1226-4806Article in journal (Refereed) Accepted
Abstract [en]

Mass changes and flow in the Earth's mantle causes the Earth's crust not only to movevertically, 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 theEarth's mantle and its temporal changes caused by geodynamical movements likemantle convection in Fennoscandia. The flow in the mantle is inferred from tectonicsand convection currents carrying heat from the interior of the Earth to the crust. Theresult 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 itschange using forward modelling and the Earth's viscoelastic models. We show that thedetermined horizontal stress using a gravimetric method is consistent with tectonicsand 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
2018.
National Category
Geophysics
Identifiers
URN: urn:nbn:se:hig:diva-27317OAI: oai:DiVA.org:hig-27317DiVA, id: diva2:1222947
Available from: 2018-06-24 Created: 2018-06-24 Last updated: 2018-06-25Bibliographically approved

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Bagherbandi, Mohammad

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  • nn-NB
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  • Other locale
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Output format
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  • asciidoc
  • rtf