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Global Sub-Crustal Stress Field
Wuhan University, Sch Geodesy & Geomat, Key Lab Geospace Environm & Geodesy, Wuhan 430072, Peoples R China.
University West, Department of Engineering Science, Division of Natural Sciences and Electrical and Surveying Engineering.ORCID iD: 0000-0003-0067-8631
2016 (English)In: Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment / [ed] Raju, N. Janardhana, Springer International Publishing , 2016, 461-465 p.Chapter in book (Other academic)Text
Abstract [en]

The sub-crustal stress has been traditionally computed using the Runcorn's formulae. This method allows computing the stress field only with a very limited spectral resolution. To overcome this problem, we apply a new method of computing the sub-crustal stress components based on utilizing the stress function with a subsequent numerical differentiation. This method increases the (degree-dependent) convergence domain of the asymptotically-convergent series and consequently allows evaluating the stress components to a higher spectral resolution compatible with currently available global crustal models. This method also facilitates the variable Moho geometry, instead of assuming only a constant Moho depth in the Runcorn's formulae. The crustal thickness and the sub-crustal stress are then determined directly from gravity and (seismic) crustal structure models. The numerical result reveals that the largest intensity of the sub-crustal stress occurs mainly along seismically active convergent tectonic plate boundaries, particularly along oceanic subduction zones and continent-to-continent collision zones.

Place, publisher, year, edition, pages
Springer International Publishing , 2016. 461-465 p.
Keyword [en]
Crust, Gravity; Stress, Moho
National Category
Geophysics
Identifiers
URN: urn:nbn:se:hv:diva-8772DOI: 10.1007/978-3-319-18663-4_70ISBN: 978-3-319-18662-7OAI: oai:DiVA.org:hv-8772DiVA: diva2:877934
Available from: 2015-12-08 Created: 2015-12-08 Last updated: 2016-11-21Bibliographically approved

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Eshagh, Mehdi
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