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Determination of sub-lithospheric stress due to mantle convection using GOCE gradiometric data over Iran
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avdelningen för data-, elektro- och lantmäteriteknik.ORCID-id: 0000-0003-0067-8631
Islamic Azad University, Qazvin Branch Iran.
2015 (engelsk)Inngår i: Journal of Applied Geophysics, ISSN 0926-9851, E-ISSN 1879-1859, Vol. 122, s. 11-17, artikkel-id 2807Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Sub-lithospheric stress due to mantle convection can be determined from gravimetric data based on Runcorn’s theory. In this paper, the satellite gradiometric data of the recent European satellite mission, the Gravity field and steady-state Ocean Circulation Explorer (GOCE) is used to determine the sub- lithospheric stress locally in Iran. The method of S function (SF) with numerical differentiation is developed further and an integral equation connecting satellite gradiometric data to SF is presented. The integral equation will be used to invert the real gradiometric data of GOCE to recover the SF. Later on, the sub-lithospheric shear stresses, which are the northwards and eastwards derivatives of the SF, are computed numerically. Our numerical results show that the mean square error of the recovered SF is smaller than the values of the SF meaning that the recovery process is successful. Also, the recovered stress has a good agreement with the tectonic boundaries and active seismic points of the world stress map (WSM) database. This stress reaches amplitude of 100 MPa in the territory.

sted, utgiver, år, opplag, sider
2015. Vol. 122, s. 11-17, artikkel-id 2807
Emneord [en]
Active seismic points, integral inversion, numerical differentiation, stress vectors, S function
HSV kategori
Forskningsprogram
TEKNIK
Identifikatorer
URN: urn:nbn:se:hv:diva-7894DOI: 10.1016/j.jappgeo.2015.08.001ISI: 000364268900002Scopus ID: 2-s2.0-84941280729OAI: oai:DiVA.org:hv-7894DiVA, id: diva2:845853
Tilgjengelig fra: 2015-08-13 Laget: 2015-08-13 Sist oppdatert: 2019-05-14bibliografisk kontrollert

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