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Crustal stress Map of Iran: Insight from seismic and geodetic computations
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Solid Earth Geology.ORCID iD: 0000-0003-1744-7004
Department of Earth Science, University of Bergen, Allegaten 41, 5007 Bergen, Norway.
2014 (English)In: Pure and Applied Geophysics, ISSN 0033-4553, E-ISSN 1420-9136, Vol. 171, no 17, 1219-1236 p.Article in journal (Refereed) Published
Abstract [en]

We used the focal mechanisms of crustal earthquakes (depth <40 km) in the period 1909-2012 and the available GPS velocities, estimated from the data collected between 1999 to 2011, to estimate the magnitude and directions of maximum principal stress and strain rates in Iran. The Pearson product moment correlation was used to find the correlation between the stress field obtained from the focal mechanism stress inversion and that obtained using the seismic and geodetic strain rates. Our assumption is that stresses in a continuum are produced by tectonic forces and the consequent deformation on the crustal scale. Therefore, the direction of the stress and strain (or strain rate) are ideally be the same. Our results show a strong correlation between the directions of the principal components of stress and strain (rate) obtained using the different data/methods.  Using  weighted average analysis, we present a new stress map for Iran.

Place, publisher, year, edition, pages
2014. Vol. 171, no 17, 1219-1236 p.
Keyword [en]
Geodetic strain rate, Seismic strain rate, Stress inversion, Iran, Stress map
National Category
Earth and Related Environmental Sciences
Research subject
Geophysics with specialization in Seismology; Earth Science with specialization in Mineral Chemistry, Petrology and Tectonics
Identifiers
URN: urn:nbn:se:uu:diva-205582DOI: 10.1007/s00024-013-0711-9ISI: 000340480700008OAI: oai:DiVA.org:uu-205582DiVA: diva2:642089
Funder
Swedish Research Council
Available from: 2013-08-20 Created: 2013-08-20 Last updated: 2017-12-06Bibliographically approved

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Nilfouroushan, Faramarz

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