Crustal stress Map of Iran: Insight from seismic and geodetic computations
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
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.
Geodetic strain rate, Seismic strain rate, Stress inversion, Iran, Stress map
Earth and Related Environmental Sciences
Research subject Geophysics with specialization in Seismology; Earth Science with specialization in Mineral Chemistry, Petrology and Tectonics
IdentifiersURN: urn:nbn:se:uu:diva-205582DOI: 10.1007/s00024-013-0711-9ISI: 000340480700008OAI: oai:DiVA.org:uu-205582DiVA: diva2:642089
FunderSwedish Research Council