Abstract
SUMMARY In this paper we evaluate changes in the geomagnetic field due to the piezomagnetic effect produced by a stress field of dilatation sources represented by numerical solutions in a non-uniform elastic medium. In a previous work on piezomagnetic modelling a uniform elastic medium was assumed, but in this study we deal with a model of the Earth's crust which consists of a stratified structure. We used the mathematical expressions of the Thomson–Haskell propagation matrix technique and estimated the displacement and strain components for the source type mentioned above. The aim of this study is to evaluate how the piezomagnetic changes are affected by a non-uniform elastic medium. We carried out some case studies to evaluate the piezomagnetic effect for a simple two-layer model and investigated the influence of two related variables, the depth of the lower boundary of the layer with elastic properties, z1, and the depth of the Curie point isotherm, H0. From this evaluation it turns out that the piezomagnetic effect depends strongly on the depth of the elastic boundary.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
