The global pattern of crustal seismic anisotropy inferred from teleseismic converted phases
Final Report Abstract
The initial goal of the project was to apply the methodology of Ps-splitting analysis to a global receiver function data set in order to drive a global map of crustal seismic anisotropy. By starting the project, we have realized that the methodology required much improvements. A main part of the project time was, therefore, allocated to the development and improvement of the methodology. Finally, we were able to provide a global map of crustal anisotropy within the framework of the schedule of the project. We hold the plan to complete our data base and measurements in order to provide the global map of the pattern of crustal anisotropy with a reasonable spatial resolution. We can summarize our main conclusion from the project as follows: 1) the study of crustal anisotropy using Ps-splitting analysis of RF requires very careful precautions to obtain reliable and robust measurements, 2) in addition to a good azimuthal coverage of RF at each individual station, spatial coverage of stations is also very crucial need to investigate the lateral pattern and consistency of measurements, 3) such a broad extent project requires a long term plan to be accomplished.
Publications
- Simultaneous inversion for anisotropic and structural crustal properties by stacking of radial and transverse receiver functions, “EGU General Assembly, Vienna, Austria, April 17–22, 2016
Link F., G. Rümpker, A. Kaviani, and M. Singh
- Depth-dependent seismic anisotropy beneath the Turkish- Anatolian Plateau from SKS and Ps splitting analysis, “EGU General Assembly, Vienna, Austria, April 23-28, 2017
Kaviani, A., G. Rümpker
- (2018), The effect of crustal anisotropy on SKS splitting analysis, synthetic models and real-data observations, Geophys. J. Int., 213 (2), 1426-1447
Latifi, K., Kaviani, A., Rümpker, G., Mahmoodabadi, M., Ghassemi, M.R. & Sadidkhouy, A.
(See online at https://doi.org/10.1093/gji/ggy053) - Complex pattern of seismic anisotropy beneath the Iranian plateau and Zagros, “EGU General Assembly Conference Abstracts, 2019
Kaviani, A, M Mahmoodabadi, G Rümpker
- (2020), Investigating the strength and trend of seismic anisotropy in the western part of Makran subduction zone and southeast of Iran, Phys. Earth Plan. Inter., 298
Rahimzadeh, S., Moradi, A., Kaviani, A.
(See online at https://doi.org/10.1016/j.cub.2017.05.064) - (2020), Simultaneous inversion for crustal thickness and anisotropy by multiphase splitting analysis of receiver functions, Geophys. J. Int.
Link, F., Rümpker, G., Kaviani, A.
(See online at https://doi.org/10.1093/gji/ggaa435) - (2021), Mantle-flow diversion beneath the Iranian plateau induced by Zagros’ lithospheric keel. Scientific Report, 11, 2848
Kaviani, A., Mahmoodabadi, M., Rümpker, G. et al.
(See online at https://doi.org/10.1038/s41598-021-81541-9)
