Multilayered Crustal anisotropy investigation by harmonic fitting to the radial receiver functions in central Alborz.
عنوان دوره: نوزدهمین کنفرانس ژئوفیزیک ایران
کد مقاله : 1579-NIGS
نویسندگان
پژوهشگاه بین المللی زلزله شناسی/تهران
چکیده
Crustal anisotropy beneath 11 permanent seismic stations situated at the northern Iran is investigated based on the sinusoidal harmonic fitting to the P-to-S conversions in radial receiver functions from the Moho and an intracrustal discontinuity. This variations of converted phases in stacked R_RF can be announced by fast polarization direction and time delay. In the multilayered anisotropic media the distinct cosine moveout of the radial component can be distinguished for Ps phase in upper crust. The magnitude of crustal anisotropy is found to range from 0.1 to 0.47. Based on lower layer results, central Alborz is subdivided to eastern a western sections.
کلیدواژه ها
crustal anisotropy؛ Receiver Functions؛ central Alborz؛ upper and lower crust؛ harmonic fitting؛ Stripping
Title
Multilayered Crustal anisotropy investigation by harmonic fitting to the radial receiver functions in central Alborz.
Authors
Mohsen Azqandi
Abstract
Crustal anisotropy beneath 11 permanent seismic stations situated at the northern Iran is investigated based on the sinusoidal harmonic fitting to the P-to-S conversions in radial receiver functions from the Moho and an intracrustal discontinuity. This variations of converted phases in stacked R_RF can be announced by fast polarization direction and time delay. In the multilayered anisotropic media the distinct cosine moveout of the radial component can be distinguished for Ps phase in upper crust. The magnitude of crustal anisotropy is found to range from 0.1 to 0.47. Based on lower layer results, central Alborz is subdivided to eastern a western sections.
Keywords
crustal anisotropy, Receiver Functions, central Alborz, upper and lower crust, harmonic fitting, Stripping