Crustal velocity structure in northwest edge of the Central Iran zone

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Mochan Mansoure; NASRABADI AFSANEH; RAHIMI HABIB; SEPAHVAND MOHAMMADREZA

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Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2017 | Volume:2 | Issue:2 Page(s): 89-102

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Title

Crustal velocity structure in northwest edge of the Central Iran zone

Author(s)

Mochan Mansoure | NASRABADI AFSANEH | RAHIMI HABIB | SEPAHVAND MOHAMMADREZA | Issue Writer Certificate

Keywords

Central Iran

Crustal Structure

Receiver Function

Joint Inversion

Abstract

In this study, crustal velocity structure beneath two broadband seismic stations of Iran National Seismic Network (INSN), Ashtian-Arak (ASAO) and Naein (NASN) located in northwest of the Central Iran seimotectonic zone near the Ashtian and Nain cities have been investigated by Joint Inversion of P Receiver Function and of Rayleigh wave phase and group velocity dispersion curves. To determine the Receiver Functions, we have used iterative deconvolution in time domain proposed by Ligorria and Ammon (1999). which is more stable with noisy data in comparison to frequency domain. The fundamental mode Rayleigh wave group and phase velocities dispersion curves have been provided by the study of Rahimi et al. (2014) on the structure of crust and upper mantle of the Iranian Plateau for the period interval of 10-100 sec. The result of this study suggests that Moho discontinuity depth beneath Ashtian-Arak station (ASAO is 50 ± 2 km and beneath Naein station (NASN), it is 56 ± 2 km. Relative high crustal thickness beneath NASN station in comparison to other regions of Central Iran can be attributed to abut the region to the Sanandaj– Sirjan zone (SSZ) and Urumieh– Dokhtar magmatic assemblage (UDMA). It can also attributed to the existence of thick Magma masses in Urumieh– Dokhtar magmatic assemblage and increase of the density and relative thickness of the area based on the isostasy theory. The average Moho depth in northwest edge of Central Iran is 53 ± 2 km.

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APA: Copy

Mochan, Mansoure, NASRABADI, AFSANEH, RAHIMI, HABIB, & SEPAHVAND, MOHAMMADREZA. (2017). Crustal velocity structure in northwest edge of the Central Iran zone. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, 2(2 ), 89-102. SID. https://sid.ir/paper/268631/en

Vancouver: Copy

Mochan Mansoure, NASRABADI AFSANEH, RAHIMI HABIB, SEPAHVAND MOHAMMADREZA. Crustal velocity structure in northwest edge of the Central Iran zone. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS[Internet]. 2017;2(2 ):89-102. Available from: https://sid.ir/paper/268631/en

IEEE: Copy

Mansoure Mochan, AFSANEH NASRABADI, HABIB RAHIMI, and MOHAMMADREZA SEPAHVAND, “Crustal velocity structure in northwest edge of the Central Iran zone,” JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, vol. 2, no. 2 , pp. 89–102, 2017, [Online]. Available: https://sid.ir/paper/268631/en

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