Seismic image of the crustal structure in Kermanshah and Khorramabad region, northwest of Zagros, using teleseismic waves

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KARIMIZADEH SOMAYEH; Afsari Nargaes; TAGHIZADEH FARAHMAND FATANEH

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Journal: JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS Year:2018 | Volume:3 | Issue:2 Page(s): 217-227

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Title

Seismic image of the crustal structure in Kermanshah and Khorramabad region, northwest of Zagros, using teleseismic waves

Author(s)

KARIMIZADEH SOMAYEH | Afsari Nargaes | TAGHIZADEH FARAHMAND FATANEH | Issue Writer Certificate

Keywords

Zagros

P Receiver Function

Moho Discontinuity

Vp/Vs Ratio

Multiples

Abstract

The Zagros fold and thrust belt (ZFTB) is resulted from the collision of the Arabian Plate with the continental crust of Central Iran and is considered as an example of a young continent– continent collision belt. In this study, we have used P Receiver Function technique to determine the crustal thickness and Vp/Vs Ratio in northwest of Zagros. Our dataset includes teleseismic data (with magnitude Mb ≥ 5. 5, epicentral distance  from 30◦ to 95◦ ) that have been recorded at 11 three component short-period and broadband stations of Kermanshah and Khoramabad telemetry seismic networks from 2010 to 2015. First, the differential travel time between the incident P wave and S converted wave (delay time) is used for computation of crustal thickness. Then, we have used the arrival times of crustal Multiples (PpPs, PpSs + PsPs) to determine crustal thickness (H) and Vp/Vs Ratio using Zhu and Kanamori method. Applying this method, the average Moho depth is determined that is 44 km in northwest of Zagros and varies between 36 km and 55 km. In northern part of the region, the average thickness of the crust is about 38 km, and toward the center and south of the region is going to be thicker. The average Vp/Vs Ratio in the crust of northwest of Zagros is about 1. 74 and varies from 1. 66 to 1. 86.

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APA: Copy

KARIMIZADEH, SOMAYEH, Afsari, Nargaes, & TAGHIZADEH FARAHMAND, FATANEH. (2018). Seismic image of the crustal structure in Kermanshah and Khorramabad region, northwest of Zagros, using teleseismic waves. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, 3(2 ), 217-227. SID. https://sid.ir/paper/268607/en

Vancouver: Copy

KARIMIZADEH SOMAYEH, Afsari Nargaes, TAGHIZADEH FARAHMAND FATANEH. Seismic image of the crustal structure in Kermanshah and Khorramabad region, northwest of Zagros, using teleseismic waves. JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS[Internet]. 2018;3(2 ):217-227. Available from: https://sid.ir/paper/268607/en

IEEE: Copy

SOMAYEH KARIMIZADEH, Nargaes Afsari, and FATANEH TAGHIZADEH FARAHMAND, “Seismic image of the crustal structure in Kermanshah and Khorramabad region, northwest of Zagros, using teleseismic waves,” JOURNAL OF RESEARCH ON APPLIED GEOPHYSICS, vol. 3, no. 2 , pp. 217–227, 2018, [Online]. Available: https://sid.ir/paper/268607/en

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