Strong Ground Motion Simulation of the 2017 Sefid-Sang Earthquake in Khorasan-Razavi, NE Iran
Publish place: Advance Researches in Civil Engineering، Vol: 2، Issue: 1
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ARCE-2-1_006
تاریخ نمایه سازی: 30 فروردین 1399
Abstract:
On April 5, 2017, an earthquake with moment magnitude of 6.1 occurred Sefid-Sang area about 80 km southeast of Mashhad city in Khorasan-e-Razavi province. In this study, to estimate source parameters and rupture characteristics of the earthquake, the Empirical Green Function (EGF) method and the stochastic finite-fault (SFF) technique were used for strong ground motion simulation. Then the observed records and the simulated graphs by these two methods, were compared. To simulate the earthquake by EGF method, an aftershock with moment magnitude of 4.8 was used as the empirical Green function. The size of the main fault caused by the event was about 10 km in length and 8 km in width. The duration of the rupture in this event was about 18 seconds. The estimated fault plane solution shows reverse mechanism with strike-slip component. Strike, dip and rake of causative fault of the earthquake were determined as 311, 55 and 117 degrees. In addition, the stress drop in this event was calculated to be about 8 bars.
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Authors
Hesaneh Mohammadi
PhD Candidate, Geophysics Department, Tehran North Branch, Islamic Azad University, Tehran, Iran
Maryam Sedghi
senior expert in research, Iranian Red Crescent Society (IRCS), Tehran, Iran
Mohammad Reza Gheitanchi
Professor, Institute of Geophysics, University of Tehran, Tehran, Iran
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