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A New Empirical Ground‐Motion Model for Iran

2019; Seismological Society of America; Volume: 109; Issue: 2 Linguagem: Inglês

10.1785/0120180139

1943-3573

Zoya Farajpour, Shahram Pezeshk, Mehdi Zaré,

Seismic Waves and Analysis

Research Article| February 19, 2019 A New Empirical Ground‐Motion Model for Iran Z. Farajpour; Z. Farajpour aInternational Institute of Earthquake Engineering and Seismology, Tehran, Iran, zoya.farajpour@gmail.com, mehdi.zare.iran@gmail.comcAlso at The University of Memphis, Department of Civil Engineering, Memphis, Tennessee. Search for other works by this author on: GSW Google Scholar S. Pezeshk; S. Pezeshk bDepartment of Civil Engineering, The University of Memphis, Memphis, Tennessee, spezeshk@memphis.edu Search for other works by this author on: GSW Google Scholar M. Zare M. Zare aInternational Institute of Earthquake Engineering and Seismology, Tehran, Iran, zoya.farajpour@gmail.com, mehdi.zare.iran@gmail.com Search for other works by this author on: GSW Google Scholar Author and Article Information Z. Farajpour aInternational Institute of Earthquake Engineering and Seismology, Tehran, Iran, zoya.farajpour@gmail.com, mehdi.zare.iran@gmail.comcAlso at The University of Memphis, Department of Civil Engineering, Memphis, Tennessee. S. Pezeshk bDepartment of Civil Engineering, The University of Memphis, Memphis, Tennessee, spezeshk@memphis.edu M. Zare aInternational Institute of Earthquake Engineering and Seismology, Tehran, Iran, zoya.farajpour@gmail.com, mehdi.zare.iran@gmail.com Publisher: Seismological Society of America First Online: 19 Feb 2019 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2019) 109 (2): 732–744. https://doi.org/10.1785/0120180139 Article history First Online: 19 Feb 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Z. Farajpour, S. Pezeshk, M. Zare; A New Empirical Ground‐Motion Model for Iran. Bulletin of the Seismological Society of America 2019;; 109 (2): 732–744. doi: https://doi.org/10.1785/0120180139 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract In this study, we developed a new ground‐motion model (GMM) for the 5% damped horizontal spectral accelerations using a newly developed database of strong‐motion records for Iran. The newly developed GMM includes peak ground acceleration and 5% damped elastic pseudospectral acceleration ordinates of 0.01 s≤T≤4.0 s⁠. We used a database containing 1356 records from 208 events up to 2013, with the moment magnitude range of 4.8≤M≤7.5⁠, and the rupture distances or closest distance to the rupture plane RRUP up to 400 km. The selected database includes a variety of fault mechanisms, for example, strike slip, normal, and reverse. We used Akaike and Bayesian information to determine the validity of the chosen regression model. We introduced random‐effect coefficients in our mixed‐effect regression model to capture the regional variations among Zagros, Alborz–Azarbaijan, Kope Dagh, and central east Iran and found no statistical variations among these regions. As part of the developed GMMs, we included the nonlinear site effect using VS30 (average shear‐wave velocity in the upper 30 m of soil profile). Distribution of residuals obtained considering between‐event, site‐to‐site, and event‐station showed no discernable trends for the developed GMM. Furthermore, our proposed model is compared with Kale et al. (2015), which has been a recent and well‐established new generation model for Iran and Turkey. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.