Site effect classification based on microtremor data analysis using a concentration–area fractal model

Site effect classification based on microtremor data analysis using a concentration–area fractal model

The aim of this study is to classify the site effect using concentration–area (<i>C</i>–<i>A</i>) fractal model in Meybod city, central Iran, based on microtremor data analysis. Log–log plots of the frequency, amplification and vulnerability index (<i>k</i>−<i&...

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Main Authors: A. Adib, P. Afzal, K. Heydarzadeh
Format: Article
Language:English
Published: Copernicus Publications 2015-01-01
Series:Nonlinear Processes in Geophysics
Online Access:http://www.nonlin-processes-geophys.net/22/53/2015/npg-22-53-2015.pdf
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spelling doaj-9d011f18919f4cd694ced3afd9ea9caf2020-11-24T23:17:02ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462015-01-01221536310.5194/npg-22-53-2015Site effect classification based on microtremor data analysis using a concentration–area fractal modelA. Adib0P. Afzal1K. Heydarzadeh2Department of Mining Engineering, Faculty of Engineering, South Tehran Branch, Islamic Azad University, Tehran, IranCamborne School of Mines, University of Exeter, Penryn, UKZamin Kav Environmental & Geology Research Center, Tehran, IranThe aim of this study is to classify the site effect using concentration–area (<i>C</i>–<i>A</i>) fractal model in Meybod city, central Iran, based on microtremor data analysis. Log–log plots of the frequency, amplification and vulnerability index (<i>k</i>−<i>g</i>) indicate a multifractal nature for the parameters in the area. The results obtained from the <i>C</i>–<i>A</i> fractal modelling reveal that proper soil types are located around the central city. The results derived via the fractal modelling were utilized to improve the Nogoshi and Igarashi (1970, 1971) classification results in the Meybod city. The resulting categories are: (1) hard soil and weak rock with frequency of 6.2 to 8 Hz, (2) stiff soil with frequency of about 4.9 to 6.2 Hz, (3) moderately soft soil with the frequency of 2.4 to 4.9 Hz, and (4) soft soil with the frequency lower than 2.4 Hz.http://www.nonlin-processes-geophys.net/22/53/2015/npg-22-53-2015.pdf
collection DOAJ
language English
format Article
sources DOAJ
author A. Adib
P. Afzal
K. Heydarzadeh
spellingShingle A. Adib
P. Afzal
K. Heydarzadeh
Site effect classification based on microtremor data analysis using a concentration–area fractal model
Nonlinear Processes in Geophysics
author_facet A. Adib
P. Afzal
K. Heydarzadeh
author_sort A. Adib
title Site effect classification based on microtremor data analysis using a concentration–area fractal model
title_short Site effect classification based on microtremor data analysis using a concentration–area fractal model
title_full Site effect classification based on microtremor data analysis using a concentration–area fractal model
title_fullStr Site effect classification based on microtremor data analysis using a concentration–area fractal model
title_full_unstemmed Site effect classification based on microtremor data analysis using a concentration–area fractal model
title_sort site effect classification based on microtremor data analysis using a concentration–area fractal model
publisher Copernicus Publications
series Nonlinear Processes in Geophysics
issn 1023-5809
1607-7946
publishDate 2015-01-01
description The aim of this study is to classify the site effect using concentration–area (<i>C</i>–<i>A</i>) fractal model in Meybod city, central Iran, based on microtremor data analysis. Log–log plots of the frequency, amplification and vulnerability index (<i>k</i>−<i>g</i>) indicate a multifractal nature for the parameters in the area. The results obtained from the <i>C</i>–<i>A</i> fractal modelling reveal that proper soil types are located around the central city. The results derived via the fractal modelling were utilized to improve the Nogoshi and Igarashi (1970, 1971) classification results in the Meybod city. The resulting categories are: (1) hard soil and weak rock with frequency of 6.2 to 8 Hz, (2) stiff soil with frequency of about 4.9 to 6.2 Hz, (3) moderately soft soil with the frequency of 2.4 to 4.9 Hz, and (4) soft soil with the frequency lower than 2.4 Hz.
url http://www.nonlin-processes-geophys.net/22/53/2015/npg-22-53-2015.pdf
work_keys_str_mv AT aadib siteeffectclassificationbasedonmicrotremordataanalysisusingaconcentrationareafractalmodel
AT pafzal siteeffectclassificationbasedonmicrotremordataanalysisusingaconcentrationareafractalmodel
AT kheydarzadeh siteeffectclassificationbasedonmicrotremordataanalysisusingaconcentrationareafractalmodel
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