the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Crust and upper mantle structures of the Makran subduction zone in south-east Iran by seismic ambient noise tomography
M. Abdetedal
Z. H. Shomali
M. R. Gheitanchi
Abstract. We applied seismic ambient noise surface wave tomography to estimate Rayleigh wave empirical Green's functions from cross-correlations to study crust and uppermost mantle structure beneath the Makran region in south-east Iran. We analysed 12 months of continuous data from January 2009 through January 2010 recorded at broadband seismic stations. We obtained group velocity of the fundamental mode Rayleigh-wave dispersion curves from empirical Green's functions between 10 and 50 s periods by multiple-filter analysis and inverted for Rayleigh wave group velocity maps.
The final results demonstrate significant agreement with known geological and tectonic features. Our tomography maps display low-velocity anomaly with south-western north-eastern trend, comparable with volcanic arc settings of the Makran region, which may be attributable to the geometry of Arabian Plate subducting overriding lithosphere of the Lut block. At short periods (<20 s) there is a pattern of low to high velocity anomaly in northern Makran beneath the Sistan Suture Zone. These results are evidence that surface wave tomography based on cross correlations of long time-series of ambient noise yields higher resolution group speed maps in those area with low level of seismicity or those region with few documented large or moderate earthquake, compare to surface wave tomography based on traditional earthquake-based measurements.
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M. Abdetedal et al.


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RC C2: 'Comments', Anonymous Referee #1, 03 Feb 2014
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AC C237: 'Reply to the referee#1', Mahsa Abdetedal, 10 Apr 2014
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AC C237: 'Reply to the referee#1', Mahsa Abdetedal, 10 Apr 2014
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RC C116: 'Comments to se-2013-57', Anonymous Referee #2, 12 Mar 2014
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AC C247: 'Reply to the referee#2', Mahsa Abdetedal, 10 Apr 2014


-
RC C2: 'Comments', Anonymous Referee #1, 03 Feb 2014
-
AC C237: 'Reply to the referee#1', Mahsa Abdetedal, 10 Apr 2014
-
AC C237: 'Reply to the referee#1', Mahsa Abdetedal, 10 Apr 2014
-
RC C116: 'Comments to se-2013-57', Anonymous Referee #2, 12 Mar 2014
-
AC C247: 'Reply to the referee#2', Mahsa Abdetedal, 10 Apr 2014
M. Abdetedal et al.
M. Abdetedal et al.
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Cited
4 citations as recorded by crossref.
- New insights into the structural model of the Makran subduction zone by fusion of 3D inverted geophysical models S. Nasri et al. 10.1016/j.jseaes.2019.104075
- Moho depth variations and Vp/Vs ratios in the seismotectonic zones of Central Iran, Eastern Iran, and Makran: using a modified Zhu and Kanamori method A. Nasrabadi et al. 10.1007/s10950-019-09837-y
- A geophysical potential field study to image the Makran subduction zone in SE of Iran M. Abedi & A. Bahroudi 10.1016/j.tecto.2016.09.025
- Lithospheric structure of the Eastern Iranian plateau from integrated geophysical modeling: A transect from Makran to the Turan platform V. Entezar-Saadat et al. 10.1016/j.jseaes.2017.02.024