2020
DOI: 10.1093/gji/ggaa075
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Crustal and uppermost mantle shear wave velocity structure beneath the Middle East from surface wave tomography

Abstract: SUMMARY We have constructed a 3-D shear wave velocity (Vs) model for the crust and uppermost mantle beneath the Middle East using Rayleigh wave records obtained from ambient-noise cross-correlations and regional earthquakes. We combined one decade of data collected from 852 permanent and temporary broad-band stations in the region to calculate group-velocity dispersion curves. A compilation of >54 000 ray paths provides reliable group-velocity measurements for periods between 2 and 150 s.… Show more

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Cited by 82 publications
(69 citation statements)
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References 101 publications
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“…Instead, a priori 3‐D crustal model can be used to calculate the traveltime differences between the 3‐D crustal model and 1‐D reference model and then correct traveltime residuals to remove the crustal effect. Although there are high‐resolution regional crustal models for parts of our study region (e.g., Hammond et al, 2011; Kaviani et al, 2020; Tang et al, 2019), there are few regional models that cover the entire area from northeast Africa to Arabia. Therefore, for consistency we use the CRUST1.0 model (Laske et al, 2013), a global crustal model made from a compilation of various sources of information on a 1° × 1° grid, for the crustal correction.…”
Section: Methodsmentioning
confidence: 99%
“…Instead, a priori 3‐D crustal model can be used to calculate the traveltime differences between the 3‐D crustal model and 1‐D reference model and then correct traveltime residuals to remove the crustal effect. Although there are high‐resolution regional crustal models for parts of our study region (e.g., Hammond et al, 2011; Kaviani et al, 2020; Tang et al, 2019), there are few regional models that cover the entire area from northeast Africa to Arabia. Therefore, for consistency we use the CRUST1.0 model (Laske et al, 2013), a global crustal model made from a compilation of various sources of information on a 1° × 1° grid, for the crustal correction.…”
Section: Methodsmentioning
confidence: 99%
“…Figures 3 and 4 show these stacked and individual moveout corrected receiver functions. Dispersion data for Rayleigh wave group velocity come from the ambient noise tomography of Kaviani et al (2020). The group velocities were measured for the region in the period range of 5–100 s. The group velocity maps were interpolated to obtain a site‐specific dispersion curve.…”
Section: Data Preparationmentioning
confidence: 99%
“…Receiver Function data used in this study are made available online (at https://data.mendeley.com/datasets/8m9ydb3wds/1). Dispersion data are available through Kaviani et al (2020). Continuous data from five of the used stations are broadcasted on real time to the Incorporated Research Institutions for Seismology (IRIS), and they are unrestricted for use by all interested researchers.…”
Section: Data Availability Statementmentioning
confidence: 99%
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“…Therefore the structure appears to be a piece of thick cratonic lithosphere that has been pulled down 4 km below sea level, either by local convective downwelling as Woodside (1976) suggested, or by the negative convective buoyancy transmitted through the lithosphere from the slab beneath the Aegean. Further east Skobeltsyn et al (2014) and Kaviani et al (2020) have used the dispersion of fundamental-mode Rayleigh waves, either from earthquakes or from noise, to produce three dimensional models of the V s structure beneath much of the Middle East. They found low velocities in regions where the lithosphere in Fig.…”
Section: Convective Structuresmentioning
confidence: 99%