A geodetic study of the 23 October 2011 Van, Turkey earthquake

Altiner, Yüksel; Söhne, W.; Güney, Caner; Perlt, J.; Wang, Rongjiang; Muzli, Muzli

doi:10.1016/j.tecto.2012.12.005

Cited by 30 publications

(16 citation statements)

References 33 publications

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“…The RMS of 3.9 mm for horizontal components from Model A drops to 2.6 mm for those from Model E, while the RMS of 5.0 mm for vertical components drops to 4.9 mm for Model E. The correlation between simulated and observed horizontal components exceeds 0.96 for Model E, against 0.86 for Model A. There is a discrepancy between GPS measurements from (Altiner et al, 2013) and those posted on the Geohazard Supersite (http://supersites.earthobservations.org/van.php), possibly due to different strategies used in GPS data processing. For instance, Altiner et al (2013) give a south-north displacement at the MURA station of ~34.02 mm (Altiner et al, 2013), whilst the GEO-Supersite provides a value of 54.5±3 mm .…”

Section: Effects Of Layered Earth Model On the Variable Slip Modelmentioning

confidence: 80%

“…Several papers have investigated the coseismic deformation, focal mechanisms and aftershocks of this event (Altiner et al, 2013;Elliott et al, 2013;Fielding et al, 2013;Irmak et al, 2012;Moro et al, 2014;Utkucu, 2013;Zahradník and Sokos, 2014). The mechanisms of the mainshock determined from geodetic observations and seismic waveforms are generally consistent.…”

Section: Introductionmentioning

confidence: 89%

“…Eleven GPS coseismic measurements from a previous study (Altiner et al, 2013) are used for model validation. Using 1-second continuous GPS recording from the CORS-TR network, coseismic displacements were determined in the Precise Point Positioning mode with the Bernese GNSS software (Altiner et al, 2013).…”

Section: Data Sourcesmentioning

confidence: 99%

“…Using 1-second continuous GPS recording from the CORS-TR network, coseismic displacements were determined in the Precise Point Positioning mode with the Bernese GNSS software (Altiner et al, 2013). The maximum horizontal coseismic displacements of -16.95 mm in E-W direction and -34.2 mm in the N-S direction were found at the MURA GPS station, approximately 60 km northeast of the epicentre.…”

Section: Data Sourcesmentioning

confidence: 99%

“…There is a discrepancy between GPS measurements from (Altiner et al, 2013) and those posted on the Geohazard Supersite (http://supersites.earthobservations.org/van.php), possibly due to different strategies used in GPS data processing. For instance, Altiner et al (2013) give a south-north displacement at the MURA station of ~34.02 mm (Altiner et al, 2013), whilst the GEO-Supersite provides a value of 54.5±3 mm . The vertical components have large uncertainties (Altiner et al, 2013) and are not suitable for verifying slip models.…”

Section: Effects Of Layered Earth Model On the Variable Slip Modelmentioning

confidence: 99%

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Patterns and mechanisms of coseismic and postseismic slips of the 2011 M W 7.1 Van (Turkey) earthquake revealed by multi-platform synthetic aperture radar interferometry

Feng

Hoey

et al. 2014

Tectonophysics

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In this paper, we present several COSMO-SkyMED (CSK), Envisat ASAR and RADARSAT-2 interferograms spanning different time intervals, showing that significant postseismic signals can be observed in the first three days after the mainshock. Using observations that combine coseismic and postseismic signals is shown to significantly underestimate coseismic slip. We hence employed the CSK pair with the minimum postseismic signals to generate one conventional interferogram and one along-track interferogram for further coseismic modelling. Our best-fit coseismic slip model suggests that: (1) this event is associated with a buried NNW dipping fault with a preferable dip angle of 49º and a maximum slip of 6.5 m at a depth of 12 km; and (2) two unequal asperities can be observed, consistent with previous seismic solutions. Significant oblique aseismic slip with predominant left-lateral slip components above the coseismic rupture zone within the first 3 days after the mainshock is also revealed by a postseismic CSK interferogram, indicating that the greatest principal stress axis might have rotated due to a significant stress 1 drop during the coseismic rupture.

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Section: Effects Of Layered Earth Model On the Variable Slip Modelmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 89%

Section: Data Sourcesmentioning

confidence: 99%

Section: Data Sourcesmentioning

confidence: 99%

Section: Effects Of Layered Earth Model On the Variable Slip Modelmentioning

confidence: 99%

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Patterns and mechanisms of coseismic and postseismic slips of the 2011 M W 7.1 Van (Turkey) earthquake revealed by multi-platform synthetic aperture radar interferometry

Feng

Hoey

et al. 2014

Tectonophysics

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Use of CORS Time Series for Geodynamics Applications in Western Sicily (Italy)

Pipitone

Dardanelli

Brutto

et al. 2020

R3 in Geomatics: Research, Results and Review

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Rupture Process of the 23 October 2011 Mw7.1 Van Earthquake in Eastern Turkey by Joint Inversion of Teleseismic, GPS and Strong-Motion Data

Liu

Zheng

Xiong

et al. 2014

Pure Appl. Geophys.

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On October 23, 2011, a strong earthquake (Mw=7.1) struck Van (Eastern Turkey) region and its surrounding areas at 10:41:22 UTC (hereafter referred to as Van earthquake), causing severe damage to the source region. Several studies have been carried out on the focal mechanism, seismic moment, focal depth, and rupture model of this earthquake. However, there are still significant differences in the moment release, focal depth and slip asperities among these models. Since most of these models only used a single dataset to investigate the source parameters, the reliability of these results is still a concern. In order to make clear the uncertainties and provide a reliable detailed rupture model for the main shock, we investigate the rupture process of the Van earthquake by a joint inversion of teleseismic broadband seismograms, near field static GPS displacement records and strong motion data. The inversion results indicate that the main shock is dominated by a thrust slip with a small part of left-lateral strike-slip component below the hypocenter. The rupture initiated at a focal depth of 16 km and propagated to the surface with a relatively low average rupture velocity of ~ 1.8 km/s, suggesting that the major energy of the earthquake could be released in long period band, which is the main reason why the seismic moments inverted by long period or static signals are higher than those obtained by short period data. Most of slip occurred around the hypocenter with the maximum slip of more than 3.3 m, and the associated * Yong Zheng, corresponding author, Email: zhengyong@whigg.ac.cn static stress drop is ~3 MPa. The total seismic moment of the whole fault is 5.76×10 19 N·m, and most energy was released in the first 20 s, which is in the variation range of the released rupture models. The major slip is concentrated in the deeper depth, and extends to the depth around 25 km; meanwhile, the rupture in the ground surface is quite small, which explains why only weak ruptures observed at the surface caused by such a strong earthquake.

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A geodetic study of the 23 October 2011 Van, Turkey earthquake

Cited by 30 publications

References 33 publications

Patterns and mechanisms of coseismic and postseismic slips of the 2011 M W 7.1 Van (Turkey) earthquake revealed by multi-platform synthetic aperture radar interferometry

Patterns and mechanisms of coseismic and postseismic slips of the 2011 M W 7.1 Van (Turkey) earthquake revealed by multi-platform synthetic aperture radar interferometry

Use of CORS Time Series for Geodynamics Applications in Western Sicily (Italy)

Rupture Process of the 23 October 2011 Mw7.1 Van Earthquake in Eastern Turkey by Joint Inversion of Teleseismic, GPS and Strong-Motion Data

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