Coseismic deformation field of the Mw 7.3 12 November 2017 Sarpol-e Zahab (Iran) earthquake: A decoupling horizon in the Northern Zagros Mountains inferred from InSAR observations

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dc.identifier.uri http://dx.doi.org/10.15488/4064
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4098
dc.contributor.author Vajedian, Sanaz
dc.contributor.author Motagh, Mahdi
dc.contributor.author Mousavi, Zahra
dc.contributor.author Motaghi, Khalil
dc.contributor.author Fielding, Eric J.
dc.contributor.author Akbari, Bahman
dc.contributor.author Wetzel, Hans-Ulrich
dc.contributor.author Darabi, Aliakbar
dc.date.accessioned 2018-11-30T10:09:37Z
dc.date.available 2018-11-30T10:09:37Z
dc.date.issued 2018
dc.identifier.citation Vajedian, S.; Motagh, M.; Mousavi, Z.; Motaghi, K.; Fielding, E.J. et al.: Coseismic deformation field of the Mw 7.3 12 November 2017 Sarpol-e Zahab (Iran) earthquake: A decoupling horizon in the Northern Zagros Mountains inferred from InSAR observations. In: Remote Sensing 10 (2018), Nr. 10, 1589. DOI: https://doi.org/10.3390/rs10101589
dc.description.abstract The study of crustal deformation fields caused by earthquakes is important for a better understanding of seismic hazard and growth of geological structures in tectonically active areas. In this study, we present, using interferometric measurements constructed from Sentinel-1 Terrain Observation with Progressive Scan (TOPS) data and ALOS-2 ScanSAR, coseismic deformation and source model of the Mw 7.3, 12 November 2017 earthquake that hit northwest of the Zagros Mountains in the region between Iran-Iraq border. This was one of the strongest seismic events to hit this region in the past century, and it resulted in an uplift area of about 3500 km2 between the High Zagros Fault (HZF) and Mountain Front Fault (MFF) with a maximum amount of 70 cm south of Miringe fault. A subsidence over an area of 1200 km2 with a maximum amount of 35 cm occurred near Vanisar village at the hanging wall of the HZF. Bayesian inversion of interferometric synthetic aperture radar (InSAR) observations suggests a source model at a depth between 14 and 20 km that is consistent with the existence of a decoupling horizon southwest edge of the northern portion of the Zagros Mountains near the MFF. Moreover, we present evidence for a number of coseismically induced rockslides and landslides, the majority of them which occurred along or close to pre-existing faults, causing decorrelation in differential interferograms. Exploiting the offset-tracking technique, we estimated surface motion by up to 34 and 10 m in horizontal and vertical directions, respectively, due to lateral spreading on a big coseismic-induced landslide near Mela-Kabod. Field observations also revealed several zones of en echelon fractures and crack zones developed along a pre-existing fault passing through Qasr-e Shirin City, which exhibited secondary surface slip by up to 14 cm along its strike. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Remote Sensing 10 (2018), Nr. 10
dc.rights CC BY 4.0
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Burst overlap interferometry eng
dc.subject InSAR geodesy eng
dc.subject Landslide eng
dc.subject Offset tracking eng
dc.subject Sarpol-e Zahab earthquake eng
dc.subject Triggered slip eng
dc.subject Deformation eng
dc.subject Faulting eng
dc.subject Interferometry eng
dc.subject Landforms eng
dc.subject Landslides eng
dc.subject Synthetic aperture radar eng
dc.subject Coseismic deformation eng
dc.subject Crustal deformations eng
dc.subject Differential interferograms eng
dc.subject Geological structures eng
dc.subject Interferometric measurement eng
dc.subject Interferometric synthetic aperture radars eng
dc.subject Offset tracking eng
dc.subject Triggered slip eng
dc.subject Earthquakes eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.subject.ddc 551 | Geologie, Hydrologie, Meteorologie ger
dc.title Coseismic deformation field of the Mw 7.3 12 November 2017 Sarpol-e Zahab (Iran) earthquake: A decoupling horizon in the Northern Zagros Mountains inferred from InSAR observations
dc.type article
dc.type Text
dc.relation.issn 2072-4292
dc.relation.doi https://doi.org/10.3390/rs10101589
dc.bibliographicCitation.issue 10
dc.bibliographicCitation.volume 10
dc.bibliographicCitation.firstPage 1589
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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