High‐resolution surface velocities and strain for Anatolia from Sentinel‐1 InSAR and GNSS data

Measurements of present‐day surface deformation are essential for the assessment of long‐term seismic hazard. The European Space Agency's Sentinel‐1 satellites enable global, high‐resolution observation of crustal motion from Interferometric Synthetic Aperture Radar (InSAR). We have developed a...

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Detalles Bibliográficos
Autores: Weiss, Jonathan R., Walters, Richard J., Morishita, Yu, Wright, Tim J., Lazecký, Milan, Wang, Hua, Hussain, Ekbal, Hooper, Andrew J., Elliott, John R., Rollins, Chris, Yu, Chen, González, Pablo J., Spaans, Karsten, Li, Zhenhong, Parsons, Barry
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/218925
Acceso en línea:http://hdl.handle.net/10261/218925
Access Level:acceso abierto
Palabra clave:Surface velocities
High‐resolution
Anatolia
Sentinel
‐1 InSAR
GNSS
ddc:550
Descripción
Sumario:Measurements of present‐day surface deformation are essential for the assessment of long‐term seismic hazard. The European Space Agency's Sentinel‐1 satellites enable global, high‐resolution observation of crustal motion from Interferometric Synthetic Aperture Radar (InSAR). We have developed automated InSAR processing systems that exploit the first ~5 years of Sentinel‐1 data to measure surface motions for the ~800,000 km2 Anatolian region. Our new 3D velocity and strain rate fields illuminate deformation patterns dominated by westward motion of Anatolia relative to Eurasia, localized strain accumulation along the North and East Anatolian Faults, and rapid vertical signals associated with anthropogenic activities and to a lesser extent extension across the grabens of western Anatolia. We show that automatically processed Sentinel‐1 InSAR data can characterize details of the velocity and strain rate fields with high resolution and accuracy over large regions. These results are important for assessing the relationship between strain accumulation and release in earthquakes.

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