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Title3D displacement field retrieved by integrating Sentinel-1 InSAR and GPS data: the 2014 South Napa earthquake
AuthorPolcari, M; Palano, M; Fernandez, J; Samsonov, S V; Stramondo, S; Zerbini, S
SourceEuropean Journal of Remote Sensing vol. 49, issue 1, 2016 p. 1-13, (Open Access)
Alt SeriesNatural Resources Canada, Contribution Series 20170207
PublisherInforma UK Limited
Mediapaper; on-line; digital
File formatpdf
AreaNapa valley; California; United States of America
Lat/Long WENS-123.0000 -122.0000 38.5000 37.0000
Subjectsearthquakes; remote sensing; radar imagery; modelling; deformation; Sentinel-1; interferometry
Illustrationsformulae; location maps; satellite images; graphs; plots
Released2017 02 17
AbstractIn this study the integration of Sentinel-1 InSAR (Interferometric Synthetic Aperture Radar) and GPS (Global Positioning System) data was performed to estimate the three components of the ground deformation field due to the Mw 6.0 earthquake occurred on August 24th, 2014, in the Napa Valley, California, USA. The SAR data were acquired by the Sentinel-1 satellite on August 7th and 31st respectively. In addition, the GPS observations acquired during the whole month of August were analyzed. These data were obtained from the Bay Area Regional Deformation Network, the UNAVCO and the Crustal Dynamics Data Information System online archives. The data integration was realized by using a Bayesian statistical approach searching for the optimal estimation of the three deformation components. The experimental results show large displacements caused by the earthquake characterized by a predominantly NW-SE strike-slip fault mechanism.