Recent Deformations of New Zealand GNSS Permanent Network Caused by 2016 Mw7.8 Kaikoura Earthquake
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This paper deals with generation of post-seismic velocity and deformation fields of the GNSS network of New Zealand, due to the Kaikoura earthquake (Mw7.8), on November 13th, 2016. The PPP model was performed to estimate daily coordinates, during one year (November 2016–November 2017), of 138 stations of GeoNet with RTKLIB 2.4.2 software (University of Marine Sciences and Technology of Tokyo). The Deformation analysis software (Research Institute of Geodesy, Topography and Cartography, Czech Republic) was used for obtaining results in terms of displacements and deformations (strain tensors, total dilatation, and shears). This software, as a web application, uses Web Map Services (WMS) as its graphic representation of estimated results in GIS format. The results show clearly the post-seismic activity of New Zealand, particularly, near the epicenter and at frontier zone between South and North islands.
KeywordsDeformation analysis Post-seismic activity PPP GNSS Velocity field
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