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Acta Geodynamica et Geomaterialia

 
Title: TECTONIC CRUSTAL DEFORMATION OF CORINTH GULF, GREECE, BASED ON PRIMARY GEODETIC DATA
 
Authors: Lazos Ilias, Chatzipetros Alexandros, Pavlides Spyros, Pikridas Christos and Bitharis Stylianos
 
DOI: 10.13168/AGG.2020.0030
 
Journal: Acta Geodynamica et Geomaterialia, Vol. 4, No. 4 (200), Prague 2020
 
Full Text: PDF file (3.0 MB)
 
Keywords: active tectonics, triangulation methodology, GPS/GNSS stations, Corinth Gulf, Greece
 
Abstract: The broader Corinth Gulf region is characterized by a notable active tectonic regime, associated with multiple active fault zones. The continuous N–S extensional tectonics of the area is responsible for the roughly E–W trending active normal fault zones, while individual fault segments are associated with seismic events. Satellite geodesy is a qualitative and quantitative means of estimating the tectonically active setting, based on the recorded motions. The study area is monitored by 14 permanent GPS/GNSS stations, collecting primary geodetic data for a 7-year time period (2008-2014). A 30-sec observation rate was performed, resulting in the extraction of the GPS/GNSS velocity values. The primary geodetic data were processed by applying the triangulation methodology, based on the combination of three different GPS/GNSS stations data, which were considered as the triangle vertices. Triangulation methodology led to the construction of 26 different triangles, while for each of them a series of parameters was determined. In particular, the extracted parameters are: a) Maximum Horizontal Extension, b) Total Velocity, c) Maximum Shear Strain and d) Area Strain. The extracted results are expected to approach, qualitatively and quantitatively, the interpretation of the tectonic regime, as well as to determine new, seismic-related, tectonic features.