GPS-derived estimates of crustal deformation in the central and north Ionian Sea, Greece: 3-yr results from NOANET continuous network data
2012; Elsevier BV; Volume: 67; Linguagem: Inglês
10.1016/j.jog.2012.05.010
ISSN1879-1670
AutoresAthanassios Ganas, Aggeliki Marinou, D. Anastasiou, D. Paradissis, K. Papazissi, P. Tzavaras, Γ. Δρακάτος,
Tópico(s)Geological and Geochemical Analysis
ResumoIonian Sea (western Greece) is a plate-boundary region of high seismicity and complex tectonics, dominated by frequent earthquake activity along the right-lateral Cephalonia transform fault. We present an analysis of 30-s GPS data from five (5) continuous stations of NOANET (NOA permanent GPS network) spanning the period 2007–2010. Our results show N-S crustal shortening onshore Lefkada island of the order of 2–3 mm/yr which is probably related to increased locking on the offshore Lefkada fault. We also calculated a large difference (1:3) in the principal strain rate amplitude between extension and shortening for the central Ionian Sea.
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