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Acta Geodaetica et Geophysica

, Volume 53, Issue 3, pp 331–345 | Cite as

Probing tectonic processes with space geodesy in the south Carpathians: insights from archive SAR data

  • Eszter Szűcs
  • István BozsóEmail author
  • István János Kovács
  • László Bányai
  • Ágnes Gál
  • Alexandru Szakács
  • Viktor Wesztergom
Original Study

Abstract

The Carpathian bend is amongst the tectonically most active areas in Europe where intraplate subduction triggers sub-crustal earthquakes releasing significant amount of seismic energy in a well-defined seismic zone. To constrain the deep processes by exploiting their linkage to the surface processes an accurate knowledge of surface deformations is required. Detection of small-magnitude tectonic processes with high reliability is a challenge in which the recent space geodetic techniques may bright a breakthrough. In this study we used the archive ENVISAT data set of the European Space Agency to investigate the feasibility limit of detecting crustal deformations in the region of the south Carpathian bend, where past geodetic observations failed to unravel the tectonic processes with high details. Despite the inherent limitations of radar interferometry our results show that coherent velocity field can be estimated with a magnitude of few mm/year. The vertical displacement field suggests subsidence in the Brasov basin which is in agreement with former studies, however radar interferometry can provide a more detailed picture.

Keywords

Geodynamics Vrancea zone Radar interferometry ENVISAT 

Notes

Acknowledgements

ENVISAT images were provided by the European Space Agency under contract No. 30142 Initial assessments of recent surface evolution at the interior of the Carpathian bend area (Romania) using archive SAR acquisitions and geodetic data.

Conlict of interest

The authors declare no conflict of interest.

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Copyright information

© Akadémiai Kiadó 2018

Authors and Affiliations

  1. 1.MTA CSFK Geodetic and Geophysical InstituteSopronHungary
  2. 2.Babeș-Bolyai UniversityCluj-NapocaRomania
  3. 3.Institute of GeodynamicsRomanian AcademyBucharestRomania

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