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Journal Articles Annals of Geophysics Year : 2017

A Combined Velocity Field of the Mediterranean Region

Roberto Devoti
  • Function : Author
Nicola d'Agostino
Enrico Serpelloni
Grazia Pietrantonio
  • Function : Author
Federica Riguzzi
  • Function : Author
Antonio Avallone
  • Function : Author
Adriano Cavaliere
  • Function : Author
Daniele Cheloni
  • Function : Author
Gianpaolo Cecere
  • Function : Author
Ciriaco d'Ambrosio
  • Function : Author
Luigi Falco
  • Function : Author
Giulio Selvaggi
  • Function : Author
Alessandra Esposito
  • Function : Author
Vincenzo Sepe
  • Function : Author
Alessandro Galvani
  • Function : Author
Marco Anzidei
  • Function : Author

Abstract

We present a full 3-D velocity field of the Earth's surface in the Euro-Mediterranean area obtained from a combination of three different velocity solutions computed at the Centro Nazionale Terremoti (CNT) of the Istituto Nazionale di Geofisica e Vulcanologia (INGV). All the publicly available GPS data since 1993, have been fully reprocessed by three different software tools and the final velocity field is estimated combining three independent velocity solutions in a least squares sense. The input velocity solutions are treated as stochastic samples of the true velocity field by loosening the reference frame constraints in the associated variance-covariance matrix. The proposed approach allows for a fast and efficient combination of multi velocity solutions, taking into account the full network covariance, if available. The velocity map for the Euro-Mediterranean region will be updated and released regularly on the web portal of the National GPS Network (http://ring.gm.ingv.it) and made available to the scientific community. Here we show and discuss the data analysis and the combination schemes, and the results of the combined velocity field.
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hal-02329500 , version 1 (25-11-2021)

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Roberto Devoti, Nicola d'Agostino, Enrico Serpelloni, Grazia Pietrantonio, Federica Riguzzi, et al.. A Combined Velocity Field of the Mediterranean Region. Annals of Geophysics, 2017, 60 (2), ⟨10.4401/ag-7059⟩. ⟨hal-02329500⟩
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