A Combined Velocity Field of the Mediterranean Region

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.
Document type :
Journal articles
Complete list of metadatas

https://hal-univ-lyon1.archives-ouvertes.fr/hal-02329500
Contributor : Depot 2 Lyon 1 <>
Submitted on : Wednesday, October 23, 2019 - 3:49:04 PM
Last modification on : Tuesday, November 19, 2019 - 2:38:59 AM

Links full text

Identifiers

Collections

Citation

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⟩

Share

Metrics

Record views

20