Publication Date:
2022-07-05
Description:
In this work we present and discuss new geodetic velocity and strain-rate fields for the
Euro-Mediterranean region obtained from the analysis of continuous GNSS stations. We
describe the procedures and methods adopted to analyze raw GPS observations from
〉4000 stations operating in the Euro-Mediterranean, Eurasian and African regions. The
goal of this massive analysis is the monitoring of Earth’s crust deformation in response to
tectonic processes, including plate- and micro-plate kinematics, geodynamics, active
tectonics, earthquake-cycle, but also the study of a wide range of geophysical processes,
natural and anthropogenic subsidence, sea-level changes, and hydrology. We describe
the computational infrastructure, the methods and procedures adopted to obtain a threedimensional
GPS velocity field, which is used to obtain spatial velocity gradients and
horizontal strain-rates. We then focus on the Euro-Mediterranean region, where we
discuss the horizontal and vertical velocities, and spatial velocity gradients, obtained
from stations that have time-series lengths longer than 6 and 7 years, which are found to
be the minimum spans to provide stable and reliable velocity estimates in the horizontal
and vertical components, respectively. We compute the horizontal strain-rate field and
discuss deformation patterns and kinematics along the major seismogenic belts of the
Nubia-Eurasia plate boundary zone in the Mediterranean region. The distribution and
density of continuous GNSS stations in our geodetic solution allow us to estimate the
strain-rate field at a spatial scale of ~27 km over a large part of southern Europe, with the
exclusion of the Dinaric mountains and Balkans.
Description:
The GNSS data analysis center described in this work is
realized and maintained by different founding resources
and projects, including EPOS-MIUR, the Department of
Italian Civil Protection and Istituto Nazionale di Geofisica
e Vulcanologia agreement (Annex A), Programma Operativo
Nazionale (PON) GRINT, ILG Minerbio, MISE DGISSEGINGV
2020 agreement, Med-MFC. FP is supported by the
project MUSE, funded by the Istituto Nazionale di Geofisica e
Vulcanologia (INGV), within which the re-analysis discussed
in this work has been developed.
Description:
Published
Description:
907897
Description:
2T. Deformazione crostale attiva
Description:
JCR Journal
Keywords:
GNSS data processing
;
time series analysis
;
horizontal strain rates
;
vertical ground velocities
;
Euro- Mediterranean region
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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