Publication Date:
2017-04-04
Description:
To investigate the kinematics of the Adriatic region we integrate continuous and
episodic GPS measurements and ${M_w} 〉 4.5$ earthquake slip vectors
selected from the Regional Centroid Moment Tensor (RCMT) catalogue.
Coherent motion of GPS sites in the Po Valley, in Apulia and in the Hyblean Plateau
allows us to estimate geodetically constrained angular velocities for these regions.
The predictions of the GPS-inferred angular velocities are
compared with the earthquake slip vectors, showing that the seismically-expressed
deformation at the microplate boundaries is consistent with the observed geodetic motion.
The remarkable consistency between geodetic, seismological and geological evidence of
active tectonics, suggests that active deformation in the Central Adriatic is controlled
by the relative motion between the Adria and Apulia microplates.
The microplates angular rotation rates are then compared with the rotation rates
calculated with a simple block model supporting the hypotheses (1) that Apulia forms a single
microplate with the Ionian Sea and possibly with the Hyblean region and (2) that
Adria and Apulia rotate in such a way as to accommodate the Eurasia-Nubia relative motion.
We suggest that the present-day microplate configuration follows a recent
fragmentation of the Adriatic promontory that during the Neogene rigidly
transferred the Africa motion to the orogenic belts that now surround the
Adriatic region.
Description:
Published
Description:
B12413
Description:
3.2. Tettonica attiva
Description:
JCR Journal
Description:
reserved
Keywords:
Adria
;
GPS
;
04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
