Tectonic implications of the GPS velocity field in the northern Adriatic region

Grenerczy, G.; Sella, G.; Stein, Seth; Kenyeres, A.

doi:10.1029/2005gl022947

Cited by 173 publications

(146 citation statements)

References 15 publications

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“…The Austrian stations GRMS, SBGZ and GRAZ show eastward velocities, consistent with earlier results (Grenerczy et al, 2000(Grenerczy et al, , 2005D'Agostino et al, 2005;Vrabec et al, 2006;Caporali et al, 2006). Accordingly, stations within, or near, the Pannonian Basin have velocities about 2 mm/year generally oriented to the east (HUTB, DISZ, PENC, STHO, KAME).…”

Section: Adria Dinarides and Pannonian Basinsupporting

confidence: 81%

“…The counter clockwise rotation of the Adriatic microplate around a pole at 46.1 • N 6.9 • E with an angular velocity of 0.35 • /Myr (Caporali and Martin, 2000;Grenerczy et al, 2005) represents a major source for tectonic stress within the Alpine-Pannonian region. The stress regime changed from the Eocene to the present.…”

Section: Stressmentioning

confidence: 99%

“…The independence of Adria from Nubia and Eurasia was tested and proved; F-ratio tests (Stein and Gordon, 1984) were performed for several subsets of sites believed to be on Adria. The two-plate model assumption Adria-Eurasia turned out to be valid for all of the tests; their motion and boundaries were also outlined and suggested further fragmentation (Ward, 1994;Calais et al, 2002;Grenerczy et al, 2005). The strain distribution along the Italian part was further analyzed by Caporali et al (2003) and the extensional strain across the Appenines was determined (Hefty, 2005).…”

Section: Adria Dinarides and Pannonian Basinmentioning

confidence: 99%

“…Convergence with the Nubia plate is mirrored by seismic activity at considerable depth (>100 km) in the Vrancea Seismic Zone, and to some extent by the kinematics of the Adria microplate and the Pannonian Basin. Based on the GPS velocities computed by Grenerczy et al (2000Grenerczy et al ( , 2005 and Grenerczy and Kenyeres (2006), Fodor et al (2005) identified three kinematic units in Central Eastern Europe: a western unit, located east of the Southern Eastern Alps and responding to the updoming in the Tauern Window by lateral escape; a northeastern unit, interacting directly with the northeastern Carpathians, which accommodate the eastward motions; and a southeastern unit interacting with the Southern Carpathians, which contains the Vrancea Seismic Zone. All these three units are characterized by an eastward motion accommodated by sinistral faults to the north and dextral faults to the south.…”

Section: Introductionmentioning

confidence: 99%

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Geokinematics of Central Europe: New insights from the CERGOP-2/Environment Project

Aichhorn

Becker

Feješ³

et al. 2008

Journal of Geodynamics

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The Central European Geodynamics Project CERGOP-2, funded by the European Union from 2003 to 2006 under the 5th Framework Programme, benefited from repeated measurements of the coordinates of epoch and permanent GPS stations of the Central European GPS Reference Network (CEGRN), starting in 1994. Here we report on the results of the systematic processing of available data up to 2005. The analysis has yielded velocities for some 60 sites, covering a variety of Central European tectonic provinces, from the Adria Indenter to the Tauern Window, the Dinarides, the Pannonian Basin, the Vrancea Seismic Zone and the Carpathian Mountains. The estimated velocities define kinematical patterns which outline, with varying spatial resolution depending on the station density and history, the present-day surface kinematics in Central Europe. Horizontal velocities are analyzed after removal from the ITRF2000 estimated velocities of a rigid rotation accounting for the mean motion of Europe: a ∼2.3 mm/year north-south oriented convergence rate between Adria and the Southern Alps that can be considered to be the present-day velocity of the Adria Indenter relative to the European Foreland. An eastward extrusion zone initiates at the Tauern Window. The lateral eastward flow towards the Pannonian Basin exhibits a gentle gradient from 1 to 1.5 mm/year immediately east of the Tauern Window to zero in the Pannonian Basin. This kinematic continuity implies that the Pannonian plate fragment recently suggested by seismic data does not require a specific Eulerian pole. On the southeastern boundary of the Adria microplate, we report a velocity drop from 4 to 4.5 mm/year motion near Matera to ∼1 mm/year north of the Dinarides, in the southwestern part of the Pannonian Basin. A positive velocity gradient as one moves south from West Ukraine across Rumania and Bulgaria is estimated to be 2 mm/year on a scale of 600-800 km, as if the crust were dragged by the counterclockwise rotation along

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Section: Adria Dinarides and Pannonian Basinsupporting

confidence: 81%

Section: Stressmentioning

confidence: 99%

Section: Adria Dinarides and Pannonian Basinmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Geokinematics of Central Europe: New insights from the CERGOP-2/Environment Project

Aichhorn

Becker

Feješ³

et al. 2008

Journal of Geodynamics

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“…The counterclockwise rotation is inferred to be 0.52°/Ma (Calais et al, 2002), 0.9°±0.2°/Ma (Battaglia et al, 2004), and 0.309°± 0.022°/Ma with an average of 0.58°/Ma. Other calculations from Ward (1994) and Grenerczy et al (2005) yielded slightly slower rotation rate of ~0.3°/Ma, but unrealistic Euler pole locations (from a tectonic viewpoint) farther to the northwest and to the west, respectively. In a synthesis of these and related studies, Nocquet and Calais.…”

Section: Present-day Kinematicsmentioning

confidence: 99%

Erosion-driven uplift of the modern Central Alps

et al. 2009

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We present a compilation of data of modern tectono-geomorphic processes in the Central European Alps which suggest that observed rock uplift is a response to climate-driven denudation. This interpretation is predominantly based on the recent quantification of basinaveraged Late Holocene denudation rates that are so similar to the pattern and rates of rock uplift rates as determined by geodetic leveling. Furthermore, a GPS data-based synthesis of Adriatic microplate kinematics suggests that the Central Alps are currently not in a state of active convergence. Finally, we illustrate that the Central Alps have acted as a closed system for Holocene redistribution of sediment in which the peri-Alpine lakes have operated as a sink for the erosional products of the inner Central Alps.While various hypotheses have been put forward to explain Central Alpine rock uplift (e.g. lithospheric forcing by convergence, mantle processes, or ice melting) we show with an elastic model of lithospheric deformation, that the correlation between erosion and rock uplift rates reflects a positive feedback between denudation and the associated isostatic response to unloading. Thus, erosion does not passively respond to advection of crustal material as might be the case in actively converging orogens. Rather, we suggest that the geomorphic response of the Alpine topography to glacial and fluvial erosion and the resulting disequilibrium for modern channelized and associated hillslope processes explains much of the pattern of modern denudation and hence rock uplift. Therefore, in a non-convergent orogen such as the Central European Alps, the observed vertical rock uplift is primarily a consequence of passive unloading due to erosion.

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Interseismic coupling, seismic potential, and earthquake recurrence on the southern front of the Eastern Alps (NE Italy)

2014

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Here we use continuous GPS observations to document the geodetic strain accumulation across the South‐Eastern Alps (NE Italy). We estimate the interseismic coupling on the intracontinental collision thrust fault and discuss the seismic potential and earthquake recurrence. We invert the GPS velocities using the back slip approach to simultaneously estimate the relative angular velocity and the degree of interseismic coupling on the thrust fault that separates the Eastern Alps and the Venetian‐Friulian plain. Comparison between the rigid rotation predicted motion and the shortening observed across the area indicates that the South‐Eastern Alpine thrust front absorbs about 70% of the total convergence between the Adria and Eurasia plates. The coupling is computed on a north dipping fault following the continuous external seismogenic thrust front of the South‐Eastern Alps. The modeled thrust fault is currently locked from the surface to a depth of ≈10 km. The transition zone between locked and creeping portions of the fault roughly corresponds with the belt of microseismicity parallel and to the north of the mountain front. The estimated moment deficit rate is 1.3 ± 0.4 × 1017 Nm/yr. The comparison between the estimated moment deficit and that released historically by the earthquakes suggests that to account for the moment deficit the following two factors or their combination should be considered: (1) a significant part of the observed interseismic coupling is released aseismically and (2) infrequent “large” events with long return period (> 1000 years) and with magnitudes larger than the value assigned to the largest historical events (Mw≈ 6.7).

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Tectonic implications of the GPS velocity field in the northern Adriatic region

Cited by 173 publications

References 15 publications

Geokinematics of Central Europe: New insights from the CERGOP-2/Environment Project

Geokinematics of Central Europe: New insights from the CERGOP-2/Environment Project

Erosion-driven uplift of the modern Central Alps

Interseismic coupling, seismic potential, and earthquake recurrence on the southern front of the Eastern Alps (NE Italy)

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