3D GNSS Velocity Field Sheds Light on the Deformation Mechanisms in Europe: Effects of the Vertical Crustal Motion on the Distribution of Seismicity

Pina-Valdes, J.; Socquet, Anne; Beauval, Céline; Doin, Marie‐Pierre; D’Agostino, N.; Shen, Zheng‐Kang

doi:10.1029/2021jb023451

Cited by 34 publications

(19 citation statements)

References 86 publications

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“…This pattern of vertical motions does not correlate well with the GNSS-derived vertical velocities of this study (Fig. 4b), or with that of Piña-Valdés et al (2022), which show subsidence for almost the entire Circum-Pannonia region. However, it is clear that the margins of the Pannonian basin are still relatively uplifting with respect to the deep basins, which means a near 0 vertical motion of the margins compared to the 1-2 mm/ yr subsidence of the basins in the ITRF reference frame (Fig.…”

Section: Vertical Velocitiescontrasting

confidence: 89%

“…The scarce GNSS network of the region in the 2000's resulted in the interpolation of the velocity field based on a relatively crude dataset (Grenerczy et al 2005), which did not enable the reliable calculation of strain rate components, given the small gradients in surface velocities in the area. More recent GNSS-based studies successfully demonstrated the potential of geodetic strain analysis from a global (Kreemer et al 2014) or European scale (Piña-Valdés et al 2022) perspective. However, a targeted analysis of the Circum-Pannonian region is still lacking.…”

Section: Research Goalsmentioning

confidence: 99%

“…Piña-Valdés et al (2022) suggested that the wide-spread subsidence in Central-Eastern Europe is not related to horizontal strain rates, which would actually result in uplift for most of the Pannonian region, due to the ongoing shortening. Hence, the wide-spread subsidence is probably related to deep-seated, sub-lithospheric processes (Piña-Valdés et al 2022). Given that the GNSS-derived relative vertical motions correspond well with the geological observations (Fig.…”

Section: Vertical Velocitiesmentioning

confidence: 99%

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Active tectonics of the Circum-Pannonian region in the light of updated GNSS network data

Porkoláb

Broerse

Kenyeres³

et al. 2023

Acta Geod Geophys

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The Pannonian basin is an extensional back-arc basin that has undergone neotectonic inversion and is currently shortening. The understanding and quantification of present-day deformation processes during this inversion are still incomplete. To this end, we investigate the active deformation of the Circum-Pannonian region via the interpolation of GNSS-derived velocity field and the derivation of the strain rate fields. For the interpolation of the velocity field, we use ordinary kriging, a strochastic interpolation method. Our results show that estimating a strain rate field that is virtually free of short-wavelength noise requires the scaling of the velocity uncertainties, i.e. assuming a minimum standard deviation of 1 mm/yr in our case. The deformation of the Circum-Pannonian region is defined by the 2–3 mm/yr, NNE-directed motion of the Dinarides, and by the 0.5–1.5 mm/yr, WSW to SSW directed motion of the eastern areas (European foreland, East Carpathians, South Carpathians, Transylvanian basin). These opposite-sense motions define a large-scale, on average NE-SW shortening and transpression-type deformation in the Dinarides as well as in the Pannonian basin, while the East and South Carpathians undergo regional N–S extension. Neotectonic structures generally show good agreement with the strain rate field, for example in the Dinarides, Eastern Alps, or in the western Pannonian basin. However, the presence of fault-parallel shortening or biaxial shortening along sinistral neotectonic structures in the central and eastern Pannonian basin show some discrepancy between current geodetic and observed neotectonic deformation. The vertical velocity field shows dominantly 100 and 1000 km wavelength signals, the former is probably related to the response of the Pannonian lithosphere-asthenosphere system to neotectonic basin inversion, while latter can possibly be explained by far-field subsidence patterns induced by the mantle response to melting of the Fennoscandian ice sheet during the current interglacial period.

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Section: Vertical Velocitiescontrasting

confidence: 89%

Section: Research Goalsmentioning

confidence: 99%

Section: Vertical Velocitiesmentioning

confidence: 99%

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Active tectonics of the Circum-Pannonian region in the light of updated GNSS network data

Porkoláb

Broerse

Kenyeres³

et al. 2023

Acta Geod Geophys

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“…Regarding to the present-day tectonic setting of the Alps, studies have shown a slow and complex deformation pattern in a global strike-slip context related to the rotation of Apulian plate (Mathey et al, 2021;Piña-Valdés et al, 2022). In this context, the internal part of the J o u r n a l P r e -p r o o f Alps has been subjected to extensional deformation since 3 Ma, whereas its external part still undergoes compression (Sue et al, 1999;Bilau et al, 2020), as shown by geodesy and seismicity (Walpersdorf et al, 2018;Mathey et al, 2021;Piña-Valdés et al, 2022). This deformation pattern is characterized by a shortening rate of ≤1 mm/yr (Nocquet et al, 2016) and vertical component culminating in the ECMs with rates > 1mm/yr (Serpelloni et al, 2013).…”

Section: Geological and Tectonic Settingsmentioning

confidence: 99%

“…East of the city of Nice, Bigot-Cormier et al (2004) analysed seismicreflection profiles to infer uplift rates of 0.3-0.5 mm/yr of the North Ligurian margin since 5 Ma. Regarding the present-day uplift, several studies using GPS data in the Alps (Serpelloni et al, 2013;Nocquet et al, 2016;Walpersdorf et al, 2018;Sternai et al, 2019;Piña-Valdés et al, 2022) evidence limited to slow vertical displacements of <0.5 mm/yr in the SW Alps.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Fluvial bedrock gorges as markers for Late-Quaternary tectonic and climatic forcing in the Southwestern Alps

et al. 2022

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Crustal uplift rates implied by synchronously investigating Late Quaternary marine terraces in the Milazzo Peninsula, Northeast Sicily, Italy

Meschis,

Romano,

Palano

et al. 2024

Earth Surf Processes Landf

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Late Quaternary crustal uplift is well recognized in northeast Sicily, southern Italy, a region also prone to damaging earthquakes such as the 1908 “Messina” earthquake (Mw 7.1), the deadliest seismic event reported within the Italian Earthquake Catalogue. Yet it is still understudied if, within the Milazzo Peninsula, crustal uplift rates are varying spatially and temporally and whether they may be either influenced by (i) local upper‐plate faulting activity or (ii) deep geodynamic processes.To investigate the long‐term crustal vertical movements in northeast Sicily, we have mapped a flight of Middle‐Late Pleistocene marine terraces within the Milazzo Peninsula and in its southern area and refined their chronology, using a synchronous correlation approach driven by published age controls. This has allowed a new calculation of the associated crustal uplift rates, along a north–south oriented coastal‐parallel transect within the investigated area. Our results show a decreasing uplift rate from south to north across the Milazzo Peninsula and beyond, and that the associated rates of uplift have been constant through the Late Quaternary. This spatially varying yet temporally constant vertical deformation helps to constrain the amount of uplift, allowing us to explore which is the driving mechanism(s), proposing a few related scenarios.We discuss our results in terms of tectonic implications and emphasize the importance of using appropriate approaches, as such applying a synchronous correlation method, to refine chronologies of undated palaeoshorelines when used for tectonic investigations.

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3D GNSS Velocity Field Sheds Light on the Deformation Mechanisms in Europe: Effects of the Vertical Crustal Motion on the Distribution of Seismicity

Cited by 34 publications

References 86 publications

Active tectonics of the Circum-Pannonian region in the light of updated GNSS network data

Active tectonics of the Circum-Pannonian region in the light of updated GNSS network data

Fluvial bedrock gorges as markers for Late-Quaternary tectonic and climatic forcing in the Southwestern Alps

Crustal uplift rates implied by synchronously investigating Late Quaternary marine terraces in the Milazzo Peninsula, Northeast Sicily, Italy

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