Active deformation and seismicity in the Southern Alps (Italy): The Montello hill as a case study

Danesi, Stefania; Pondrelli, Silvia; Salimbeni, Simone; Cavaliere, A.; Serpelloni, Enrico; Danecek, Peter; Lovati, Sara; Massa, Marco

doi:10.1016/j.tecto.2015.03.028

Cited by 21 publications

(24 citation statements)

References 39 publications

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“…The minima (around −0.08 microstrain) occur in autumn 2017, spring/summer 2012 and autumn 2015. It is worth considering that the positive dilatation rate calculated during T1, shown in Figure c, is 0.69 microstrain/year −1 , which is an order of magnitude greater than the rates of tectonic deformation from GPS velocities in this area (in the range of 0.01–0.06 microstrain/year −1 ; Danesi et al, ).…”

Section: Ica Resultsmentioning

confidence: 74%

“…The Eastern Alps and northern Dinarides (see Figure ) marks the boundary between the Adriatic and the Eurasian plates through a wide zone of deformation including a variety of tectonic styles within a complex network of crustal and lithospheric faults (see Serpelloni et al, , for a recent synoptic view). The large part of the Adria‐Eurasia convergence is now accommodated across the southernmost ESA thrust front, where the highest geodetic strain rates are observed in its central segment (the Montello and Cansiglio thrusts; Danesi et al, ; Serpelloni et al, ; see Figure ). Cheloni et al () and Serpelloni et al () showed that the ESA thrust front presents variable interseismic coupling, but uncertainties on coupling values, in particular for its central (i.e., Venetian) sector, are large, due to uncertainties in long‐term motion rates of GPS sites located in the Cansiglio Plateau, which are affected by hydrological deformation transients (e.g., Devoti et al, ).…”

Section: Geologic and Tectonic Settingsmentioning

confidence: 99%

“…We focus on area 2 (Figure ), where the GPS network is denser than areas 1 and 3, thanks to past geodetic experiments (Danesi et al, ) and used only horizontal displacements. We have excluded the site CANV, since the larger displacements observed at this site may also result from topographic amplification of the rainfall‐induced deformation signal (Guglielmi et al, ), being this station located at the edge of the steep slope of the Cansiglio plateau (see also Devoti et al, ).…”

Section: Interpreting the Link Between Precipitation And Deformationmentioning

confidence: 99%

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Hydrologically Induced Karst Deformation: Insights From GPS Measurements in the Adria‐Eurasia Plate Boundary Zone

et al. 2018

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We apply a blind source separation algorithm to the ground displacement time series recorded at continuous Global Positioning System (GPS) stations in the European Eastern Alps and Northern Dinarides. As a result, we characterize the temporal and spatial features of several deformation signals. Seasonal displacements are well described by loading effects caused by Earth surface mass redistributions. More interestingly, we highlight a horizontal, nonseasonal, transient deformation signal, with spatially variable amplitudes and directions. The stations affected by this signal reverse the sense of movement with time, implying a sequence of dilatational and compressional deformation that is oriented normal to rock fractures in karst areas. The temporal evolution of this deformation signal is correlated with the history of cumulated precipitations at monthly time scales. This transient horizontal deformation can be explained by pressure changes associated with variable water levels within vertical fractures in the vadose zones of karst systems. The water level changes required to open or close these fractures are consistent with the fluctuations of precipitation and with the dynamics of karst systems.

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Section: Ica Resultsmentioning

confidence: 74%

Section: Geologic and Tectonic Settingsmentioning

confidence: 99%

Section: Interpreting the Link Between Precipitation And Deformationmentioning

confidence: 99%

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Hydrologically Induced Karst Deformation: Insights From GPS Measurements in the Adria‐Eurasia Plate Boundary Zone

et al. 2018

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“…Until today, Alpine convergence rates decreased strongly. In the Central and Western Alps convergence has ceased (Calais et al 2002;Sue et al 2007), in the Eastern Alps convergence is continuing, largely taken up by thrusting on the southern Alpine border regions (Danesi et al 2015). Lateral extrusion associated with strike slip faulting and orogen-parallel extrusion was active until at least the Miocene (Ratschbacher et al 1991;Linzer et al 2002).…”

Section: Tectonic and Geologic Settingmentioning

confidence: 99%

Greater Alpine river network evolution, interpretations based on novel drainage analysis

Winterberg

Willett

2018

Swiss J Geosci

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The Central European drainage system is dominated by four major rivers (the Danube, Rhine, Rhône and Po). The geometry of these drainage basins has evolved through the history of Alpine and Carpathian orogeny. Analysis of the modern river geometry reveals the geometric stability or instability of the drainage network and enables interpretation of the erosion and exhumation pattern. We characterize the river basin geometry and inter-basin relief through metrics including the quantity v that relates to the catchment area, and a catchment restricted minimum elevation (CRM) metric. The interpretations from the maps are in agreement with known river captures and morphological features. The v-map reveals additional systematic, large-scale transients, consistent with ongoing basin changes, mainly manifesting in the Danube losing catchment area. We postulate that the changes are related to the longitudinal initiation of the Danube River in the Alpine foreland, augmented by the formation of the Carpathians and the filling of the Pannonian Basin, which resulted in an elongation of the Danube river basin. We conclude that the Danube has lacked erosional power throughout its history and therefore been victim to capture and area loss.

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“…In the Southern Alps, compression of about 2 mm a −1 is accommodated along the pede‐mountain front (Benedetti et al ., ; Galadini et al ., ; Bechtold et al ., ; Anselmi et al ., ). Large destructive earthquakes originate along the frontal thrust, a great portion of which is currently locked, representing a potential site of future large events (Cheloni et al ., ; Danesi et al ., ).…”

Section: Introductionmentioning

confidence: 97%

The seismogenic thickness in Italy: constraints on potential magnitude and seismic hazard

Chiarabba

Gori

2016

Terra Nova

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The thickness of the seismogenic layer is a key parameter for seismic hazard, since it can be used to constrain the maximum depth of faulting and the potential magnitude. In this study, we compute the seismogenic thickness in the Italian region by defining the lower seismicity cut-off, using highquality hypocentral locations of earthquakes that occurred in the past decade. Along the eastern Alps, the seismogenic thickness is about 12-14 km, laterally homogeneous along the entire south-verging thrust front. In the Apennines exten-sional belt, lateral changes in seismogenic thickness are evident, and correlate with changes in the seismic energy released by past earthquakes. The potential magnitude is larger in the southern Apennines where the seismogenic thickness is greater (16-18 km) than in the northern Apennines where it is less (6-10 km) and seismic energy is partially released by the creeping of faults.Additional Supporting Information may be found in the online version of this article: Figure S1. Map of the crustal earthquakes used for the computation of the seismicity cut-off. Colours scale with the hypocentral depth in the crust. 408

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Active deformation and seismicity in the Southern Alps (Italy): The Montello hill as a case study

Cited by 21 publications

References 39 publications

Hydrologically Induced Karst Deformation: Insights From GPS Measurements in the Adria‐Eurasia Plate Boundary Zone

Hydrologically Induced Karst Deformation: Insights From GPS Measurements in the Adria‐Eurasia Plate Boundary Zone

Greater Alpine river network evolution, interpretations based on novel drainage analysis

The seismogenic thickness in Italy: constraints on potential magnitude and seismic hazard

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