Active tectonics and earthquake sources in the epicentral area of the 1857 Basilicata earthquake (southern Italy)

Cello, Giuseppe; Tondi, Emanuele; Micarelli, L.; Mattioni, L.

doi:10.1016/s0264-3707(03)00037-1

Cited by 90 publications

(106 citation statements)

References 20 publications

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“…2). These scarps are perpendicular to the strike of the streams and they are aligned to the main trend of the EAFS, which was clearly identified between the villages of Pergola to the north and Viggiano to the south (Cello et al, 2003;Maschio et al, 2005). Thus, we suspect that the NW-SE scarps observed in the field could represent the surface expression of an additional strand of the EAFS.…”

Section: Geological Settingmentioning

confidence: 71%

“…The HAV was hit by the M 7, 1857 Basilicata earthquake. A seismogenic structure capable of producing large events is alternatively associated with: (1) the Monti della Maddalena Fault System (MMFS) (Pantosti and Valensise, 1988;Maschio et al, 2005;Improta et al, 2010) and (2) the Eastern Agri Fault System (EAFS) (Benedetti et al, 1998;Cello et al, 2003;Giano et al, 2000). The MMFS bounds the HAV to the SW and runs for about 25 km between Pergola and Moliterno villages, whereas the EAFS, which is associated with mature fault-line scarps, bounds the HAV to the NE.…”

Section: Geological Settingmentioning

confidence: 99%

“…The MMFS bounds the HAV to the SW and runs for about 25 km between Pergola and Moliterno villages, whereas the EAFS, which is associated with mature fault-line scarps, bounds the HAV to the NE. No detailed definition exists on the length of the EAFS that, based on mapped faults between Pergola and Viggiano villages, is about 25 km (Cello et al, 2003;Maschio et al, 2005). The study area falls in the southeastern part of the HAV, in the territory of Montemurro (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…The earthquakes and ambient noise recordings have been analysed by the HVSR techniques (Lermo and ChavezGarcia, 1993;Castro et al, 1996). The HVSR functions were calculated by averaging the HVSR obtained by dividing the signal into non-overlapping windows of 20 s. Each window was detrended, tapered, padded, FF-Transformed and smoothed with triangular windows with a width equal 5 % of the central frequency.…”

Section: Earthquake and Ambient Noise Horizontal-to-vertical Spectra mentioning

confidence: 99%

“…Some authors suggest that transient can affect estimates of fundamental frequency of soils, but a simple variation of amplitude never caused this problem according to Parolai and Galiana-Merino (2006) and Mucciarelli (2007). The ambient noise recordings and HVSR analysis have been estimated according SESAME (Chatelain et al, 2008) and Albarello et al (2011) guidelines.…”

Section: Earthquake and Ambient Noise Horizontal-to-vertical Spectra mentioning

confidence: 99%

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Geological and geophysical characterization of the southeastern side of the High Agri Valley (southern Apennines, Italy)

Giocoli

Stabile

Adurno

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Abstract. In the frame of a national project funded by Eni S.p.A. and developed by three institutes of the National Research Council (the Institute of Methodologies for Environmental Analysis, the Institute of Research for Hydrogeological Protection and the Institute for Electromagnetic Sensing of the Environment), a multidisciplinary approach based on the integration of satellite, aero-photogrammetric and in situ geophysical techniques was applied to investigate an area located in the Montemurro territory in the southeastern sector of the High Agri Valley (Basilicata Region, southern Italy). This paper reports the results obtained by the joint analysis of in situ geophysical surveys, aerial photos interpretation, morphotectonic investigation, geological field survey and borehole data. The joint analysis of different data allowed us (1) to show the shallow geological and structural setting, (2) to detect the geometry of the different lithological units and their mechanical and dynamical properties, (3) to image a previously unmapped fault beneath suspected scarps/warps and (4) to characterize the geometry of an active landslide affecting the study area.

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Section: Geological Settingmentioning

confidence: 71%

Section: Geological Settingmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Section: Earthquake and Ambient Noise Horizontal-to-vertical Spectra mentioning

confidence: 99%

Section: Earthquake and Ambient Noise Horizontal-to-vertical Spectra mentioning

confidence: 99%

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Geological and geophysical characterization of the southeastern side of the High Agri Valley (southern Apennines, Italy)

Giocoli

Stabile

Adurno

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Orthogonal relation between wavefield polarization and fast S wave direction in the Val d'Agri region: An integrating method to investigate rock anisotropy

et al. 2014

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[1] Wavefield polarization is investigated using 200 seismograms recorded by a network of 20 stations installed on rock outcrops in the Val d'Agri region that hosts the largest oil fields in the southern Apennines (Italy). Polarization is assessed both in the frequency and time domains through the individual-station horizontal-to-vertical spectral ratio and covariance-matrix analysis, respectively. We find that most of the stations show a persistent horizontal polarization of waveforms, with a NE-SW predominant trend. This direction is orthogonal to the general trend of Quaternary normal faults in the region and to the maximum horizontal stress related to the present extensional regime. According to previous studies in other areas, such a directional effect is interpreted as due to the presence of fault-related fracture fields, polarization being orthogonal to their predominant direction. A comparison with S wave anisotropy inferred from shear wave splitting indicates an orthogonal relation between horizontal polarization and fast S wave direction. This suggests that wavefield polarization and fast velocity direction are effects of the same cause: The existence of an anisotropic medium represented by fractured rocks where shear wave velocity is larger in the crack-parallel component and compliance is larger perpendicularly to the crack strike. The latter is responsible for the observed anisotropic pattern of amplitudes of horizontal ground motion in the study area.

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Fluid injection induced seismicity reveals a NE dipping fault in the southeastern sector of the High Agri Valley (southern Italy)

Stabile

Giocoli

Perrone

et al. 2014

Geophysical Research Letters

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On 2 June 2006 the wastewater produced during the oil and gas field exploitation in High Agri Valley (southern Italy) started to be managed by disposal through pumping the fluids back into the subsurface at the Costa Molina 2 (CM2) injection well, located in the southeastern sector of the valley. The onset of microearthquakes (Ml ≤ 2) after 4 days at about 1.3 km SW of CM2 well suggests fluid injection induced seismicity by the diffusion of pore pressure. Moreover, the space-time evolution of 196 high-resolution relocated events reveals a previously unmapped NE dipping fault. We investigate the physical processes related to the fluid injection induced seismicity and delineate the previously unmapped fault by jointly analyzing seismicity data, geological observations, fluid injection data, the stratigraphic log of the CM2 well, and the electrical resistivity tomography survey carried out in the study area.

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Active tectonics and earthquake sources in the epicentral area of the 1857 Basilicata earthquake (southern Italy)

Cited by 90 publications

References 20 publications

Geological and geophysical characterization of the southeastern side of the High Agri Valley (southern Apennines, Italy)

Geological and geophysical characterization of the southeastern side of the High Agri Valley (southern Apennines, Italy)

Orthogonal relation between wavefield polarization and fast S wave direction in the Val d'Agri region: An integrating method to investigate rock anisotropy

Fluid injection induced seismicity reveals a NE dipping fault in the southeastern sector of the High Agri Valley (southern Italy)

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