Bulletin of the Seismological Society of America, 2015
ABSTRACT On 30 October 1930, an Mw 5.8 earthquake hit the northern Marche coastal area (central I... more ABSTRACT On 30 October 1930, an Mw 5.8 earthquake hit the northern Marche coastal area (central Italy), causing significant damage (I0 VIII–IX degree Mercalli–Cancani– Sieberg) along a 40 km stretch of the Adriatic coast between Pesaro and Ancona, centered on the town of Senigallia. This area is characterized by relatively infrequent and moderate-sized earthquakes and by elusive active faults. In spite of the presence of wellknown northwest–southeast-trending, northeast-verging fault-propagation folds forming the outer thrusts of the Apennines, the current level of activity, and the kinematics of these coastal structures are still controversial. We present a multidisciplinary analysis of the source of the 30 October 1930 Senigallia earthquake, combining instrumental and macroseismic data and elaborations with available evidence from geological and tectonic investigations.We determine the main seismic parameters of the source, including the earthquake location, its magnitude, and, for the first time, its focal mechanism, providing the first instrumental evidence for thrust faulting along the northern Marche coastal belt. Our findings provide conclusive evidence for the current activity of the northern Marche coastal thrusts. As such they have significant implications for the seismic hazard of the area, a densely populated region that hosts historical heritage, tourism facilities, industrial districts, and key transportation infrastructures.
We study moderate-magnitude earthquakes (Ml >=3.5) occurred in the Aquila region recorded by t... more We study moderate-magnitude earthquakes (Ml >=3.5) occurred in the Aquila region recorded by the Istituto Nazionale di Geofisica e Vulcanologia from 1981 to 2009 (CSI, Castello et al., 2006 - http://www.ingv.it/CSI/ ; and ISIDe, http://iside.rm.ingv.it/iside/standard/index.jsp) as well as local temporary seismic networks We identify three major sequences (1985, 1994, 1996) occurring before the 6.th April 2009 Mw=6.3 earthquake. The 1985 earthquake (Ml=4.2) is the larger earthquake occurred in the investigated region till April 2009. The 1994 (Ml=3.9) and 1996 (Ml=4.1) occurred in the Campotosto area (NE to L'Aquila). We computed the source moment tensor using surface waves (Giardini et al., 1993) for the main shocks of the 1985 (Mw=4.7) and 1996 (Mw=4.4) sequences. The solutions show normal fault ruptures. We do not find a reliable solution for the major 1994 sequence earthquake. This suggests, that the magnitude of this event is probably below Mw≈4.2, which is the minimum...
In this work we analyse the most important earthquakes of the 20th century occurred in the Altoti... more In this work we analyse the most important earthquakes of the 20th century occurred in the Altotiberina Valley in 1917, 1918, 1919 and 1948; in particular instrumental relocation and Ms magnitude estimation are re-evaluated. The area investigated, the Sansepolcro basin, is characterized by the presence of important earthquakes in the past with estimated intensity even larger than IX MCS (the 1352 Monterchi earthquake, the 1389 Boccaserriola, the 1458 Citta' di Castello, the 1781 Cagliese and the 1917 Monterchi-Citerna earthquakes, CPTI Working Group, 2004) and by a surprisingly scarce instrumental seismicity compared to the adjacent areas struck by high seismicity (Castello et al., 2005; Ciaccio et al., 2006). In particular, the area north of Sansepolcro has been struck in recent years by four minor sequences, occurred between 1987 and 2001 with magnitude ranging from Ml3.0 to Mw4.7. The relocation of these earthquakes is particularly critical and in an important issue. An instr...
The 1908 earthquake is one of the most catastrophic events in Italian history, recorded by most o... more The 1908 earthquake is one of the most catastrophic events in Italian history, recorded by most of the historical seismic stations existing at that time. Some of the seismograms recorded by these stations have already been used by many authors for the purpose of studying source characteristics, although only copies of the original recordings were available. Thanks to the Euroseismos project (2002-2007) and to the Sismos project, most of the original data (seismogram recordings and instrument parameter calibrations) for these events are now available in digital formats. Sismos technical facilities now allow us to apply the modern methods of digital-data analysis for the earthquakes recorded by mechanical and electromagnetic seismographs. The Sismos database has recently acquired many original seismograms and related instrumental parameters for the 1908 Messina earthquake, recorded by 14 stations distributed worldwide and never before used in previous works. We have estimated the main...
The area investigated, the Sansepolcro basin, is characterized by the presence of important earth... more The area investigated, the Sansepolcro basin, is characterized by the presence of important earthquakes in the past with estimated intensity even larger than IX MCS (the 1352 Monterchi earthquake, the 1389 Boccaserriola, the 1458 Citta' di Castello, the 1781 Cagliese and the 1917 Monterchi-Citerna earthquakes, CPTI Working Group, 2004) and by a surprisingly scarce instrumental seismicity compared to the adjacent areas struck by high seismicity (Castello et al., 2005; Ciaccio et al., 2006). The area north of Sansepolcro has been struck in recent years by four minor sequences, occurred between 1987 and 2001 with magnitude ranging from Ml3.0 to Mw4.7. In this work we analyse the most important earthquakes of the 20th century occurred in the Altotiberina Valley in 1917, 1918, 1919 and 1948; in particular instrumental relocation, focal mechanisms and Ms and Mw magnitude estimation are re-evaluated. The relocation of these earthquakes is particularly critical and is an important issu...
The Southern Apennines chain is related to the west-dipping subduction of the Apulian lithosphere... more The Southern Apennines chain is related to the west-dipping subduction of the Apulian lithosphere. The strongest seismic events mostly occurred in correspondence of the chain axis along normal NW-SE striking faults parallel to the chain axis. These structures are related to mantle wedge upwelling beneath the chain. In the foreland, faulting develops along E-W strike-slip to oblique-slip faults related to the roll-back of the foreland. Similarly to other historical events in Southern Apennines, the I 0 = XI (MCS intensity scale) 23 July 1930 earthquake occurred between the chain axis and the thrust front without surface faulting. This event produced more than 1400 casualties and extensive damage elongated approximately E-W. The analysis of the historical waveforms provides the chance to study the fault geometry of this ''anomalous'' event and allow us to clarify its geodynamic significance. Our results indicate that the M S = 6.6 1930 event nucleated at 14.6 ± 3.06 km depth and ruptured a north dipping, N100°E striking plane with an oblique motion. The fault propagated along the fault strike 32 km to the east at about 2 km/s. The eastern fault tip is located in proximity of the Vulture volcano. The 1930 hypocenter, similarly to the 1990 (M W = 5.8) Southern Apennines event, is within the Mesozoic carbonates of the Apulian foredeep and the rupture developed along a ''blind'' fault. The 1930 fault kinematics significantly differs from that typical of large Southern Apennines earthquakes, which occur in a distinct seismotectonic domain on late Pleistocene to Holocene outcropping faults. These results stress the role played by pre-existing, ''blind'' faults in the Apennines subduction setting.
During the ML = 5.6 and 5.8 earthquakes occurredin central Italy on 26 September 1997 the histori... more During the ML = 5.6 and 5.8 earthquakes occurredin central Italy on 26 September 1997 the historiccentre of Nocera Umbra, lying on top of a 120 m highhill, was diffusely damaged (VII-VIII degrees of MCSintensity). Some recently built houses in the modernpart of the town suffered an even higher level ofdamage. A temporary seismic array was deployed toinvestigate a possible
Bulletin of the Seismological Society of America, 2008
ABSTRACT We collected analog seismogram recordings and seismic bulletins for two moderate magnitu... more ABSTRACT We collected analog seismogram recordings and seismic bulletins for two moderate magnitude earthquakes in the province of Jaen, southern Spain, on 10 March and 19 May 1951, and the series of aftershocks. Seismograms from the two main events reveal striking similarity, pointing to nearby locations and similar source mechanisms. This casts a shadow on the quality of preserved phase readings and macroseismic data, which suggests a distance of several tens of kilometers between both mainshocks and aftershocks. A critical review of available phase readings permitted us to detect several misinterpretations in the original bulletins and to obtain better constrained hypocenter relocations - about 10 km apart - for the two mainshocks, as well as location estimates for 20 aftershocks. The recording of the 1951 Jaen earthquake doublet at a network of common stations allows a straightforward quality control of our digitized seismograms by waveform comparison. We estimate faulting parameters of the two mainshocks from regional moment tensor inversion, obtaining moment magnitude M-w 5.2 and M-w 5.3, respectively, depth of 20 km, and strike-slip faulting mechanisms with minor normal slip component and northeast southwest oriented T axes. Deconvolution of body waveforms from an M-w 4.4 aftershock yields simple triangular source time functions for both main events, with durations close to 1 sec. While several previous studies had difficulties in characterizing these earthquakes, partially describing them as unusual intermediate deep focus events, we propose simple shear faulting sources in the middle crust and faulting geometries consistent with the regional seismotectonic framework.
ABSTRACT On July 23rd 1930, a strong earthquake (Ms=6.6) occurred in the Irpinia region, the most... more ABSTRACT On July 23rd 1930, a strong earthquake (Ms=6.6) occurred in the Irpinia region, the most seismically active area of the Southern Apennines (Italy). Destructive effects were reported in a wide area of about 6300 km2, causing more than 1400 victims. The same region had already been struck by several large earthquakes in 1456 (Me=6.9), 1694 (Me=6.0), 1702 (Me=6.0), 1732 (Me=6.6), and 1910 (Me=5.9). Other major events have hit Irpinia since the 1930 earthquake, including that of 1962 (Mw = 6.2) and the catastrophic one of 23 Nov 1980 (Mw = 6.9). Formerly published studies concerning the 1930 Irpinia event include analysis of macroseismic data, first motion polarities and a single station waveforms. By using the available bulletins and the historical seismograms, in our previous study we estimated the source parameters in terms of focal mechanism, magnitude, hypocentral location and seismic moment. Fault length, rupture velocity and other characteristics are also obtained by performing body waveform inversion for moment rate retrieval. These results are here used to study the static stress transfer between the 1930 Irpinia earthquake and subsequent large events like the 1962, and 1980 ones in order to investigate the possible fault interaction and earthquake triggering. To improve our knowledge on the region of the1930 event, we also study the Coulomb stress field related to E-W trending seismogenic sources, responsible for the main sub-events of the multiple 1456 historical earthquake. Modelling of such effects is useful both to obtain more information on seismogenic sources and to gain an improved evaluation of seismic hazard in this region. Submitted Università di Perugia, Perugia, Italy 3.2. Tettonica attiva
ABSTRACT The December 28th, 1908 M 7.1 Messina earthquake is one of the largest instrumentally re... more ABSTRACT The December 28th, 1908 M 7.1 Messina earthquake is one of the largest instrumentally recorded earthquake in the Central Mediterranean and among the first to be recorded by seismological and geodetic instruments. Starting from the evaluation of the present-day geodetically-observed active deformation in the Messina Straits region, we revised the available data on the interseismic and coseismic deformation in the Messina Straits region.GPS observations and terrestrial geodetic measurements show that the main active deformation is given by a 110-160 nstrain/yr right-lateral N-S simple shear which is scarcely consistent with the faulting geometry generally associated with the 1908 M_w=7.1 Messina earthquake. Then we use the levelling data measuring the coseismic deformation of the 1908 earthquake and historical seismograms to evaluate the whole range of faulting mechanisms allowed by the data. This analysis suggests that the available data for the 1908 earthquake allows a larger component of North-South strike slip of what hitherto considered, resolving the discrepancy with the present-day deformation pattern. Finally we discuss these new findings in the light of the present-day regional kinematics between the Calabrian and Sicilian crustal blocks.
... Ferrari G. e Pino NA; 2003: Euroseismos 2002-2003, a project for saving and studying historic... more ... Ferrari G. e Pino NA; 2003: Euroseismos 2002-2003, a project for saving and studying historical seismograms in the euro-mediterranean area. ... E SIMBRUINI (APPENNINO CENTRALE) A. Frepoli(1), NM Pagliuca (1), C. Maggi(1,2), F. Marra(1), M. Pirro(1) e A. Marchetti(1) (1 ...
Numero giornaliero di terremoti Cumulativa del numero di terremoti Aggiornamento: 11/11/15 09:24:... more Numero giornaliero di terremoti Cumulativa del numero di terremoti Aggiornamento: 11/11/15 09:24:17 (ora locale) da http://iside.rm.ingv.it/ 0.0 ≤ M ! 2.0 2.0 ≤ M ! 3.0 3.0 ≤ M ! 4.0 4.0 ≤ M ! 5.0 M ≥ 5.0
Bulletin of the Seismological Society of America, 2015
ABSTRACT On 30 October 1930, an Mw 5.8 earthquake hit the northern Marche coastal area (central I... more ABSTRACT On 30 October 1930, an Mw 5.8 earthquake hit the northern Marche coastal area (central Italy), causing significant damage (I0 VIII–IX degree Mercalli–Cancani– Sieberg) along a 40 km stretch of the Adriatic coast between Pesaro and Ancona, centered on the town of Senigallia. This area is characterized by relatively infrequent and moderate-sized earthquakes and by elusive active faults. In spite of the presence of wellknown northwest–southeast-trending, northeast-verging fault-propagation folds forming the outer thrusts of the Apennines, the current level of activity, and the kinematics of these coastal structures are still controversial. We present a multidisciplinary analysis of the source of the 30 October 1930 Senigallia earthquake, combining instrumental and macroseismic data and elaborations with available evidence from geological and tectonic investigations.We determine the main seismic parameters of the source, including the earthquake location, its magnitude, and, for the first time, its focal mechanism, providing the first instrumental evidence for thrust faulting along the northern Marche coastal belt. Our findings provide conclusive evidence for the current activity of the northern Marche coastal thrusts. As such they have significant implications for the seismic hazard of the area, a densely populated region that hosts historical heritage, tourism facilities, industrial districts, and key transportation infrastructures.
We study moderate-magnitude earthquakes (Ml >=3.5) occurred in the Aquila region recorded by t... more We study moderate-magnitude earthquakes (Ml >=3.5) occurred in the Aquila region recorded by the Istituto Nazionale di Geofisica e Vulcanologia from 1981 to 2009 (CSI, Castello et al., 2006 - http://www.ingv.it/CSI/ ; and ISIDe, http://iside.rm.ingv.it/iside/standard/index.jsp) as well as local temporary seismic networks We identify three major sequences (1985, 1994, 1996) occurring before the 6.th April 2009 Mw=6.3 earthquake. The 1985 earthquake (Ml=4.2) is the larger earthquake occurred in the investigated region till April 2009. The 1994 (Ml=3.9) and 1996 (Ml=4.1) occurred in the Campotosto area (NE to L'Aquila). We computed the source moment tensor using surface waves (Giardini et al., 1993) for the main shocks of the 1985 (Mw=4.7) and 1996 (Mw=4.4) sequences. The solutions show normal fault ruptures. We do not find a reliable solution for the major 1994 sequence earthquake. This suggests, that the magnitude of this event is probably below Mw≈4.2, which is the minimum...
In this work we analyse the most important earthquakes of the 20th century occurred in the Altoti... more In this work we analyse the most important earthquakes of the 20th century occurred in the Altotiberina Valley in 1917, 1918, 1919 and 1948; in particular instrumental relocation and Ms magnitude estimation are re-evaluated. The area investigated, the Sansepolcro basin, is characterized by the presence of important earthquakes in the past with estimated intensity even larger than IX MCS (the 1352 Monterchi earthquake, the 1389 Boccaserriola, the 1458 Citta' di Castello, the 1781 Cagliese and the 1917 Monterchi-Citerna earthquakes, CPTI Working Group, 2004) and by a surprisingly scarce instrumental seismicity compared to the adjacent areas struck by high seismicity (Castello et al., 2005; Ciaccio et al., 2006). In particular, the area north of Sansepolcro has been struck in recent years by four minor sequences, occurred between 1987 and 2001 with magnitude ranging from Ml3.0 to Mw4.7. The relocation of these earthquakes is particularly critical and in an important issue. An instr...
The 1908 earthquake is one of the most catastrophic events in Italian history, recorded by most o... more The 1908 earthquake is one of the most catastrophic events in Italian history, recorded by most of the historical seismic stations existing at that time. Some of the seismograms recorded by these stations have already been used by many authors for the purpose of studying source characteristics, although only copies of the original recordings were available. Thanks to the Euroseismos project (2002-2007) and to the Sismos project, most of the original data (seismogram recordings and instrument parameter calibrations) for these events are now available in digital formats. Sismos technical facilities now allow us to apply the modern methods of digital-data analysis for the earthquakes recorded by mechanical and electromagnetic seismographs. The Sismos database has recently acquired many original seismograms and related instrumental parameters for the 1908 Messina earthquake, recorded by 14 stations distributed worldwide and never before used in previous works. We have estimated the main...
The area investigated, the Sansepolcro basin, is characterized by the presence of important earth... more The area investigated, the Sansepolcro basin, is characterized by the presence of important earthquakes in the past with estimated intensity even larger than IX MCS (the 1352 Monterchi earthquake, the 1389 Boccaserriola, the 1458 Citta' di Castello, the 1781 Cagliese and the 1917 Monterchi-Citerna earthquakes, CPTI Working Group, 2004) and by a surprisingly scarce instrumental seismicity compared to the adjacent areas struck by high seismicity (Castello et al., 2005; Ciaccio et al., 2006). The area north of Sansepolcro has been struck in recent years by four minor sequences, occurred between 1987 and 2001 with magnitude ranging from Ml3.0 to Mw4.7. In this work we analyse the most important earthquakes of the 20th century occurred in the Altotiberina Valley in 1917, 1918, 1919 and 1948; in particular instrumental relocation, focal mechanisms and Ms and Mw magnitude estimation are re-evaluated. The relocation of these earthquakes is particularly critical and is an important issu...
The Southern Apennines chain is related to the west-dipping subduction of the Apulian lithosphere... more The Southern Apennines chain is related to the west-dipping subduction of the Apulian lithosphere. The strongest seismic events mostly occurred in correspondence of the chain axis along normal NW-SE striking faults parallel to the chain axis. These structures are related to mantle wedge upwelling beneath the chain. In the foreland, faulting develops along E-W strike-slip to oblique-slip faults related to the roll-back of the foreland. Similarly to other historical events in Southern Apennines, the I 0 = XI (MCS intensity scale) 23 July 1930 earthquake occurred between the chain axis and the thrust front without surface faulting. This event produced more than 1400 casualties and extensive damage elongated approximately E-W. The analysis of the historical waveforms provides the chance to study the fault geometry of this ''anomalous'' event and allow us to clarify its geodynamic significance. Our results indicate that the M S = 6.6 1930 event nucleated at 14.6 ± 3.06 km depth and ruptured a north dipping, N100°E striking plane with an oblique motion. The fault propagated along the fault strike 32 km to the east at about 2 km/s. The eastern fault tip is located in proximity of the Vulture volcano. The 1930 hypocenter, similarly to the 1990 (M W = 5.8) Southern Apennines event, is within the Mesozoic carbonates of the Apulian foredeep and the rupture developed along a ''blind'' fault. The 1930 fault kinematics significantly differs from that typical of large Southern Apennines earthquakes, which occur in a distinct seismotectonic domain on late Pleistocene to Holocene outcropping faults. These results stress the role played by pre-existing, ''blind'' faults in the Apennines subduction setting.
During the ML = 5.6 and 5.8 earthquakes occurredin central Italy on 26 September 1997 the histori... more During the ML = 5.6 and 5.8 earthquakes occurredin central Italy on 26 September 1997 the historiccentre of Nocera Umbra, lying on top of a 120 m highhill, was diffusely damaged (VII-VIII degrees of MCSintensity). Some recently built houses in the modernpart of the town suffered an even higher level ofdamage. A temporary seismic array was deployed toinvestigate a possible
Bulletin of the Seismological Society of America, 2008
ABSTRACT We collected analog seismogram recordings and seismic bulletins for two moderate magnitu... more ABSTRACT We collected analog seismogram recordings and seismic bulletins for two moderate magnitude earthquakes in the province of Jaen, southern Spain, on 10 March and 19 May 1951, and the series of aftershocks. Seismograms from the two main events reveal striking similarity, pointing to nearby locations and similar source mechanisms. This casts a shadow on the quality of preserved phase readings and macroseismic data, which suggests a distance of several tens of kilometers between both mainshocks and aftershocks. A critical review of available phase readings permitted us to detect several misinterpretations in the original bulletins and to obtain better constrained hypocenter relocations - about 10 km apart - for the two mainshocks, as well as location estimates for 20 aftershocks. The recording of the 1951 Jaen earthquake doublet at a network of common stations allows a straightforward quality control of our digitized seismograms by waveform comparison. We estimate faulting parameters of the two mainshocks from regional moment tensor inversion, obtaining moment magnitude M-w 5.2 and M-w 5.3, respectively, depth of 20 km, and strike-slip faulting mechanisms with minor normal slip component and northeast southwest oriented T axes. Deconvolution of body waveforms from an M-w 4.4 aftershock yields simple triangular source time functions for both main events, with durations close to 1 sec. While several previous studies had difficulties in characterizing these earthquakes, partially describing them as unusual intermediate deep focus events, we propose simple shear faulting sources in the middle crust and faulting geometries consistent with the regional seismotectonic framework.
ABSTRACT On July 23rd 1930, a strong earthquake (Ms=6.6) occurred in the Irpinia region, the most... more ABSTRACT On July 23rd 1930, a strong earthquake (Ms=6.6) occurred in the Irpinia region, the most seismically active area of the Southern Apennines (Italy). Destructive effects were reported in a wide area of about 6300 km2, causing more than 1400 victims. The same region had already been struck by several large earthquakes in 1456 (Me=6.9), 1694 (Me=6.0), 1702 (Me=6.0), 1732 (Me=6.6), and 1910 (Me=5.9). Other major events have hit Irpinia since the 1930 earthquake, including that of 1962 (Mw = 6.2) and the catastrophic one of 23 Nov 1980 (Mw = 6.9). Formerly published studies concerning the 1930 Irpinia event include analysis of macroseismic data, first motion polarities and a single station waveforms. By using the available bulletins and the historical seismograms, in our previous study we estimated the source parameters in terms of focal mechanism, magnitude, hypocentral location and seismic moment. Fault length, rupture velocity and other characteristics are also obtained by performing body waveform inversion for moment rate retrieval. These results are here used to study the static stress transfer between the 1930 Irpinia earthquake and subsequent large events like the 1962, and 1980 ones in order to investigate the possible fault interaction and earthquake triggering. To improve our knowledge on the region of the1930 event, we also study the Coulomb stress field related to E-W trending seismogenic sources, responsible for the main sub-events of the multiple 1456 historical earthquake. Modelling of such effects is useful both to obtain more information on seismogenic sources and to gain an improved evaluation of seismic hazard in this region. Submitted Università di Perugia, Perugia, Italy 3.2. Tettonica attiva
ABSTRACT The December 28th, 1908 M 7.1 Messina earthquake is one of the largest instrumentally re... more ABSTRACT The December 28th, 1908 M 7.1 Messina earthquake is one of the largest instrumentally recorded earthquake in the Central Mediterranean and among the first to be recorded by seismological and geodetic instruments. Starting from the evaluation of the present-day geodetically-observed active deformation in the Messina Straits region, we revised the available data on the interseismic and coseismic deformation in the Messina Straits region.GPS observations and terrestrial geodetic measurements show that the main active deformation is given by a 110-160 nstrain/yr right-lateral N-S simple shear which is scarcely consistent with the faulting geometry generally associated with the 1908 M_w=7.1 Messina earthquake. Then we use the levelling data measuring the coseismic deformation of the 1908 earthquake and historical seismograms to evaluate the whole range of faulting mechanisms allowed by the data. This analysis suggests that the available data for the 1908 earthquake allows a larger component of North-South strike slip of what hitherto considered, resolving the discrepancy with the present-day deformation pattern. Finally we discuss these new findings in the light of the present-day regional kinematics between the Calabrian and Sicilian crustal blocks.
... Ferrari G. e Pino NA; 2003: Euroseismos 2002-2003, a project for saving and studying historic... more ... Ferrari G. e Pino NA; 2003: Euroseismos 2002-2003, a project for saving and studying historical seismograms in the euro-mediterranean area. ... E SIMBRUINI (APPENNINO CENTRALE) A. Frepoli(1), NM Pagliuca (1), C. Maggi(1,2), F. Marra(1), M. Pirro(1) e A. Marchetti(1) (1 ...
Numero giornaliero di terremoti Cumulativa del numero di terremoti Aggiornamento: 11/11/15 09:24:... more Numero giornaliero di terremoti Cumulativa del numero di terremoti Aggiornamento: 11/11/15 09:24:17 (ora locale) da http://iside.rm.ingv.it/ 0.0 ≤ M ! 2.0 2.0 ≤ M ! 3.0 3.0 ≤ M ! 4.0 4.0 ≤ M ! 5.0 M ≥ 5.0
Uploads
Papers by B. Palombo