... NISIO STEFANIA * & SALVATI ROBERTO ** *APAT-Roma **Dipartimento Scienze Geologiche, Unive... more ... NISIO STEFANIA * & SALVATI ROBERTO ** *APAT-Roma **Dipartimento Scienze Geologiche, Università Roma TRE ... è immediato né intuitivo, tanto più perché gli Autori ritengono che la definizione delle modalità di innesco e di sviluppo della deformazione siano un parametro ...
at ta an nz za ar ri it ti i 3 , , V V.. R Re ea al le e 1 (Analisi biostratigrafiche) A A.. D Di... more at ta an nz za ar ri it ti i 3 , , V V.. R Re ea al le e 1 (Analisi biostratigrafiche) A A.. D Di i G Gi iu ul li io o 4 (Analisi petrografiche) G G.. V Va an nn nu uc cc ci i 5 (Sismicità)
Bigazzi et al.(2000) report new geochronological data (fission-track dating) from two volcanic as... more Bigazzi et al.(2000) report new geochronological data (fission-track dating) from two volcanic ash marker layers interbedded in Upper Miocene (Messinian)-Early Pleistocene sedimentary sequences in three sites from the Adriatic side of the Italian peninsula. As Bigazzi and co-authors correctly state, these data have the potential for the establishment of sound regional chronostratigraphic markers. Unfortunately, the entire stratigraphic framework in which the new fission-track analyses are considered by Bigazzi et al.(2000) ...
In recent years, the study of anthropogenic sinkholes in densely urbanized areas has attracted th... more In recent years, the study of anthropogenic sinkholes in densely urbanized areas has attracted the attention of both researchers and land management entities. The city of Naples (Italy) has been frequently affected by processes generating such landforms in the last decades: for this reason, an update of the sinkhole inventory and a preliminary susceptibility estimation are proposed in this work. Starting from previous data, not modified since 2010, a total of 270 new events occurred in the period February 2010–June 2021 were collected through the examination of online newspapers, local daily reports, council chronicle news and field surveys. The final consistence of the updated inventory is of 458 events occurred between 1880 and 2021, distributed through time with an increasing trend in frequency. Spatial analysis of sinkholes indicates a concentration in the central sector of the city, corresponding to its ancient and historic centre, crossed by a dense network of underground tunnels and cavities. Cavity-roof collapse is confirmed as one of the potential genetic types, along with processes related to rainfall events and service lines damage. A clear correlation between monthly rainfall and the number of triggered sinkholes was identified. Finally, a preliminary sinkhole susceptibility assessment, carried out by Frequency Ratio method, confirms the central sector of city as that most susceptible to sinkholes and emphasizes the predisposing role of service lines, mostly in the outermost areas of the city.
... M. Nuria: 19) Torbiditi silicoclastiche messiniane; 20) Marne a orbulina; 21) Unità argilloso... more ... M. Nuria: 19) Torbiditi silicoclastiche messiniane; 20) Marne a orbulina; 21) Unità argilloso-marnosa; 22) Calcareniti a punti rossi; 23) Calcareniti ... tettonici collegati a crisi sismiche, che avrebbero favorito la risalita delle acque di un circuito termominerale profondo attraverso ...
Karst phenomena in the Abruzzo region are widespread present due to the diffusion of carbonatic o... more Karst phenomena in the Abruzzo region are widespread present due to the diffusion of carbonatic outcrops, instead the sinkholes phenomena strict sense in the plain areas are still less known and studied. Several landforms, in the past supposed to be related to karst phenomena, could be due to deep piping phenomena triggered by sudden and catastrophic events. Ancient chronicles indicate that these phenomena are related to high magnitude seis-mic events; examples are the collapses during the 1703 Aquila earthquake and 1915 Avezzano earthquakes in the Fucino Plain. Piping sinkholes could have been triggered by these ancient earthquakes, sub-circular ponds, that lie in several plains of the Abruzzo region, could represent these piping sinkholes actually water filled. Areas affected by these phenomena are intermountains tectonic valleys bordered by direct or strike-slip regional faults and filled by thick alluvial deposits (i.e. Sulmona and Fucino plains). In some river valleys, showing ...
INTRODUZIONE D a alcuni anni sono stati condotti dal Dipartimento Difesa del Suolo-Servizio Geolo... more INTRODUZIONE D a alcuni anni sono stati condotti dal Dipartimento Difesa del Suolo-Servizio Geologico d'Italia (ISPRA) studi e ricerche riguardo i fenomeni di sprofondamento (sinkholes) che hanno in-teressato diverse aree del territorio nazionale. Nel 2002 è stato avviato un progetto di ricerca a scala nazionale, il "Progetto sin-khole", che ha come obiettivo il censimento e lo studio delle varie tipologie di sprofonda-mento. Il progetto Sinkhole è il primo tentativo di censimento dei sinkholes a scala naziona-le, ed ha suscitato partecipazione da parte del mondo scientifi co. Infatti, nel 2004 e nel 2009, in tale ambito, sono stati organizzati due workshop internazionali che hanno ri-scosso grande successo e partecipazione da parte di specialisti ed esperti del settore. Sono stati, sinora, censiti e studiati dall'I-SPRA più di 2000 casi di sprofondamento na-turale (fi g. 1) , avvenuti in aree di pianura, a cui si aggiungono alcune migliaia di spro-fondamenti antro...
I sinkholes sono sprofondamenti ampi anche centinaia di metri che minacciano i centri urbani e le... more I sinkholes sono sprofondamenti ampi anche centinaia di metri che minacciano i centri urbani e le aree naturali, verificandosi in modo spesso improvviso e devastante. Molte aree di pianura italiane sono interessate da questi fenomeni (la Pianura Pontina e la valle del Tevere ne costituiscono esempi), varie pianure interne e conche intramontane delle zone appenniniche (Umbria,
E. La Posta, S. Nisio & F. Papasodaro, Reference stratigraphic units for Plio-Quaternary deposits... more E. La Posta, S. Nisio & F. Papasodaro, Reference stratigraphic units for Plio-Quaternary deposits mapping in CARG. Within the new geological Map of Italy at the 1:50.000 scale, unconformity bounded stratigraphic units have mostly been adopted, in the Central-Southern part of the country, to represent Quaternary continental deposits. However, field geologists applied different criteria for their classification because of both the lack of prescriptions by stratigraphic codes and the absence of previous experience with such units in the Italian setting. In some areas UBSU have been used as tools that allow us to synthesize: in a regional framework only a few units, bounded by disconformity related to important climatic events, have been identified. In other areas, due to the complex recent geological evolution and to poor correlation elements, UBSU have allowed only for local synthesis. Parole chiave: Unità stratigrafiche, UBSU, depositi del Quaternario, Carta geologica d'Italia. P...
The hilly belt located between Mt Conero to the North and the low valley of the Sangro river to t... more The hilly belt located between Mt Conero to the North and the low valley of the Sangro river to the South, is modelled over Plio-Pleistocene marine deposits. The latter, as a whole, are disposed according to an eastward dipping gentle monocline. Remarkable sinsedimentary tectonics conditioned the morphologic structure of the basin and its depositional settings, as well as the marine sequence. Netwithstanding its overall unitariness it shows various differentiations, both vertically and horizontally, with sedimentary and angular unconformities of considerable extent. [...]
S~Y. Nonlinear model simulation of coupling between heave-roll and pitchroll ship mot.ions is con... more S~Y. Nonlinear model simulation of coupling between heave-roll and pitchroll ship mot.ions is considered by means of the asymptotic method of nonlinear mechanics. The purely vertical motion and vertical-angular motion and _their stability are studied.
... FACCENNA et al., 1993; NOLASCO, 1998; CIOTOLI et al., 2000; NISIO, 2003). ... I laghi di S. A... more ... FACCENNA et al., 1993; NOLASCO, 1998; CIOTOLI et al., 2000; NISIO, 2003). ... I laghi di S. Antonio (Poggibonsi e Colle Val d'Elsa - SI): Nella parte settentrionale della Montagnola Senese, sull'altopiano di S. Antonio tra i corsi d'acqua Elsa e Staggia, si rinvengono quattro cavità ...
In this work a geochemical and geological study was carried out on the Fucino plain (central Ital... more In this work a geochemical and geological study was carried out on the Fucino plain (central Italy) to understand the relationship between tectonic activity, groundwater chemistry and circulation and soil gas emissions , in order to improve our knowledge about the genesis of the sinkholes in terms of gas-water-rock interaction . Sinkholes formation in the Fucino plain have started since1876, and this process is still active in numerous places in the plain (the most recent collapse dates back to the April 2009). This investigation that involves geology, geomorphology, soil gas survey, isotope and hydro-geochemistry) has allowed to determine the formation of the sinkholes of the Fucino plain as a result of the contribution of different processes: karst dissolution, liquefaction of mediumfine alluvial sediments, piping and/or chemical dissolution of quaternary sediments. Nel presente lavoro la piana del Fucino (Italia centrale) è stata oggetto di studi geologici e geochimici volti a stabilire le relazioni tra tettonica, chimica e circolazione delle acque del sottosuolo e gas nel suolo al fine di migliorare le conoscenze sull’origine dei fenomeni di sprofondamento (sinkholes) in termini di processi di interazione acqua-gas-roccia. La piana è infatti interessata da numerosi sinkholes, i più antichi originatesi successivamente al 1876, ma tuttora in formazione (lo sprofondamento più recente risale all’aprile del 2009). Le indagini effettuate (geologiche, geomorfologiche, prospezione dei gas del suolo, idrogeochimiche ed isotopiche) hanno permesso di attribuire al fenomeno una genesi non semplicemente carsica, ma in parte dovuta a liquefazione degli orizzonti alluvionali di granulometria medio-fine, in parte a un processo di risalita (piping) di fluidi aggressivi che possono generare sifonamento (asportazione meccanica di particelle solide) e/o dissoluzione chimica della copertura quaternaria.
... NISIO STEFANIA * & SALVATI ROBERTO ** *APAT-Roma **Dipartimento Scienze Geologiche, Unive... more ... NISIO STEFANIA * & SALVATI ROBERTO ** *APAT-Roma **Dipartimento Scienze Geologiche, Università Roma TRE ... è immediato né intuitivo, tanto più perché gli Autori ritengono che la definizione delle modalità di innesco e di sviluppo della deformazione siano un parametro ...
at ta an nz za ar ri it ti i 3 , , V V.. R Re ea al le e 1 (Analisi biostratigrafiche) A A.. D Di... more at ta an nz za ar ri it ti i 3 , , V V.. R Re ea al le e 1 (Analisi biostratigrafiche) A A.. D Di i G Gi iu ul li io o 4 (Analisi petrografiche) G G.. V Va an nn nu uc cc ci i 5 (Sismicità)
Bigazzi et al.(2000) report new geochronological data (fission-track dating) from two volcanic as... more Bigazzi et al.(2000) report new geochronological data (fission-track dating) from two volcanic ash marker layers interbedded in Upper Miocene (Messinian)-Early Pleistocene sedimentary sequences in three sites from the Adriatic side of the Italian peninsula. As Bigazzi and co-authors correctly state, these data have the potential for the establishment of sound regional chronostratigraphic markers. Unfortunately, the entire stratigraphic framework in which the new fission-track analyses are considered by Bigazzi et al.(2000) ...
In recent years, the study of anthropogenic sinkholes in densely urbanized areas has attracted th... more In recent years, the study of anthropogenic sinkholes in densely urbanized areas has attracted the attention of both researchers and land management entities. The city of Naples (Italy) has been frequently affected by processes generating such landforms in the last decades: for this reason, an update of the sinkhole inventory and a preliminary susceptibility estimation are proposed in this work. Starting from previous data, not modified since 2010, a total of 270 new events occurred in the period February 2010–June 2021 were collected through the examination of online newspapers, local daily reports, council chronicle news and field surveys. The final consistence of the updated inventory is of 458 events occurred between 1880 and 2021, distributed through time with an increasing trend in frequency. Spatial analysis of sinkholes indicates a concentration in the central sector of the city, corresponding to its ancient and historic centre, crossed by a dense network of underground tunnels and cavities. Cavity-roof collapse is confirmed as one of the potential genetic types, along with processes related to rainfall events and service lines damage. A clear correlation between monthly rainfall and the number of triggered sinkholes was identified. Finally, a preliminary sinkhole susceptibility assessment, carried out by Frequency Ratio method, confirms the central sector of city as that most susceptible to sinkholes and emphasizes the predisposing role of service lines, mostly in the outermost areas of the city.
... M. Nuria: 19) Torbiditi silicoclastiche messiniane; 20) Marne a orbulina; 21) Unità argilloso... more ... M. Nuria: 19) Torbiditi silicoclastiche messiniane; 20) Marne a orbulina; 21) Unità argilloso-marnosa; 22) Calcareniti a punti rossi; 23) Calcareniti ... tettonici collegati a crisi sismiche, che avrebbero favorito la risalita delle acque di un circuito termominerale profondo attraverso ...
Karst phenomena in the Abruzzo region are widespread present due to the diffusion of carbonatic o... more Karst phenomena in the Abruzzo region are widespread present due to the diffusion of carbonatic outcrops, instead the sinkholes phenomena strict sense in the plain areas are still less known and studied. Several landforms, in the past supposed to be related to karst phenomena, could be due to deep piping phenomena triggered by sudden and catastrophic events. Ancient chronicles indicate that these phenomena are related to high magnitude seis-mic events; examples are the collapses during the 1703 Aquila earthquake and 1915 Avezzano earthquakes in the Fucino Plain. Piping sinkholes could have been triggered by these ancient earthquakes, sub-circular ponds, that lie in several plains of the Abruzzo region, could represent these piping sinkholes actually water filled. Areas affected by these phenomena are intermountains tectonic valleys bordered by direct or strike-slip regional faults and filled by thick alluvial deposits (i.e. Sulmona and Fucino plains). In some river valleys, showing ...
INTRODUZIONE D a alcuni anni sono stati condotti dal Dipartimento Difesa del Suolo-Servizio Geolo... more INTRODUZIONE D a alcuni anni sono stati condotti dal Dipartimento Difesa del Suolo-Servizio Geologico d'Italia (ISPRA) studi e ricerche riguardo i fenomeni di sprofondamento (sinkholes) che hanno in-teressato diverse aree del territorio nazionale. Nel 2002 è stato avviato un progetto di ricerca a scala nazionale, il "Progetto sin-khole", che ha come obiettivo il censimento e lo studio delle varie tipologie di sprofonda-mento. Il progetto Sinkhole è il primo tentativo di censimento dei sinkholes a scala naziona-le, ed ha suscitato partecipazione da parte del mondo scientifi co. Infatti, nel 2004 e nel 2009, in tale ambito, sono stati organizzati due workshop internazionali che hanno ri-scosso grande successo e partecipazione da parte di specialisti ed esperti del settore. Sono stati, sinora, censiti e studiati dall'I-SPRA più di 2000 casi di sprofondamento na-turale (fi g. 1) , avvenuti in aree di pianura, a cui si aggiungono alcune migliaia di spro-fondamenti antro...
I sinkholes sono sprofondamenti ampi anche centinaia di metri che minacciano i centri urbani e le... more I sinkholes sono sprofondamenti ampi anche centinaia di metri che minacciano i centri urbani e le aree naturali, verificandosi in modo spesso improvviso e devastante. Molte aree di pianura italiane sono interessate da questi fenomeni (la Pianura Pontina e la valle del Tevere ne costituiscono esempi), varie pianure interne e conche intramontane delle zone appenniniche (Umbria,
E. La Posta, S. Nisio & F. Papasodaro, Reference stratigraphic units for Plio-Quaternary deposits... more E. La Posta, S. Nisio & F. Papasodaro, Reference stratigraphic units for Plio-Quaternary deposits mapping in CARG. Within the new geological Map of Italy at the 1:50.000 scale, unconformity bounded stratigraphic units have mostly been adopted, in the Central-Southern part of the country, to represent Quaternary continental deposits. However, field geologists applied different criteria for their classification because of both the lack of prescriptions by stratigraphic codes and the absence of previous experience with such units in the Italian setting. In some areas UBSU have been used as tools that allow us to synthesize: in a regional framework only a few units, bounded by disconformity related to important climatic events, have been identified. In other areas, due to the complex recent geological evolution and to poor correlation elements, UBSU have allowed only for local synthesis. Parole chiave: Unità stratigrafiche, UBSU, depositi del Quaternario, Carta geologica d'Italia. P...
The hilly belt located between Mt Conero to the North and the low valley of the Sangro river to t... more The hilly belt located between Mt Conero to the North and the low valley of the Sangro river to the South, is modelled over Plio-Pleistocene marine deposits. The latter, as a whole, are disposed according to an eastward dipping gentle monocline. Remarkable sinsedimentary tectonics conditioned the morphologic structure of the basin and its depositional settings, as well as the marine sequence. Netwithstanding its overall unitariness it shows various differentiations, both vertically and horizontally, with sedimentary and angular unconformities of considerable extent. [...]
S~Y. Nonlinear model simulation of coupling between heave-roll and pitchroll ship mot.ions is con... more S~Y. Nonlinear model simulation of coupling between heave-roll and pitchroll ship mot.ions is considered by means of the asymptotic method of nonlinear mechanics. The purely vertical motion and vertical-angular motion and _their stability are studied.
... FACCENNA et al., 1993; NOLASCO, 1998; CIOTOLI et al., 2000; NISIO, 2003). ... I laghi di S. A... more ... FACCENNA et al., 1993; NOLASCO, 1998; CIOTOLI et al., 2000; NISIO, 2003). ... I laghi di S. Antonio (Poggibonsi e Colle Val d'Elsa - SI): Nella parte settentrionale della Montagnola Senese, sull'altopiano di S. Antonio tra i corsi d'acqua Elsa e Staggia, si rinvengono quattro cavità ...
In this work a geochemical and geological study was carried out on the Fucino plain (central Ital... more In this work a geochemical and geological study was carried out on the Fucino plain (central Italy) to understand the relationship between tectonic activity, groundwater chemistry and circulation and soil gas emissions , in order to improve our knowledge about the genesis of the sinkholes in terms of gas-water-rock interaction . Sinkholes formation in the Fucino plain have started since1876, and this process is still active in numerous places in the plain (the most recent collapse dates back to the April 2009). This investigation that involves geology, geomorphology, soil gas survey, isotope and hydro-geochemistry) has allowed to determine the formation of the sinkholes of the Fucino plain as a result of the contribution of different processes: karst dissolution, liquefaction of mediumfine alluvial sediments, piping and/or chemical dissolution of quaternary sediments. Nel presente lavoro la piana del Fucino (Italia centrale) è stata oggetto di studi geologici e geochimici volti a stabilire le relazioni tra tettonica, chimica e circolazione delle acque del sottosuolo e gas nel suolo al fine di migliorare le conoscenze sull’origine dei fenomeni di sprofondamento (sinkholes) in termini di processi di interazione acqua-gas-roccia. La piana è infatti interessata da numerosi sinkholes, i più antichi originatesi successivamente al 1876, ma tuttora in formazione (lo sprofondamento più recente risale all’aprile del 2009). Le indagini effettuate (geologiche, geomorfologiche, prospezione dei gas del suolo, idrogeochimiche ed isotopiche) hanno permesso di attribuire al fenomeno una genesi non semplicemente carsica, ma in parte dovuta a liquefazione degli orizzonti alluvionali di granulometria medio-fine, in parte a un processo di risalita (piping) di fluidi aggressivi che possono generare sifonamento (asportazione meccanica di particelle solide) e/o dissoluzione chimica della copertura quaternaria.
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