Govi M. & Maraga F., 2006, Inundation on the Po Plain caused by levee breaches.,
1 (2006): 167–176.,
Tropeano D., Turconi L., 2006, Il dissesto idrogeologico nei bacini montani. Come prevenire e ridurre i pericoli e i danni dei cosidetti rischi naturali,
47 (2006): 51–56.,
Calcaterra D., Cappelletti P., de Gennaro M., Langella A., Parise M. & Sammarco M., 2006, Sul ritrovamento a Gallipoli (LE) di alcuni elementi architettonici in piperno.,
(2006): 345–350.,
Lollino P. & Reina A., 2006, Analisi agli elementi distinti di un fronte di cava in calcare fessurato.,
4 (2006): 237–245.,
Delle Rose M., Mattioli I.,, 2006, Evoluzione recente del sistema carsico di Badisco.,
Thalassia salentina (Online) 29s (2006): 173–193.,
Delle Rose M., 2006, Mediterranean Pliocene events in the Salento geological record.,
Thalassia salentina (Online) 26 (2006): 77–99.,
Abstract
During the Pliocene age, the past Mediterranean sea became similar to the present and the ...
During the Pliocene age, the past Mediterranean sea became similar to the present and the European and African continents progressively acquired their presentday
contours. The species turnover accelerated as high latitude temperatures dropped, the ice sheets gathered and the sea circulation changed their form patterns.
In the lower Pliocene, the Salento peninsula was the central sector of an isolated carbonate platform far from the continent. On the contrary, at the beginning of the
Quaternary age the platform was just connected to the Apennines Chain by means of a shallow interposed basin (the Bradanic Trough). These paleoenvironmental
and paleogeographic changes, occurred between 5.3 and 1.6 My, have been the local setting reorganisation in a context of large-scale Mediterranean evolution
marked by a number of geological events.
The Salento Pliocene Series is represented by the follow lithological facies_ (1) chaotic assemblage, (2) marlstones, (3) glauconitic siltstones, (4) phosphatized
calcirudite, (5) calcarenites and limestones containing, at the top, the first appearance of Arctica islandica. They can be respectively linked to_ (1) the late
Messinian Mediterranean drawdown, (2) the deepest paleo-depth of the early Pliocene inundation, (3) a lower-middle Pliocene stage of very low rate of
sedimentation, (4) the about 2.5 My cooling phase as well as southern Apennines middle-upper Pliocene tectonic strain, and (5) the Neogene/Quaternary boundary
arrival of the "northern guests".
M. Polemio, V. Dragone, P.P. Limoni, D. Mitolo, F. Santaloia, 2006, The degradation hazard of groundwater resources of the Metaponto coastal plain (Southern Italy),
Ingegneria e geologia degli acquiferi 21 (2006): 37–46.,
Abstract
During the last century the land reclamation works, the built-up of dams and modern irrigation ...
During the last century the land reclamation works, the built-up of dams and modern irrigation systems, the farm and industrial activities, and the overexploitation of the wells, associated to several periods of drought, have deeply modified the quantity and the chemical state of the groundwater resources of the Metaponto coastal plain (Southern
Italy). The degradation of the groundwater systems seems to be increased with the time as shown by the piezometric trends (1927-1990) and by the chemical-physical data (1990-2003). The chemical-physical state of the groundwater has been defined according to the hydrochemical classification proposed by an Italian legislative decree.
Vassallo N., Franzoni F., 2006, Il Naviglio di Ivrea (sec. XV-XX): un profilo attraverso le fonti documentarie,
148 (2006): 17–37.,
Sorriso-Valvo M. & Terranova O., 2006, The Calabrian fiumara,
143 (2006): 105–121.,
C. Apollaro, C. Artusa, C. Franco, R. De Rosa, Polemio M., R. Virga, 2006, Studio geochimico delle acque sorgive dei bacini del torrente Vaccuta e del fiume Abatemarco (Calabria nord-occidentale),
Italian journal of engineering geology and environment (Testo stamp.) 2 (2006): 59–75.,
Abstract
The results of the geochemical investigation of 54 springs flowing into the drainage basins of ...
The results of the geochemical investigation of 54 springs flowing into the drainage basins of the river Abatemarco and of the stream Vaccuta (northern Calabnia) are reported in this paper. Considerations on the chemical composition of the waters, hydrogeological information and six thematic maps were made allowing to identify three main aquifers_ a deep aquifer in equilibrium with carbonate rocks, a superficial metamorphic aquifer and a valley aquifer constituted by conglomerates and sands. The presence of sulphate waters, not related to the surface geological setting and their alignment along preferential lines, indicates the ascent of deep fluids derived by the dissolution of evaporite layers.
Parise M., 2006, Atlante delle Grotte della Campania.,
3(1) (2006): 111–113.,
Zaina G., Tropeano D., Turconi L., 2006, Colate detritiche del luglio 2006 in Alta Val Camonica (BS).,
118-3 (2006): 25–35.,
Savio G. & Turconi L., 2006, Eventi di colata detritica osservati nellestate 2006 in Italia Nord-occidentale.,
118-3 (2006): 37–46.,
Pogliano A., Ferrero E., Maraga F., 2006, La Foresta ritrovata.,
32 (2006): 8–12.,
Gabriele S., Chiaravalloti F., Cotecchia V., 2006, Levento pluviometrico del 22 ottobre 2005 in Puglia. Una ricostruzione sperimentale mediante Meteosat-8 e modello afflussi deflussi a parametri distribuiti.,,
4 (2006): 37–48.,
Lollino G., Audisio C., 2006, UNESCO World Heritage sites in Italy affected by geological problems, specifically landslide and flood hazard.,
Landslides (Berl., Print) 3 (2006): 311–321.,
Abstract
A National Research Council, Research Institute for
Hydrogeological Protection (IRPI) study on Italian monuments
included in the ...
A National Research Council, Research Institute for
Hydrogeological Protection (IRPI) study on Italian monuments
included in the UNESCO World Heritage List has revealed that
many are affected by geological, geomorphological, and engineering
geological problems. These monuments are static entities set in
an environment that often manifests highly dynamic processes. As
part of the efforts to protect sites of cultural and natural heritage,
this study has applied a preliminary and empirical Geographical
Information System-based method developed to characterize the
environmental hazards at the sites where the monuments are
located. Because the study of hydrogeological degradation falls
within the province of IRPI, this hazard zoning focuses on river
and mountain slope dynamics specifically concerning landslides
and floods.
Giulietto W. & Luino F., 2006, Utilizzo di unanalisi multidisciplinare per le delimitazione delle aree potenzialmente inondabili_ il caso del torrente Sangone presso la confluenza con il Fiume Po (Provincia di Torino).,
4 (2006): 57–64.,
Sala S. & Parise M., 2006, Facing environmental problems in karst areas of developing countries_ the case study of Dajti – Mali me Gropa (Albania).,
8 (2006).,
Garfì G., Bruno D.E., Calcaterra D. & Parise M., 2006, Fan morphodynamics and slope instability in the Mucone River basin (Sila Massif, southern Italy): significance of weathering and role of land use changes.,
8 (2006).,
Convertini A., Parise M. & Spilotro G., 2006, Sea level and karst morphologies correlations as a tool in the assessment of the karst hazard.,
8 (2006).,
Calcaterra D., Croce C., De Luca Tupputi Schinosa F., Di Martire D., Parise M., Ramondini M., Borrelli E., Salzano M. & Serricchio A., 2006, The Colle Lapponi Piano Ovetta landslide (Agnone, Molise, Italy), an example of rainfall-induced reactivation in weathered structurally complex materials.,
8 (2006).,
Petrucci O. & Pasqua A.A., 2006, L’inventario delle opere di sistemazione e bonifica fluviale effettuate nel 900 nella provincia di Cosenza.,
Quaderni di Idronomia montana 26 (2006): 205–215.,
Abstract
Si presentano i primi risultati di una ricerca storica attualmente in corso
nell'ambito di un accordo ...
Si presentano i primi risultati di una ricerca storica attualmente in corso
nell'ambito di un accordo di collaborazione fra il CNR-IRPI, l'ODA
(Osservatorio di Documentazione Ambientale dell'UNICAL) e il Genio Civile
di Cosenza. In virtù di tale accordo il CNR-IRPI ha acquisito il settore dell'archivio
storico del Genio Civile di Cosenza riguardante le opere di sistemazione e
bonifica fluviale realizzate da quest'ultimo Ente, nel periodo 1899-1984, nella
provincia cosentina (6464 kmq, 155 comuni). La nota propone la metodologia di
archiviazione dei dati a scala di bacino mediante tecnologie di tipo GIS e presenta
alcune semplici elaborazioni a scala provinciale dei dati raccolti.
Bruno E., Calcaterra D. & Parise M., 2006, Coastline evolution controlled by development of sinkholes, and likely effects on the anthropogenic environment.,
8 (2006).,
Abstract
04700, SRef-ID: 1607-7962/gra/EGU06-A-04700.
...
04700, SRef-ID: 1607-7962/gra/EGU06-A-04700.
Brinkmann R., Dye D. & Parise M., 2006, Analysis of sinkhole distribution in the Tampa Bay area, Hillsborough County, Florida.,
8 (2006).,
Abstract
05343, SRef-ID: 1607-7962/gra/EGU06-A-05343.
...
05343, SRef-ID: 1607-7962/gra/EGU06-A-05343.
Delle Rose M; Giuri F; Guastella P; Parise M; Sammarco M, 2006, Aspetti archeologici e condizioni geologico-morfologiche degli antichi acquedotti pugliesi. L’esempio dell’Acquedotto del Triglio nell’area tarantina.,
Opera Ipogea 8 (2006): 33–50.,
Abstract
The Apulia region, in southern Italy, hosts several evidence of ancient aqueducts dating back to ...
The Apulia region, in southern Italy, hosts several evidence of ancient aqueducts dating back to the roman and medieval age. The karst territory of Apulia, where, due to the geological and morphological features of the region, the presence of water at the ground is extremely rare forced man to look for water supplies and to collect water since the establishment of the very first human settlements in the area. This explains the presence of many Apulian aqueducts, covering the entire region, from the Dauno Apennine (Bovino, Torremaggiore, Lucera), to the Bari province (Canosa di Puglia, Gravina in Puglia), down to Salento Peninsula (Brindisi, Gallipoli). Within this complex framework, the present article examines the geological and morphological setting in the Taranto area, where two remarkable aqueducts are present_ Saturo and Triglio. In particular, the attention will be here focused on the Triglio aqueduct, due to the following reasons_ i) continuity in the use of the structure; ii) good state of preservation of the aqueduct; iii) availability of many historical documents.
The Triglio aqueduct takes origin from the southern slope of the Murge Plateau north of Taranto. It is formed by six branches, that follow the course of the typical fluvial-karst valleys of the area (locally called gravine). The branches join near the S. Michele Church to form the main tunnel. The overall aqueduct is about 18 km-long, and has a mostly subterranean course. The final part, 3 km-long, just before entering the town of Taranto, has, on the other hand, an external course, marked by more than 200 arches.
Geologically, the local setting is made of a limestone bedrock of Cretaceous age, that is overlaid by Pliocene-Pleistocene calcarenites and marly clays. Two aquifers characterize the hydrogeology of the Taranto area_ a shallow aquifer, contained within the calcarenites, and resting over the underlying impervious clays; and a deep aquifer in the Cretaceous bedrock. Development of the Triglio aqueduct has to be related to the shallow aquifer, and to outflow of water at the contact between calcarenites and clays. Starting from these observations, in ancient times the work to realize the subterranean aqueduct began.
In addition to the above considerations, a detailed analysis of the historical documents, and of the archaeological researches in the area as well, is presented. The final part of the article provides some preliminary considerations about dating of the hydraulic work, based upon the previously considered evidence.
Brooks R., Florea L., Turner T. & Parise M., 2006, Le voragini catastrofiche della Florida,
Speleologia (Bologna) 53 (2006): 56–62.,
Abstract
anno XXVI, dicembre 2006. ...
anno XXVI, dicembre 2006.
Calò F. & Parise M., 2006, Evaluating the human disturbance to karst environments in southern Italy.,
Acta carsologica (Spletna izd.) 35(2) (2006): 47–56.,
Pagliarulo R., Trizzino R., 2006, Erosion and weathering phenomena within the landslide susceptibility assessment of the northwestern Apulian hills (South Italy).,
8 (2006).,
Abstract
Vol 8, 04669. EGU 06 Wien
...
Vol 8, 04669. EGU 06 Wien
Pagliarulo R., Reina A., Trizzino R., Valletta S., 2006, Analisi delle modificazioni del territorio connesse ai siti inquinati in territori urbani(brownfields): il caso dell’ex Fibronit di Bari.,
Giornale di geologia applicata 4 (2006): 201–205. doi_10.1474/GGA.2006-04.0-26.0154,
DOI: 10.1474%2FGGA.2006-04.0-26.0154
Abstract
Con il termine "brownfields" si indicano una serie di aree
industriali dismesse, ubicate in zone centrali ...
Con il termine "brownfields" si indicano una serie di aree
industriali dismesse, ubicate in zone centrali di centri
urbani, abbandonate dall'evoluzione tecnologica ed
economica della produzione, sulle quali spesso grava una
realtà di degrado accompagnato quasi sempre da diffuso
inquinamento. Lo stabilimento ex-Fibronit ha rappresentato
nei 50 anni di attività (1935- 1985) una delle maggiori realtà
del Paese per la produzione di cemento-amianto. Il
complesso delle ex Officine Fibronit insiste su una
superficie di circa 9 ettari che oggi, a seguito
dell'espansione urbana degli anni '60 e '70 della città di
Bari, si trova all'interno di un'area della città a vocazione
residenziale, densamente popolata. Allo stato attuale
degrado ed abbandono più che decennale caratterizzano
l'area. Nel presente lavoro vengono illustrati i risultati
dell'analisi delle modificazioni indotte al territorio
dall'insediamento e dalle attività dello stabilimento ex-
Fibronit. Quello di Bari, purtroppo, non è un caso isolato; in
tutto il Paese, infatti, i "brownfields" rappresentano la più
pesante eredità del processo di industrializzazione stesso e
di un passato produttivo non più sostenibile
Cherubini C.; Pagliarulo R., 2006, L’attività estrattiva a Canosa di Puglia. Le risorse lapidee dall’antichità ad oggi in area mediterranea.,
GEAM. Geoingegneria ambientale e mineraria Volume Speciale (2006): 183–187.,
Abstract
The town of Canosa di Puglia is located at the northern end of the Murge ...
The town of Canosa di Puglia is located at the northern end of the Murge (Southeastern Italy) and lies on Plio-
Pleistocenic deposits, made up of calcarenites and clays. The old part of the town, built on a hypogeum maze of
anthropic origin and underground quarries, is characterized by severe instability. The presence of calcarenites
and clays helped to spread, since ancient times, the mining industry, becoming one of the most important
economic and commercial income. Between the VIII and VI century BC the pottery export was well known in
the whole Adriatic area. A large number of artificial caves dug in the calcarenitic mass are present under the
inhabited sections of the town. These caves are often affected by crumbling and collapse phenomena, with
damages to the fabric of the houses causing risk to public safety.
In this paper the data obtained from laboratory analyses of rock samples taken from two underground cavities are
discussed. The results have been related to the mineralogical and petrographical features of the calcarenites, well
known as "Tufi". The blocks of "tufi" taken directly in quarry have good technical characteristics so that they are
qualified to be used as building materials both for external and indoor panelling. On the other side, these rocks
are defined "weak rocks" and have poor values of uniaxial compressive strengths due to the high porosity and
water content. As a consequence, if these rocks are exposed to important in situ stress state, like those caused by
underground excavations, sometimes rash, they may perform unexpected collapse phenomena at pillars and
vaults of cavities. Moreover, also further factors are to take into account, such as viscous behaviours of tertiary
kind, increased by the decay of the mechanical characteristics of these rocks due to different causes.
Rossella Pagliarulo, 2006, Coastal changes and the environmental evolution of the archaeological site of Sybaris (Southern Italy).,
Geografia fisica e dinamica quaternaria (Testo stamp.) 29 (2006): 51–59.,
Abstract
In order to investigate the geological and geotechnical incidences in the disappearance of the archaeological ...
In order to investigate the geological and geotechnical incidences in the disappearance of the archaeological site of Sybaris (Southern Italy) and to define the causes of the relative land subsidence affecting the area since ancient times a research project has been carried out in the past few years. An interdisciplinary approach which includes history, archaeology, geomorphology and soil mechanics, has been used to ascertain the nature of the morphological changes. In particular, this paper represents a portion and a work in progress of the whole research after new data concerning the regional uplift and the eustatic sea level rise. Previous papers showed that the land subsidence was the result of three main components_ neotectonic, sea level changes and the compression of sediments comprising the plain, while the present paper infers that the major contribution to the settlements is due to the compression of sediments. The rates of both the tectonic uplift and the subsidence are of the same size.
Furthermore, the characteristics of the sediments are described, reconstructing their depositional environments and the evolutionary history. Numerous boreholes with continuous coring allowed a detailed examination of the litho-stratigraphic profiles along with bio-stratigraphic and chrono-stratigraphic ones, contributing to the geomorphological reconstruction of the area. The results obtained from the different analyses are in agreement and confirm each other.
Bruno G., Cherubini C., Pagliarulo R., Surgo C., Trizzino R., 2006, Valutazione della suscettività al dissesto idrogeologico della fascia pedemontana dell’Appennino Dauno_ il caso dell’abitato di Troia (Foggia),
Giornale di geologia applicata 3 (2006): 167–172. doi_10.1474/GGA.2006-03.0-22.0115,
DOI: 10.1474%2FGGA.2006-03.0-22.0115
Cavalli M., Grisotto S., 2006, Individuazione con metodi GIS delle aste torrentizie soggette a colate detritiche_ applicazione al bacino dellalto Avisio (Trento).,
26 (2006): 83–94.,
Marchi, L., Cavalli, M., Cerato, M., 2006, Documentazione di eventi alluvionali storici_ applicazione al torrente Chieppena (Trentino).,
26 (2006): 503–518.,
Busoni E. & Colica A., 2006, Influence of Land use changes on landscape factors and characteristics of a Pliocene basin.,
29 (2006): 139–152.,
Parise M. & Trocino A.,, 2006, Evaluating the loss of karst landscape due to anthropogenic activities.,
8 (2006).,
M. Polemio; P.P. Limoni; D. Mitolo; R. Virga, 2006, Il degrado qualitativo delle acque sotterranee pugliesi,
Giornale di geologia applicata 3 (2006): 25–31. doi_10.1474/GGA.2006-03.0-03.0096,
DOI: 10.1474%2FGGA.2006-03.0-03.0096
Abstract
The Apulian region is characterized by very low availability of surface water resources due to ...
The Apulian region is characterized by very low availability of surface water resources due to its karstic nature. Considerable groundwater resources are located in large and deep carbonate coastal aquifers. Groundwater is affected by two types of degradation risks_ quality and quantity degradation. The withdrawn of groundwater resources produce a
massive degradation, along the coastal aquifers, for increasing salt contamination due to sea water intrusion. At the same time, various anthropogenic polluting sources have contributed to the qualitative degradation of the resource, also in the inner areas. To the aim to evidence the evolution in action of the groundwater resources quality degradation risks, are discussed data that it have been collected from numerous surveys that have interested coastal spring and wells in the entire region. In particular, the cognitive state is reported to the systematic surveying carried out from 1995 to 2003. In such survey the piezometric levels, the specific electrical conductivity, the pH, the Eh and the concentrations of main ions together with nitrogenous species have been determined for more than 100 wells. In adding, has been analyzed the waters of some coastal spring, selected between the more important of region, because the quality of coastal spring assumes great importance for the remarkable effects hydrological and ecological equilibriums of coastal and lakes environments. The enforced Italian law (D.L. 152/1999 e D.L. 258/2000) has been used as a comparative reference, defining a synthetic picture of the qualitative state of groundwater of the Apulia Region. It is found that the pollution of groundwater is absent in narrow inner areas, placed in the recharge areas of the aquifers. From such areas the groundwater flows towards the sea, along the way acquiring a polluting load coming from ground surface. Such pollutants are discharged into the sea or into lagoons, creating ecological risks also for coastal areas of particular interest.
Zanutta A.; Baldi P.; Bitelli G.; Cardinali M.; Carrara A., 2006, Qualitative and quantitative photogrammetric tecniques for multi-temporal landslides analysis,
Annals of geophysics (Testo stamp.) 49(4/5) (2006): 1067–1080.,
Abstract
Annals of Geophisycs, Vol. 49_ 4/5, 1067-1080. ...
Annals of Geophisycs, Vol. 49_ 4/5, 1067-1080.
IOVINE G., SHERIDAN M.F. & DI GREGORIO S., 2006, Guest Editorial,
Computers & geosciences 32 (2006): 859–860.,
IOVINE G. (1), DI GREGORIO S. (2), SHERIDAN M.F. (3), 2006, Preface,
Computational geosciences (Amst.) 10 (2006): 159–160. doi_10.1007/s10596-005-9016-0,
DOI: 10.1007%2Fs10596-005-9016-0
Gullà, Giovanni (a); Mandaglio, Maria Clorinda (b); Moraci, Nicola (b), 2006, Effect of weathering on the compressibility and shear strength of a natural clay,
Canadian geotechnical journal (Print) 43 (2006): 618–625. doi_10.1139/T06-028,
DOI: 10.1139%2FT06-028
Abstract
In situ, seasonal changes expose soils to frequent wetting-drying-freezing-thawing cycles. Such processes
can favour and trigger ...
In situ, seasonal changes expose soils to frequent wetting-drying-freezing-thawing cycles. Such processes
can favour and trigger shallow instabilities controlled by the weathering process. This paper presents an experimental
study carried out to investigate the effects of the weathering process, caused by the wetting-drying-freezing-thawing
cycles, on the compressibility and shear strength of a natural clay. Several specimens were trimmed from block
samples of overconsolidated clays taken from a slope in south Calabria, Italy. Specimens were subjected to wetting-
drying-freezing-thawing cycles of different durations and then tested with standard equipment (oedometer and direct
shear). Test results show that the wetting-drying-freezing-thawing cycles caused a change in the initial microstructure
that produced a decrease in the compression index and an increase in the swelling index. Moreover, the direct shear
test results show a decrease in the peak shear strength and demonstrate that a larger reduction occurs in the first month
of weathering cycles. The intense cycles performed in the laboratory produced a decay of compressibility and a shear
strength approaching reconstituted values. The conclusions are important when choosing the shear strength parameters
required when studying shallow landsliding in clay slopes.
R. Gaudio, S. G. De Bartolo, L. Primavera, S. Gabriele and M. Veltri, 2006, Lithologic control on the multifractal spectrum of river networks.,
Journal of hydrology (Amst.) 327 (2006): 365–375. doi_10.1016/j.jhydrol.2005.11.025,
DOI: 10.1016%2Fj.jhydrol.2005.11.025
Abstract
Previous observations on some natural river networks showed the similar values of
the support fractal dimension ...
Previous observations on some natural river networks showed the similar values of
the support fractal dimension and the information entropy in basins having similar source rocks.
In the present work, lithologic control on river network multifractality is investigated through
the reconstruction of the spectra belonging to two classes of different lithology_ the plutonicmetamorphic
class and the coherent sedimentary one. Two computational methods of the
generalised fractal dimensions and multifractal spectra are illustrated and applied to river
networks of the Calabria region (Southern Italy). It is shown that an increment of both the fractal
dimensions and the Lipschitz-Ho¨lder exponents of singularity occurs when passing from a
coherent sedimentary to a plutonic-metamorphic river network. The importance of this finding
emerges from the direct link between flood hydrographs and multifractal spectra, as expressed
in the Multifractal Instantaneous Unit Hydrograph (MIUH): the increment of the multifractal
parameters produces an increment of the flood peaks.
Nardi F., Vivoni E., Grimaldi S., 2006, Investigating a floodplain scaling relation using a hydrogeomorphic delineation method.,
Water resources research 42 (2006).,
Grimaldi S., Serinaldi F., 2006, Design hyetograph analysis with 3-copula function.,
51(2) (2006): 223–238.,
Grimaldi S., Serinaldi F., 2006, Asymmetric copula in multivariate flood frequency analysis.,
Advances in water resources 29 (2006): 1155–1167.,
Rizzo V., Iodice A., 2006, Satellite differential SAR interferometry for the evaluation of effects of hydrogeological disasters_ definition of a scale for damage evaluation.,
Annals of geophysics (Testo stamp.) 49(1) (2006): 253–260.,
Arattano M., Franzi L., Marchi L., 2006, Influence of rheology on debris flow simulation.,
Natural hazards and earth system sciences (Print) 6 (2006): 519–528. doi_10.5194/nhess-6-519-2006,
DOI: 10.5194%2Fnhess-6-519-2006
Abstract
Systems of partial differential equations that include the momentum and the mass conservation equations are ...
Systems of partial differential equations that include the momentum and the mass conservation equations are commonly used for the simulation of debris flow initiation,
propagation and deposition both in field and in laboratory research. The numerical solution of the partial differential equations can be very complicated and consequently
many approximations that neglect some of their terms have been proposed in literature. Many numerical methods have been also developed to solve the equations. However we show in this paper that the choice of a reliable rheological model can be more important than the choice of the best approximation or the best numerical method to employ. A simulation of a debris flow event that occurred in 2004 in an experimental basin on the Italian Alps has been carried out to investigate this issue. The simulated results have been compared with the hydrographs recorded during the event. The rheological parameters that have been obtained through the calibration of the mathematical model have been also compared with the rheological parameters obtained through the calibration of previous events, occurred in the same basin. The simulation results show that the influence of the inertial terms of the Saint-Venant equation is much more negligible than the influence of the rheological parameters and the geometry. A methodology to quantify this influence has been proposed.
Wasowski J., Del Gaudio V., 2006, Remote sensing and ground-based geophysical techniques for recognition, characterisation and monitoring of unstable slopes.,
Engineering geology 88 (2006): 3–4.,
Keefer, D. K., Wasowski J., Del Gaudio V., 2006, Landslides induced by earthquake and volcanic activity.,
Engineering geology 86 (2006): 2–3.,
Savage W.; Wasowski J., 2006, A Plastic Flow Model for the Acquara-Vadoncello Landslide in Senerchia, Southern Italy.,
Engineering geology 83 (2006): 4–21. doi_10.1016/j.enggeo.2005.06.024,
DOI: 10.1016%2Fj.enggeo.2005.06.024
Abstract
A previously developed model for stress and velocity fields in two-dimensional Coulomb plastic materials under ...
A previously developed model for stress and velocity fields in two-dimensional Coulomb plastic materials under self-weight
and pore pressure predicts that long, shallow landslides develop slip surfaces that manifest themselves as normal faults and normal
fault scarps at the surface in areas of extending flow and as thrust faults and thrust fault scarps at the surface in areas of compressive
flow. We have applied this model to describe the geometry of slip surfaces and ground stresses developed during the 1995
reactivation of the Acquara-Vadoncello landslide in Senerchia, southern Italy. This landslide is a long and shallow slide in which
regions of compressive and extending flow are clearly identified. Slip surfaces in the main scarp region of the landslide have been
reconstructed using surface surveys and subsurface borehole logging and inclinometer observations made during retrogression of
the main scarp. Two of the four inferred main scarp slip surfaces are best constrained by field data. Slip surfaces in the toe region
are reconstructed in the same way and three of the five inferred slip surfaces are similarly constrained. The location of the basal
shear surface of the landslide is inferred from borehole logging and borehole inclinometry. Extensive data on material properties,
landslide geometries, and pore pressures collected for the Acquara-Vadoncello landslide give values for cohesion, friction angle,
and unit weight, plus average basal shear-surface slopes, and pore-pressures required for modelling slip surfaces and stress fields.
Results obtained from the landslide-flow model and the field data show that predicted slip surface shapes are consistent with
inferred slip surface shapes in both the extending flow main scarp region and in the compressive flow toe region of the Acquara-
Vadoncello landslide. Also predicted stress distributions are found to explain deformation features seen in the toe and main scarp
regions of the landslide.
