Cannon S.H., Kirkham R.M., Parise M., 2001, Wildfire-related debris-flow initiation processes, Storm King Mountain, Colorado,
Geomorphology (Amst.) 39 (2001): 171–188.,
Abstract
A torrential rainstorm on September 1, 1994 at the recently burned hillslopes of Storm King ...
A torrential rainstorm on September 1, 1994 at the recently burned hillslopes of Storm King Mountain, CO, resulted in the generation of debris flows from every burned drainage basin. Maps (1:5000 scale) of bedrock and surficial materials and of the debris-flow paths, coupled with a 10-m Digital Elevation Model (DEM) of topography, are used to evaluate the processes that generated fire-related debris flows in this setting. These evaluations form the basis for a descriptive model for fire-related debris-flow initiation.
The prominent paths left by the debris flows originated in 0- and 1st-order hollows or channels. Discrete soil-slip scars do not occur at the heads of these paths. Although 58 soil-slip scars were mapped on hillslopes in the burned basins, material derived from these soil slips accounted for only about 7% of the total volume of material deposited at canyon mouths. This fact, combined with observations of significant erosion of hillslope materials, suggests that a runoff-dominated process of progressive sediment entrainment by surface runoff, rather than infiltration-triggered failure of discrete soil slips, was the primary mechanism of debris-flow initiation. A paucity of channel incision, along with observations of extensive hillslope erosion, indicates that a significant proportion of material in the debris flows was derived from the hillslopes, with a smaller contribution from the channels.
Because of the importance of runoff-dominated rather than infiltration-dominated processes in the generation of these fire-related debris flows, the runoff-contributing area that extends upslope from the point of debris-flow initiation to the drainage divide, and its gradient, becomes a critical constraint in debris-flow initiation. Slope-area thresholds for fire-related debris-flow initiation from Storm King Mountain are defined by functions of the form Acr(tanè)3=S, where Acr is the critical area extending upslope from the initiation location to the drainage divide, and tanè is its gradient. The thresholds vary with different materials.
Santaloia F., Cotecchia F., Polemio M., 2001, Mechanics of a tectonized soil slope_ influence of boundary conditions and rainfall,
Quarterly journal of engineering geology and hydrogeology 34 (2001): 165–185.,
Abstract
The Vadoncello landslide, mobilized in December 1993 and still active, is the reactivation of a ...
The Vadoncello landslide, mobilized in December 1993 and still active, is the reactivation of a landslide which took place, within the highly tectonized soils of a turbiditic formation, after the 1980 Irpinia earthquake (Southern Italy), when it was dragged by the movements of a larger landslide body at the toe of the slope, the Serra dellAcquara landslide. The Vadoncello landslide has been studied by means of the results of comprehensive investigations and monitoring carried out within a EEC funded research project, as well as by means of successive data. Consequently the complex geological model of the slope has been defined, in which the chaotic successions of soil and rock strata are grouped into soil complexes, the location of different landslide bodies is identified within the slope (the 1993-95 Vadoncello landslide, the 1980 Vadoncello landslide and the 1980 Serra dellAcquara landslide bodies) and two hydrogeological complexes are recognized. The soil mechanical properties are shown to be very poor, the deep soils being close to gross yield and therefore prone to large plastic straining due to even limited loading changes. The soil behaviour is consequently an important factor to the slope instability. The study of the soil displacements, both at the surface and at depth, shows that the landslide is composite, being formed of a shallow rotational slide at the top of the slope, a shallow earthflow downslope and an underlying mechanism of slow and long-lasting irrecoverable movements, which are also monitored on the Serra dellAcquara landslide body, at the toe of the Vadoncello slope. These slow movements are considered to be consequent to the plastic flow of the weak clayey soils in the slopes, which may be activated by seasonal rainfall effects, by the frequent low-medium intensity seismic events occurring in the area, and also by the morphological changes resulting from the slow movements themselves. Rainfall intensity is not found to be the single direct cause of the shallow landslide reactivation, which instead is proposed to be due to the combination of the effects of the low return-period rainfalls in winter 1993 and the mechanism of slow movements active both at depth in the slope and at its toe.
Fiore S, Piccarreta G, Tateo F, Santaloia F, 2000, The Flysch Rosso shales from the southern Apennines, Italy. 2. The origin of the colour.,
Periodico di mineralogia (Testo stamp.) 69 (2000): 79–87.,
Fiore S, Piccarreta G, Santaloia F, Santarcangelo R. Tateo F, 2000, The Flysch Rosso shales from the southern Apennines, Italy. 1. Mineralogy and geochemistry,
Periodico di mineralogia (Testo stamp.) 69 (2000): 63–78.,
A. REFICE, F. BOVENGA, J. WASOWSKI, L. GUERRIERO, 2000, Using InSAR Data for Landslide Monitoring_ a Case Study from Southern Italy,
IGARSS 2000, pp. 2504–2506, Honolulu, Hawaii, USA, 24-28 July 2000,
Abstract
Use of InSAR techniques in the study of unstable slopes has been suggested in recent ...
Use of InSAR techniques in the study of unstable slopes has been suggested in recent works. However, in the case of mass movements, which typically occur in high-relief terrain and are of limited areal extent, the detection of ground surface deformation is difficult. Moreover, the presence of vegetation cover and atmospheric effects introduces coherence loss and resolution problems in the analysis of interferometric pairs. Thus, extreme care must be taken in every step of nterferometric SAR processing in order to obtain results that can be easily interpreted and be of practical utility in landslide hazard studies. We present the results of the application of InSAR and DlnSAR techniques to a landslide
test area located in the Southern Apennines. A number of SAR images was selected, whose dates coincide with periods of mass movement activity documented by in situ controls. DlnSAR processing was conducted in order to assess the potential of satellite radar data for landslide monitoring. Coarse resolution is an important limiting factor for effective information extraction. Advanced processing approaches may help to overcome this limit.
Refice, A; Bovenga, F; Wasowski, J; Guerriero, L, 2000, Use of InSAR data for landslide monitoring_ a case study from Southern Italy,
IGARSS 2000, pp. 2504–2506, Honolulu, Hawaii, USA, 24-28 July 2000,
Abstract
Use of InSAR techniques in the study of unstable slopes has been suggested in recent ...
Use of InSAR techniques in the study of unstable slopes has been suggested in recent works. However, in the case of mass movements, which typically occur in high-relief terrain and are of limited areal extent, the detection of ground surface deformation is difficult. Moreover, the presence of vegetation cover and atmospheric effects introduces coherence loss and resolution problems in the analysis of interferometric pairs. Thus, extreme care must be taken in every step of interferometric SAR processing in order to obtain results that can be easily interpreted and be of practical utility in landslide hazard studies. We present the results of the application of InSAR and DInSAR techniques to a landslide test area located in the Southern Apennines. A number of SAR images was selected, whose dates coincide with periods of mass movement activity documented by in situ controls. DInSAR processing was conducted in order to assess the potential of satellite radar data for landslide monitoring. Coarse resolution is an important limiting factor for effective information extraction. Advanced processing approaches may help to overcome this limit.
DEL GAUDIO V., WASOWSKI J., 2000, Seismic rockfall hazard in the Sele river valley, Southern Italy,
8th International Symposium on Landslides, pp. 427–432, Cardiff, UK, June 2000,
WASOWSKI J., LOLLINO G., 2000, Post-failure activity of the 1989 Caramanico landslide (Italy): implications for a road tunnel planned upslope (invited paper).,
International Conference on Geotechnical & Geological Engineering GeoEng2000, Melbourne, Australia, 19-24 November, 2000,
DEL GAUDIO V., WASOWSKI J., PIERRI P., MASCIA U., CALCAGNILE G., 2000, Gravimetric study of a retrogressive landslide in southern Italy.,
Surveys in geophysics 21 (2000): 391–406.,
Wasowski Janusz
Del Gaudio Vincenzo, 2000, Foreword to the Special Issue of the Symposium on Geophysical Investigation of Landslides and Unstable Slopes,
Surveys in geophysics 21 (2000): 331–333.,
WASOWSKI J., DEL GAUDIO V., 2000, Evaluating seismically induced mass movement hazard in Caramanico Terme (Italy).,
Engineering geology 58 (2000): 291.,
A. REFICE, L. GUERRIERO, F. BOVENGA, J. WASOWSKI, N. VENEZIANI, S. ATZORI, A. R. FERRARI, M. MARSELLA, 2000, Detecting Landslide Activity by SAR Interferometry,
ESA ERS-ENVISAT Symposium, Gothenburg, Sweden, 16-20 October 2000,
Abstract
Operational monitoring of slope instabilities by SAR Interferometry poses a number of challenges due to ...
Operational monitoring of slope instabilities by SAR Interferometry poses a number of challenges due to the limited
spatial extent of the landslide areas and rainy conditions usually associated with mass movement events. In this work we
present the results of the application of both conventional DInSAR techniques, and a point-by-point, multitemporal study
of the long-term stability of selected high-coherence objects on the ground.
The techniques were applied to selected test sites in the Central and Southern Apennines of Italy. Results obtained by
processing a number of ERS SAR images acquired over the test areas before, during and after critical events are presented.
The evaluation of the results is performed through the comparison with data from ground based techniques. The various
factors influencing the suitability of the selected data for interferometric applications, i.e. resolution, temporal and spatial
baselines, and times of acquisition, are assessed.
For one of the test sites, an application of the so-called "permanent scatterers" (PS) technique, originally proposed by
the POLIMI group, is being attempted to monitor small displacements between points exhibiting a high long-term phase
coherence and a strong and stable backscatter level.
G. Spilotro, L. Coviello, R. Trizzino, 2000, Post Failure Behaviour of Landslide Bodies,
8th ISL, Cardiff, Wales, 26-30 June 2000,
Polemio, M., 2000, Degradation risk owing to contamination and overdraft for Apulian groundwater resources (southern Italy),
Water resources management in a vulnerable environment for sustainable development, pp. 185–194, PERUGIA, November 1998,
Abstract
The remarkable and rapid socio-economic development over the past few decades has further stressed the ...
The remarkable and rapid socio-economic development over the past few decades has further stressed the Apulian hydrogeological system. The whole Apulian groundwater has undergone a twofold pollution, all originated by human action_ saline pollution evolves progressively as it affects increasingly large portions of land, biological and chemico-physical pollution is gaining importance and is mainly concentrated around urbanised areas. The latter is due to the circumstance that the aquifers are increasingly bound to become a kind of ultimate "receptacle" for domestic and industrial waste waters. In order to characterise the features of human-related pollution, data was gathered by a monitoring network-encompassing 157 wells, some of which hundred meters deep, and 19 coastal springs. Periodical water samples were taken from the network to be submitted to chemical, physical and bacteriological analyses. The effects of human activity on groundwater pollution and depletion are so characterised.
Bozzano, F.
Floris, M.
Polemio, M., 2000, An interpretation of slope dynamics in Pisticci (southern Italy),
Landslides in research, theory and practice, edited by Bromhead, E. Dixon, N. Ibsen, M. L., pp. 171–176. London_ Thomas Telford, 2000,
Terzi M.; Frisenda S.; Parise M., 2000, Studio e conservazione del sistema ecologico degli stagni temporanei endoreici del territorio di Conversano (BA),
Estimo e territorio 10 (2000): 40–48.,
PARISE M., JIBSON R.W., 2000, A seismic landslide susceptibility rating of geologic units based on analysis of characteristics of landslides triggered by the January 17, 1994, Northridge, California, earthquake,
Engineering geology 58 (2000): 251–270.,
Abstract
One of the most significant effects of the 17 January, 1994 Northridge, California earthquake (M=6.7) ...
One of the most significant effects of the 17 January, 1994 Northridge, California earthquake (M=6.7) was the triggering of thousands of landslides over a broad area. Some of these landslides damaged and destroyed homes and other tructures, blocked roads, disrupted pipelines, and caused other serious damage. Analysis of the distribution and characteristics of these landslides is important in understanding what areas may be susceptible to landsliding in future earthquakes. We analyzed the frequency, distribution, and geometries of triggered landslides in the Santa Susana 7.5? quadrangle, an area of intense seismic landslide activity near the earthquake epicenter. Landslides occured primarily in young (Late Miocene through Pleistocene) uncemented or very weakly cemented sediment that has been repeatedly folded, faulted, and uplifted in the past 1.5 million years. The most common types of landslide triggered by the earthquake were highly disrupted, shallow falls and slides of rock and debris. Far less numerous were deeper, more coherent slumps and block slides, primarily occuring in more cohesive or competent materials. The landslides in the Santa Susana quadrangle were divided into two samples_ single landslides (1502) and landslide complexes (60), which involved multiple coalescing failures of surficial material. We described landslide, morphologies by computing simple morphometric parameters (area, length, width, aspect ratio, slope angle). To quantify and rank the relative susceptibility of each geologic unit to seismic landsliding, we calculated two indices_ (1) the susceptibility index, which is the ratio (given as a percentage) of the area covered by landslide sources within a geologic unit to the total outcrop area of that unit_ and (2) the frequency index [given in landslides per square kilometer (ls/km2)], which is the total number of landslides within each geologic unit divided by the outcrop area of that unit. Susceptibility categories include very high (>2.5% landslide area or >30 1s/km2). high (1.0-2.5% landslide area or 10-30 1s/km2), moderate (0.5-1.0% landslide area or 3-10 1s/km2), and low (<0.5% landslide area and <3 1s/km2).
V. Del Gaudio, R.Trizzino, G.Calcagnile; A.Calvaruso & P.Pierri, 2000, Landsliding in seismic areas : the case of the Acquara-Vadoncello landslide (Southern Italy),
Bulletin of engineering geology and the environment (Print) 59 (2000): 23–37.,
Di Cagno, M.
Dragone, V.
Polemio, M.
Virga, R., 2000, Caratteri idrogeologici delle sorgenti circostanti il lago di Lesina (Gargano),
pp.1–20, 2000,
Sdao, F.
Polemio, M., 2000, Slope instability and the road – railway system in the Basento river valley (Southern Italy),
Mediterranean Storms Plinius Conference '99, pp. 461–472, Maratea (PZ), Italy, 2000,
Abstract
Slope instability phenomena are widespread in the geological context of Southern Apennines. The paper reports ...
Slope instability phenomena are widespread in the geological context of Southern Apennines. The paper reports the slope instability features characterized the medium valley of the Basento River, which is crossed by a major road/railroad stretch linking Potenza to Metaponto and which is not infrequently affected by instability phenomena. The attention is focused on one of the most significant landslides periodically reactivated by rainfalls which badly damaged the important railway line.
Polemio, M.
Sdao, F., 2000, Eventi di pioggia e fasi di attività di una frana nei pressi di Calciano in Basilicata,
V Convegno Nazionale dei Giovani Ricercatori in Geologia Applicata, pp. 114–121, Cagliari, 8-11/10/1996,
Abstract
Nel lavoro vengono illustrati ed interpretati i risultati degli studi geologici, geomorfologici ed idrologici condotti ...
Nel lavoro vengono illustrati ed interpretati i risultati degli studi geologici, geomorfologici ed idrologici condotti al fine di accertare i caratteri geomorfologici ed evolutivi di un complesso e profondo movimento di massa e, in particolare, ii ruolo svolto dalle piogge sulle sue periodiche rimobilitazioni prodottesi nd recente passato e che si sono rese responsabili di significativi daimi alla linea ferroviaria Potenza - Metaponto
Cotecchia, V.
Daurù, M.
Limoni, P. P.
Mitolo, D.
Polemio, M., 2000, Carta della vulnerabilità dell’acquifero salentino_ area campione a sud di Lecce,
2000,
Abstract
Si valorizzano i risultati conseguiti con uno studio di dettaglio di un'area campione dell'unità idrogeologica ...
Si valorizzano i risultati conseguiti con uno studio di dettaglio di un'area campione dell'unità idrogeologica del Salento (Puglia), costituita da un vasto acquifero carbonatico mesozoico.
Tale area, rappresentativa sia degli aspetti idrogeologici tipici delle zone di alimentazione del Salento sia degli effetti dell'antropizzazione, è sede di nurnerosi pozzi adibiti ad uso potabile.
Lo studio è stato finalizzato alla redazione della carta della vulnerabilità dell'acquifero con ii metodo SINTACS. La natura sperimentale dell'applicazione è legata alle peculiarità dell'acquifero salentino e all'assenza di esperienze pregresse per tale contesto.
Sono stati effettuati rilievi diretti, prove idrogeologiche e piü cicli di campionarnento idrico ed analisi di laboratorio.
I centri di pericolo sono stati censiti sulla base delle banche dati disponibili ed ispezionando ii territorio. L'infiltrazione si è dirnostrata molto rapida, anche laddove l'acquifero non affiora.
La vulnerabilità è risultata notevole, da alta a molto elevata. La qualita delle acque, per quanto tuttora buona, si è dimostrata sensibile alla posizione e all'azione dei centri di pericolo. I rischi di degrado qualitativo sono risultati non trascurabili.
Polemio, M.
Di Cagno, M.
Virga, R., 2000, Le acque sotterranee del Gargano_ risorse idriche integrative e di emergenza,
Acque sotterranee 68 (2000): 41–58.,
Abstract
II presente lavoro intende caratterizzare ii rapporto tra alimentazione della falda idrica sotterranea del Gargano ...
II presente lavoro intende caratterizzare ii rapporto tra alimentazione della falda idrica sotterranea del Gargano e ii prelievo dai pozzi, gli efflussi dalle sorgenti e l'esistenza di risorse idriche sotterranee ulteriormente utilizzabili. L'area, di circa 2.000 km2, è stata discretizzata in un reticolo a maglie quadrate di 4 km2, per ciascuna delle quali è stata stimata la litologia affiorante prevalente, la quota e la pendenza media.
Caratterizzato nel dettaglio ii regime termopluviometrico vigente nel Gargano, si è proceduto, per ogni celia, al calcolo delle grandezze termopluviometriche e alla definizione del bilancio idrologico.
Sono state raccolte tutte le informazioni disponibili relative alle portate sorgive e ai pozzi al fine di una stima, ad oggi possibile soltanto in difetto, degli efflussi sorgivi e degli emungimenti.
Al fine di meglio quantificare le portate sorgive, è stato definito un bilancio idrologico semplificato del lago di Varano.
Ii metodo utilizzato è stato positivamente validato su un piccolo acquifero campione del Gargano, l'acquifero carbonatico e superficiale di Vico-Ischitella.
In termini medi, dei circa 37 m3/s di precipitazioni meteoriche si stima che non meno di 8,12 m3/s finiscano per alimentare l'unità idrogeologica del Gargano.
Si è stimato che non meno di 3,4 m3/s alimentino sorgenti, pan al 42 % dell'infiltrazione, mentre almeno 0,53 m3/s, pan al 7%, viene prelevato dai pozzi.
Ii 50 % dell'alimentazione del Gargano dà vita ad una risorsa idrica sotterranea ii cui recapito finale non è ad oggi noto. Trattasi di non meno di 4 m3/s che si versa- no a mare senza che si abbiano notizie certe sull'ubicazione e la reale portata, anche approssimata, di tali sorgenti.
La notevole entità delle portate in gioco e la buona qualità delle acque sotterranee del Gargano impongono di considerare tale acquifero profondo come una fonte per l'utilizzazione razionale e sostenibile di risorse idriche integrative e di emergenza.
Cherubini C.(*), Pagliarulo R.(**), Ramunni F.P. (*), 2000, Caratteristiche geologico-tecniche e problemi di stabilità del territorio di Canosa di Puglia,
GeoBen 2000 "Geological and geotechnical influences in the preservation of historical and cultural heritage", pp. 381–387, Torino, Italia, giugno 2000,
Pagliarulo R. (*), Cotecchia F. (**), 2000, Le Influenze dell’evoluzione geoambientale e della compressione dei sedimenti sulla scomparsa dell’antica Sybaris,
GeoBen 2000 "Geological and geotechnical influences in the preservation of historical and cultural heritage", pp. 715–722, Torino, giugno 2000,
Pagliarulo R. Parise M, 2000, Landslide assessment at the archaeological site of Agrigento (Sicily, Italy),
GeoEng 2000 "An International Conference on Geotechnical & Geotechnical Engineering", Sydney, Australia, 2000,
Cherubini C.(*), Cotecchia V.(*), Pagliarulo R. (**), 2000, Subsidence in the Sybaris Plain (Italy),
6th International Symposium on Land Subsidence, pp. 3–15, Venezia, settembre 2000,
Pagliarulo R., Andriani G., 2000, Geological and petrographic aspects of the calcarenitic facies in the valley of the Temples of Agrigento (Central-Southern Sicily, Italy),
Bollettino della Società Geologica Italiana (Testo stamp.) 19 (2000): 21–29.,
Andriani G.F., Pagliarulo R., 2000, Sui caratteri strutturali e tessiturali delle facies carbonatiche delle Isole Tremiti,
2000,
Andriani G.F., Pagliarulo R., 2000, La facies calcarenitica della Formazione di Agrigento_ nuovi dati strutturali e tessiturali a scala mesoscopica e microscopica,
2000,
WASOWSKI J., GOSTELOW P., 1999, Engineering geology landslide investigations and SAR interferometry,
Second International Workshop on ERS SAR Interferometry, FRINGE '99, Liege, Belgium, 10-12 November 1999,
Polemio M, 1999, Valutazione del dissesto idrogeologico nell’ abitato di Deliceto – Relazione,
1999,
Abstract
Valutazione del dissesto idrogeologico nell' abitato di Deliceto ...
Valutazione del dissesto idrogeologico nell' abitato di Deliceto
PARISE M., WASOWSKI J., 1999, Use of landslide acivity maps for the evaluation of landslide hazard_ three case studies from southern Italy.,
Natural hazards (Dordr.) 20 (1999): 159–183.,
BLONDA, G. SATALINO, M. PARISE, J. WASOWSKI, A. BARALDI, M. PAPPALEPORE, R. VIGGIANO, 1999, Soft Computing techniques for integration of SAR intensity and coherence images_ application to the study of a landslide prone area.,
Second International Workshop on ERS SAR Interferometry, FRINGE '99, Liege, Belgium, 1999,
P. Blonda, G. Satalino, V.Alberga, J. Wasowski, M. Parise, M.T. Chiaradia, R Viggiano, M. Pappalepore, 1999, Soft Computing Techniques for Data Classification in a Landslide-Prone Area of Italy,
IGARSS'99, pp. 1600–1602, 1999,
Blonda, P; Satalino, G; Wasowski, J; Parise, M; Baraldi, A; Refice, A, 1999, Neural techniques for SAR intensity and coherence data classification.,
EOS-SPIE Symposium on Image and Signal Processing for Remote Sensing V, pp. 374–381, University of Florence, Italy, Sept. 20-24, 1999,
Abstract
In recent years it has been proved that combined analysis of SAR intensity and interferometric ...
In recent years it has been proved that combined analysis of SAR intensity and interferometric correlation images is a valuable tool in classification tasks where traditional techniques such as crisp thresholding schemes and classical maximum likelihood classifiers have been employed. In this work, developed in the framework of the ESA AO3-320 project titled Application of ERS data to land slide activity monitoring in southern;Apennines, Italy, our goal is to investigate_ 1) usefulness of SAR interferometric correlation information in mapping areas with diffuse erosional activity, including Landslides; and 2) effectiveness of soft computing techniques in the combined analysis of SAR intensity and interferometric correlation images. Two neural classifiers are selected from the literature. The first classifier is a one-stage error-driven Multilayer Perceptron (MLP) and the second classifier is a Two-Stage Hybrid (TSH) learning system, consisting of a sequence of an unsupervised data-driven first stage with a supervised error-driven second stage. The TSH unsupervised first stage is implemented as either_ a) the on-line learning, dynamic-sizing, dynamic-linking Fully Self Organizing Simplified Adaptive Resonance Theory (FOSART) clustering model; b) the batch-learning, static-sizing, no-linking Fuzzy Learning Vector Quantization (FLVQ) algorithm; or c) the on-line learning, static-sizing, static-linking Self-Organizing Map (SOM). The input data set consists of three SAR ERS-1/ERS-2 tandem pair images depicting an area featuring slope instability phenomena in the Campanian Apennines of Southern Italy. From each tandem pair, four pixel-based features are extracted_ the backscattering mean intensity, the interferometric coherence, the backscattering intensity texture and the backscattering intensity change. Our classification task is focused on the discrimination of land cover types useful for hazard evaluation, i.e,, evaluation of areas affected by erosion. Classification results show that class erosion can be discriminated from other land cover classes when SAR mean intensity images are combined with coherence and texture information. In addition, our results demonstrate that soft computing techniques provide useful tools for the combined analysis of SAR intensity and coherence images. In particular, the TSH classifier employing the FOSART clustering algorithm shows_ i) an overall accuracy comparable with that of the other classification schemes under testing; ii) a training cost significantly lower than that of MLP and lower than that of TSH employing either FLVQ or SOM as its first stage; and iii) a capability of discriminating class erosion superior to that of the other classification schemes under testing.
P. Blonda, V. Alberga, M. Parise, G. Satalino, J. Wasowski, 1999, Preliminary results of multitemporal Remote Sensing data classification in a land-slide prone area of Italy,
European Geophysical Society, XXIV General Assembly, EGS 1999, The Hague, April 19-23, 1999,
P. Blonda, G. Satalino, J. Wasowski, M. Parise, A. Baraldi, A. D'Addabbo, 1999, Tecniche di soft-computing applicate allo studio dell’instabilita’ dei pendii,
3a conf. nazionale ASITA - Informazioni Territoriali e Rischi Ambientali, pp. 379–384, Napoli, Italy, 9-12 Nov. 1999,
G. Iovine (1) & M. Parise (2), 1999, The impact of mass movements on the built-up environment_ evaluating landslide damage to buildings,
Geophysical research abstracts 1 (1999).,
Cotecchia, V.
Limoni, P. P.
Polemio, M., 1999, Identification of typical chemical and physical conditions in Apulian groundwater (southern Italy) through well multi-parameter logs,
XXXIX IAH Congress,"Hydrogeology and land use management", pp. 353–358, Bratislava, 1999,
Abstract
Apulia is affected by two types of human-related pollution_ salt contamination and chemico-physical and biological ...
Apulia is affected by two types of human-related pollution_ salt contamination and chemico-physical and biological pollution. The special severity of the situation calls for a rigorous approach based on available scientific knowledge and supplemented by up-to-date investigations of the evolution of groundwater quality. Particularly useful are to this end the multi-parameter logs which have been executed along the water column of the well, through the monitoring of temperature, salinity, pH, dissolved oxygen and oxidation-reduction potential of groundwater. This method, which has been tested in 120 wells over one year, has allowed to detect some typical trends of the parameters under study. These types, which are rather recurrent in space and time, allow an extensive use of the suggested method which can be easily applied to the preliminary detection of the hydrogeological conditions which determine the chemical and physical nature of groundwater and the occurrence of human- or salt-related contamination.
Cotecchia, V.
Daurù, M.
Limoni, P. P.
Mitolo, D.
Polemio, M., 1999, Carta della vulnerabilità dell’acquifero murgiano – area campione a sud-est di Bari,
1999,
Abstract
The SINTACS method for the aquifer vulnerability evaluation is experimented in a selected area of ...
The SINTACS method for the aquifer vulnerability evaluation is experimented in a selected area of the Murgia hydrogeological unit (southern Italy). The test area is representative for the large and deep carbonate Murgia aquifer and for anthropic effects on groundwater.
Polemio, M.
Sdao, F., 1999, The role of rainfall in the landslide hazard_ the case of the Avigliano urban area (Southern Apennines, Italy),
Engineering geology 56 (1999): 297–309. doi_10.1016/S0013-7952(98)00083-0,
DOI: 10.1016%2FS0013-7952(98)00083-0
Abstract
Mass movements varying in type and size, some of which are periodically reactivated, affect the ...
Mass movements varying in type and size, some of which are periodically reactivated, affect the urban area of Avigliano. The disturbed and remoulded masses consist of sandy-silty or silty-clayey plastic material interbedded with stone fragments and conglomerate blocks. Five landslides that were markedly liable to rainfall-associated instability phenomena were selected. The relationships between landslides and rainfall were investigated using a hydrological and statistical model based on long-term series of daily rainfall data. The model was used to determine the return period of cumulative daily rainfall over 1-180 days. The resulting hydrological and statistical findings are discussed with the aim of identifying
the rainfall duration most critical to landslides. The concept of a precipitation threshold was generalized by defining some probability classes of cumulative rainfall. These classes indicate the thresholds beyond which reactivation is likely to occur. The probability classes are defined according to the return period of the cumulative rainfall concomitant with landslide reactivation.
Polemio, M.
Romanazzi, L., 1999, Numerical simulation of groundwater protection works for industrial waste dump,
Bulletin of engineering geology and the environment (Print) 57 (1999): 253–261. doi_10.1007/s100640050042,
DOI: 10.1007%2Fs100640050042
Abstract
The use of a deserted clay quarry to collect iron manufacturing-derived special wastes has been ...
The use of a deserted clay quarry to collect iron manufacturing-derived special wastes has been carefully assessed with a view to protecting ground water resources. The shallower ground water is of low quantity and poor quality. It is encompassed by a calcarenite aquifer, the bottom of which consists of clays. A limited calcarenite layer is found below, transgressively lying over the main Apulian carbonate shelf. The aquifer carbonate rocks enclose large ground water resources which ultimately flows into the Ionian Sea. A plastic waterproof diaphragm inert to percolation products has been installed to protect ground water against pollution hazards resulting from the disposal of industrial wastes. The dump is actually located in the vicinity of major industrial plants, the basements of which corresponds to the shallow aquifer. Both the basements and the railway cuttings greatly affect the ground water flow. Hydrogeological applied numerical calculation techniques have been used to evaluate the impact of a drainage trench on the ground water flow together with any noticeable influence of the latter on construction works and industrial plants in place.
Polemio, M.
Mitolo, D., 1999, La vulnerabilità dell’acquifero della piana costiera di Metaponto,
Atti dei convegni lincei 154 (1999): 423–428.,
Polemio, M.
Trizzino, R., 1999, Hydrogeological, kinematic and stability characterisation of the 1993 Senerchia landslide (Southern Italy),
International newsletter landslide news 12 (1999): 12–16.,
Abstract
The study area is located in southern Italy, south east of Naples. Slope instability phenomena ...
The study area is located in southern Italy, south east of Naples. Slope instability phenomena and floods have long been a constant feature of this portion of the Apennines, with earthquakes and precipitation representing the main triggering factors. Landslides have often resulted in dreadful economic and human losses. The 23 November 1980 earthquake (M=6.9), which struck a large area in Southern Italy particularly harshly, caused the reactivation of many previously dormant landslides along the upper valley of the Sele River. The village of Senerchia, located on the right-hand side of the Sele valley, was seriously damaged by the collapse of various buildings as well as by a large mass movement (SE1 landslide) on the south eastern side of the village.
In the study area the outcropping lithofacies can be divided into four types.
1) Limestones and dolomitic limestones (Triassic-Cretaceous) outcrop widely, mainly from 650-700 to 1800 m asl.
2) Clayey-marly and clayey-marly-arenaceous flysch, shales, marls, chert limestones, sandstones and varicoloured clays (Upper Cretaceous - Paleocene) outcrop widely, mainly from 150-200 to 650-700 m asl.
3) Detrital and breccia deposits of rockfall or scree (Quaternary) have carbonate or pyroclastic nature and outcrop at the foot of the carbonate relief.
4) Alluvial deposits (Pleistocene-Holocene) are present along the course of the Sele River and its main tributaries and outcrop from 150-200 m asl to the valley bottom.
In the area surrounding Senerchia the detectable hydrogeologic units are made of carbonate rocks that exhibit the highest relative permeability. These carbonates establish contact with the remaining two significant hydrogeological lithofacies, the detrital and breccia deposits and the flysch. The main springs of this hydrogeological unit are found at the lowest point of this contact. The detrital and breccia deposits constitute a slab which is in contact with the carbonate rocks in the west and with the SE1 landslide in the south east. The relative permeability of the slab is medium to high; thus, it can be considered a secondary aquifer. The flysch lies at the base of this slab. Wherever the flysch does not outcrop, it underlies the lithofacies, with which it is in contact. This complex acts as an impervious boundary for the carbonate rocks and the detrital deposits. The role of the impervious limit played by this complex does not improve the stability of the slope where the Senerchia settlement occurs. Water losses from the two hydrogeological water-bearing lithotypes toward the area under study have to be assumed.
Following the main shock of 23 November, the SE1 landslide was gradually mobilised over a period of a couple of weeks. The aftershocks activated a 2,500-m-long, 500-m-wide mudslide, and mobilised a soil mass of about 28x106 m3. Several minor mass movements affected the whole slope, particularly along the flanks of the main landslide body. More specifically, a subsidiary landslide took place on the middle-upper portion of the left bank of the main landslide. The SE2 landslide originated from this in 1993 and continue to be still active today.
Polemio, M.
Limoni, P. P., 1999, Mappatura speditiva della qualità delle acque sotterranee pugliesi,
Quaderni di geologia applicata 1 (1999): 3–10.,
Abstract
A methodology is proposed for groundwater quality classification, using a restricted number of analytical parameters ...
A methodology is proposed for groundwater quality classification, using a restricted number of analytical parameters (chemical-physical and not desirable substances). For Apulian aquifers, the authors experiment and modify previous scientific experiences in relation to the hydrogeological specific setting.
Polemio, M.
Dragone, V.
Di Cagno, M., 1999, Effetti antropici e naturali sul degrado quantitativo delle acque sotterranee del Tavoliere,
Quaderni di geologia applicata 4 (1999): 143–152.,
Abstract
This work is based on data acquisition and analysis of chronology sequences of piezometric, rainfall, ...
This work is based on data acquisition and analysis of chronology sequences of piezometric, rainfall, thermometric and runoff data of Apulian Tableland aquifer. Methods of time series analysis are used. This approach has allowed characterising the piezometric regime and trend related to the natural recharge variation. The historical character of measurement period, last sixty years, is very important to evaluate the human effect.
Polemio, M.
Dragone, V., 1999, Serie storiche piezometriche delle unità idrogeologiche pugliesi_ regime piezometrico, effetti climatici ed antropici,
Quaderni di geologia applicata 4 (1999): 153–162.,
Abstract
This work is based on data acquisition and analysis of chronology sequences of piezometric, rainfall ...
This work is based on data acquisition and analysis of chronology sequences of piezometric, rainfall and thermometric data of Apulian aquifers. Methods of time series analysis are used. This approach has allowed characterising the piezometric regime and trend related to the natural recharge variation.
Cotecchia, V.
Polemio, M., 1999, Apulian groundwater (Southern Italy) salt pollution monitoring network,
Natuurwetenschappelijk tijdschrift 79 (1999): 197–204.,
Abstract
The hydrogeological Apulian units are of coastal type and are mainly carbonate rocks of Mesozoic ...
The hydrogeological Apulian units are of coastal type and are mainly carbonate rocks of Mesozoic age. The rapid socio-economic growth, which has occurred in the past decades, has lead to different hazardous conditions in connection with groundwater quality. Groundwater for domestic, irrigation and industrial uses has been withdrawn in large quantities over the years; the aquifers are also increasingly becoming the ultimate "receptacle" for domestic and industrial wastewater. In order to characterise the evolutionary features of increasing saline and human-related pollution, data was gathered by a regionally based continuously operating hydrogeological monitoring network. It uses more than 100 wells, some of which are hundreds of meters deep, equipped with multiparameter sensors, temperature, conductivity and level gauges set up along the vertical axis and connected to a geo-information system. Water samples are periodically taken from the wells, the samples are analysed by chemical, physical and bacteriological parameters with the aim of detecting any farming and industrial pollutants. The new system, which provides real-time information for groundwater planning, scheduling and management, is described together with some preliminary results. The impact of seawater intrusion on water quality at regional level is also discussed
Cotecchia, V.
Daurù, M.
Limoni, P. P.
Mitolo, D.
Polemio, M., 1999, La vulnerabilità intrinseca di un’area campione dell’acquifero della Murgia (Puglia),
Quaderni di geologia applicata 1 (1999): 11–20.,
Abstract
The SINTACS method for the aquifer vulnerability evaluation is experimented in a selected area of ...
The SINTACS method for the aquifer vulnerability evaluation is experimented in a selected area of the Murgia hydrogeological unit (southern Italy). The test area is representative for the large and deep carbonate Murgia aquifer and for anthropic effects on groundwater. The experience of mapping elaboration, based a complex monitoring activity, is described.
