Archives: <span>Pubblicazioni</span>

The Colle Lapponi Piano Ovetta landslide (Agnone, Molise, Italy), an example of rainfall-induced reactivation in weathered structurally complex materials.

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., EGU General Assembly, Vienna, 2006,

Evaluating the loss of karst landscape due to anthropogenic activities.

Parise M. & Trocino A., 2006, Evaluating the loss of karst landscape due to anthropogenic activities., EGU General As, Vienna, 2006,

Sea level and karst morphologies correlations as a tool in the assessment of the karst hazard.

Convertini A., Parise M. & Spilotro G., 2006, Sea level and karst morphologies correlations as a tool in the assessment of the karst hazard., EGU General Assembly, Vienna, 2006,

Analysis of sinkhole distribution in the Tampa Bay area, Hillsborough County, Florida.

Brinkmann R., Dye D. & Parise M., 2006, Analysis of sinkhole distribution in the Tampa Bay area, Hillsborough County, Florida., EGU General Assembly, Vienna, 2006,

Sul ritrovamento a Gallipoli (LE) di alcuni elementi architettonici in piperno.

Calcaterra D., Cappelletti P., Dè Gennaro M., Langella A., Parise M. & Sammarco M., 2006, Sul ritrovamento a Gallipoli (LE) di alcuni elementi architettonici in piperno., Le risorse lapidee dallantichità ad oggi in area Mediterranea, Canosa di Puglia, 2006,

Drought spatial and temporal variability in Southern Italy (1821-2004): analysis of temperature and rainfall monthly data

Polemio M.; Casarano D.; Dragone V., 2006, Drought spatial and temporal variability in Southern Italy (1821-2004): analysis of temperature and rainfall monthly data, Geophysical research abstracts (Online) (2006): 4956–4956.,

Seawater intrusion in karstic Apulian aquifers_ spatial and time trend

Polemio M., Dragone V., Limoni P.P., 2006, Seawater intrusion in karstic Apulian aquifers_ spatial and time trend, Geophysical research abstracts (Online) 8 (2006): 4775–4775.,

Erosion and weathering phenomena within the landslide susceptibility assessment of the northwestern Apulian hills(South Italy).

Pagliarulo R., Trizzino R., 2006, Erosion and weathering phenomena within the landslide susceptibility assessment of the northwestern Apulian hills(South Italy)., EGU, Wien, 2006,

Tracking and interpreting ground surface deformations detected with PSI techniques in landslide-prone hilltop towns_ case study from Italy.

Wasowski J., Bovenga F., Casarano D., Nutricato R., Refice A., 2006, Tracking and interpreting ground surface deformations detected with PSI techniques in landslide-prone hilltop towns_ case study from Italy., EGU 2006, Vienna, 2005,

Detecting and monitoring site instability hazards with the aid of SAR interferomet.

Wasowski J., Ferretti A., 2006, Detecting and monitoring site instability hazards with the aid of SAR interferomet., First EARSeL Workshop (Geohazards), Warsaw, 2006,

Long term SAR interferometry monitoring for assessing changing levels of slope instability hazards.

Wasowski J. , Ferretti A., 2006, Long term SAR interferometry monitoring for assessing changing levels of slope instability hazards., 36th COSPAR, Beijing, 2006,

Developing a Landslide Early Warning System based on satellite measurements.

Guerriero, L., Bovenga F., Nutricato R., Wasowski, J., Casarano D., Gostelow, P., Del Gaudio, V., Blonda P., Refice A., 2006, Developing a Landslide Early Warning System based on satellite measurements., EGU 2006, Vienna, 2006,

Satellite interferometry for monitoring ground instability in the urban environment.

Ferretti A., Novali F., Prati C., Rocca F., Wasowski J., 2006, Satellite interferometry for monitoring ground instability in the urban environment., EGU 2006, Vienna, 2006,

Polarisation and spectral properties of the seismic site response of landslide-prone hillslopes_ a case study from Italy.

Del Gaudio V., Wasowski J., Venisti N. and Pierri P., 2006, Polarisation and spectral properties of the seismic site response of landslide-prone hillslopes_ a case study from Italy., EGU General Assembly 2006, Vienna, 2006,

Processi di instabilità di un versante in argille consistenti innescati da scavo

Lollino P., Amorosi A., Santaloia F., Cotecchia F., 2006, Processi di instabilità di un versante in argille consistenti innescati da scavo, Convegno in onore di Arturo Pellegrino, 2006,

The mechanical behaviour of intensely fissured high plasticity clays from Daunia

Cotecchia F., Vitone C., Cafaro F., Santaloia F., 2006, The mechanical behaviour of intensely fissured high plasticity clays from Daunia, Proceedings Second International Workshop on Characterisation and Engineering properties of natural Soils, Singapore, 2006,

Abstract

The paper presents the geotechnical characterisation of a site in the Daunia region (southern Italy), Santa ...

Approccio integrato per lo studio delle cause del dissesto di un monumento in conci di calcarenite.

Reina A. e Lollino P., 2006, Approccio integrato per lo studio delle cause del dissesto di un monumento in conci di calcarenite., Le risorse lapidee dallantichità ad oggi in area mediterranea, Canosa di Puglia, 2006,

Numerical analysis of the behaviour of a cut slope in stiff clays by finite difference method

Lollino P., Santaloia F., Amorosi A. e Cotecchia F., 2006, Numerical analysis of the behaviour of a cut slope in stiff clays by finite difference method, 6th European Conf. On Numerical Methods in Geotechnical Engineering NUMGE, pp. 507–512, Graz (Austria), SEP 06-08, 2006,

Abstract

This paper concerns the instability process occurring on a cut slope in stiff clays located ...

Sul ritrovamento a Gallipoli (LE) di alcuni elementi architettonici in piperno.

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., Le risorse lapidee dallantichità ad oggi in area Mediterranea, Canosa di Puglia, 2006,

Satellite interferometry for monitoring ground deformations in the urban environment.

Ferretti A., Prati, C., Rocca F. & Wasowski J., 2006, Satellite interferometry for monitoring ground deformations in the urban environment., IAEG2006 Congress, Nottingham, 2006,

Cassini RADAR data analysis_ inference of physical and morphological properties of selected Titans surface features.

Ventura, B., Casarano D., Notarnicola, C., Di Rosa D., Posa F. and the Cassini Radar Science Team, 2006, Cassini RADAR data analysis_ inference of physical and morphological properties of selected Titans surface features., IEEE GOLD Remote Sensing Conference 2006, Bari, 2006,

Risultati di alcuni test per la valutazione dellanisotropia nella risposta sismica di sito.

Del Gaudio V., Wasowski J., 2006, Risultati di alcuni test per la valutazione dellanisotropia nella risposta sismica di sito., 25° Convegno Nazionale GNGTS, pp. 233–236, Roma, 2006,

Drought spatial and temporal variability in Southern Italy (1821-2004): analysis of temperature and rainfall monthly data

M. Polemio, D. Casarano, V. Dragone, 2006, Drought spatial and temporal variability in Southern Italy (1821-2004): analysis of temperature and rainfall monthly data, European Geosciences Union General Assembly 2006, Vienna, Austria, 02-07/04/2006,

Seawater intrusion in karstic Apulian aquifers_ spatial and time trend

Polemio M., 2006, Seawater intrusion in karstic Apulian aquifers_ spatial and time trend, European Geosciences Union General Assembly 2006, Vienna, Austria, 02-07/04/2006,

Sul ritrovamento a Gallipoli (LE) di alcuni elementi architettonici in piperno.

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.,

Analisi agli elementi distinti di un fronte di cava in calcare fessurato.

Lollino P. & Reina A., 2006, Analisi agli elementi distinti di un fronte di cava in calcare fessurato., 4 (2006): 237–245.,

The degradation hazard of groundwater resources of the Metaponto coastal plain (Southern Italy)

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 ...

Studio geochimico delle acque sorgive dei bacini del torrente Vaccuta e del fiume Abatemarco (Calabria nord-occidentale)

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 ...

Atlante delle Grotte della Campania.

Parise M., 2006, Atlante delle Grotte della Campania., 3(1) (2006): 111–113.,

Facing environmental problems in karst areas of developing countries_ the case study of Dajti – Mali me Gropa (Albania).

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).,

Fan morphodynamics and slope instability in the Mucone River basin (Sila Massif, southern Italy): significance of weathering and role of land use changes.

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).,

Sea level and karst morphologies correlations as a tool in the assessment of the karst hazard.

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).,

The Colle Lapponi Piano Ovetta landslide (Agnone, Molise, Italy), an example of rainfall-induced reactivation in weathered structurally complex materials.

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).,

Coastline evolution controlled by development of sinkholes, and likely effects on the anthropogenic environment.

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. ...

Analysis of sinkhole distribution in the Tampa Bay area, Hillsborough County, Florida.

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. ...

Aspetti archeologici e condizioni geologico-morfologiche degli antichi acquedotti pugliesi. L’esempio dell’Acquedotto del Triglio nell’area tarantina.

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.

Le voragini catastrofiche della Florida

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. ...

Evaluating the human disturbance to karst environments in southern Italy.

Calò F. & Parise M., 2006, Evaluating the human disturbance to karst environments in southern Italy., Acta carsologica (Spletna izd.) 35(2) (2006): 47–56.,

Erosion and weathering phenomena within the landslide susceptibility assessment of the northwestern Apulian hills (South Italy).

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 ...

Analisi delle modificazioni del territorio connesse ai siti inquinati in territori urbani(brownfields): il caso dell’ex Fibronit di Bari.

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 ...

L’attività estrattiva a Canosa di Puglia. Le risorse lapidee dall’antichità ad oggi in area mediterranea.

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 ...

Coastal changes and the environmental evolution of the archaeological site of Sybaris (Southern Italy).

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 ...

Valutazione della suscettività al dissesto idrogeologico della fascia pedemontana dell’Appennino Dauno_ il caso dell’abitato di Troia (Foggia)

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

Evaluating the loss of karst landscape due to anthropogenic activities.

Parise M. & Trocino A.,, 2006, Evaluating the loss of karst landscape due to anthropogenic activities., 8 (2006).,

Il degrado qualitativo delle acque sotterranee pugliesi

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.

Remote sensing and ground-based geophysical techniques for recognition, characterisation and monitoring of unstable slopes.

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.,

Landslides induced by earthquake and volcanic activity.

Keefer, D. K., Wasowski J., Del Gaudio V., 2006, Landslides induced by earthquake and volcanic activity., Engineering geology 86 (2006): 2–3.,

A Plastic Flow Model for the Acquara-Vadoncello Landslide in Senerchia, Southern Italy.

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.

Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry.

Colesanti C.; Wasowski J., 2006, Investigating landslides with space-borne Synthetic Aperture Radar (SAR) interferometry., Engineering geology 88 (2006): 173–199. doi_10.1016/j.enggeo.2006.09.013,

DOI: 10.1016%2Fj.enggeo.2006.09.013

Abstract

This paper is addressed to readers without advanced knowledge of remote sensing. It illustrates some ...

This paper is addressed to readers without advanced knowledge of remote sensing. It illustrates some current and potential uses of satellite Synthetic Aperture Radar interferometry (InSAR) for landslide assessment. Data acquired by SAR systems can provide 3D terrain models and be used to assist in regional scale investigations, e.g. aimed at evaluation of susceptibility of slopes to failure. Under favourable environmental conditions, the innovative Permanent Scatterers (PS) technique, which overcomes several limitations of conventional SAR differential interferometry (DInSAR) applications in landslide studies, is suitable for monitoring slope deformations with millimetric precision. The PS technique combines the wide-area coverage typical of satellite imagery with the capability of providing displacement data relative to individual image pixels. With the currently available radar satellites, however, only very slow ground surface displacements can be reliably detected and measured. The presented case study of a landslide from the Liechtenstein Alps indicates that the most attractive and reliable contribution provided by this remote sensing technique lies in the possibility of (i.) wide-area qualitative distinction between stable and unstable areas and (ii.) qualitative (relative) hazard zonation of large, slow landslides based on the identification of segments characterised by different movement rates. Since only the radar line of sight projection of the displacements can be detected, a quantitative exploitation of the PS data is possible only where sufficient ground truth is available. In site specific or single landslide investigations the PS data can represent a very useful complementary data source with respect to the information acquired through ground based observations and in situ surveying. However, the difficulties associated with the feasibility assessments of the applicability of SAR data to local scale problems, as well as with the interpretation of PS results, require a close collaboration between landslide experts and specialists in advanced processing of radar satellite data. The interpretation of the exact geotechnical significance of small, radar sensed ground surface deformations is challenging, especially where ground truth is lacking. Although any ground deformation is potentially of interest to an engineering geologist, detection of movements in both vertical and horizontal directions is needed in the case of landslides to evaluate slope failure mechanisms.With their high radar viewing angles, however, the current space-borne systems can detect only a fraction of the horizontal component of movement. It is expected that the upcoming SAR dedicated missions with new sensors and different acquisition geometries, combined with the rapid developments in the field of advanced radar data processing, will allow a full 3D reconstruction of deformation data and help to further reduce the current limitations of the PS and similar DInSAR approaches.

Application of multi-temporal differential interferometry to slope instability detection in urban

Bovenga F.; Nutricato R.; Refice A.; Wasowski J., 2006, Application of multi-temporal differential interferometry to slope instability detection in urban, Engineering geology 88 (2006): 218–239. doi_10.1016/j.enggeo.2006.09.015,

DOI: 10.1016%2Fj.enggeo.2006.09.015

Abstract

We present two case studies regarding the application of Synthetic Aperture Radar (SAR) Persistent Scatterers ...

We present two case studies regarding the application of Synthetic Aperture Radar (SAR) Persistent Scatterers Interferometry (PSI) techniques to landslide-prone slopes situated in the municipal territories of Caramanico Terme and Volturino (Italy). The analysis of satellite SAR data with PSI techniques poses often problems on sites where, due to the scarcity of human artefacts and the presence of vegetation cover, density of coherent points (PS) is low (b10 per km2). Moreover, the steep and rough topography typical of landslide-prone areas hamper the interferometric pre-processing, making more difficult the joint estimation of displacements and of DEM errors. Under these conditions the significance of temporal interferometric phase trends can be uncertain and conservative assumptions, necessary to ensure low false detection probabilities, need to be coupled with innovative processing strategies to increase the detection efficiency of PS objects. Here, the SPINUA (Stable Point Interferometry over Un-urbanised Areas) processing technique is applied together with an alternative PS Candidate (PSC) selection procedure based on the use of pixels classified as urban. The cases of Caramanico and Volturino are representative, respectively, of harsh and favourable conditions for PSI applications. The results from Caramanico show clusters of PS exhibiting similar line-of-sight (LOS) deformation behaviour in the period 1995-2000. The locations ofmoving PS often coincidewith distressed buildings and appear consistent with the areal distribution of recent and past landslide activity. The temporal displacement trends, however, are characterised by very low annual average velocities (from 3 to 7 mm/y) and it is uncertain to what extent the PS data reflect true slope movements, local deformations (e.g. settlement of engineering structures) or both. Thanks to the more favourable conditions, the application of the standard SPINUA approach in the Volturino area was sufficient to obtain suitable densities of PS, as well as spatially and temporally consistent displacement results for a period 1992-2000. In particular, a group of moving PS was identified in a peri-urban area, known for the past and recent slope stability problems. The slowly moving PS (from 3 to 5 mm/y) fall in a location that, unlike the remaining part of the town, is characterised by the presence of many distressed buildings and structures. Although the site information confirms the reliability of PS data, in the absence of ground monitoring and detailed records of landslide movements, it is difficult to identify the main mechanism of the detected deformations. In general, in geologically and topographically complex urban/peri-urban settings, the significance of very low-velocity PSI surface displacements should always be considered together with in situ geotechnical controls and ground monitoring data.

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