Vai ai contenuti. | Spostati sulla navigazione | Spostati sulla ricerca | Vai al menu | Contatti | Accessibilità

logo del sistema bibliotecario dell'ateneo di padova

Mulé, Mariachiara (2016) Il contributo dell'interferometria RADAR satellitare nelle indagini geomorfologiche in aree di pianura soggette a fenomeni di subsidenza: il caso dell'area di Portogruaro (VE). [Magistrali biennali]

Full text disponibile come:

[img]Documento PDF (Tesi)
Tesi non accessibile fino a 05 Dicembre 2019 per motivi correlati alla proprietà intellettuale. Visibile a: nessuno



In the last decades, thanks to the development of multi-stacking techniques, the Differential Interferometric Synthetic Aperture RADAR (DInSAR) became a fundamental and necessary tool for analysing and monitoring the spatial and temporal evolution of land subsidence in several coastal regions. This remote sensing technique allows to study the subsidence phenomena of large areas, with centimetric-millimetric precision. The benefit of DInSAR is also the availability of a great amount of data, acquired by different space agencies, which offers a wide coverage over the Earth surface. The aim of this work is to show an innovative use of DInSAR, considering the possible relationship between the geological and geomorphological architecture of an Italian coastal plain and the rate of subsidence, inferred through analysis of interferometric data of the last 20 years. In this perspective the analysis of Synthetic Aperture Radar (SAR) data through Advanced Differential SAR Interferometry (A-DInSAR) could be used as a tool for geomorphological and geological mapping. Furthermore the assessment of the possible causes of the subsidence in Portogruaro and Concordia Sagittaria, which is important for the territorial management and planning, is reported and discussed. The research is focused on a coastal sector of the venetian-friulian plain located upstream of Caorle lagoon, between Portogruaro and Concordia Sagittaria (north-eastern Italy), with an extent of about 50 km2. In the last 125 kyr this area experienced an average downlift rate of about 0.4-0.5 mm/yr, related to crustal flexuring and sediment compaction. But the on-going subsidence is strongly higher, probably related to the reclamation of the 19-20th centuries, which induced the compaction of the Holocene deposits and the oxidation of the organic component in the soil, and groundwater withdrawal. This sector of the eastern Veneto Region was formed by the interplay between the fluvial system of Tagliamento River and lagoon and marine environments. During Lateglacial and early Holocene, between about 19-8 kyr BP, Tagliamento River eroded several incised fluvial valleys, with a maximum depth of 15-25 m and a width of 500-2000 m. These features entrenched in the alluvial sediments of the Last Glacial Maximum (LGM) and since about 8 kyr BP the coastal and deltaic processes favoured their filling with lagoon and alluvial sediments. Downstream of Portogruaro the paleovalleys have been completely buried by younger deposits and their detection is possible only using subsoil investigations. On the contrary, these fluvial incisions are still partially visible through DEM and field observations upstream of Portogruaro. The cities of Concordia Sagittaria and Portogruaro, developed over the buried fluvial incisions and several ancient buildings, experienced important deformations related to the compaction of the soft sediments filling the former fluvial depressions. This is the case of the tower bell of Portogruaro and some other late-Medieval and Venetian palaces. A peculiar situation characterises the cathedral of Concordia, where in the ’90 of 20th century large volume of the subsoil below and near the church had been excavated to expose the archaeological remains of the Roman period. This intervention required special foundations for sustain the old building, but the on-going subsidence represents a major threat for the preservation of the ancient cathedral. Portogruaro and Concordia Sagittaria represent a good test site to check the relationship between surface displacements obtained from interferometric data and geological information, because in this area a lot of geological and geomorphological information are available and Holocene and Pleistocene deposits are affected by an evident differential subsidence. The study started from the analysis and comparison in GIS environment of the pre-existing data which allow to known the geological and geomorphological features of the area. In Portogruaro and Concordia Sagittaria a great amount of stratigraphic cores and geotechnical tests are available, allowing to reconstruct the stratigraphy of some sectors and to directly check in the field the position and the depth of the boundaries delimitating the ancient fluvial incisions, now filled by younger sediments. To investigate the downlift rates and reconstruct their areal pattern, I considered ERS, Envisat, COSMO Sky-Med and Sentinel-1 SAR data referred to the periods 1995-2000, 2003-2010, 2010-2016 and 2014-2016, respectively. Particularly I considered ERS and Envisat Persistent Scatterers (PS) acquired with ascending orbit, because these data show the best correspondence of the spatial distribution of velocity with the boundaries of buried incisions (Figures 4.2, 4.3, 4.4, 4.5). The velocity maps, obtained through interpolation of PS, show that the interferometric steady unit overlaps the outcropping LGM plain, whereas the subsidence unit (with rate of -1.5÷-3 mm/yr) is located upon the buried incisions (Figures 4.6, 4.7). This correspondence was also found in the velocity maps obtained from COSMO Sky-Med interferometric data (Figures 4.8, 4.9), but only partially in that map obtained from Sentinel data (Figure 4.10), probably because the short time interval covered by the available data. Then, through the available stratigraphic cores, I realised a stratigraphic section (Figure 4.14) and I compared this section and the stratigraphic section (Figure 4.15) realised by Alessandro Fontana (Fontana, 2006) with the velocity sections obtained from ERS and Envisat data (Figures 4.18, 4.19, 4.20, 4.21). I observed that a greater thickness of post-LGM deposits corresponds with a greater subsidence rate. I expect that the subsidence rate is linked with the thickness of fine deposits (organic clays and silts and peat) observed in the manual boring realized in PRT1 point (Figures 4.16 and 4.17). Another aim of this project is the assessment of the possible causes of the subsidence in Portogruaro and Concordia Sagittaria. Starting from the velocity maps derived from of ERS, Envisat, COSMO Sky-Med and Sentinel interferometric data, I identified some critical points, call velocity anomalies in this work, interested by a strong deformation rate, greater than 3 mm/yr (Figures 4.23, 4.24, 4.25). The observed critical points correspond to recent buildings, roads and infrastructures. These localized subsiding areas can be explained as the result of ground consolidation related to urbanization and recent overloads (Figures 4.26, 4.27). Finally through hydrogeological and bibliographic data I observed that the area of Portogruaro is affected by the extraction of groundwater resulting in depressurization of the deep thermal aquifer. I hypothesize that the depressurization of the deep thermal aquifer may caused subsidence in the study area. Another hypothesis is that lowering the water level of the shallow water table may led to the consolidation of the soil and consequently subsidence. In both cases the recognition of the limit of buried incisions through the rate of subsidence is linked to the different deformational behavior of the sediments filling the post-LGM incisions and the external LGM plain.

Tipologia del documento:Magistrali biennali
Parole chiave:Subsidenza, Interferometria, Pianura Veneto-Friulana
Settori scientifico-disciplinari del MIUR:Area 04 - Scienze della terra > GEO/04 Geografia fisica e geomorfologia
Codice ID:56859
Relatore:Fontana , Alessandro
Correlatore:Floris, Mario - Tessari , Giulia
Data della tesi:02 Dicembre 2016
Biblioteca:Polo di Scienze > Dip. Geoscienze - Biblioteca
Tipo di fruizione per il documento:on-line per i full-text
Tesi sperimentale (Si) o compilativa (No)?:


I riferimenti della bibliografia possono essere cercati con Cerca la citazione di AIRE, copiando il titolo dell'articolo (o del libro) e la rivista (se presente) nei campi appositi di "Cerca la Citazione di AIRE".
Le url contenute in alcuni riferimenti sono raggiungibili cliccando sul link alla fine della citazione (Vai!) e tramite Google (Ricerca con Google). Il risultato dipende dalla formattazione della citazione e non da noi.

Amato, A., Barnaba, P.F., Finetti, I., Groppi, G., Martinis, B., and Muzzin, A. (1976) Geodynamic outline and seismicity of Friuli Venetia Julia region. Boll. Geof. Teor. Appl., 18, 217-256. Cerca con Google

Antonioli, F., Ferranti, L., Fontana, A., Amorosi, A., Bondesan, A., Braitenberg, C., Fontolan, G., Furlani, S., Mastronuzzi, G., Monaco, C., Spada, G., Stocchi, P. (2009) Holocene relative sea-level changes and vertical movements along the Italian and Istrian coastlines. Quaternary International, 206, 101-133. Cerca con Google

Arnaud, A., Adam, N., Hanssen, R., Inglada, J., Duro, J., Closa, J., and Eineder, M. (2003) ASAR ERS interferometric phase continuity. Geoscience and Remote Sensing Symposium. IGARSS ‘03. Proceedings. 2003 IEEE International, 2, 1133–1135, 21–25 July 2003. Cerca con Google

Barnaba, P. F. (1990) Considerazioni geologiche sul sottosuolo e sulle risorse idrotermali della zona di Latisana-Foce del Tagliamento. Mem Sc. Geol. Univ. Padova, 42, 343-359 pp. Cerca con Google

Berardino, P., Fornaro, G., Lanari, R., and Sansosti, E. (2002) A New Algorithm for Surface Deformation Monitoring Based on Small Baseline Differential SAR Interferograms. Ieee transactions on geoscience and remote sensing, vol. 40, no. 11. Cerca con Google

Blanco-Sanchez, P., Mallorquì, J.J., Duque, S., and Monells, D. (2008) The Coherent Pixels Technique CPT): An Advanced DInSAR Technique for Nonlinear Deformation Monitoring. Pure Appl. Geophys., 165, 1167–1194. Cerca con Google

Bondesan, A., Bassan, V., Fontana, A., Meneghel, M., Mozzi, P., Abba, T., Bisazza, A. & Viturri, A. (2008a) Carta delle unità geologiche della provincia di Venezia, scala 1:50000. Cierre, Verona, 2 Fogli. Cerca con Google

Bondesan, A., Primon, S., Bassan, V. & Viturri, A. (2008b) Le unità geologiche della provincia di Venezia. Cierre, Verona, 184 pp. Cerca con Google

Branney, M. J. (1995) Downsag and extension at calderas: new perspectives on collapse geometries from icemelt, mining, and volcanic subsidence. Bulletin of Volcanology, Volume 57, Issue 5, 303- 318. Cerca con Google

Carbognin, L., Teatini, P., Tosi, L., Strozzi, T., Viturri, A., Mazzuccato, A. (a cura di) (2011) Subsidenza - Atlante geologico della provincia di Venezia – note illustrative. Cerca con Google

Conesa-García, C., Tomás, R., Herrera, G., López-Bermúdez, F., Cano, M., Navarro-Hervás, F., and Pérez-Cutillas, P. (2016) Deformational behaviours of alluvial units detected by advanced radar interferometry in the Vega Media of the Segura River, southeast Spain. Geografiska Annaler: Series A, Physical Geography, 98, 15–38, DOI:10.1111/geoa.12121. Cerca con Google

Correggiari, A., Roveri, M., Trincardi, F. (1996) Late Pleistocene and Holocene evolution of the North Adriatic Sea. Il Quaternario – Italian Journal of Quaternary Sciences, 9, 697–704. Cerca con Google

Dal Prà, A., Gobbo, L., Vitturi, A., Zangheri, P. (2000) Indagine idrogeologica del territorio provinciale di Venezia. Cerca con Google

Dokka, R.K. (2006) Modern-day tectonic subsidence in coastal Louisiana. Geology, v.34, 281-284. Cerca con Google

Fabbri, P., Zangheri, P., Bassan, V., Fagarazzi, E., Mazzuccato, A., Primon, S., Zogno, C. (2013) Sistemi idrogeologici della provincia di Venezia – Acquiferi superficiali. Cerca con Google

Ferranti, L., Antonioli, F., Mauz, B., Amorosi, A., Dai Pra, G., Mastronuzzi, G., Monaco, C., Orrù, P., Pappalardo, M., Radtke, U., Renda, P., Romano, P., Sansò, P., and Verrubbi, V. (2006) Markers of the last interglacial sea-level high stand along the coast of Italy: Tectonic implications. Quaternary International, 145-146, 30-54. Cerca con Google

Ferretti, A., Prati, C., Rocca, F. (2001) Permanent Scatterers in SAR interferometry. Transactions on Geoscience and Remote Sensing, Vol. 39, NO. 1, 8 - 20. Cerca con Google

Ferretti, A., Fumagalli, A., Novali, F., Prati, C., Rocca, F., and Rucci, A. (2011) A new algorithm for processing interferometric data-stacks: SqueeSAR. Geoscience and Remote Sensing, IEEE Transactions on, 49(9), 3460-3470. Cerca con Google

Fontana, A., Mozzi, P., Bondesan, A. (2004) L'evoluzione geomorfologica della pianura veneto– friulana. In: Bondesan, A., Meneghel, M. (Eds.), Geomorfologia della provincia di Venezia. Esedra, Padova, 113–136. Cerca con Google

Fontana, A. (2006) Evoluzione geomorfologica della bassa pianura friulana e sue relazioni con le dinamiche insediative antiche. Monografie Museo Friulano Storia Naturale 47, Udine, 288. Inclusa mappa geomorfologica della bassa pianura friulana, scala 1:50000. Cerca con Google

Fontana, A., Mozzi, P., Bondesan, A. (2008) Alluvial megafans in the Venetian–Friulian Plain (north-eastern Italy): evidence of sedimentary and erosive phases during Late Pleistocene and Holocene. Quaternary International, 189, 71–90. Cerca con Google

Fontana, A., Bondesan, A., Meneghel, M., Toffoletto, F., Vitturi, A., Bassan, V. (a cura di) (2012) Carta Geologica d'Italia alla scala 1:50.000 - Foglio 107 Portogruaro e note illustrative. Regione Veneto, Infocartografica, Piacenza, 2 fogli, 168 pp. Cerca con Google

Fontana, A., Mozzi, P., Marchetti, M. (2014) Alluvial fans and megafans along the southern side of the Alps. Sedimentary Geology, 301, 150-171. Cerca con Google

Hooper, A. (2008) A multi-temporal InSAR method incorporating both persistent scatterer and small baseline approaches, Geophys. Res. Lett., 35, L16302, doi:10.1029/2008GL034654 Cerca con Google

Klemm, H., Quseimi, I., Novali, F., Ferretti, A., and Tamburini, A. (2010) Monitoring horizontal and vertical surface deformation over a hydrocarbon reservoir by PSInSAR. First break volume 28. Cerca con Google

Manunta, M., Marsella, M., Zeni, G., Sciotti, M., Atzori, S., and Lanari, R. (2008) Two-scale surface deformation analysis using the SBAS-DInSAR technique: a case study of the city of Rome, Italy. International Journal of Remote Sensing, 29, 6,1665-1684. Cerca con Google

Martinsons, D.G., Pisias, N.G., Hays, J.D., Imbrie, J., Moore, T.C., and Shackleton, N.J. (1987) Age dating and the orbital theory of the ice ages: development of a high resolution 0 to 300000-year chronostratigraphy. Quaternary Research, 27, 1-29. Cerca con Google

Massari, F. (1990) The foredeep of the northern Adriatic margin: evidence of diachronicity in deformation of the Southern Alps. Riv. It. Paleont. Strat., 96, 350-380. Cerca con Google

Massonnet, D., and Feigl, K.L. (1998) Radar interferometry and its application to changes in the Earth’s surface. Rev. Geophys., 36, 441-500. Cerca con Google

Monegato, G., Ravazzi, C., Donegana, M., Pini, R., Calderoni, G.,Wick, L. (2007) Evidence of a two-fold glacial advance during the last glacial maximum in the Tagliamento and moraine system (eastern Alps). Quaternary Research, 68, 284–302. Cerca con Google

Pellegrini, G.B., Albanese, D., Bertoldi, R., Surian, N. (2005) La deglaciazione nel Vallone Bellunese, Alpi Meridionali Orientali. Geografia Fisica e Dinamica Quaternaria (Suppl. 7), 271–280. Cerca con Google

Raspini, F., Loupasakis, C., Rozos, D., Adam, N., and Moretti, S. (2014) Ground subsidence phenomena in the Delta municipalità region (Northern Greece): Geotechnical modelling and validation with Persistent Scatterer Interferometry. International Journal of Applied Earth Observation and Geoinformation, Vol. 28, 78–89. Cerca con Google

Rosen, P.A., Hensley, S., Joughin, I.R., Li, F.K., Madsen, S.N., Rodriguez, E., Goldstein, R.M. (2000) Synthetic aperture radar interferometry. Proc. I.E.E.E., 88 (3), 333-382. Cerca con Google

Sousa, J. J., Ruiz, A. M., Hanssen, R. F., Bastos, L., Gil, A. J., Galindo-Zaldìvar, J. and Sanz De Galdeano, C. (2010) PSInSAR processing methodologies in the detection of field surface deformation—Study of the Granada basin (Central Betic Cordilleras, southern Spain). Journal of Geodynamics, 49(3), 181–189. Cerca con Google

Sowter, A., Bateson, L., Strange, P., Amborse, K., and Fifik Syafiudin, M. (2013) DInSAR estimation of land motion using intermittent coherence with application to the South Derbyshire and Leicestershire coalfields. Remote Sensing Letters, 4(10), 979–987. Cerca con Google

Stramondo, S., Saroli, M., Tolomei, C., Moro, M., Doumaz, F., Pesci, A., Loddo, F., Baldi, P., Boschi, E. (2007) Surface movements in Bologna (Po Plain — Italy) detected by multitemporal DInSAR. Remote Sensing of Environment. Cerca con Google

Stramondo, S., Bozzano, F., Marra, F., Wegmuller, U., Cinti, F.R., Moro, M., Saroli, M. (2008) Subsidence induced by urbanisation in the city of Rome detected by advanced InSAR technique and geotechnical investigations. Remote Sensing of Environment, 112, 3160–3172. Cerca con Google

Takada, Y., and Fukushima, Y. (2013) Volcanic subsidence triggered by the 2011 Tohoku earthquake in Japan. Nature Geoscience, 6, 637–641. Cerca con Google

Teatini, P., Tosi, L., Strozzi, T., Carbognin, L., Wegmüller, U., Rizzetto, F. (2005) Mapping regional land displacements in the Venice coastland by an integrated monitoring system. Cerca con Google

Teatini, P., Tosi, L., Strozzi, T., Carbognin, L., Cecconi, G., Rosselli, R., and Libardo, S. (2012) Resolving land subsidence within the Venice lagoon by persistent scatterer SAR interferometry. Physics and Chemistry of the Earth, Parts A/B/C, 40, 72–79. Cerca con Google

Terzaghi, K., Peck, R. (1967) Soil Mechanics in Engineering Practice, 2nd Edition. John Wiley, New York. Cerca con Google

Tomas, R., Marquez, Y., Lopez-Sanchez, J. M., Delgado, J., Blanco, P., Mallorquì, J. J., Martinez, M., Herrera, G., Mulas, J. (2005) Mapping ground subsidence induced by aquifer overexploitation using advanced Differential SAR Interferometry: Vega Media of the Segura River (SE Spain) case study. Remote Sensing of Environment, 98, 269 – 283. Cerca con Google

Tomas, R., Herrera, G., Lopez-Sanchez, J.M., Vicente, F., Cuenca, A., Mallorquì, J.J. (2010) Study of the land subsidence in the Orihuela city (SE Spain) using PSI data: distribution, evolution and correlation with conditioning and triggering factors. Engineering Geology, 115, 105–121. Cerca con Google

Tosi, L., Da Lio, C., Strozzi, T., Teatini, P. (2016) Combining L- and X-Band SAR Interferometry to Assess Ground Displacements in Heterogeneous Coastal Environments: The Po River Delta and Venice Lagoon, Italy. Remote Sens., 8, 308. Cerca con Google

Tovey, N., Paul, M. (2002) Modelling self-weight consolidation in holocene sediments. Bull. Eng. Geol. Env., 61, 21-33. Cerca con Google

Van Asselen, S. (2011) The contribution of peat compaction to total basin subsidence: implications for the provision of accommodation space in organic-rich deltas. Basin Research, 23, 239–255. Cerca con Google

Viturri, A. (a cura di) (2011) Atlante geologico della provincia di Venezia – note illustrative. Cerca con Google

Watts, A. B. (1982) Tectonic subsidence, flexure and global changes of sea level. Nature, 297, 469 - 474. Cerca con Google

Ye-Shuang Xu, Shui-Long Shen, Zheng-Yin Cai, Guo-Yun Zhou (2007) The state of land subsidence and prediction approaches due to groundwater withdrawal in China. Cerca con Google

Zanferrari, A. (a cura di) (2012) Inquadramento geologico e lineamenti strutturali - Carta Geologica d'Italia alla scala 1:50.000 - Foglio 107 Portogruaro e note illustrative. Regione Veneto, Infocartografica, Piacenza, 2 fogli, 168 pp. Cerca con Google

Zangheri, P. (a cura di) (2011) Idrogeologia - Atlante geologico della provincia di Venezia – note illustrative. Cerca con Google

Zangheri, P. (a cura di) (2012) Aspetti idrogeologici - Carta Geologica d'Italia alla scala 1:50.000 - Foglio 107 Portogruaro e note illustrative. Regione Veneto, Infocartografica, Piacenza, 2 fogli, 168 pp. Cerca con Google

Zeitoun, D. G., Wakshal, E. (2013) Land Subsidence Analysis in Urban Areas: The Bangkok Metropolitan Area Case Study. Springer Science & Business Media. Cerca con Google

Solo per lo Staff dell Archivio: Modifica questo record