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The city of Venice is very vulnerable to loss in surface elevation as a result of subsidence and eustacy because of its small elevation above sea level. The alarm of the scientific community related to this persistent problem is increasing because of the forecasts of sea level rise caused by global warming. In order to evaluate the present relative subsidence of Venice, a study has been performed by combining high precision leveling, Satellite Radar Interferometry (SRI) and tide gauge measurements. The analysis of the most recent data points out with an unprecedented detail the present ground stability of the city

Evidence of the present relative land stability of Venice, Italy, from land, sea, and space observations

Tosi L;
2002

Abstract

The city of Venice is very vulnerable to loss in surface elevation as a result of subsidence and eustacy because of its small elevation above sea level. The alarm of the scientific community related to this persistent problem is increasing because of the forecasts of sea level rise caused by global warming. In order to evaluate the present relative subsidence of Venice, a study has been performed by combining high precision leveling, Satellite Radar Interferometry (SRI) and tide gauge measurements. The analysis of the most recent data points out with an unprecedented detail the present ground stability of the city
2002
Istituto di Scienze Marine - ISMAR
29/12
3-1
3-4
Land Subsidence
Eustacy
Venice
SAR Interferometry
Leveling
Differential SAR interferometry has demonstrated a good potential to derive land subsidence information for urban areas at sub-cm vertical accuracy and relatively low cost. In addition, SAR interferometry exhibits complementary characteristics to the levelling surveys, because it has the capability to map large urban areas (i.e. where stable structures permit the formation of a coherent phase signal over time) at high spatial resolution, whereas the high precision levelling surveys can be used outside of the cities and to set up a reference point for the SAR subsidence values. In the case of the Venice historical center, where high precision levelling data are available in less than 150 benchmarks, 2-3 hundred meters spacing, SAR interferometry has the capability to monitor the vertical displacements with a resolution of 30 m. Impact factor: 2.150
0
info:eu-repo/semantics/article
262
Tosi L. ; Carbognin L.; Teatini P.; Strozzi T.; Wegmuller U.
01 Contributo su Rivista::01.01 Articolo in rivista
none
01.01 Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/430309
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