Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography
The global sea-level rise (SLR) projections for the next few decades are the basis for developing flooding maps that depict the expected hazard scenarios. However, the spatially variable land subsidence has generally not been considered in the current projections. In this study, we use geodetic data...
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| Format: | Article |
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MDPI AG
2021-03-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/13/6/1108 |
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| author | Marco Anzidei Giovanni Scicchitano Giovanni Scardino Christian Bignami Cristiano Tolomei Antonio Vecchio Enrico Serpelloni Vincenzo De Santis Carmelo Monaco Maurilio Milella Arcangelo Piscitelli Giuseppe Mastronuzzi |
| author_facet | Marco Anzidei Giovanni Scicchitano Giovanni Scardino Christian Bignami Cristiano Tolomei Antonio Vecchio Enrico Serpelloni Vincenzo De Santis Carmelo Monaco Maurilio Milella Arcangelo Piscitelli Giuseppe Mastronuzzi |
| author_sort | Marco Anzidei |
| collection | DOAJ |
| description | The global sea-level rise (SLR) projections for the next few decades are the basis for developing flooding maps that depict the expected hazard scenarios. However, the spatially variable land subsidence has generally not been considered in the current projections. In this study, we use geodetic data from global navigation satellite system (GNSS), synthetic aperture radar interferometric measurements (InSAR) and sea-level data from tidal stations to show the combined effects of land subsidence and SLR along the coast between Catania and Marzamemi, in south-eastern Sicily (southern Italy). This is one of the most active tectonic areas of the Mediterranean basin, which drives accelerated SLR, continuous coastal retreat and increasing effects of flooding and storms surges. We focus on six selected areas, which show valuable coastal infrastructures and natural reserves where the expected SLR in the next few years could be a potential cause of significant land flooding and morphological changes of the coastal strip. Through a multidisciplinary study, the multi-temporal flooding scenarios until 2100, have been estimated. Results are based on the spatially variable rates of vertical land movements (VLM), the topographic features of the area provided by airborne Light Detection And Ranging (LiDAR) data and the Intergovernmental Panel on Climate Change (IPCC) projections of SLR in the Representative Concentration Pathways RCP 2.6 and RCP 8.5 emission scenarios. In addition, from the analysis of the time series of optical satellite images, a coastal retreat up to 70 m has been observed at the Ciane river mouth (Siracusa) in the time span 2001–2019. Our results show a diffuse land subsidence locally exceeding 10 ± 2.5 mm/year in some areas, due to compacting artificial landfill, salt marshes and Holocene soft deposits. Given ongoing land subsidence, a high end of RSLR in the RCP 8.5 at 0.52 ± 0.05 m and 1.52 ± 0.13 m is expected for 2050 AD and 2100 AD, respectively, with an exposed area of about 9.7 km<sup>2</sup> that will be vulnerable to inundation in the next 80 years. |
| first_indexed | 2024-03-10T13:14:15Z |
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| id | doaj.art-21fc49d011e548f587f6827ed1cb95c0 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T13:14:15Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
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| series | Remote Sensing |
| spelling | doaj.art-21fc49d011e548f587f6827ed1cb95c02023-11-21T10:30:51ZengMDPI AGRemote Sensing2072-42922021-03-01136110810.3390/rs13061108Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution TopographyMarco Anzidei0Giovanni Scicchitano1Giovanni Scardino2Christian Bignami3Cristiano Tolomei4Antonio Vecchio5Enrico Serpelloni6Vincenzo De Santis7Carmelo Monaco8Maurilio Milella9Arcangelo Piscitelli10Giuseppe Mastronuzzi11Istituto Nazionale di Geofisica e Vulcanologia, 00143 Roma, ItalyDipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, 70121 Bari, ItalyDipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, 70121 Bari, ItalyIstituto Nazionale di Geofisica e Vulcanologia, 00143 Roma, ItalyIstituto Nazionale di Geofisica e Vulcanologia, 00143 Roma, ItalyRadboud Radio Lab, Department of Astrophysics/IMAPP–Radboud University, P.O. Box 9010, 6500 GL Nijmegen, The NetherlandsIstituto Nazionale di Geofisica e Vulcanologia, 00143 Roma, ItalyDipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, 70121 Bari, ItalyDipartimento di Scienze Biologiche, Geologiche e Ambientali, Università degli Studi di Catania, 95129 Catania, ItalyEnvironmental Surveys S.r.l., Spin-Off Università degli Studi di Bari Aldo Moro, 74121 Taranto, ItalyEnvironmental Surveys S.r.l., Spin-Off Università degli Studi di Bari Aldo Moro, 74121 Taranto, ItalyDipartimento di Scienze della Terra e Geoambientali, Università degli Studi di Bari Aldo Moro, 70121 Bari, ItalyThe global sea-level rise (SLR) projections for the next few decades are the basis for developing flooding maps that depict the expected hazard scenarios. However, the spatially variable land subsidence has generally not been considered in the current projections. In this study, we use geodetic data from global navigation satellite system (GNSS), synthetic aperture radar interferometric measurements (InSAR) and sea-level data from tidal stations to show the combined effects of land subsidence and SLR along the coast between Catania and Marzamemi, in south-eastern Sicily (southern Italy). This is one of the most active tectonic areas of the Mediterranean basin, which drives accelerated SLR, continuous coastal retreat and increasing effects of flooding and storms surges. We focus on six selected areas, which show valuable coastal infrastructures and natural reserves where the expected SLR in the next few years could be a potential cause of significant land flooding and morphological changes of the coastal strip. Through a multidisciplinary study, the multi-temporal flooding scenarios until 2100, have been estimated. Results are based on the spatially variable rates of vertical land movements (VLM), the topographic features of the area provided by airborne Light Detection And Ranging (LiDAR) data and the Intergovernmental Panel on Climate Change (IPCC) projections of SLR in the Representative Concentration Pathways RCP 2.6 and RCP 8.5 emission scenarios. In addition, from the analysis of the time series of optical satellite images, a coastal retreat up to 70 m has been observed at the Ciane river mouth (Siracusa) in the time span 2001–2019. Our results show a diffuse land subsidence locally exceeding 10 ± 2.5 mm/year in some areas, due to compacting artificial landfill, salt marshes and Holocene soft deposits. Given ongoing land subsidence, a high end of RSLR in the RCP 8.5 at 0.52 ± 0.05 m and 1.52 ± 0.13 m is expected for 2050 AD and 2100 AD, respectively, with an exposed area of about 9.7 km<sup>2</sup> that will be vulnerable to inundation in the next 80 years.https://www.mdpi.com/2072-4292/13/6/1108Sicilysea-level risesubsidenceflooding scenario 2100 A.D.InSARGNSS |
| spellingShingle | Marco Anzidei Giovanni Scicchitano Giovanni Scardino Christian Bignami Cristiano Tolomei Antonio Vecchio Enrico Serpelloni Vincenzo De Santis Carmelo Monaco Maurilio Milella Arcangelo Piscitelli Giuseppe Mastronuzzi Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography Remote Sensing Sicily sea-level rise subsidence flooding scenario 2100 A.D. InSAR GNSS |
| title | Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography |
| title_full | Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography |
| title_fullStr | Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography |
| title_full_unstemmed | Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography |
| title_short | Relative Sea-Level Rise Scenario for 2100 along the Coast of South Eastern Sicily (Italy) by InSAR Data, Satellite Images and High-Resolution Topography |
| title_sort | relative sea level rise scenario for 2100 along the coast of south eastern sicily italy by insar data satellite images and high resolution topography |
| topic | Sicily sea-level rise subsidence flooding scenario 2100 A.D. InSAR GNSS |
| url | https://www.mdpi.com/2072-4292/13/6/1108 |
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