Comparing geological and Persistent Scatterer Interferometry data of the Sele River coastal plain, southern Italy: Implications for recent subsidence trends

Amato, Vincenzo; Aucelli, Pietro P. C.; Corrado, Giuseppe; Paola, Gianluigi Di; Matano, Fabio; Pappone, Gerardo

doi:10.1016/j.geomorph.2019.106953

Cited by 15 publications

(10 citation statements)

References 41 publications

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“…The study area is characterized by the absence of local factors (i.e., subsidence or uplift) contributing to future sea level variation, which instead characterize several coastal sectors of the Mediterranean Sea. By way of example, many Italian coastal plains suffer high subsidence rates which strongly increase the extent of the areas prone to sea inundation (e.g., Venezia and Grado lagoons along the northern Adriatic coast [73][74][75], Volturno and Sele coastal plains in southern Italy [25,76,77]). Similarly, Saylo and Marcos [78] have identified wide areas prone to inundation in the subsiding Ebro Delta.…”

Section: Discussionmentioning

confidence: 99%

Potential Sea Level Rise Inundation in the Mediterranean: From Susceptibility Assessment to Risk Scenarios for Policy Action

Rizzo

Vandelli

Gauci

et al. 2022

Water

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Coastal ecosystems and anthropic activities are prone to be affected by the negative impact of marine-related processes induced by climate change, such as erosion, flooding and permanent inundation. Studies aiming at defining potential risk scenarios represent a valuable tool for the identification of the most suitable coastal adaptation measures. After outlining sea level rise implications at the Mediterranean scale, this paper deals with inundation risk scenarios for the years 2050 and 2100 for the north-eastern sector of the Island of Gozo (Malta), central Mediterranean Sea. The analysis, carried out by applying an index-based procedure, firstly required the evaluation of the susceptibility to inundation of the investigated coastal stretch under different sea level projections. Then, the spatial combination of inundation susceptibility with the exposure and vulnerability of the area allowed identification of the most critical sectors in terms of coastal risk. The results of the analysis showed that, under the worst-case climate scenarios, 5.5% and 8.1% of the investigated coastal sector are prone to very high inundation risk (Class R4) in 2050 and 2100, respectively. In particular, the bays of Ramla and Marsalforn, which are characterized by significant economic and touristic activities, were found to be the sites where the expected impacts of future sea level rise will be higher if no management strategy and adaptation action are taken in the near future.

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Section: Discussionmentioning

confidence: 99%

Potential Sea Level Rise Inundation in the Mediterranean: From Susceptibility Assessment to Risk Scenarios for Policy Action

Rizzo

Vandelli

Gauci

et al. 2022

Water

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“…Only detailed studies at the individual sites may allow to better understand the physical processes driving ground deformation. For example, the groundwater-related deformation is the dominant cause of human-caused ground deformation in our survey (see Volturno, Sele, and Sarno plains [17,18,57,65]), and alone produces signals varying from −1 to −10 mm/yr in the vertical component of ground deformation over areas ranging in diameter up to 2-3 km, while natural subsidence due to compaction of clay-rich sediments in the subsoil is able to cause vertical rates up to −20 mm/yr over larger areas up to 25-30 km in diameter. The interplay of these two subsidence inputs locally enhances the vertical component of ground deformation to larger negative peaks.…”

Section: Discussionmentioning

confidence: 89%

“…Firstly, the regional scale annual average LOS velocity raster maps (vLOS asc -R and vLOS desc -R maps), referring to ascending and descending orbits of ERS-1/2, RADARSAT and ENVISAT PSI datasets, were produced by applying a spatial interpolation of the average velocity PS's point values with the Inverse Distance Interpolation Weighted (IDW) method. The IDW approach is commonly used to interpolate datasets formed by scattered points, thus allowing both reliable results and preservation of local variability of the data [17,18,[57][58][59]. In this study case, an interpolation method consisting of a quadratic weighting power of 2 within a 1000-m radius neighborhood was used to obtain 100-m regularly spaced grids, namely the ascending and descending LOS velocities raster maps derived from ERS-1/2, RADARSAT, and ENVISAT datasets with coherence > 0.65.…”

Section: Psi Datasets Post-processing For Ground Deformation Componentsmentioning

confidence: 99%

Analysis and Classification of Natural and Human-Induced Ground Deformations at Regional Scale (Campania, Italy) Detected by Satellite Synthetic-Aperture Radar Interferometry Archive Datasets

Matano

2019

Remote Sensing

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The high levels of geo-hydrological, seismic, and volcanic hazards in the Campania region prompted full data collection from C-band satellites ERS-1/2, ENVISAT, and RADARSAT within regional (TELLUS) and national (PST-A) projects. The quantitative analysis, interpretation, and classification of natural and human-induced slow-rate ground deformations across a span of two decades (1992–2010) was performed at regional scale (Campania, Italy) by using interferometric archive datasets, based on the Persistent Scatterer Interferometry approach. As radar satellite sensors have a side-looking view, the post-processing of the interferometric datasets allows for the evaluation of two spatial components (vertical and E-W horizontal ones) of ground deformation, while the N-S horizontal component cannot be detected. The ground deformation components have been analyzed across 89.5% of the Campania territory within a variety of environmental, topographical, and geological conditions. The main part (57%) of the regional territory was characterized during 1992–2010 by stable areas, where SAR signals do not have recorded significant horizontal and vertical components of ground deformation with an average annual rate greater than +1 mm/yr or lower than −1 mm/yr. Within the deforming areas, the coastal plains are characterized by widespread and continuous strong subsidence signals due to sediment compaction locally enhanced by human activity, while the inner plain sectors show mainly scattered spots with locally high subsidence in correspondence of urban areas, sinkholes, and groundwater withdrawals. The volcanic sectors show interplaying horizontal and vertical trends due to volcano-tectonic processes, while in the hilly and mountain inner sectors the ground deformation is mainly controlled by large-scale tectonic activity and by local landslide activity. The groundwater-related deformation is the dominant cause of human-caused ground deformation. The results confirm the importance of using Persistent Scatterer Interferometry data for a comprehensive understanding of rates and patterns of recent ground deformation at regional scale also within tectonically active areas as in Campania region.

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“…This will need to be done under a properly recalibrated sea-level reference system. Eventually, regular in situ topographic monitoring of beach-reef morphology may need to be combined with remote sensing approaches (e.g., Tosi et al 2018;Amato et al 2020;Nguyen Hao and Takewaka 2021). In the circumstances of the seismic crisis that has affected Mayotte, UAV techniques could be particularly pertinent to capture, to a higher degree of resolution than the current beach profile data, beach and reef morphology and sediment-budget changes, and especially to eventually identify any signals that may be generated by future tectonic instability and subsidence.…”

Section: Discussionmentioning

confidence: 99%

“…Fine examples have been abundantly identified in the Mediterranean (e.g. Taramelli et al 2015;Corbau et al 2019;Amato et al 2020;Anthony et al 2021). Exceptionally, high temporary mud-loading over sandy beaches adjacent to high fine-grained discharge rivers can also result in short-term (seasonal) reversible subsidence (Anthony and Dolique 2006).…”

Section: Introductionmentioning

confidence: 99%

Detecting the effects of rapid tectonically induced subsidence on Mayotte Island since 2018 on beach and reef morphology, and implications for coastal vulnerability to marine flooding

Jeanson¹,

Anthony

Charroux³

et al. 2021

Geo-Mar Lett

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Subsidence is a widespread phenomenon on the world's coasts. Mayotte, a coral reef-fringed archipelago in the SW Indian Ocean, experienced, in 2018 and 2019, 32 earthquakes with a recorded magnitude > 5 sourced by magmatic extraction from a deep reservoir 40-60 km east of the archipelago. This crisis resulted in island subsidence of up to 0.2 m. Profile measurements of three beaches in 2019-2021, referenced to benchmarks adjusted for subsidence, did not show any notable morphological change when compared to earlier profiles obtained in 2006/2008. This suggests that the rapid but limited subsidence has not significantly affected these systems, excluding eventual ecological repercussions that are not investigated here. Profile changes reflect seasonal variations in monsoon and trade-wind wave energy, and additionally the effect of local mild terrigenous sediment inputs. The sea-level rise caused by subsidence is, however, leading to more frequent spring high-tide flooding of some low back-beach areas and roads on the densely populated northeastern shores of the archipelago, the zone most affected by this tectonic movement. The case of Mayotte is interesting inasmuch as the subsidence caused by a distant submarine volcanic event has not been abrupt as in tectonically active areas nor continuous as in subsidence related, for instance, to glacio-isostatic readjustment, to continuous natural sediment compaction, or to anthropogenic loading. The crisis has been relatively quiescent since July 2021. Continuous monitoring will be needed to see how subsidence will eventually further affect the beach-reef flat systems of Mayotte.

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Comparing geological and Persistent Scatterer Interferometry data of the Sele River coastal plain, southern Italy: Implications for recent subsidence trends

Cited by 15 publications

References 41 publications

Potential Sea Level Rise Inundation in the Mediterranean: From Susceptibility Assessment to Risk Scenarios for Policy Action

Potential Sea Level Rise Inundation in the Mediterranean: From Susceptibility Assessment to Risk Scenarios for Policy Action

Analysis and Classification of Natural and Human-Induced Ground Deformations at Regional Scale (Campania, Italy) Detected by Satellite Synthetic-Aperture Radar Interferometry Archive Datasets

Detecting the effects of rapid tectonically induced subsidence on Mayotte Island since 2018 on beach and reef morphology, and implications for coastal vulnerability to marine flooding

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