Shoreline Evolution and Environmental Changes at the NW Area of the Gulf of Gela (Sicily, Italy)

Borzì, Laura; Anfuso, Giorgio; Manno, Giorgio; Distefano, Salvatore; Urso, S.; Chiarella, Domenico; Stefano, Agata Di

doi:10.3390/land10101034

Cited by 20 publications

(15 citation statements)

References 38 publications

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“…The coastal lacustrine-palustrine system (called "Pantani di Vendicari") consists of three flooded coastal lakes and is flanked on land by widespread karst forms [18]. The evolution of the In agreement with the analytical approach of numerous studies in the Mediterranean area [47][48][49][50] and from other different parts of the world [10,[51][52][53][54][55], our geomorphological study took into consideration the evaluation of three main factors: (i) the lithology of the substratum; (ii) the rate of sea level rise; and (iii) the rate of sediment supply.…”

Section: Northern Sector: Barrier-lagoon Systemsmentioning

confidence: 82%

Quaternary Coastal Landscape Evolution and Sea-Level Rise: An Example from South-East Sicily

et al. 2021

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Coastal depositional environments are the site of complex interactions between continental and marine processes. Barrier islands are highly dynamic coastal systems, typical of these transitional environments, and are affected by sea level changes and the accumulation of transgressive deposits with the landwards migration of the coast. The offshore of Marzamemi (Syracuse Province, Sicily), in the south-eastern portion of the Hyblean foreland, represents an excellent site for the study of transgressive deposits and their connection with the sea-level changes. The available dataset consisted of new high-resolution bathymetry (Multibeam), whose description and interpretation through a Digital Elevation Model (DEM) was integrated with a grid of eighteen seismic profiles (SPARKER). In the investigated bathymetric range, from about −5 m to −60 m, a sensibly different morphological setting between the northern and southern sectors was evident. Within the whole study area, three bathymetric contours (−45 m, −35 m and −20 m) were identified and assumed as the markers of the main locations of the paleo-coastlines during the recent changes in the sea level. Along the northern sector, three submerged barrier-lagoon systems developed on a calcarenite substratum, marking important steps of the Late Quaternary sea-level rise. They coexisted with numerous karst forms (poljes and dolines). In the southern sector the transgressive environmental evolution was significantly different and submerged lagoons did not form. Here the outcropping calcarenite substratum was affected by the development of paleo-rivers and karsts structures, a tract in common along with many Mediterranean carbonate coastal areas.

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Section: Northern Sector: Barrier-lagoon Systemsmentioning

confidence: 82%

Quaternary Coastal Landscape Evolution and Sea-Level Rise: An Example from South-East Sicily

et al. 2021

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“…Molina et al [86] attribute the results of coastal erosion to local conditions and state that the erosion rate classifications should not be the same for each place. Borzi et al [87] present three factors as the main modulators of coastal erosion and clustered under specific characteristics: deltas (rivers), the dune-beach relationship, and protection infrastructure. The results of Molina et al [88] showed clustering in deltas, pocket beaches, and infrastructure zones.…”

Section: Discussionmentioning

confidence: 99%

Regional Patterns of Coastal Erosion and Sedimentation Derived from Spatial Autocorrelation Analysis: Pacific and Colombian Caribbean

Coca

Ricaurte-Villota

2022

Coasts

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Coastal erosion is a common phenomenon along the world’s coasts. Studying it is complex because such studies must cover large portions of land, and it is necessary to understand the multiple processes that interact in each area, so it is important to recognize regional patterns that allow for defining representativeness in relation to the surrounding dynamics. Spatial statistics can be used in coastal geomorphology to identify and quantify trends in coastal morphodynamics. This study analyzes and interprets the spatio-temporal patterns present in the changes in a shoreline, that is, the processes of erosion and coastal sedimentation in the Pacific and the Colombian Caribbean. The results are derived from the detection of significant changes in the coastline via satellite images. For this study, the shoreline of Colombia was digitized for the years 1986 and 2016, thus obtaining changes in the shoreline at a medium temporal scale. The Global Moran’s Index, Local Moran’s Index and Getis–Ord Index were used to explain the spatial statistics. The Global I Moran values for the Pacific were I = 0.190, z = 31.063 and p = 0.01, and for the Caribbean I = 0.624, z = 74.545 and p = 0.01, which suggests good grouping in the Caribbean and very low grouping for the Pacific. The local indices (Moran’s and Getis–Ord) allowed us to visualize and spatialize the significant points of coastal erosion and sedimentation. According to the results, three conceptual models are herein proposed that relate the indices with the geomorphological characteristics: (a) the greater the geomorphological heterogeneity, the greater the grouping; (b) the greater the geomorphological homogeneity, the lower the degree of clustering; (c) the greater the geomorphological complexity, the lower the degree of clustering. Finally, it is confirmed that coastal erosion and sedimentation processes predominate along low coasts.

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“…However, in recent times, the extensive man‐made modifications of coasts and lands, that is, ports, coastal defence structures and human settlements, become key factors in triggering coastal dynamic changes (Chu et al, 2020; Di Stefano et al, 2013; Fletcher et al, 2012). As such, many studies on shoreline changes throughout the world have been carried out over the last few years (Aladwani, 2022; Bacino et al, 2020; Borzì et al, 2021; Quang, Linh et al, 2021). Shoreline change analysis methods that have been applied worldwide comprise the use of video images introduced by Holman et al (1993), Plant and Holman (1997) and Lippmann and Holman (1989), numerical modelling by applying continuity equation in LITPACK software (Rezaee et al, 2019), and computation of End Point Rate (EPR), Linear Regression Rate (LRR) and Weighted Linear Regression Rate (WLR) statistical parameters from image analysis utilizing Digital Shoreline Analysis System (DSAS) software (Johnston et al, 2023; Laksono, Borzì et al, 2022; Santos et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…In the Mediterranean area, the long‐ and medium‐term coastal retreat emerged to be the result of persistent sediment budget alterations, as response mainly to riverine sediment discharge decrease and longshore transport changes due to the harbours or coastal defence structures emplacement (Borzì et al, 2021). The Augusta Bay is one of the primary harbour and oil refinery areas in Italy and significantly contributes to the Italian economy (Margheriti, 2021; Selvaggi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Shoreline change dynamics along the Augusta coast, eastern Sicily, South Italy

Laksono

Borzì

Distefano

et al. 2023

Earth Surf Processes Landf

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The coastal region of Augusta, eastern Sicily, Italy, is a densely populated zone, where human pressures profoundly shaped the coastal and land dynamics. So far, understanding the interaction between natural and human processes in modelling coastal geomorphology is still quite challenging. However, coastal and environmental monitoring poses the bases for managing coastal areas properly. Therefore, the aim of this research was first to understand the medium‐term shoreline changes along Augusta Bay between 1972 and 2021, and then assess the main local coastal modifications determined by the increasing coastal armouring. To do so, the shorelines dataset was extracted from Landsat and Sentinel‐2 satellite imageries using the NDWI and mNDWI methods and then statistical parameters were computed using Digital Shoreline Analysis System (DSAS). Results show that this coastal fringe experienced significant shoreline recession over the studied time interval. Negative shoreline shifts are higher in correspondence with torrent deltas, as a result of the increasing human and natural forces insisting on the land and coastal environments. Since 1970s, Augusta Bay registered a significant increase in artificial coastal length and a coastal armouring index of Maximal level was reached today.

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Shoreline Evolution and Environmental Changes at the NW Area of the Gulf of Gela (Sicily, Italy)

Cited by 20 publications

References 38 publications

Quaternary Coastal Landscape Evolution and Sea-Level Rise: An Example from South-East Sicily

Quaternary Coastal Landscape Evolution and Sea-Level Rise: An Example from South-East Sicily

Regional Patterns of Coastal Erosion and Sedimentation Derived from Spatial Autocorrelation Analysis: Pacific and Colombian Caribbean

Shoreline change dynamics along the Augusta coast, eastern Sicily, South Italy

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