Assessment of the 1783 Scilla landslide-tsunami effects on Calabria
and Sicily coasts through numerical modeling

Zaniboni, Filippo; Pagnoni, Gianluca; Gallotti, Glauco; Paparo, Maria Ausilia; Armigliato, Alberto; Tinti, Stefano

doi:10.5194/nhess-2019-94

Cited by 3 publications

(6 citation statements)

References 19 publications

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“…Among the various investigations, we have selected the Vol. 177, (2020) A New Approach for Landslide Modeling: Application to the Scilla simulation performed via the block-based model UBO-Block 1D in Zaniboni et al (2016Zaniboni et al ( , 2019 as a reference study to test the performance of the model UBO-Inter. The reference model depicted the Scilla landslide as a chain of 10 blocks with prescribed lateral spreading and prescribed slide CoM trajectory.…”

Section: Discussionmentioning

confidence: 99%

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A New Approach for Landslide Modeling: Application to the Scilla 1783 Tsunamigenic Landslide, South Italy

Gallotti

Tinti

2020

Pure Appl. Geophys.

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In this study, we present a new 2D numerical model, UBO-Inter, able to simulate the motion of a body sliding down a generic surface. Such a body is represented as a mechanical system of a finite number of point masses, where the points can be viewed as the projections on the sliding surface of the centers of mass of the elements which the system is discretized into. The masses are strictly adherent to the surface and interact with the neighbor masses through internal forces. The entire system can be seen as a 2D irregular grid where the masses occupy the nodes of the grid, and each grid side connects a pair of interacting masses. The external forces acting on the masses are gravity, which is the driving force, the reaction force of the sliding surface, the basal friction and the drag exerted by the environmental fluid (typically water, for a slide moving partially or totally underwater). The system is governed by a set of differential equations that are solved through a fourth-order Runge–Kutta scheme. After providing the formulation of the problem and a simple example admitting an exact solution that serves to illustrate the internal forces, we validate the model on the 1783 Scilla (Calabria region, Italy) landslide, that is a well-known catastrophic event that caused a lethal tsunami killing more than 1500 people. This case has been already widely studied and thus can be used as a benchmark for landslide models. The outputs of the model UBO-Inter in terms of time-histories of point-mass velocities, run-out and final deposit, are found to be in agreement with observations and with results published in literature and obtained through different numerical techniques.

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Section: Discussionmentioning

confidence: 99%

“…These can be considered observation data. The area that was assumed by Zaniboni et al (2016Zaniboni et al ( , 2019 to be potentially swept by the landslide is portrayed as hatched in Fig. 5 and crosses the deposit.…”

Section: The 1783 Scilla Landslidementioning

confidence: 99%

A New Approach for Landslide Modeling: Application to the Scilla 1783 Tsunamigenic Landslide, South Italy

Gallotti

Tinti

2020

Pure Appl. Geophys.

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“…Italy, throughout history, has been hit by several major tsunamis. Among these are the tsunamis that affected the coasts of Puglia in 1627, the eastern coasts of Sicily in 1693, the coasts of Calabria and Sicily in 1783 and again the Calabrian coasts in 1905 [33,34,35,36].…”

Section: Tsunami Hazard In the Mediterranean Area And Italian Coastmentioning

confidence: 99%

Something Still Remains: Factors Affecting Tsunami Risk Perception on the Coasts Hit by the Reggio Calabria – Messina 1908 Event (Italy)

Cerase¹,

Cugliari²

2023

Preprint

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In the Mediterranean, the probability of tsunamis is lower than in other coastal areas such as the Pacific Ring, where tsunamis are more familiar and memory of past events and anticipatory signals and protective measures is preserved by local culture, along with media and scientific sources, therefore tsunami risk is more likely to be downplayed or neglected. Past research identified socio-demographic and spatial factors that may affect tsunami risk perception. This research is based on a sample of 5842 CATI interviews to investigate whether and how risk perception and risk knowledge were affected by a major event such as the 1908 Reggio Calabria Messina tsunami, by making a comparison between areas hit by that event and unaffected areas, also providing some explanatory hypotheses. Despite differences between Calabria and Sicily, data anyway show higher levels of tsunami risk perception in the area affected by the 1908 event, along with a major role of interpersonal sources, playing a relevant role in information gathering and understanding. Research also suggests the need to better integrate different sources of knowledge to improve people’s understanding as to effectively cope with tsunami risk.

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“…The red contour marks the submarine deposit observed in the geo-marine surveys [38]. (Source: Satellite view obtained by Google Earth [27]. )…”

Section: Historical Reviewmentioning

confidence: 99%

“…On the other side, in Sicily, the tsunami mainly hit the village of Torre Faro: a very high wave swept the beach dragging various boats away and causing the death of 26 people. The water hit the beach area from 350 m to about 1 km flooding cultivated fields and vineyards [27]. 3 METHODOLOGY Risk is a probabilistic concept, it is related with the probability of occurrence of a certain event that can cause harm to people.…”

Section: Historical Reviewmentioning

confidence: 99%

Analysis of Areas Inundated by Tsunamis Induced by Earthquakes and Landslides in the Region of Calabria, Italy

2020

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Tsunamis are catastrophic events that occur especially in the Pacific or the Indian Ocean, causing violent inundations and destroying entire cities near the coast. They can also occur in the Mediterranean Sea, but their magnitude is smaller than in the Pacific or Indian Oceans; their effects however can be as fatal, because of high coastal exposure and vulnerability. These have been growing in the last few years as a result of increased coastal anthropization. This situation leads to a careful reflection on assessments of tsunami hazard due to earthquakes or landslides and of the consequences of tsunami impacts. The paper discusses these issues through an application along the Calabrian coasts in southern Italy. Our analysis starts from the description of the phenomena that have already taken place in order to assess the risk associated with any tsunami and to manage the consequent risk affected areas. Tsunamis are due to earthquakes or landslides mainly because of the high seismicity of the particular area. Many seismic events took place over time causing the onset of landslides and coastal floods. In particular the most catastrophic were the landslide-induced tsunami in Scilla in 1783, and the tsunami in the Strait of Messina in 1908, both in Calabria. In our case study, the Scilla tsunami has been treated with reference to the reconstruction of the landslide that induced it and the related flood. It is important to interpret the mechanisms of induction and propagation of these phenomena through events that have already occurred. In this way, we can have a complete picture of the risk and management of these phenomena in our territory, essential for human safety. The reconstruction of the event was made using QGIS and MATLAB software. QGIS was used to reconstruct the geometric domain, to interpret bathymetric data provided by the IGM (the Military Geographical Institute) and to map areas with risk of flooding, necessary for the management phase. MATLAB was used to reconstruct landslide geometry and the propagation mechanism.

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Assessment of the 1783 Scilla landslide-tsunami effects on Calabria and Sicily coasts through numerical modeling

Cited by 3 publications

References 19 publications

A New Approach for Landslide Modeling: Application to the Scilla 1783 Tsunamigenic Landslide, South Italy

A New Approach for Landslide Modeling: Application to the Scilla 1783 Tsunamigenic Landslide, South Italy

Something Still Remains: Factors Affecting Tsunami Risk Perception on the Coasts Hit by the Reggio Calabria – Messina 1908 Event (Italy)

Analysis of Areas Inundated by Tsunamis Induced by Earthquakes and Landslides in the Region of Calabria, Italy

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