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WebGIS mapFigure 1: Extract from the WebGIS Map of the Areas affected by Hydrogeological Instability Phenomena in the Territories affected by the Earthquake of 26 December 2018, developed as part of the preparatory activities for the reconstruction of the earthquake-affected areas - Figure 1: Extract of the WebGIS Map of the Areas affected by Hydrogeological Disruption Phenomena in the Territories affected by the Earthquake of 26 December 2018, drawn up as part of the preparatory activities for the reconstruction of the areas affected by the earthquakeWebGIS 2Figure 2: Damage caused by the Santo Stefano earthquake (2018) in Fleri (Zafferana Etnea). The ash and lapilli that cover the sidewalk are the products of fallout on the ground of the numerous eruptive paroxysms that occurred on Etna from 16 February 2021 onwards - Figure 2: Damage caused by the Santo Stefano's earthquake (2018) in Fleri (Zafferana Etnea). The ash and lapilli that cover the sidewalk are the products of the fallout on the ground of the numerous eruptive paroxysms that occurred on Etna from 16 February 2021 onwards
Thanks to the synergistic work between INGV and the Extraordinary Commissioner for the reconstruction of the Etna area hit by the 2018 earthquake, the webGIS map is online, aimed at guaranteeing a rapid and safe reconstruction
It is online on the website of the Extraordinary Commissioner for the reconstruction of the Etna area hit by the earthquake of 26 December 2018, WebGIS map of the areas affected by phenomena of hydrogeological instability in the territories affected by the earthquake, created in synergy with the experts of the National Institute of Geophysics and Volcanology (INGV).
A team of researchers from INGV, highly specialized in the elaboration of static and interactive maps (WebGIS) concerning both the active faults and hydrogeological and geomorphological instability affecting the area affected by the earthquake.
The Map of hydrogeological instability, the final result of the work conducted by the team coordinated by Marco Neri, Senior Researcher at INGV and scientific manager at the Commissioner's Structure, represents the cartographic element that accompanies the "Intervention Plan on Areas Affected by Hydrogeological Instability Phenomena in the Territories Affected by the Earthquake of 26 December 2018", aimed at highlighting the instability that constitute a danger for the reconstruction of inhabited centers and infrastructures of the territory. Technicians from the Invitalia Agency, which collaborates in the commissioner's activities relating to reconstruction, also took part in the elaboration of the map.
"This is the continuation of technical-scientific initiatives begun over a year ago which see a close and synergistic collaboration between INGV and the operational structure of the Extraordinary Commissioner Scalia", explains Carlo Doglioni, President of INGV. "These activities are part of the Institute's established commitment to the study and scientific study for the post-earthquake reconstruction of the areas of Etna and central Italy".
"It is a fundamental work both for the Commissioner's Structure and for the earthquake victims of Etna", underlines the Extraordinary Commissioner Salvatore Scalia, "because it will allow for safe reconstruction in an area characterized by multiple problems linked both to volcanic and seismic activity, and to hydrogeological instability".
"In fact, even if the Etna soils are very permeable and do not allow the development of an accentuated hydrographic network, phenomena of intense rainfall concentrated in a few hours can cause temporary overfloods of some streams, roads and road junctions, producing geomorphological instability and landslides in the areas steeper”, as underlined by Marco Neri, who specifies "These phenomena must necessarily be considered very carefully during the planning of reconstruction interventions".
The WebGIS Map can be consulted using i device most commonly used laptops (smartphones and tablets) and allows you to 'navigate' on the territory through different levels of information on the hydrogeological and geomorphological hazards and risks of the various locations: just type in the Map, which can be viewed with an interface of your choice between Google Maps and a digital orthophoto, the address of the building of interest.
"The publication of this Map offers a consultation and knowledge sharing service on the territory also aimed at guaranteeing the fundamental right of the citizen to know the activities carried out by the Public Administration", concludes Extraordinary Commissioner Scalia.

Link to the Extraordinary Commissioner's website
Link to the WebGIS Map
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The interactive map of hydrogeological instability for the safe reconstruction of the Etna areas hit by the earthquake in 2018 is online
Thanks to the synergistic work between INGV and the Extraordinary Commissioner for the reconstruction of the Etna area hit by the 2018 earthquake, the webGIS Map is online, aimed at ensuring a quick and safe reconstruction
The WebGIS Map of the Areas affected by Hydrogeological Disruption Phenomena in the Territories hit by the Earthquake is online on the website of the Extraordinary Commissioner for the reconstruction of the Etna area hit by the earthquake of 26th December 2018. The Map was created in synergy with experts from the National Institute of Geophysics and Volcanology (INGV).
A team of INGV researchers highly specialized in the development of static and interactive maps (WebGIS) concerning both active faults and hydrogeological and geomorphological instability affecting the area hit by the earthquake worked to elaborate this Map and that of the homogeneous microzones of active and capable faults already published in August 2020.
The Map of hydrogeological instability, the final result of the work conducted by the team coordinated by Marco Neri, Senior Researcher of the INGV and scientific manager at the Commissioner Structure, represents the cartographic element that accompanies the “Plan of Interventions on Areas affected by Hydrogeological Disruption Phenomena in the territories hit by the earthquake of 26th December 2018”, aimed at highlighting the instability that constitutes a danger for the reconstruction of inhabited centers and infrastructures of the territory. The development of the map was also attended by technicians from the Invitalia Agency, which collaborates in the Commissioner's activities relating to reconstruction.
“This is the continuation of technical-scientific initiatives begun over a year ago that see a close and synergistic collaboration between the INGV and the operational structure of the Extraordinary Commissioner Scalia”explains Carlo Doglioni, President of INGV. “These activities are part of the commitment of the Institute in the study for the post-earthquake reconstruction of the areas of Etna and central Italy”.
“It is a fundamental job both for the Commissary Structure and for the Etna earthquake victims”, underlines the Extraordinary Commissioner Salvatore Scalia, “since it will allow to reconstruct in safety in an area characterized by multiple problems linked both to volcanic and seismic activity, as well as to hydrogeological instability”.
“In fact, even if the Etna soils are very permeable and do not allow the development of an accentuated hydrographic network, phenomena of intense rainfall concentrated in a few hours can cause temporary over-flooding of some torrents and roads, producing geomorphological instability and landslides in the steeper areas”, as Marco Neri points out, who specifies “These phenomena must necessarily be considered very carefully when planning the reconstruction interventions”.
The WebGIS Map can be consulted using the most commonly used portable devices (smartphones and tablets) and allows to 'navigate' the area through different levels of information on the danger and hydrogeological and geomorphological risk of the various locations: simply typing in the Map, viewable with an interface chosen between Google Maps and a digital orthophoto, the address of the building of interest.
“The publication of this Map offers a consultation and knowledge sharing service on the territory also aimed at guaranteeing the citizen's fundamental right to know the activities carried out by the Public Administration”, concludes the Extraordinary Commissioner Scalia.

Link to the Extraordinary Commissioner's website
Link to the WebGIS Map