scholarly journals Digital Field Mapping and Drone-Aided Survey for Structural Geological Data Collection and Seismic Hazard Assessment: Case of the 2016 Central Italy Earthquakes

2020 ◽  
Vol 10 (15) ◽  
pp. 5233 ◽  
Author(s):  
Daniele Cirillo
Keyword(s):  
Remote Sensing ◽  
Active Fault ◽  
Central Italy ◽  
Seismic Hazard Assessment ◽  
Integrated Approach ◽  
Seismic Sequence ◽  
Geological Data ◽  
Digital Device ◽  
Remote Sensing Techniques ◽  
High Degree

In this work, a high-resolution survey of the coseismic ground ruptures due to the 2016 Central Italy seismic sequence, performed through a dedicated software installed on a digital device, is strengthened by the analysis of a set of drone-acquired images. We applied this integrated approach to two active sections of the Mt Vettore active fault segment which, in the Castelluccio di Norcia plain (central Italy), were affected by surface faulting after the most energetic events of the sequence: the 24 August, Mw 6.0, Amatrice and 30 October, Mw 6.5, Norcia earthquakes. The main aim is to establish the range in which the results obtained measuring the same structures using different tools vary. An operating procedure, which can be helpful to map extensive sets of coseismic ground ruptures especially where the latter affects wide, poorly accessible, or dangerous areas, is also proposed. We compared datasets collected through different technologies, including faults attitude, dip-angles, coseismic displacements, and slip vectors. After assessing the accuracy of the results, even at centimetric resolutions, we conclude that the structural dataset obtained through remote sensing techniques shows a high degree of reliability.

scholarly journals Integrating Airborne Laser Scanning and 3D Ground-Penetrating Radar for the Investigation of Protohistoric Structures in Croatian Istria

2021 ◽  
Vol 11 (17) ◽  
pp. 8166 ◽  
Author(s):  
Federico Bernardini ◽  
Giacomo Vinci ◽  
Emanuele Forte ◽  
Arianna Mocnik ◽  
Josip Višnjić ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Cross Sections ◽  
Laser Scanning ◽  
Integrated Approach ◽  
Heritage Management ◽  
Burial Mound ◽  
Volume Reconstruction ◽  
Remote Sensing Techniques ◽  
Ground Penetrating ◽  
2D And 3D

We present the investigation of two rather ephemeral archaeological sites located in the municipality of Oprtalj/Portole (Croatian Istria) by means of integrated archaeological, geophysical and remote sensing techniques. The results obtained confirm the first interpretation of these contexts; a protohistoric burial mound and a small hillfort, respectively. We further obtained detailed information about both deposits through 2D and 3D remote sensing and geophysical studies that produced maps, volumes, profiles and cross-sections. At the first site, the volume reconstruction of both the inner stone core and the superimposed earth of the putative stone mound also allowed us to estimate the labour necessary to erect the structure. In conclusion, our study demonstrates that the integrated approach can be valuable not only to acquire novel data about the archaeological deposits but also to calibrate future investigations and to plan effective measures for heritage management, monitoring and valorization.

scholarly journals Soil gas geochemical behaviour across buried and exposed faults during the 24 august 2016 central Italy earthquake

2016 ◽  
Vol 59 ◽  
Author(s):  
Giancarlo Ciotoli ◽  
Alessandra Sciarra ◽  
Livio Ruggiero ◽  
Aldo Annunziatellis ◽  
Sabina Bigi
Keyword(s):  
Active Fault ◽  
Central Italy ◽  
Soil Gas ◽  
Seismic Sequence ◽  
Spatial Behaviour ◽  
Fault Rupture ◽  
Central Italy Earthquake ◽  
Geochemical Behaviour ◽  
Buried Fault ◽  
Soil Gas Survey

<p>Following the earthquake (M<sub>L</sub>=6.0) of 24 August 2016 that affected large part of the central Apennine between the municipalities of Norcia (PG) and Amatrice (RI) (central Italy), two soil gas profiles (i.e., <sup>222</sup>Rn, <sup>220</sup>Rn, CO<sub>2</sub> and CO<sub>2</sub> flux) were carried out across buried and exposed coseismic fault rupture of the Mt. Vettore fault during the seismic sequence. The objective of the survey was to explore the mechanisms of migration and the spatial behaviour of different gas species near still-degassing active fault. Results provide higher gas and CO<sub>2</sub> flux values (about twice for <sup>222</sup>Rn and CO<sub>2</sub> flux) in correspondence of the buried sector of the fault than those measured across the exposed coseismic rupture. Anomalous peaks due to advective migration are clearly visible on both side of the buried fault (profile 1), whereas the lower soil gas concentrations measured across the exposed coseimic rupture (profile 2) are mainly caused by shallow and still acting diffusive degassing associated to faulting during the seismic sequence. These results confirm the usefulness of the soil gas survey to spatially recognise the shallow geometry of hidden faults, and to discriminate the geochemical migration mechanisms occurring at buried and exposed faults related to seismic activity.</p>

scholarly journals Testing the value of a multi-scale gravimetric analysis in characterizing active fault 2 geometry at hypocentral depths: the 2016-2017 Central Italy seismic sequence

2018 ◽  
Vol 61 (Vol 61 (2018)) ◽  
Author(s):  
Paola Luiso ◽  
Valeria Paoletti ◽  
Rosa Nappi ◽  
Germana Gaudiosi ◽  
Federico Cella ◽  
...  
Keyword(s):  
Active Fault ◽  
Central Italy ◽  
Gravimetric Analysis ◽  
Seismic Sequence ◽  
Multi Scale

scholarly journals REMOTE SENSING TECHNIQUES IN DISASTER MANAGEMENT: AMYNTEON MINE LANDSLIDES, GREECE

2018 ◽  
Vol XLII-3/W4 ◽  
pp. 269-276
Author(s):  
A. Karagianni ◽  
I. Lazos ◽  
A. Chatzipetros
Keyword(s):  
Remote Sensing ◽  
Disaster Management ◽  
Satellite Data ◽  
Urban Areas ◽  
Large Scale ◽  
Fault Zones ◽  
Landsat 8 ◽  
Geological Data ◽  
Ex Post ◽  
Remote Sensing Techniques

<p><strong>Abstract.</strong> Natural or man-made disasters are phenomena that can affect large areas and have many environmental, societal and economic impacts. Landslides are among the major disasters of large scale that may affect the natural environment as well as urban areas, often causing massive destruction, loss of property, or even fatalities worldwide. Developing tools that are effective for disaster management is imperative to monitor and mitigate their effect. Satellite data and remote sensing techniques, combined with geological data and studies can provide valuable information regarding monitoring of natural hazards in general and especially of landslides. This paper concerns the ex ante and ex post study of a complex set of landslides that occurred in the lignite mine of Amynteon in north-western Greece (June 2017), where large masses of Neogene lacustrine and Quaternary fluvial sediments were detached and moved. The study area is located at the transfer zone between the overlapping tips of two large NE-SW trending normal fault zones affecting the overlying sediments: the NW-dipping Anargyri fault and the SE-dipping Vegora fault. The fragmentation caused by these fault zones weakened the material cohesion, which was further degraded by mining activities and hydrogeological factors, leading to the catastrophic event. The landslide occurred in along the south faces of the mine, resulting to extended collapses, destruction of mining machinery, evacuation of the adjacent Anargyri village and a big financial impact that has not yet been determined. Landsat 8 and Sentinel-2 satellite data acquired before and after the event are being used. Digital image processing techniques are applied for change detection. In addition, geological data are being used to provide information about the geological background of the area and landslides vulnerability. Visual interpretation of the area affected by the landslides is also being done, contributing to the overall study.</p>

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