Study of landslides at the archaeological site of Abakainon necropolis (NE Sicily) by geomorphological and geophysical investigations

Pappalardo, G.; Imposa, Sebastiano; Barbano, Maria Serafina; Grassi, Sabrina; Mineo, Simone

doi:10.1007/s10346-018-0951-y

Cited by 27 publications

(13 citation statements)

References 46 publications

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“…Geophysical methods, which consist of a number of techniques encompassing (but not limited to) electrical resistivity tomography [6], passive seismic methods based on the horizontal-to-vertical spectral ratio [7], seismic reflection and refraction prospecting [8,9], study of environmental noise (microtremors) [10], and ground penetrating radar [11] have also been employed to investigate the LSS. Geophysical methods have the advantages of being non-invasive, easier and faster to implement, enabling spatially continuous surveys.…”

Section: Introductionmentioning

confidence: 99%

Using Satellite Interferometry to Infer Landslide Sliding Surface Depth and Geometry

et al. 2020

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Information regarding the shape and depth of a landslide sliding surface (LSS) is fundamental for the estimation of the volume of the unstable masses, which in turn is of primary importance for the assessment of landslide magnitude and risk scenarios as well as in refining stability analyses. To assess an LSS is not an easy task and is generally time-consuming and expensive. In this work, a method existing in the literature, based on the inclination of movement vectors along a cross-section to estimate the depth and geometry LSSs, is used for the first time while exploiting satellite interferometric data. Given the advent of satellite interferometric data and the related increasing availability of spatially dense and accurate measurements, we test the effectiveness of this method—here named the vector inclination method (VIM)—to four case landslides located in Italy characterized by different types of movement, kinematics and volume. Geotechnical and geophysical information of the LSS is used to validate the method. Our results show that each of the presented cases provides useful insight into the validity of VIM using satellite interferometric data. The main advantages of VIM applied to satellite interferometry are that it enables estimation of the LSS with a theoretical worldwide coverage, as well as with no need for onsite instrumentation or even direct access; however, a good density of measurement points in both ascending and descending geometry is necessary. The combined use of VIM and traditional investigations can provide a more accurate LSS model.

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Section: Introductionmentioning

confidence: 99%

Using Satellite Interferometry to Infer Landslide Sliding Surface Depth and Geometry

et al. 2020

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“…Since the Miocene, the Indian plate has been subducting northward, and the Qinghai-Tibet plateau has been uplifted continuously, which lead to extremely strong tectonic activities in the study area. Many researchers have investigated the influences of tectonic activity on geohazards through geomorphological analysis, geophysical surveys, and finite-difference analysis etc., and proved that tectonic activity was one of the main factors impacting the slope stability [24][25][26]. The faults in the area are mainly distributed along the east-west direction, and the rest are distributed along the north-south direction.…”

Section: Basic Geological Conditions Of the Study Areamentioning

confidence: 87%

Rockfall Investigation and Hazard Assessment from Nang County to Jiacha County in Tibet

et al. 2019

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The influences of rockfall on human engineering have been increasing in Tibet with the rapid development of the western region of China. This study proposed a multi-approach to carry out rockfall investigation and hazard assessment. As a case study, the rockfall hazard from Nang County to Jiacha County in Tibet was assessed. Firstly, we summarized the characteristics of spatial distributions of typical rockfall sources using Digital Elevation Model (DEM) and unmanned aerial vehicle (UAV) aerial images with resolution of 10 m. According to the thresholds of slope angle, slope aspect and elevation distribution of typical rockfall sources, we obtained all of the rockfall source areas in study area semi-automatically in ArcGIS platform. Secondly, we improved the efficiency and accuracy of detailed field investigation by using a three-dimensional (3D) point cloud model and rock mass structure extraction software. According to the analysis result, the dominant joint set was J1, whose orientation was basically consistent with the Yarlung Tsangpo Fault. The combination of J1, J2 and J4 cut the rock mass into blocks of wedge with J1 as potential sliding planes. It was indicated that the stability of the rock mass in study area was mainly controlled by the characters of joint sets. Finally, we applied the improved reclassification criteria of the Rockfall Hazard Vector (RHV) method in rockfall hazard assessment according to protection capabilities of the current protection facilities, making the result more valuable for geohazards prevention work. Based on this multi-approach, we obtained that 10.92% of the 306 provincial highway and 9.38% of the power line were threatened by potential rockfall hazards in study area. The hazard assessment results of study area were also of certain guiding value to the linear project planning and geohazards prevention work. disasters on these projects have received considerable attention. For example, Liu [3], Zhang et al. [4,5], and Li et al. [6] made deep analysis and risk assessment on the occurrence mechanisms and movement characteristics of the rockfall disasters along the Sichuan-Tibet railway and highway, respectively. In recent years, with the launching of ultra-high voltage transmission projects such as Central Tibet Grid Interconnection Project and Strategic Electricity Transmission Passage of Sichuan-Tibet Plateau, the threats of rockfall and landslide have become the key points and difficulties in design, construction and operation periods of power grid engineering.Rockfall is one of the main geohazards that deeply constrain the development of mountain area. In order to manage the prevention work and reduce the loss of rockfall disaster, many researchers have applied different methods to carry out rockfall investigation and hazard/risk analysis. Mineo et al. applied event tree analysis to assess the rockfall risk along a transportation corridor [7]. F. A. Mutar et al. made use of laser scanning data to identify rockfall sources, and three-dimensional (3D) modeling in Geographic ...

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“…We mapped geomorphological markers of active tectonics, such as deflected streams, offset streams, offset ridges, fluvial captures and landslides, similar to those mapped in other active tectonic contexts of eastern Sicily (Guarnieri and Pirrotta, 2008;Pirrotta and Barbano, 2011;Pirrotta et al, 2016;Pappalardo et al, 2018) and of other areas worldwide (e.g., Ouchi, 1985;Kirby et al, 2003;Molin et al, 2004).…”

Section: Geomorphological Methodsmentioning

confidence: 96%

New Macroseismic and Morphotectonic Constraints to Infer a Fault Model for the 9 (Mw6.1) and 11 January (Mw7.3) 1693 Earthquakes (Southeastern Sicily)

Pirrotta¹,

Barbano²

2020

Front. Earth Sci.

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This study deals with the earthquakes which occurred in southeastern Sicily in 1693 (January 9 and 11, Mw ≈ 6.1 and 7.3, respectively). Although they have been largely studied, robust and commonly accepted seismic sources are still missing. We performed a revision of the 1693 macroseismic data and, for the fore and main-shocks, modeled new NNE-SSW trending seismic sources. In the Hyblean Plateau area, we carried out an analysis of DEM and aerial photos to map tectonic features. Then, we performed field surveys on the main faults, and a morphotectonic study with the aim of characterizing the activity of mapped faults. The study revealed the presence of three main fault systems. The first is the Palazzolo-Villasmundo Fault System, composed of NNE-SSW and NE-SW trending north-west-dipping normal faults. Some of these faults could be reactivated as reverse faults. The second is the Augusta-Floridia Fault System, made of NNW-SSE and NW-SE normal faults. The third is composed of faults which have never been mapped before: the Canicattini-Villasmundo Fault System that shows both a segmented and stepping pattern, almost N-S trending and west-dipping normal faults; some of these faults show a left-lateral movement. The morphotectonic study demonstrated that the fault systems are active. Furthermore, both strike and kinematics of the studied faults well match with the regional stress field characterized by a NW-SE σ1, which in the study area is probably both affecting some pre-existing faults, the Palazzolo-Villasmundo and the Augusta-Floridia Fault Systems, and causing the formation of new faults, the Canicattini-Villasmundo Fault System. The latter system lies across the Hyblean Plateau with a total length of 35 km and, due to its aligned segmented pattern, it can be the surface expression of a master fault that seems dividing the Hyblean Plateau in two blocks. Moreover, the Canicattini-Villasmundo Fault System well fits the southern part of the 1693 revaluated seismic sources and matches with a current alignment of shocks mainly characterized by left-lateral focal mechanisms on almost N-S fault planes. Considering the possible rupture length in depth, it could manage to release Mw ≈ 7.1 earthquakes, representing a valuable candidate source for the 1693 earthquakes.

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Study of landslides at the archaeological site of Abakainon necropolis (NE Sicily) by geomorphological and geophysical investigations

Cited by 27 publications

References 46 publications

Using Satellite Interferometry to Infer Landslide Sliding Surface Depth and Geometry

Using Satellite Interferometry to Infer Landslide Sliding Surface Depth and Geometry

Rockfall Investigation and Hazard Assessment from Nang County to Jiacha County in Tibet

New Macroseismic and Morphotectonic Constraints to Infer a Fault Model for the 9 (Mw6.1) and 11 January (Mw7.3) 1693 Earthquakes (Southeastern Sicily)

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