Integrated Morphometric Analysis in GIS Environment Applied to Active Tectonic Areas

Nappi, Rosa; Alessio, Giuliana

doi:10.5772/28003

Cited by 4 publications

(6 citation statements)

References 30 publications

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“…Several seismotectonic studies have been performed for these areas. Some of these studies have made use of methodologies for the recognition of structural features in active tectonic areas integrating morphological and morphometrical data derived by DEMs (digital elevation models) with different geophysical data [29,30]. Moreover, an integrated analysis of structural, seismic and gravimetric data for the identification of active fault geometries was performed by Gaudiosi et al, in 2015 [31].…”

Section: Introductionmentioning

confidence: 99%

“…integrating morphological and morphometrical data derived by DEMs (digital elevation models) with different geophysical data [29,30]. Moreover, an integrated analysis of structural, seismic and gravimetric data for the identification of active fault geometries was performed by Gaudiosi et al, in 2015 [31].…”

Section: Introductionmentioning

confidence: 99%

“…The isoseismal reconstructed by Serva (1985) [38] shows a strong elongation parallel to the axis of the affected sector of the Apenninic chain [40]. Nappi et al, (2008) [29] studied the possible location of the 1688 seismogenic source. They have selected a lineament which strike shows coherence with the 1688 fault geometry [41].…”

Section: Introductionmentioning

confidence: 99%

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The 2013–2018 Matese and Beneventano Seismic Sequences (Central–Southern Apennines): New Constraints on the Hypocentral Depth Determination

et al. 2019

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The Matese and Beneventano areas coincide with the transition from the central to the southern Apennines and are characterized by both SW- and NE-dipping normal faulting seismogenic structures, responsible for the large historical earthquakes. We studied the Matese and Beneventano seismicity by means of high-precision locations of earthquakes spanning from 29 December 2013 to 4 September 2018. Events were located by using all of the available data from temporary and permanent stations in the area and a 1D computed velocity model, inverting the dataset with the Velest code. For events M > 2.8 we used P- and S-waves arrival times of the strong motion stations located in the study area. A constant value of 1.83 for Vp/Vs was computed with a modified Wadati method. The dataset consists of 2378 earthquakes, 18,715 P- and 12,295 S-wave arrival times. We computed 55 new fault plane solutions. The mechanisms show predominantly normal fault movements, with T-axis trends oriented NE–SW. Only relatively small E–W trending clusters in the eastern peripheral zones of the Apenninic belt show right-lateral strike-slip kinematics similar to that observed in the Potenza (1990–1991) and Molise (2002 and 2018) sequences. These belong to transfer zones associated with differential slab retreat of the Adriatic plate subduction beneath the Apennines. The Matese sequence (December 2013–February 2014; main shock Mw 5.0) is the most relevant part of our dataset. Hypocentral depths along the axis of the Apenninic belt are in agreement with previous seismological studies that place most of the earthquakes in the brittle upper crust. We confirm a general deepening of seismicity moving from west to the east along the Apennines. Seismicity depth is controlled by heat-flow, which is lower in the eastern side, thus causing a deeper brittle–ductile transition.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The 2013–2018 Matese and Beneventano Seismic Sequences (Central–Southern Apennines): New Constraints on the Hypocentral Depth Determination

et al. 2019

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“…DEMs are used (i) to calculate the dip and strike of the strata (Chorowicz et al 1991), (ii) to define the geometry of the fault plane (Koike et al 1998;Jordan et al 2005), (iii) to define morphotectonic parameters, such as the slope of the terrain, curvature of the profile, etc., (Burbank & Anderson 2001;Keller & Pinter 2002;Nappi et al 2009;Elmahdy et al 2012). The relationship between the morphology of the terrain and the tectonic deformation with geophysical data (seismic) has been analysed in some works by using GIS techniques (e.g., Jordan et al 2005;Nappi et al 2009). …”

Section: Introductionmentioning

confidence: 99%

“…The application of GIS technologies for the analysis of the potential for hydrocarbons is usually done with a large dataset, and map layers such as aerial photos or satellite imagery (raster data) and hydrology, elevation contours, and topographic landmarks (vector data) (e.g., Jordan et al 2005;Nappi et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Mapping of tecto-lineaments and their influence on sedimentological processes in a GIS environment: a case study of the Iberian trough, Spain

Hernández¹,

Moro²,

Valle-Feijóo³

et al. 2017

Geologica Carpathica

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Abstract:The subsurface sedimentary succession of the Iberian Trough, Spain was examined using geophysical t echniques (analogue seismic profiles) and inverse distance weighted (IDW) interpolation algorithm implemented in a gvGIS open source software. The results showed that the Late Cretaceous succession is divided into two depositional sequences: DS-1 (Late Albian-Middle Turonian) and DS-2 (Late Turonian-Campanian). From the analogical seismic sections, digital data and quantitative isopach maps for DS-1 and DS-2 were obtained. The new isopach maps obtained for the DS-1 sequence showed that the deeper sectors of the basin were located to the northeast and the proximal ones to the southwest. The palaeoshoreline was inferred to be situated in the N 150 direction. Across and parallel to this direction several blocks were delimited by faults, with a direction between 30 N and N 65. The thickness of the sediments in these blocks varied in direction NW-SE, with subsidence and depocentres in hangingwall and uplift in the footwall. These variations may have been related to active synsedimentary faults (e.g., Boñar and Yugueros Faults). In the DS-2 sequence, a lineament separated the smaller thicknesses to the southwest from the larger thicknesses (up to 1400 m) to the northeast. This lineament had an N170 orientation and it indicated the position of the palaeoshoreline. In the isopach map for DS-2 there were two groups of lineaments. The first showed a block structure that was limited by N100-120, they were foundering toward the S and had large thicknesses (depocentres), and rose towards the N, where there were smaller thicknesses. The second group of lineaments had a N 50-65 direction and, in this case, they had a similar interpretation as the one in DS-1. The maps obtained are of great help for geologists and permit better understanding of the geological setting and stratigraphic succession of the Late Cretaceous of the Iberian Trough.

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Watershed prioritization based on morphometric analysis coupled with multi criteria decision making

Gopinath

Nair²,

Kamalamma

et al. 2016

Arab J Geosci

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Integrated Morphometric Analysis in GIS Environment Applied to Active Tectonic Areas

Cited by 4 publications

References 30 publications

The 2013–2018 Matese and Beneventano Seismic Sequences (Central–Southern Apennines): New Constraints on the Hypocentral Depth Determination

The 2013–2018 Matese and Beneventano Seismic Sequences (Central–Southern Apennines): New Constraints on the Hypocentral Depth Determination

Mapping of tecto-lineaments and their influence on sedimentological processes in a GIS environment: a case study of the Iberian trough, Spain

Watershed prioritization based on morphometric analysis coupled with multi criteria decision making

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