Electrical resistivity tomography investigations in the ufita Valley (southern Italy).

2008 ◽  
Vol 51 (1) ◽  
Author(s):  
A. Giocoli ◽  
C. Magrì ◽  
P. Vannoli ◽  
S. Piscitelli ◽  
E. Rizzo ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
Southern Italy ◽  
Normal Fault ◽  
Fluvial Sediments ◽  
Resistivity Tomography ◽  
Fine Grained ◽  
Sedimentary Deposits ◽  
Lacustrine Deposits ◽  
Sedimentary Deposit

Several Electrical Resistivity Tomography (ERT) surveys have been carried out to study the subsurface structural and sedimentary settings of the upper Ufita River valley, and to evaluate their efficiency to distinguish the geological boundary between shallow Quaternary sedimentary deposits and clayey bedrock characterized by moderate resistivity contrast. Five shallow ERTs were carried out across a morphological scarp running at the foot of the northeastern slope of the valley. This valley shoulder is characterized by a set of triangular facets, that some authors associated to the presence of a SW-dipping normal fault. The geological studies allow us to interpret the shallow ERTs results obtaining a resistivity range for each Quaternary sedimentary deposit. The tomographies showed the geometrical relationships of alluvial and slope deposits, having a maximum thickness of 30-40 m, and the morphology of the bedrock. The resistivity range obtained for each sedimentary body has been used for calibrating the tomographic results of one 3560m-long deep ERT carried out across the deeper part of the intramountain depression with an investigation depth of about 170 m. The deep resistivity result highlighted the complex alluvial setting, characterized by alternating fine grained lacustrine deposits and coarser gravelly fluvial sediments.

scholarly journals Electrical Resistivity Tomography surveys for the geoelectric characterization of the Montaguto landslide (southern Italy)

2016 ◽  
Author(s):  
Jessica Bellanova ◽  
Giuseppe Calamita ◽  
Alessandro Giocoli ◽  
Raffaele Luongo ◽  
Angela Perrone ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
Southern Italy ◽  
Drainage System ◽  
Civil Protection ◽  
Southern Apennines ◽  
Resistivity Tomography ◽  
Campania Region ◽  
Landslide Body

Abstract. This paper reports the results of a geoelectrical survey carried out to investigate the Montaguto earth-flow, located in the southern Apennines (Campania Region, southern Italy). The aim of the survey was to reconstruct the geometry of the landslide body, to improve the knowledge on the geological setting and to indirectly test the effectiveness of a drainage system. Although electrical resistivity contrasts in the electrical images were not very pronounced, due to the lithological characteristic of the outcropping lithotypes, it was possible to observe the presence of both lateral and vertical discontinuities that were associated with lithological boundaries, physical variation of the same material and sliding surfaces. The geoelectrical information obtained was provided to the Italian National Civil Protection Department technicians and was considered for the planning of more appropriate actions for the stabilization and safety of the slide.

scholarly journals Geoelectrical Surveys for Characterization of the Coastal Saltwater Intrusion in Metapontum Forest Reserve (Southern Italy)

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Antonio Satriani ◽  
Antonio Loperte ◽  
Vito Imbrenda ◽  
Vincenzo Lapenna
Keyword(s):  
Electrical Resistivity ◽  
High Resolution ◽  
Saltwater Intrusion ◽  
Electrical Resistivity Tomography ◽  
Southern Italy ◽  
Soil Salinization ◽  
Forest Reserve ◽  
Resistivity Tomography ◽  
Integrated Study

A geoelectrical survey was carried out in the Metapontum Forest Reserve located along the Ionian coast of the Basilicata region (Southern Italy). In this work we used the method of two-dimensional electrical resistivity tomography for obtaining high-resolution electrical images in the investigated site. In particular, three electrical resistivity tomography, all orthogonal to the coastline, in the investigated area were carried out. To complete and integrate the geophysical data, soil and groundwater samplings, seventeen and five, respectively, were analyzed using chemical physical techniques. Geoelectrical survey, supported by laboratory analysis of soil and water samples have revealed the presence of a process of saltwater in coastal Forest Reserve of Metapontum, which have caused the decline of the existing pine forest with the consequent erosion and desertification problems. The results have disclosed the way to identify and discriminate large areas affected by intensive soil salinization and high resolution electrical images of the subsurface electrical resistivity plays a key role in delineating the saltwater intrusion front in coastal areas. Furthermore, our integrated study represents a contribution to the future programs for the protection, planning, and management of the terrestrial and marine resources in this coastal area.

Sign in / Sign up

Export Citation Format

Share Document