1,721,087 research outputs found
Menichetti (M), ... Quoius forma virtutei parisumafuit... Ciste prenestine e cultura di Roma medio-republicana, 1995
No full textJannot Jean-René. Menichetti (M), ... Quoius forma virtutei parisumafuit... Ciste prenestine e cultura di Roma medio-republicana, 1995. In: Revue des Études Anciennes. Tome 101, 1999, n°1-2. pp. 286-287
Menichetti (M), ... Quoius forma virtutei parisumafuit... Ciste prenestine e cultura di Roma medio-republicana, 1995
No full textJannot Jean-René. Menichetti (M), ... Quoius forma virtutei parisumafuit... Ciste prenestine e cultura di Roma medio-republicana, 1995. In: Revue des Études Anciennes. Tome 101, 1999, n°1-2. pp. 286-287
AFATA (Active FAult Tectonic Analysis): a semi-automatic tool on ArcGIS.for estimating fault offset on superficial ruptures
No full textThe automation of data acquisition and calculation is advancing in many sectors. At the same time, the use of software and the difficulty, in certain cases, in programming languages could lead to various problems.
In relation to the automation of fault offset estimation, many authors have given their contribution (Stewart et al., 2018; Wolfe et al., 2020) combining steps in GIS environment with external programming languages.
AFATA is a new toolbox proposal for ArcGIS® based on Model Builder and on ArcPy language for the evaluation of the three components of rupture offset (vertical, horizontal and along plane offsets) of a normal fault. This tool, that only needs the use of GIS environment, is intuitive and does not require many steps from the user. The semi-automatic process allows the operator to modify and improve the shapefiles on which the analysis is carried out.
The AFATA main inputs are (i) line shapefiles, drawn by the operator, defining the two limits of the fault offset, and (ii) a slope raster obtained through a Digital Elevation Model (DEM) with a resolution comparable with the fault geometry. The result is a line shapefile containing the sampling transects whose frequency is chosen by the user along the fault plane. The measurements (maximum, minimum and average) of the three offset components and the value of the slope angle for each transect are shown in the attribute table. The application and validation of the proposed toolbox are located in the Central Apennines of Italy on the surface ruptures related to the 2016 earthquakes. The study area was surveyed with a digital geological field survey and with low-altitude aerial photos, using an Unmanned Aerial Vehicle (UAV). A 3D Virtual Outcrops
Model (VOM) was generated by the Structure from Motion – MultiView Stereo (SfM-MVS) photogrammetry (Westoby et al., 2012; Tavani et al., 2016); from this, a 0.009 m resolution ortophoto and a 0.02 m resolution DEM were derived for spatial analysis in ArcGIS 10.8.1.
The AFATA application may contribute to obtain a higher number of measurements by regularly scanning
the three components of the slip fault, in particular on ruptures difficult to access. The extent of the error for this tool primarily depends on the accuracy with which the user draws the limits; the estimated error obtained on the study area is about 10% of the total slip
Groundwater temperature as a natural tracer to characterize hydraulic behaviour and geometry of carbonate aquifers:Mt. Nerone karst system, central Italy
Full text linkTemperature variations in groundwater discharge from the Giordano karst system (northern Apennines) have been observed continuously for six months (from January 2016 to July 2016), to determine the flow patterns and geometrical properties of aquifer. The karst system discharge about 32.2 L/s on average during over the hydrological year and it’s characterized by two outlets: a basal continuous spring (BCS) with a mean discharge of 8.9 L/s and an upper-intermittent spring (UIS) with a mean discharge of 23.3 L/s, located about 60 m above the previous one. Results show significant difference in the two spring outlets between the time lags as well as non-simultaneous and not analogue responses of temperature (T) to the same recharge events: temperature of UIS range from 9.7 to 10.7°C whereas temperature of BCS remain rather stable, ranging from 9.8 to 9.9°C. This data suggests
a stratification of the water along the aquifer probably associated by different residence times and linked to the structural organization of karst aquifer (conduit and fracture networks): deeper and oldest water in the BCS and youngest water in the UIS
Groundwater Circulation in Fractured and Karstic Aquifers of the Umbria-Marche Apennine
Full text linkThe Umbria-Marche Apennine has a large number of springs that drain water stored
in carbonate formations. Spring groundwater constitutes a crucial freshwater resource for many
countries, regions, and cities around the world. This study aimed to understand the hydrological
mechanisms behind groundwater circulation and their relationship to the structural and stratigraphic
settings of specific aquifers. Recession analysis and time series analysis were applied to the daily
discharge of six springs monitored over eight years. Both analyses indicated the presence of two
types of aquifers: aquifer with unimodal behavior and aquifer with bimodal behavior. The first are
characterized by two hydrodynamic sub-regimes, in which fracture networks control the baseflow and
conduit networks control the quickflow. In contrast, other springs present only one hydrodynamic
sub-regime related to fracture network drainage. Time series analysis confirms the results of recession
analysis, showing a large memory eect and a large response time, implying the dominance of the
baseflow sub-regime. These results indicate that the Maiolica Formation is characterized by a high
degree of fracturation and slight karstification, which control infiltration and percolation, whereas
the Calcare Massiccio Formation regulates groundwater circulation in the deeper zones of the aquifer,
characterized by a high degree of karstification through moderately developed conduit networks
Etudes scientifiques dans deux grottes aménagées italiennes. Civita m. et al. -1990 Galdenzi S., Menichetti M. ed. -1990 -"Il carsismo della gola di Frasassi
No full textChoppy Jacques. Etudes scientifiques dans deux grottes aménagées italiennes. Civita m. et al. -1990 Galdenzi S., Menichetti M. ed. -1990 -"Il carsismo della gola di Frasassi. In: Karstologia : revue de karstologie et de spéléologie physique, n°17, 1er semestre 1991. p. 58
Etudes scientifiques dans deux grottes aménagées italiennes. Civita m. et al. -1990 Galdenzi S., Menichetti M. ed. -1990 -"Il carsismo della gola di Frasassi
No full textChoppy Jacques. Etudes scientifiques dans deux grottes aménagées italiennes. Civita m. et al. -1990 Galdenzi S., Menichetti M. ed. -1990 -"Il carsismo della gola di Frasassi. In: Karstologia : revue de karstologie et de spéléologie physique, n°17, 1er semestre 1991. p. 58
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