Application of kriging with external drift to estimate hydraulic conductivity from electrical-resistivity data in unconsolidated deposits near Montalto Uffugo, Italy

Troisi, S.; Fallico, Carmine; Straface, Salvatore; Migliari, E.

doi:10.1007/s100400000083

Cited by 46 publications

(33 citation statements)

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“…One extension is Kriging with External Drift (KED), which uses a linear regression model with another (external) georeferenced variable for the trend. The KED method has been applied to rainfall estimation [17], piezometric contouring [18], temperature mapping [19] or hydraulic conductivity estimation [20] using different variables as the external drift, including elevation, groundwater modelling solutions or electrical resistivity. However, this method has never been applied using InSAR data as the external drift.…”

Section: Introductionmentioning

confidence: 99%

Interpolation of GPS and Geological Data Using InSAR Deformation Maps: Method and Application to Land Subsidence in the Alto Guadalentín Aquifer (SE Spain)

et al. 2016

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Land subsidence resulting from groundwater extractions is a global phenomenon adversely affecting many regions worldwide. Understanding the governing processes and mitigating associated hazards require knowing the spatial distribution of the implicated factors (piezometric levels, lithology, ground deformation), usually only known at discrete locations. Here, we propose a methodology based on the Kriging with External Drift (KED) approach to interpolate sparse point measurements of variables influencing land subsidence using high density InSAR measurements. In our study, located in the Alto Guadalentín basin, SE Spain, these variables are GPS vertical velocities and the thickness of compressible soils. First, we estimate InSAR and GPS rates of subsidence covering the periods 2003-2010 and 2004-2013, respectively. Then, we apply the KED method to the discrete variables. The resulting continuous GPS velocity map shows maximum subsidence rates of 13 cm/year in the center of the basin, in agreement with previous studies. The compressible deposits thickness map is significantly improved. We also test the coherence of Sentinel-1 data in the study region and evaluate the applicability of this methodology with the new satellite, which will improve the monitoring of aquifer-related subsidence and the mapping of variables governing this phenomenon.

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Section: Introductionmentioning

confidence: 99%

Interpolation of GPS and Geological Data Using InSAR Deformation Maps: Method and Application to Land Subsidence in the Alto Guadalentín Aquifer (SE Spain)

et al. 2016

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“…Le besoin de recourir à des estimations indirectes des propriétés hydrodynamiques des réservoirs, moins coûteuses que les essais hydrauliques in situ, à l'aide notamment de la prospection géoélectrique, est assez largement partagé dans la littérature (TROISI et al, 2000).…”

Section: Introductionunclassified

“…Des estimations géostatistiques des propriétés hydrodynamiques basées sur les paramètres géoélectriques ont également été proposées par certains auteurs (AHMED et DE MARSILY, 1987;AHMED et al, 1988;CASSIANI et MEDINA, 1997;KUPFERSBERGER et BLÖSCHL, 1995;TROISI et al, 2000). L'estimation géostatistique a l'avantage d'incorporer la corrélation spatiale entre les valeurs des paramètres (ISAAK et SRIVASTAVA, 1989).…”

Section: Introductionunclassified

Estimation du champ de transmissivité d’un aquifère alluvial fortement hétérogène à partir de la résistance transversale. Application à la nappe du Haouz de Marrakech (Maroc)

Sinan

Razack

2006

rseau

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Résumé Cet article a pour objectif l’estimation indirecte de la transmissivité (T, m2/s) de l’aquifère du Haouz (6 000 km2) au Maroc, à partir de la résistance transversale (R, Ωm2). L’aquifère du Haouz est constitué par une succession complexe de séries lenticulaires, argilo-marneuses ou formées d’éléments grossiers, d’âge plio-quaternaire reposant sur un substratum marneux d’âge miocène. Une importante base de données des valeurs de transmissivité (≈500) et de résistance transversale (≈2 500) a été compilée. Une recherche a ensuite été effectuée pour retenir les couples (Ti, Ri) caractérisant le même volume d’aquifère. Deux cas de résistance transversale sont considérés : 1) résistance transversale de l’ensemble mio-plio-quaternaire (RA); 2) résistance transversale des lentilles perméables uniquement (RB). La meilleure régression, de forme géométrique, est obtenue entre la transmissivité et la résistance transversale des lentilles grossières perméables. Cette régression est sensiblement améliorée lorsque les valeurs (T, RB) d’un même couple sont ramenées à un même état piézométrique de la nappe, après correction de la transmissivité en fonction des variations piézométriques de la nappe. On procède ensuite à l’estimation indirecte du champ de transmissivité de l’aquifère à l’échelle régionale à l’aide de l’équation de régression précédemment établie. Le champ de transmissivité ainsi estimé est validé par comparaison de ses propriétés statistiques (tendance centrale, dispersion, loi de distribution) à celles de l’échantillon des valeurs de transmissivité mesurées par pompages d’essais.

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“…The importance of this technique is the ability to correlate between the electrical properties of the geologic formations and their fluid content (Flathe 1955(Flathe , 1970Zohdy 1969;Ogilvy 1970;Zohdy et al 1974; and many others). The geoelectric technique has been used in a wide spectrum, namely to investigate the geometry of the aquifers (Robain et al 1995(Robain et al , 1996Cherry et al 1996; and many others), to estimate the depth and the nature of the alluvium and aquifer boundaries and its location (Young et al 1998;Lashkaripour et al 2005;Al-Garni 2004a, b, 2005, 2009Al-Garni et al 2005, 2006Hassanein et al 2007), to delineate the freshwater/saline water interface (El-Waheidi et al 1992;Yechieli 2002;Choudhury et al 2001), to evaluate aquifer porosity (Jackson et al 1978), to estimate water content (Kesseles et al 1985), to measure hydraulic conductivity (Yadav and Abolfazli 1998;Troisi et al 2000), to estimate transmissivity (Kossinski and Kelly 1981), to determine specific yield (Frohlich and Kelly 1987), and to delineate groundwater contamination (Kelly 1976;Kaya 2001). However, the limitation of the geoelectrical technique is expected if the ground is inhomogeneous and anisotropic (Al-Garni 1996;Matias 2002).…”

Section: Introductionmentioning

confidence: 99%

Magnetic and DC resistivity investigation for groundwater in a complex subsurface terrain

Al‐Garni

2009

Arab J Geosci

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Subsurface structures associated with hard rocks are very important for groundwater. Wadi Fatima runs through the volcanic and metamorphic rocks of the Arabian Shield which are characterized by higher magnetization than the overlaying alluvium sediments. Magnetic and direct current (DC) resistivity methods have been used for groundwater exploration in the northern part of Wadi Fatima. The magnetic survey was used mainly to map the subsurface structures, using analytic signal algorithm, of the study area. The DC resistivity method was applied to describe the lithologic domain as a function of depth, depending on their electrical property contrasts where it provided a good indication for water bearing formations. The magnetic and DC resistivity interpretations were confirmed by drilling which have provided a clear idea about the hydrogeological regime of the study area. The selected drilled well is successfully productive and it produces 30 m 3 /h.

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Application of kriging with external drift to estimate hydraulic conductivity from electrical-resistivity data in unconsolidated deposits near Montalto Uffugo, Italy

Cited by 46 publications

References 10 publications

Interpolation of GPS and Geological Data Using InSAR Deformation Maps: Method and Application to Land Subsidence in the Alto Guadalentín Aquifer (SE Spain)

Interpolation of GPS and Geological Data Using InSAR Deformation Maps: Method and Application to Land Subsidence in the Alto Guadalentín Aquifer (SE Spain)

Estimation du champ de transmissivité d’un aquifère alluvial fortement hétérogène à partir de la résistance transversale. Application à la nappe du Haouz de Marrakech (Maroc)

Magnetic and DC resistivity investigation for groundwater in a complex subsurface terrain

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