Characterization Of Complex Archaeological Sites Using 3D Electrical Resistivity Tomography

Morelli, Annalisa; Morelli, Gabriele; Chiara, P.; Pacchini, Alessio; Fischanger, Federico

doi:10.3997/2214-4609-pdb.186.arc04

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…6.2). Other methods applied to funerary structures and in situ human remains include TLS (Shofukuji Burial Chamber: Kanaya et al, 2001;Kadobayashi, 2002; and Sterkfontein "Little Foot" hominin: Subsol et al, 2015), electrical resistivity tomography (burial mounds: Morelli et al, 2004), and CT scanning (unexcavated cremation urns: Harvig et al, 2012). Recently a commercial Artec Eva scanner was used for SLS of in situ Homo nadeli remains (Dinaledi Chamber: Kruger et al, 2015).…”

Section: Funerary Taphonomy and The Third Dimensionmentioning

confidence: 99%

Recording In Situ Human Remains in Three Dimensions

Ulguim

2017

Human Remains: Another Dimension

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Section: Funerary Taphonomy and The Third Dimensionmentioning

confidence: 99%

Recording In Situ Human Remains in Three Dimensions

Ulguim

2017

Human Remains: Another Dimension

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“…The forward and inverse problems in geophysics have been discussed by various authors (e.g. Hilbich et al, 2009;Friedel, 2003;Scales and Snieder, 2000;Oldenburg and Li, 1999), with the inverse problem trying to deduce specific earth properties from measurements and the forward problem trying to predict geophysical data from a model of the subsurface. While solutions of the inverse problem are nonunique those of the forward problem are unique (with the existence of only one solution that is capable of representing the data).…”

Section: Forward and Inverse Modelling -Back-and-forth Interpretationmentioning

confidence: 99%

“…To date, studies applying 3D-ERT techniques for permafrost related problems are sparse (Schwindt and Kneisel, 2009;Schwindt, 2007;Krautblatter, 2008;Rödder and Kneisel, 2011). In contrast, 3D techniques are generally more common in disciplines such as environmental (Dahlin et al, 2002;Chambers et al, 2007;Bentley and Gharibi, 2004;Bichler et al, 2004;Friedel et al, 2006) hydrological (Park, 1998) and soil science (Garré et al, 2011), as well as geotechnical engineering (Fischanger et al, 2007) of contaminated and waste disposal sites (Rucker et al, 2009;Soupios et al, 2007) and in archaeology (Papadopoulos et al, 2007;Morelli et al, 2004). It should be noted that there are inconsistencies in the use of the term "3D" for electrical resistivity studies in the publications mentioned above.…”

Section: Introductionmentioning

confidence: 99%

Optimisation of quasi-3D electrical resistivity imaging – application and inversion for investigating heterogeneous mountain permafrost

Schwindt¹,

Kneisel²

2011

Preprint

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Abstract. This study aimed to optimise the application, efficiency and interpretability of quasi-3D resistivity imaging for investigating the heterogeneous permafrost distribution at mountain sites by a systematic forward modelling approach. A three dimensional geocryologic model, representative for most mountain permafrost settings, was developed. Based on this geocryologic model quasi-3D models were generated by collating synthetic orthogonal 2D arrays, demonstrating the effects of array types and electrode spacing on resolution and interpretability of the inversion results. The effects of minimising the number of 2D arrays per quasi-3D grid were tested by enlarging the spacing between adjacent lines and by reducing the number of perpendicular tie lines with regard to model resolution and loss of information value. Synthetic and measured quasi-3D models were investigated with regard to the lateral and vertical resolution, reliability of inverted resistivity values, the possibility of a quantitative interpretation of resistivities and the response of the inversion process on the validity of quasi-3D models. Results show that setups using orthogonal 2D arrays with electrode spacings of 2 m and 3 m are capable of delineating lateral heterogeneity with high accuracy and also deliver reliable data on active layer thickness. Detection of permafrost thickness, especially if the permafrost base is close to the penetration depth of the setups, and the reliability of absolute resistivity values emerged to be a weakness of the method. Quasi-3D imaging has proven to be a promising tool for investigating permafrost in mountain environments especially for delineating the often small-scale permafrost heterogeneity, and therefore provides an enhanced possibility for aligning permafrost distribution with site specific surface properties and morphological settings.

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“…A numerical inversion routine is used to determine the probable electrical resistivity distribution of the subsurface. Due to the progress in both electronics and data-processing software, it is now possible to make real three-dimensional tomography images using direct-current measurements on electrode grids (Loke and Barker, 1996;Dahlin and Loke, 1997;Ogilvy et al, 1999Ogilvy et al, , 2002Finotti et al, 2004;Morelli et al, 2004;Fischanger et al, 2007).…”

Section: Geoelectrical Measurementsmentioning

confidence: 99%

Integrated geophysical measurements on a test site for detection of buried steel drums

Marchetti

Settimi

2011

Annals of Geophysics

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Geophysical methods are increasingly used to detect and locate illegal waste disposal and buried toxic steel drums. This study describes the results of a test carried out in clayey-sandy ground where 12 empty steel drums had previously been buried at 4-5 m below ground level. This test was carried out with three geophysical methods for steel-drum detection: a magnetometric survey, electrical resistivity tomography with different arrays, and a multifrequency frequency-domain electromagnetic induction survey. The data show that as partially expected, the magnetometric and electromagnetic induction surveys detected the actual steel drums buried in the subsurface, while the electrical resistivity tomography mainly detected the changes in some of the physical properties of the terrain connected with the digging operations, rather than the actual presence of the steel drums.

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Characterization Of Complex Archaeological Sites Using 3D Electrical Resistivity Tomography

Cited by 4 publications

References 2 publications

Recording In Situ Human Remains in Three Dimensions

Recording In Situ Human Remains in Three Dimensions

Optimisation of quasi-3D electrical resistivity imaging – application and inversion for investigating heterogeneous mountain permafrost

Integrated geophysical measurements on a test site for detection of buried steel drums

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