Results 21 to 30 of about 28,033 (349)

Cone-based electrical resistivity tomography [PDF]

open access: yesGEOPHYSICS, 2006
Determining the 3D spatial distribution of subsurface properties is a challenging, but critical, part of managing the cleanup of contaminated sites. We have developed a minimally invasive technology that can provide information about the 3D distribution of electrical conductivity.
Adam Pidlisecky   +2 more
openaire   +1 more source

Tomographic inversion of time-domain resistivity and chargeability data for the investigation of landfills using a priori information [PDF]

open access: yes, 2017
In this paper, we present a new code for the modelling and inversion of resistivity and chargeability data using a priori information to improve the accuracy of the reconstructed model for landfill.
CARDARELLI, Ettore, DE DONNO, GIORGIO
core   +1 more source

Application of Electrical Resistance Tomography [PDF]

open access: yesProceedings of the 4th International Conference on Information Technology and Management Innovation, 2015
Electrical tomography technology is a kind of process tomography technology. It is accompanied by the development of computer technology and sensor technology. Electrical resistance tomography is a kind of mode of electrical tomography. It has some excellent characteristics that are non-invasive, portable, l ow cost and fast response etc. In this paper,
Kaige Tian   +4 more
openaire   +1 more source

Monitoring hydraulic processes with automated time-lapse electrical resistivity tomography (ALERT) [PDF]

open access: yes, 2009
Hydraulic processes in porous media can be monitored in a minimally invasive fashion by time-lapse electrical resistivity tomography (ERT). The permanent installation of specifically designed ERT instrumentation, telemetry and information technology (IT)
Chambers, J.E.   +6 more
core   +2 more sources

Resistivity Probability Tomography Imaging at the Castle of Zena, Italy

open access: yesEURASIP Journal on Image and Video Processing, 2009
We present the results of an electrical resistivity investigation performed at Castle of Zena (Castello di Zena), a 13th-century fortress located between the towns of Fiorenzuola and Piacenza in the Emilia Romagna Region (Northern Italy), in the frame ...
Patella Domenico   +3 more
doaj   +2 more sources

Saltwater Intrusion Appraisal of Shallow Aquifer in Burutu Area of the Western Niger Delta with 2D Electrical Resistivity Tomography

open access: yesJournal of Applied Sciences and Environmental Management, 2017
The area is faced with endemic groundwater quality problems arising from abandoned shallow and deep boreholes. The abandonment of shallow boreholes is presumed to have been caused by saltwater intrusion from the ocean.
Oghenero Ohwoghere-Asuma   +2 more
doaj   +1 more source

Predicting the movements of permanently installed electrodes on an active landslide using time-lapse geoelectrical resistivity data only [PDF]

open access: yes, 2010
If electrodes move during geoelectrical resistivity monitoring and their new positions are not incorporated in the inversion, then the resulting tomographic images exhibit artefacts that can obscure genuine time-lapse resistivity changes in the ...
Chambers, Jonathan E.   +5 more
core   +1 more source

Measuring lung resistivity using electrical impedance tomography [PDF]

open access: yesIEEE Transactions on Biomedical Engineering, 1992
We propose the use of electrical impedance tomography (EIT) imaging techniques in the measurement of lung resistivity for detection and monitoring of apnea and edema. In EIT, we inject currents into a subject using multiple electrodes and measure boundary voltages to reconstruct a cross-sectional image of internal resistivity distribution.
E J, Woo   +3 more
openaire   +2 more sources

Collaborative interpretation of the data obtained by resistivity and ground penetrating radar methods for assessing the permeability of sandy clay soils

open access: yesЗаписки Горного института, 2018
A method for estimating the filtration factor of sandy clay soils is considered on the basis of a joint interpretation of the data of a set of methods of engineering electrical exploration, including electrical resistivity tomography and ground ...
D. A. Lalomov, V. V. Glazunov
doaj   +1 more source

Heat as a proxy to image dynamic processes with 4D electrical resistivity tomography [PDF]

open access: yes, 2019
Since salt cannot always be used as a geophysical tracer (because it may pollute the aquifer with the mass that is necessary to induce a geophysical contrast), and since in many contaminated aquifer salts (e.g., chloride) already constitute the main ...
Bolly, Pierre-Yves   +4 more
core   +1 more source

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