Results 101 to 110 of about 756 (147)

Electrical resistance tomography(ERT) by using an ECT sensor

2010 IEEE International Conference on Imaging Systems and Techniques, 2010
A sensor typically used in electrical capacitance tomography (ECT) was generalized to reconstruct the conductivity distribution in this paper. Analytical model was established for the sensor. As a result, the sensitivity matrix and the electric field lines can be obtained directly by using the formulae, which are fast and simple.
Zhang Cao, Lijun Xu, Chengfeng Xu, Huaxiang Wang   +3 more
openaire   +1 more source

Dynamic performance improvement of ERT system [electrical resistance tomography]

Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510), 2004
Electrical resistance tomography (ERT) is the embranchment of process tomography (PT). In this paper, the bottleneck of system real-time performance is analysed. The dynamic performance of the system can be improved by increasing the signal frequency, placing the band pass filter (BPF) parallel and replacing the low pass filter (LPF) used to obtain the
null Wang Wenhui, null Dong Feng, null Xu Yanbin, null Liu Junwen   +3 more
openaire   +1 more source

Electrical Resistivity Tomography (ERT) Measurements in the Walls of the Rotunda Monument

ArcheoSciences
Mapping the integrity of standing monuments with borehole-to-surface Electrical Resistivity Tomography (ERT) measurements. Reconstruct the internal composition and identify positions prone to contain moisture. Contribution to the preservation of historical monuments.
Georgia Zacharopoulou, Panagiotis Tsourlos   +1 more
exaly   +2 more sources

Foundation delineation of Solani Aqueduct using Electrical Resistivity Tomography (ERT)

1st Indian Near Surface Geophysics Conference & Exhibition, 2019
Summary Foundation delineation of Solani Aqueduct using Electrical Resistivity Tomography (ERT).
P.K.S. Chauhan, null Medha, D.P. Kanungo
openaire   +1 more source

Electric Resistivity Tomography (ERT) Measurements in Area of an Old Salt Mine

Proceedings, 2013
A large number of old salt exploitations are presently abandoned in Romania as a consequence of mine flooding, determining in many cases active subsidence and collapse. The geophysical study carried out in 2012 at Ocna Dej salt mine had as main objective the detailed illustration by means of ERT and VES resistivity data the actual extent of underground
F. Chitea, D. Ioane, C. Marunteanu, G.F. Garbacea   +3 more
openaire   +1 more source

4D Electrical Resistivity Tomography (ERT) for Aquifer Thermal Energy Storage Monitoring [PDF]

Geothermics, 2019
Abstract In the context of aquifer thermal energy storage, we conducted a hydrogeophysical experiment emulating the functioning of a groundwater heat pump for heat storage into an aquifer. This experiment allowed the assessment of surface electrical resistivity tomography (ERT) ability to monitor the 3D development over time of the aquifer thermally ...
Thomas Hermans, Tanguy Robert, Alistair Boyle   +2 more
exaly   +5 more sources

Electrical Resistivity Tomography (ERT) as a Tool for Monitoring Moisture Dynamics in Soil Filled Containers

20th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2006
The multidisciplinary research group INTERURBAN (DFG 409) has been formed to investigate the dynamics of water and solutes at urban locations with particular attention to the spatial heterogeneity, the organic soil substance, and soil-biological transformation processes in the unsaturated zone.
O. Mohnke, K. Prokoph, U. Yaramanci
openaire   +1 more source

Bedrock Detection and Mineral Thickness Assessment Using 3D Electrical Resistivity Tomography (ERT)

Proceedings, 2011
In this study, we demonstrate the use of 3D ERT for detecting depth to bedrock below river terrace sand and gravel, and quantify its performance against borehole control data. The approach to ERT bedrock detection considered here assumes that the interface is located at the maximum slope of the resistivity-depth curve, and is therefore referred to as ...
Chambers, Jonathan, Wilkinson, Paul, Hameed, A., Hill, I.A., Jeffrey, C.A., Wardrop, D., Meldrum, Philip, Kuras, Oliver, Ogilvy, Richard, Gunn, David, Cave, Mark, Aumonier, J.   +11 more
openaire   +2 more sources

A Review of Recent Electrical Resistance Tomography (ERT) Applications for Wet Particulate Processing

Particle & Particle Systems Characterization, 2008
AbstractElectrical Resistance Tomography (ERT) provides the capability to measure the conductivity distribution within a given process plant delivering time evolving multi‐dimensional information which often enhances fundamental process understanding whilst improving the design and operation of the process equipment.
Steven J. Stanley, Gary T. Bolton
openaire   +1 more source

ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) AS AN AID TO UNDERSTANDING ARCHAEOLOGICAL SITES IN ISRAEL

Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2013
ERT suffers from a number of handicaps that would seem to make it poorly suited, in general, to archaeological applications. These limitations include poor compatibility with producing map view data, the time consuming nature of resistivity surveys due to the need to place electrodes in the earth, the limited ability of geoelectric inversions to ...
openaire   +1 more source