Results 21 to 30 of about 6,136,221 (247)

DETERMINATION OF OPTIMAL OBSERVATION NETWORK PARAMETERS FOR MAPPING PALEOCHANNEL BY THE ELECTRICAL RESISTIVITY TOMOGRAPHY METHOD BASED ON NUMERICAL AND PHYSICAL MODELING

Известия Томского политехнического университета: Инжиниринг георесурсов, 2023
Link for citation: Osipova P.S., Olenchenko V.V., Chekryzhov A.V. Determination of optimal observation network parameters for mapping paleochannel by the electrical resistivity tomography method based on numerical and physical modeling.
Polina S. Osipova, Vladimir V. Olenchenko, Andrey V. Chekryzhov   +2 more
doaj   +1 more source

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

Записки 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

Determination of cavities using electrical resistivity tomography

Contributions to Geophysics and Geodesy, 2012
Geophysical surveys for cavity detection are one of the most common nearsurface applications. The usage of resistivity methods is also very straightforward for the air-filled underground voids, which should have theoretically infinite resistivity in the ...
René PUTIŠKA, Maroš NIKOLAJ, Ivan DOSTÁL, David KUŠNIRÁK   +3 more
doaj   +1 more source

Removing the effects of temperature on electrical resistivity tomography data collected in partially frozen ground: Limitations and considerations for field applications

Vadose Zone Journal, 2021
Time‐lapse electrical resistivity tomography (ERT) can be used to image a wide variety of subsurface processes. It is often necessary to remove the effects of seasonal near‐surface temperature variability in order to interpret the signal of interest ...
Teddi Herring, Adam Pidlisecky, Edwin Cey   +2 more
doaj   +1 more source

Analysis of electrical resistivity and acoustic wave velocity characteristics in fault structures and their combined application in the detection process

Shuiwen dizhi gongcheng dizhi
Finding out the specific location of the fault structure is of great significance for the engineering site selection and stability evaluation. Electrical resistivity tomography and acoustic logging are geophysical methods widely used in detecting ...
Jian GAO, Jianwei PAN, Lin ZHAN, Lun QIAN, Chen YANG, Chengli ZHANG   +5 more
doaj   +1 more source

Joint seismic/electrical effective medium modelling of hydrate-bearing marine sediments and an application to the Vancouver Island margin [PDF]

, 2008
Remote determination of the hydrate content of marine sediments remains a challenging problem.In the absence of boreholes, the most commonly used approach involves the measurement of Pwavevelocities from seismic experiments.
Best, A.I., Ellis, M.H., Best, Angus I., Minshull, T.A., Sinha, M.C.   +4 more
core   +1 more source

Electrical geophysical evaluation of susceptibility to flooding in University of Nigeria, Nsukka main campus and its environs, Southeastern Nigeria

Journal of Groundwater Science and Engineering, 2023
Flooding occurs when rainfall exceeds the absorption capacity of soil and causes significant environmental consequences. In this study, electrical resistivity techniques were employed to assess the flood susceptibility of the study area by examining ...
Daniel Nnaemeka Obiora, Johnson Cletus Ibuot   +1 more
doaj   +1 more source

Resolution of electrical imaging of fluid movement in landfills

, 2011
This paper investigates the efficacy of time-lapse electrical imaging using surface electrodes to monitor the movement of leachate within a landfill. A laboratory-based study allowed direct comparison between observed physical dewatering and time-lapse ...
Barker, R.D., Jolly, J.M., Beaven, R.P.
core   +1 more source

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

, 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 ...
Gunn, David A., David A. Gunn, Paul B. Wilkinson, Oliver Kuras, Richard D. Ogilvy, Wilkinson, Paul B., Meldrum, Philip I., Ogilvy, Richard D., Philip I. Meldrum, Chambers, Jonathan E., Kuras, Oliver, Jonathan E. Chambers   +11 more
core   +1 more source

Differentiating Clayey Soil Layers from Electrical Resistivity Imaging (ERI) and Induced Polarization (IP) [PDF]

Engineering and Technology Journal, 2013
Electrical Resistivity Imaging (ERI) method is one of the most promising techniques which is well suited for the applications in the fields of geohydrology, environmental science and engineering.
Nadia A. Aziz, Mahmoud R. AL- Qaissy, Hussein H. Karim   +2 more
doaj   +1 more source