Results of numerical modelling of the problem of video pulse ground penetrating radar research in freshwater bodies
Author:
Gulevich Oxana12, Volkomirskaya Liudmila2, Mingalev Igor34, Varenkov Vladimir2, Suvorova Zoya3, Akhmetov Oleg3, Mingalev Oleg34, Reznikov Aleksander
Affiliation:
1. Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences (IZMIRAN) 2. IZMIRAN 3. Polar Geophysical Institute RAS 4. Murmansk Arctic State University
Abstract
Ground-penetrating radar profiling on the surface of water bodies is applied in various geological and engineering studies. Here, we present the results of numerical simulation of the propagation of a video pulse electromagnetic signal in a freshwater body with gradients of the permittivity and electrical conductivity in the near-bottom layer. The method of numerical solutions of Maxwell's equations in the time domain is applied, in the general setting for rapidly changing processes, without restrictions on the magnitude of the change in the parameters of the medium. The results make it possible to explain the apparent decrease in water depth according to GPR data in comparison with the true depth and the appearance of additional reflecting boundaries on radargrams in the bottom layer.
Publisher
Geophysical Center of the Russian Academy of Sciences
Subject
General Earth and Planetary Sciences
Reference19 articles.
1. Archer D.G., Wang P. (1990), The Dielectric Constant of Water and Debye‐Hückel Limiting Law Slopes. Journal of Physical and Chemical Reference Data. Vol. 19, 371-411, doi:10.1063/1.555853, Archer D.G., Wang P. (1990), The Dielectric Constant of Water and Debye‐Hückel Limiting Law Slopes. Journal of Physical and Chemical Reference Data. Vol. 19, 371-411, doi:10.1063/1.555853 2. Bristow, C.S., Jol H.M. (2003), An introduction to ground penetrating radar (GPR) in sediments. Geological Society, London, Special Publications. Vol. 211, 1-7, https://www.researchgate.net/publication/240675354_An_introduction_to_ground_penetrating_radar_GPR_in_sediments, Bristow, C.S., Jol H.M. (2003), An introduction to ground penetrating radar (GPR) in sediments. Geological Society, London, Special Publications. Vol. 211, 1-7, https://www.researchgate.net/publication/240675354_An_introduction_to_ground_penetrating_radar_GPR_in_sediments 3. Bobrov N.Yu., Dmitriev V.V., Krylov S.S., Parshina T.V., Pryahina G.V., Fedorova I.V. (2008), On the possibility of georadiolocation application for hydrological investigations in the river mouth areas. Vestnik of SPbSU. Series7. Geography and Geology. Issue 2, 76-81. (In Russian), Bobrov N.Yu., Dmitriev V.V., Krylov S.S., Parshina T.V., Pryahina G.V., Fedorova I.V. (2008), On the possibility of georadiolocation application for hydrological investigations in the river mouth areas. Vestnik of SPbSU. Series7. Geography and Geology. Issue 2, 76-81. (In Russian) 4. Catenaccio, A., Daruich Y, Magallanes C. (2003), Temperature dependence of the permittivity of water. Chemical Physics Letters. Vol. 367. 669-671, doi:10.1016/S0009-2614(02)01735-9, Catenaccio, A., Daruich Y, Magallanes C. (2003), Temperature dependence of the permittivity of water. Chemical Physics Letters. Vol. 367. 669-671, doi:10.1016/S0009-2614(02)01735-9 5. Giannopoulos A. (2005), Modelling ground penetrating radar by GprMax. Construction and Building Materials, Vol. 19, No. 10, pp. 755–762, doi:10.1016/j.conbuildmat.2005.06.007, Giannopoulos A. (2005), Modelling ground penetrating radar by GprMax. Construction and Building Materials, Vol. 19, No. 10, pp. 755–762, doi:10.1016/j.conbuildmat.2005.06.007
|
|