IZMIRAN
MSU (Faculty of Physics)
from 01.01.1989 to 01.01.1995
Moscow, Moscow, Russian Federation
from 01.01.2007 to 01.01.2023
Moscow, Moscow, Russian Federation
Murmansk Arctic State University
Apatity, Russian Federation
Moscow, Moscow, Russian Federation
Apatity, Russian Federation
Apatity, Russian Federation
Murmansk Arctic State University
Apatity, Russian Federation
Moscow, Moscow, Russian Federation
UDK 537.87 Распространение и излучение электромагнитных волн
UDK 517.9 Дифференциальные, интегральные и другие функциональные уравнения. Конечные разности. Вариационное исчисление.
GRNTI 37.01 Общие вопросы геофизики
GRNTI 37.15 Геомагнетизм и высокие слои атмосферы
GRNTI 37.25 Океанология
GRNTI 37.31 Физика Земли
GRNTI 38.01 Общие вопросы геологии
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.
GPR, numerical modelling, video pulse, water depth
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