Surface impedance of the layered medium "dry sand - watered sea sand" in the VLF-VHF range

Yuri B. Bashkuev; Ludmila Kh. Angarkhaeva; Darima G. Buyanova

doi:10.1117/12.2603255

15 December 2021 Surface impedance of the layered medium "dry sand - watered sea sand" in the VLF-VHF range

Yuri B. Bashkuev, Ludmila Kh. Angarkhaeva, Darima G. Buyanova

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119165U (2021) https://doi.org/10.1117/12.2603255
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

Fund materials of vertical electrical soundings (VES) was used to determine the surface impedance of the layered medium "dry sand - watered sea sand" in the VLF-VHF radio wave. The results of calculations of the frequency dependence of the surface impedance of a three-layers medium "dielectric on watered sea sand" in the frequency range from 10 kHz to 30 MHz indicate that the dielectric layer "dry sand" with thickness up to 2-3 m shifts the phase of impedance to the highly inductive area (from 10 kHz to 10 MHz). The impedance modulus in this frequency range is satisfy boundary conditions of impedance. The phase of impedance reaches –82º. "Dry sand - watered sea sand" medium is an analogue of the "ice-sea" medium with a strong inductive impedance in the VLF-HF ranges. There are wide distribution of sand beaches on all oceans and seas of the Earth. "Dry sand - watered sea sand" structures are typical for large areas of the Earth and calculations of coastal refraction of the "land-sea" in radio systems it should take into account. The modeling results are required to check the forecast maps of geoelectric sections (GES) of the Earth's continents and for calculations of radio waves propagation.

Citation Download Citation

Yuri B. Bashkuev, Ludmila Kh. Angarkhaeva, and Darima G. Buyanova "Surface impedance of the layered medium "dry sand - watered sea sand" in the VLF-VHF range", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119165U (15 December 2021); https://doi.org/10.1117/12.2603255

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