Accession Number : AD0748331
Title : Propagation of Electromagnetic Waves in the Earth Crust Waveguide from ELF to VLF.
Descriptive Note : Technical rept.,
Corporate Author : OFFICE OF TELECOMMUNICATIONS BOULDER COLO INST FOR TELECOMMUNICATION SCIENCES
Personal Author(s) : Spies,Kenneth P. ; Wait,James R.
Report Date : 01 MAY 1972
Pagination or Media Count : 80
Abstract : Using an idealized model, the attenuation rate of the lowest order mode is calculated for a range of deep crustal conductivities. It is shown that attenuation rates may be as low as 1 dB/100 km at 1 Hz for a waveguide conductivity less than 0.000001 mhos/m. Numerical values of the propagation parameters are appended. (Author)
Descriptors : (*RADIO TRANSMISSION, EXTREMELY LOW FREQUENCY), UNDERGROUND, RADIO WAVES, PROPAGATION, VERY LOW FREQUENCY, ATTENUATION, TABLES(DATA)
Subject Categories : Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE