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
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE