DocumentCode :
1010342
Title :
Geophysical subsurface probing with a horizontal magnetic dipole
Author :
Chan, Wing-cheung M. ; Kong, Jin Au ; Tsang, Leung
Author_Institution :
Univ. of Southern California, Los Angeles, CA, USA
Volume :
24
Issue :
6
fYear :
1976
fDate :
11/1/1976 12:00:00 AM
Firstpage :
877
Lastpage :
879
Abstract :
The use of a horizontal magnetic dipole in geophysical subsurface probing with the electromagnetic fringes method is investigated. It is found that when placed on the surface of a half-space medium, angles of maximum power coupling into the medium occur at 
in the endfire direction and 
in the broadside direction, where 
is the refractive index of the half-space medium. Also the broadside radiation pattern exhibits a sharper maximum as compared with that of a horizontal electric dipole, which provides a clearer indication of the depth of a subsurface layer.
in the endfire direction and in the broadside direction, where is the refractive index of the half-space medium. Also the broadside radiation pattern exhibits a sharper maximum as compared with that of a horizontal electric dipole, which provides a clearer indication of the depth of a subsurface layer.Keywords :
Dipole antennas; Electromagnetic propagation in nonhomogeneous media; Geophysical measurements; Radio interferometry; Underground electromagnetic propagation; Antenna radiation patterns; Atmospheric waves; Fluctuations; Gold; Interference; Permeability; Permittivity; Perpendicular magnetic recording; Reflection; Refractive index;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1976.1141428
Filename :
1141428
Link To Document :
