Method and apparatus for detecting electromagnetic waves generat

Details Method and apparatus for detecting electromagnetic waves generat Method and apparatus for detecting electromagnetic waves generat

1987-12-29

1989-06-06

Sikes, William L.

Communications: radio wave antennas

Antennas

Buried underground or submerged under water

343841, 324323, 324344, H01Q 104

Patent

active

048375829

ABSTRACT:
An antenna element such as a monopole, dipole or loop antenna is located in the earth or on the floor of the sea so as to receive pre-earthquake electromagnetic waves generated prior to the occurrence of an earthquake. Unwanted noise waves propagating in the air such as man-made noise are effectively eliminated by a reflector laid on the surface of the earth or by the sea water and only the required pre-earthquake waves are detected by the antenna element, whereby earthquakes can be predicted reliably.

REFERENCES:
patent: 1388336 (1921-08-01), Hanson
patent: 1388949 (1921-08-01), Hanson
patent: 4030032 (1977-06-01), Wheeler
patent: 4088998 (1978-05-01), Rawls
patent: 4207568 (1980-06-01), MacLeod
patent: 4724390 (1988-02-01), Rauscher et al.

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