Earthquake detecting magnetometer with movable magnetic compass

Details Earthquake detecting magnetometer with movable magnetic compass Earthquake detecting magnetometer with movable magnetic compass

1989-04-20

1990-12-25

Strecker, Gerard R.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

By magnetic means

33355R, 324259, 340601, G01V 340, G01R 33038, G01C 1706, G01W 100

Patent

active

049806440

ABSTRACT:
An earthquake predicting magnetometer having a compass assembly with a graduated dial and an adjustbly positionable magnet assembly having magnetic poles oriented opposite the direction markings on the compass dial. The device is oriented to the cardinal points using the compass. Then the magnet is adjusted in proximity to the compass assembly until the magnet counterbalances the magnetosphere of the earth. This leaves the compass needle facing east or west. When the magnetosphere of earth weakens prior to a major seismic event, the compass needle will point to the south on a graduated scale on the dial, indicating an imminent quake of large magnitude.

REFERENCES:
patent: 2123045 (1938-07-01), Hoare
patent: 3024412 (1962-03-01), Breen
patent: 3142122 (1964-07-01), Boepple
patent: 3334420 (1967-08-01), Stockton
patent: 4628299 (1986-12-01), Tate et al.
patent: 4724390 (1988-02-01), Rauscher et al.

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