Accession Number : ADD006109

Title :   Subterranean Anomalies Detection System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hansen,Peder M ; Hoffman,John G ; Seeley,Edwin W ; Andrew,Wesley A

Report Date : 20 Apr 1979

Pagination or Media Count : 10

Abstract : This patent application describes a method and apparatus for detecting anomalies beneath an area of the earth's surface wherein an oscillator couples a current into two conductors laid parallel to each other to generate two magnetic fields in the earth beneath the area. The magnetic field is measured along a line midway between the two horizontal conductors to detect for an increase in the measured field which is an indication of the presence of an anomaly. (Author)

Descriptors :   *Patent applications, *Magnetic detectors, *Tunnels, Cavities, Voids, Buried objects, Magnetic anomalies

Subject Categories : Civil Engineering
      Magnetic & Electric Fld Detection & Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE