Report of a Workshop on the Geoelectric and Geomagnetic Environment of Continental Margins Held in Arlington, Virginia on November 1989
Abstract
This report discusses basic research needs in electromagnetic (EM) geophysics relevant to one endeavour identified as important science issue and having a significant impact on Navy nonacoustic ASW surveillance programs. A major ASW emphasis has been placed on long range, deep ocean surveillance using passive acoustics and the subsequent tactical localization of submerged targets using passive and active acoustics or airborne magnetic anomaly detection (MAD). Because of recent and dramatic improvements in the acoustic quieting of foreign submarines, traditional forms of surveillance have lost some effectiveness. As a result, there is an increasing focus on long range, low frequency active acoustics in the deep ocean as a supplement to passive techniques, as well as more emphasis on acoustic barrier techniques. Reduced acoustic surveillance efficiency has also led to renewed interest in nonacoustic ASW methods, including those based on measurement of electric and magnetic fields. While EM field detection has potential uses in both the deep ocean and shallow water, this report emphasizes the latter. There are both immediate operational needs and important geophysical issues that dictate this emphasis. Keywords: Undersea surveillance; Electromagnetic environments.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1990
- Accession Number
- ADA223743
Entities
People
- A. D. Chave
- C. S. Cox
- J. R. Booker
- L. W. Hart
- P. L. Gruber
Organizations
- Scripps Institution of Oceanography